Re: [clamav-users] Clamav and auto updating

2024-07-30 Thread Maarten Broekman via clamav-users
Your best bet would be to have freshclam running on one machine and have the rest use the Ansible playbook to pull from that “freshclam machine”. Or, if you want to keep it all Ansible, have the playbook pull the definitions vis freshclam on one machine and then copy to all the others. -Maart

Re: [clamav-users] Unix.Malware.Kaiji-10003916-0

2023-06-08 Thread Maarten Broekman via clamav-users
> So how does Kaiji-10003917-0 to Kaiji-10003916-0 ? Does > Kaiji-10003916-0 get thrown out, or does it get updated to > Kaiji-10003917-0 ? The way it was explained to me (years ago) is that they are separate signatures, unrelated expect in that they are related to Kaiji. If 10003916-0 was upd

Re: [clamav-users] CVE_2021_4034-9951522 false positives on node executables

2022-08-03 Thread Maarten Broekman via clamav-users
gt; > 6b8627f0b1327ffee606314125862e27 node-v18.7.0-darwin-arm64/bin/node > > so I wonder what's up there. As it isn't the same file that you have > I didn't bother to scan it, but see below for 'strings' etc. > > On Tue, 2 Aug 2022, Maarten Broekm

Re: [clamav-users] CVE_2021_4034-9951522 false positives on node executables

2022-08-02 Thread Maarten Broekman via clamav-users
That's the only thing I can think of. I had node 18.6.0 and I'm running ClamAV 0.105.0. That detected the node binary as having the same virus. However, when I upload and scan the binary with VirusTotal, their install of ClamAV does not detect it. Similarly, after I upgraded to node 18.7.0, my loc

Re: [clamav-users] PUA detected. False Positive?

2022-07-15 Thread Maarten Broekman via clamav-users
is sender, while keeping PUA > checks still enabled for other cases. > > In the past I've not had great success searching entirely on my own. > > joe a. > > On 7/15/2022 4:34 PM, Maarten Broekman via clamav-users wrote: > > A "PUA" is a "potentially

Re: [clamav-users] PUA detected. False Positive?

2022-07-15 Thread Maarten Broekman via clamav-users
A "PUA" is a "potentially unwanted application", not necessarily malicious. You can disable PUA checks by ensuring that your clamd configuration has "DetectPUA" set to no. For reference, the signature is looking for bitwise math on CharCodeAt() operations in HTML files. VIRUS NAME: PUA.Win.Trojan

Re: [clamav-users] Permanently banned from clamav

2022-07-02 Thread Maarten Broekman via clamav-users
Downloading the entire databases unnecessarily (using web browsers, etc) is banned because it results in higher volumes of data transfer which, in turn, costs more money. As such, using things other than freshclam or cvdupdate were explicitly banned. There’s not much else to say. Maarten

Re: [clamav-users] Clamav found in php files Archive.Test.Agent2-9953724-0

2022-06-24 Thread Maarten Broekman via clamav-users
It's 100% a bad signature and should get removed. I just checked the current version of the akismet plugin ( https://wordpress.org/plugins/akismet/) from WordPress and it is detected by this signature but by nothing else: https://virusscan.jotti.org/en-US/filescanjob/00ecsxf7es https://www.virusto

Re: [clamav-users] Clamav found in php files Archive.Test.Agent2-9953724-0

2022-06-24 Thread Maarten Broekman via clamav-users
This is a new signature that was added today. It's rather complicated and, with the "Test" in the name, I'm not sure it's meant to be published. We'll have to wait to hear from the ClamAV folks on that matter, but you can submit it as a false positive (for those Wordpress zips) using the False posi

Re: [clamav-users] FreshClam received error code 429 from the ClamAV Content Delivery Network (CDN).

2022-06-22 Thread Maarten Broekman via clamav-users
What version of ClamAV are you using? What do the logs show? If you are before 0.103, then your version is too old. https://docs.clamav.net/faq/faq-eol.html Maarten Sent from a tiny keyboard > On Jun 22, 2022, at 05:08, Kachare, Ganesh, Vodafone (External) via > clamav-users wrote: > >  >

Re: [clamav-users] Heuristics.Phishing.Email.SpoofedDomain false positive desjardins.com and rbc.com

2022-06-15 Thread Maarten Broekman via clamav-users
https://docs.clamav.net/manual/Signatures/PhishSigs.html#wdb-format There are examples of the wdb format a bit lower on the page. Essentially, you would create a file "good_urls.wdb" in the same directory as the existing ClamAV database files and put in an appropriate line to handle the domains t

Re: [clamav-users] On access scanning causes system lockup with certain directories

2022-04-13 Thread Maarten Broekman via clamav-users
I'm not sure if this IS the answer, but my guess would be that ClamAV needs to access files in /usr/lib64... And it has to scan (and come back with an OK result) before access is allowed... resulting in scans being blocked which, in turn, results in ALL processes being blocked while waiting on the

Re: [clamav-users] why is clamscan excluding home directory ?

2022-04-08 Thread Maarten Broekman via clamav-users
rting at / and recursing so it should get to /home, see it is still > on the same filesystem and scan it. > > No ? > > > On Friday, 8 April 2022, 19:02:42 BST, Maarten Broekman < > maarten.broek...@gmail.com> wrote: > > > As Ged pointed out, the fact that /hom

Re: [clamav-users] why is clamscan excluding home directory ?

2022-04-08 Thread Maarten Broekman via clamav-users
As Ged pointed out, the fact that /home is mounted as a separate mount-point (even though it's the same device), leads the system to see them as different filesystems (you can umount /home without umount'ing /) As a result, your use of cross-fs=no tells clamscan to not cross filesystem boundaries

Re: [clamav-users] Virus not detected

2022-03-21 Thread Maarten Broekman via clamav-users
The accepted way would be to supply a link to the VirusTotal scan that didn't detect it. --Maarten On Mon, Mar 21, 2022 at 4:36 PM Jorge Bastos wrote: > It's just the link :P > How would you be able to test then? ;) > > ok won't send again.. but the default virus db doesn't seems to be > enough

Re: [clamav-users] Amazon/SpoofedDomain FP

2022-03-17 Thread Maarten Broekman via clamav-users
That's indicating that there is a link in the email that's displaying " www.americanexpress.com" but is actually going to "www.amazonbusiness.com". It's hard to help without seeing the original email code. On Thu, Mar 17, 2022 at 12:55 PM Alex via clamav-users < clamav-users@lists.clamav.net> wrot

Re: [clamav-users] human friendly signatures

2022-03-15 Thread Maarten Broekman via clamav-users
On Tue, Mar 15, 2022 at 1:53 PM G.W. Haywood via clamav-users < clamav-users@lists.clamav.net> wrote: > Hi there, > > On Tue, 15 Mar 2022, Laurent S. via clamav-users wrote: > >> using Yara's engine in clamav directly is something that has been > >> brought up time and again. It is possible. My un

Re: [clamav-users] Prevent root users from running infected files

2022-03-13 Thread Maarten Broekman via clamav-users
1. You’re excluding root in the config so you won’t be able to prevent from accessing malicious files. 1A. You shouldn’t run clamd as root. run it as another user (like “clamav” or “clamd”) 2. You are limiting it to only scan files in /home on-access 2A. You would likely want it to scan the enti

Re: [clamav-users] Virus database not updated since 14th July 2021

2022-03-08 Thread Maarten Broekman via clamav-users
What version of ClamAV are you using? July of last year sounds about when EOL versions of ClamAV were blocked wholesale and the 'acceptable version' was moved up and all prior versions were blocked. EOL has moved several times since then as well. Currently, the current stable version 0.104 and I do

Re: [clamav-users] SSL Authentication Error

2022-03-07 Thread Maarten Broekman via clamav-users
I would double-check to make sure python3 is using the correct CA bundle. On recent python3 versions, that should be the certifi bundle. $ which python3 /opt/homebrew/bin/python3 $ /opt/homebrew/bin/python3 --version Python 3.9.10 $ python3 -m certifi /opt/homebrew/lib/python3.9/site-packages/certi

Re: [clamav-users] Minor bug or working as intended?

2022-02-25 Thread Maarten Broekman via clamav-users
There's not a lot that you can do in Yara rules that you can't do in LDB sigs... for what it's worth, here's a logical sig that detects the same thing as the Yara rules... mbroekman@lothlorien:~$ grep MJB.JS.SendEmail clamdb/javascript_sigs.ldb| sigtool --decode-sigs VIRUS NAME: MJB.JS.SendEmailFu

Re: [clamav-users] Malware found on datadog folder in centos. Is it false-positive?

2022-01-31 Thread Maarten Broekman via clamav-users
Looks like the signature was dropped already because sigtool doesn't find it anymore after I updated the databases through freshclam. --Maarten On Mon, Jan 31, 2022 at 7:58 AM Al Varnell via clamav-users < clamav-users@lists.clamav.net> wrote: > Well yes, the fact that it was the only scanner wo

Re: [clamav-users] Where can I download daily.cvd, bytecode.cvd and main.cvd from?

2022-01-17 Thread Maarten Broekman via clamav-users
On Mon, Jan 17, 2022 at 9:53 AM Andrew C Aitchison via clamav-users < clamav-users@lists.clamav.net> wrote: > On Mon, 17 Jan 2022, Nick Howitt via clamav-users wrote: > > > - not > > have to install some uncommon download package and then download them. > That > > is making people jump through unn

Re: [clamav-users] Where can I download daily.cvd, bytecode.cvd and main.cvd from?

2022-01-17 Thread Maarten Broekman via clamav-users
Running freshclam after the package is installed should pull any/all of the files that are missing. That is probably the best way to do it. --Maarten On Mon, Jan 17, 2022 at 8:32 AM Nick Howitt via clamav-users < clamav-users@lists.clamav.net> wrote: > Hi, > I am trying to package ClamAV 0.103.5

Re: [clamav-users] [ext] ERROR: listdb: Error listing database /var/lib/clamav/daily.cvd

2021-11-24 Thread Maarten Broekman via clamav-users
I've opened https://github.com/Cisco-Talos/clamav/issues/389 for this issue. The issue *shouldn't* be causing problems with scanning (it wasn't causing a problem for me), but if it is please add a comment to the issue to that effect. --Maarten On Wed, Nov 24, 2021 at 11:19 AM M

Re: [clamav-users] [ext] ERROR: listdb: Error listing database /var/lib/clamav/daily.cvd

2021-11-24 Thread Maarten Broekman via clamav-users
On Wed, Nov 24, 2021 at 10:42 AM Maarten Broekman < maarten.broek...@gmail.com> wrote: > > > On Wed, Nov 24, 2021 at 10:14 AM Ralf Hildebrandt via clamav-users < > clamav-users@lists.clamav.net> wrote: > >> * Arnaud Jacques via clamav-users : >&g

Re: [clamav-users] [ext] ERROR: listdb: Error listing database /var/lib/clamav/daily.cvd

2021-11-24 Thread Maarten Broekman via clamav-users
On Wed, Nov 24, 2021 at 10:14 AM Ralf Hildebrandt via clamav-users < clamav-users@lists.clamav.net> wrote: > * Arnaud Jacques via clamav-users : > > Is it just me, or? > > Same here: > > # clamdscan -V > ClamAV 0.103.4/26363/Wed Nov 24 10:19:30 2021 > > # sigtool -l|tail > Doc.Malware.Valyria-6923

Re: [clamav-users] Nonsensical noreplies from ClamAV team

2021-11-18 Thread Maarten Broekman via clamav-users
"If you provided a description that suggests otherwise..." is a past tense conditional referring to the form submission. That phrase is the equivalent to this longer "If you put information in the description that suggests the sample is not clean..." On Thu, Nov 18, 2021 at 2:27 PM G.W. Haywood v

Re: [clamav-users] clamav DOA

2021-11-18 Thread Maarten Broekman via clamav-users
Cody, it looks like you’re running ClamAV 0.101.2. That version is too old. If you upgrade to 0.103.4, you should be able to start downloading the db files again. What kind of system are you on? Is ClamAV prepackaged for you or did you build from source? -Maarten Sent from a tiny keyboard >

Re: [clamav-users] Solaris users in a bind

2021-11-06 Thread Maarten Broekman via clamav-users
All versions of ClamAV prior to 0.103 are essentially EOL at this point. The only options for Solaris 10 are likely to build from source, along with all the prerequisites. --Maarten On Sat, Nov 6, 2021 at 7:54 AM Sunhux G via clamav-users < clamav-users@lists.clamav.net> wrote: > > We're still o

Re: [clamav-users] Netapp hidden files

2021-10-05 Thread Maarten Broekman via clamav-users
Hi Jeff, You would want to add those .snapshot paths to "ExcludePath" directives in your clamd.conf file for clamd / clamdscan or use the "--exclude-dir" option for clamscan. You'll probably want to write a wrapper script for clamscan to build up the list of .snapshot directories to ignore at t

Re: [clamav-users] ClamAV is not respecting Phishing* settings.

2021-09-23 Thread Maarten Broekman via clamav-users
To further Ged's point, these signatures that are hitting are extended logical signatures. Phishing signatures have a very specific format that are either solely looking at hostnames, host prefixes, link destinations and alternate text, and displayed hostnames ( https://docs.clamav.net/manual/Signa

Re: [clamav-users] Why does clamonacc says /var/www does not exist (among other things)?

2021-09-09 Thread Maarten Broekman via clamav-users
It depends on the OS, but if you have something like AppArmor or GrSecurity, you may need to grant the appropriate permissions there to allow access even for root. --Maarten On Thu, Sep 9, 2021 at 2:34 PM Micah Snyder (micasnyd) via clamav-users < clamav-users@lists.clamav.net> wrote: > Hi! > >

Re: [clamav-users] Mac OS Big Sur on M1

2021-09-01 Thread Maarten Broekman via clamav-users
Use homebrew unless you absolutely need the release candidate version. I installed ClamAV 0.103.3 via homebrew on my M1 Mac and it runs pretty well. On Wed, Sep 1, 2021 at 3:33 PM Vaughn A. Hart wrote: > Hi Folks, > > So I figured out the issue. It looks like during the install/upgrade that > n

Re: [clamav-users] Php.Trojan.MSShellcode-81 FOUND on MS IIS log file?

2021-07-12 Thread Maarten Broekman via clamav-users
In all likelihood, it means that a GET or POST payload contained the signature. Whether or not the request containing the signature was successful in injecting it into your site is a question that only you will be able to answer. You can use sigtool to find the signature and again to decode the si

Re: [clamav-users] LibClamAV Warning: PNG: Unexpected early end-of-file

2021-04-05 Thread Maarten Broekman via clamav-users
While verbose (-v) is helpful in some cases, you probably want to use the debug option to get the large volume of LibClamAV messages. I find debug is far more useful than verbose most times. Maarten Sent from a tiny keyboard > On Apr 5, 2021, at 04:17, Vivek Patil via clamav-users > wrote: >

Re: [clamav-users] Failed to update virus definitions

2021-04-02 Thread Maarten Broekman via clamav-users
Chances are you are using a version of ClamAV older than 0.100 and/or using wget/curl to get the updates rather than using the approved methods (freshclam / cvdupdate). https://www.clamav.net/documents/end-of-life-policy-eol https://www.clamav.net/documents/freshclam-faq Additionally, there are m

Re: [clamav-users] How to decode virus signature

2020-09-10 Thread Maarten Broekman via clamav-users
You can pipe that to sigtool --decode-sigs to see what it is. What I usually use is: $ sigtool --find-sigs BAD_RULE | awk '{ print $NF }' | sigtool --decode-sigs On Thu, Sep 10, 2020 at 9:55 PM Olivier via clamav-users < clamav-users@lists.clamav.net> wrote: > Hi, > > I have a virus signature th

Re: [clamav-users] Multiple Clam Daemons on a single system

2020-03-05 Thread Maarten Broekman via clamav-users
> On Mar 5, 2020, at 05:09, Ashish Poddar via clamav-users > wrote: > >  > Hi all, > > We have a situation where we run a clamav daemon to scan files on a system. > However, in the process, we only use about 10% CPU in the system. We would > naturally like to increase this number. We were

[clamav-users] FP: Doc.Downloader.Emotet-7196349-0

2020-02-05 Thread Maarten Broekman via clamav-users
This signature is hitting false positives. It seems to be a relatively old signature, but the subsignatures seem to be rather generic so it's difficult to know why this is supposed to be malicious. VIRUS NAME: Doc.Downloader.Emotet-7196349-0 TDB: Engine:51-255,Target:2 LOGICAL EXPRESSION: 0&1&2&3&

Re: [clamav-users] Use of clamav-daemon.socket? (0.102.0)

2019-11-14 Thread Maarten Broekman via clamav-users
For my install, I had multiple instances of clamd running (in order to have different databases loaded for different purposes) and the systemd sockets were throwing errors about other processes using them, which in turn caused the additional instances of clamd service units to fail. However, the cl

Re: [clamav-users] Html.Malware.Agent-7380889-0 false positive on Apache files?

2019-11-12 Thread Maarten Broekman via clamav-users
That's a hash signature. My guess is that there's 315 byte file inside the jar that was marked. The 2.4 version of fop has a 315 byte class file (PDFColorSpace.class) in it with a different MD5 hash. You might want to unpack the fop.jar and see if any of the files there match. Chances are some piec

Re: [clamav-users] ClamAV: Local Private Mirror

2019-07-30 Thread Maarten Broekman via clamav-users
I'd have to agree. Bandwidth is the least of the concern. Control is paramount. On Tue, Jul 30, 2019 at 7:26 AM Henrik K wrote: > > Control. Is it really necessary to go over basic IT management practises > here? > > On Tue, Jul 30, 2019 at 05:13:50PM +, Joel Esler (jesler) via > clamav-user

Re: [clamav-users] Problems scanning for PUAs

2019-05-30 Thread Maarten Broekman via clamav-users
I think the PUA version are just potentially unwanted things that exhibit trojan-like behavior but aren't confirmed trojans. As for the original question, it looks like it's only using the first part of that to determine the group of PUAs to ignore. These are the 'PUA' families (and associated si

[clamav-users] Filetype determination

2019-04-26 Thread Maarten Broekman via clamav-users
One problem that we're running into is that we encounter web pages and cgi scripts that are "inconsistently" normalized. I put "inconsistently" in quotes because without fully knowing the way ClamAV normalizes files, it is sometimes difficult to understand why two similar files might be normalized

Re: [clamav-users] [External] Re: Scan very slow

2019-04-17 Thread Maarten Broekman via clamav-users
7:03 AM Al Varnell via clamav-users < clamav-users@lists.clamav.net> wrote: > There are still 2515 "Phish.Phishing.REPHISH_ID_" signatures in > daily.ldb > > -Al- > > On Apr 17, 2019, at 03:36, Maarten Broekman > wrote: > > Are the "Phish&quo

Re: [clamav-users] [External] Re: Scan very slow

2019-04-17 Thread Maarten Broekman via clamav-users
Are the "Phish" REPHISH signatures still in the daily or were they removed as well? Those were causing part of the issue. --Maarten On Wed, Apr 17, 2019 at 5:24 AM Al Varnell via clamav-users < clamav-users@lists.clamav.net> wrote: > An additional 3968 Phishtank.Phishing.PHISH_ID_??? signat

Re: [clamav-users] [External] Re: Scan very slow

2019-04-09 Thread Maarten Broekman via clamav-users
et type 0, > whereas we’d split the Phishtank.Phishing signatures up by target type to > reduce scan times of files where the signatures won’t apply. It should > also speed things up quite a bit for other file types to split those up by > Target types. > > > > Further research

Re: [clamav-users] [External] Re: Scan very slow

2019-04-09 Thread Maarten Broekman via clamav-users
Clearly the latest daily.cvd is performing better, but the remaining "Phishtank" sigs are *not* a majority of the slowness. I unpacked the current (?) cvd (ClamAV-VDB:09 Apr 2019 03-53 -0400:25414:1548262:63:X:X:raynman:1554796413) and then ran a test scan with each part to see what the load times

Re: [clamav-users] [External] Re: Scan very slow

2019-04-07 Thread Maarten Broekman via clamav-users
Having the Phishtank sigs as an additional optional database would be great and, from my perspective, well worth the effort since we don't use them. On Sun, Apr 7, 2019 at 9:44 AM Micah Snyder (micasnyd) via clamav-users < clamav-users@lists.clamav.net> wrote: > Tim, > > > > There are a couple of

Re: [clamav-users] [External] Re: Scan very slow

2019-04-06 Thread Maarten Broekman via clamav-users
Given that the PhishTank signatures, specifically, have been causing the performance issues, no. It's not unreasonable to want to pull them, and only them, out. Having them in a separate db file would be highly beneficial to those of us that don't want or need them at all. Barring that, having a co

Re: [clamav-users] Scan very slow

2019-03-18 Thread Maarten Broekman via clamav-users
ime) is unclear. --Maarten Broekman Full scans without the daily cvd/cld: Scan time ~60seconds Full scans with the daily from March 11th: Scan time: 84seconds Full scans with the daily from March 17th: Scan time: 109seconds ~/clamav# ls -larth /tmp/clamdtest*/daily.cld -rw-r--r-- 1 clamav clamav

Re: [clamav-users] Problem with new safebrowsing file

2019-03-06 Thread Maarten Broekman via clamav-users
google > MD5: 70c61f41e52b5a2134ff7e272f5a6df1 > > SHA256 (safebrowsing.gdb) = > 7f6645b8d865de3992be1ad5de215afd848acee4c021eed4818fdb760f76b57e > > Something must be different. > > Dave R. > > On Wed, Mar 6, 2019 at 5:39 PM Maarten Broekman via clamav-users < > clamav-users@lists.clamav.net> wrote: > >> The

[clamav-users] Problem with new safebrowsing file

2019-03-06 Thread Maarten Broekman via clamav-users
The new safebrowsing cvd (starting with version 48473) seems to be sorted in a way that increases the load time of that file by several orders of magnitude. I have a previous version from February where the entries in the gdb section are sorted like this: S2:F:917787cff7b0993917209809ff3d94be

Re: [clamav-users] Problem with freshclam updating daily-25380.cdiff

2019-03-06 Thread Maarten Broekman via clamav-users
te: > Maarten, > > Thanks for reporting that. There is an ordering difference of the content > in the latest GDB file which is affecting the load time, and we will be > fixing that in the next safebrowsing CVD version. > > Dave R. > > On Wed, Mar 6, 2019 at 10:42 AM Maa

Re: [clamav-users] Problem with freshclam updating daily-25380.cdiff

2019-03-06 Thread Maarten Broekman via clamav-users
I'm not sure if the safebrowsing.cld is included in the daily cdiff, but the current safebrowsing.cld takes between 50 and 70 seconds to *load* into clamscan, where a copy from February loads in <5 seconds. safebrowsing data: Old (fast): ClamAV-VDB:13 Feb 2019 13-16 -0500:48472:3041760:63:X:X:goo

Re: [clamav-users] Mailing list DMARC problem

2018-10-31 Thread Maarten Broekman
Or, I don't know, recipients that are enforcing DMARC could simply follow the steps from the previous section. The mailing list doesn't own the messages sent to it (we don't see "From: clamav-users"). Recipients should whitelist the mailing list per: https://dmarc.org/wiki/FAQ#Is_there_special_han

Re: [clamav-users] ERROR 403: Forbidden

2018-08-28 Thread Maarten Broekman
Forbidden > 2018-08-28 13:37:49 ERROR 403: Forbidden. > > > ------ > *From:* clamav-users on behalf of > Maarten Broekman > *Sent:* 28 August 2018 13:16 > *To:* ClamAV users ML > *Subject:* Re: [clamav-users] ERROR 403: Forbidden > > Gotcha. Yeah, the error is

Re: [clamav-users] ERROR 403: Forbidden

2018-08-28 Thread Maarten Broekman
nt error/response as I'm, having to use the normal update method > to ensure it uses the correct IP) > > > > ------ > *From:* clamav-users on behalf of > Maarten Broekman > *Sent:* 28 August 2018 11:24 > *To:* ClamAV users ML > *Subject:*

Re: [clamav-users] ERROR 403: Forbidden

2018-08-28 Thread Maarten Broekman
> On Aug 28, 2018, at 06:17, Jon Roberts wrote: > > From the troubled server: > > wget http://database.clamav.net/main-55.cdiff > --2018-08-28 11:14:43-- http://database.clamav.net/main-55.cdiff > Resolving database.clamav.net... 104.16.189.138, 104.16.187.138, > 104.16.188.138, ... > Connect

Re: [clamav-users] Help With clamscan vs clamdscan

2018-08-20 Thread Maarten Broekman
Yep. That's fine. /tmp or /var/tmp (or /run) is usually where it goes anyway. Welcome to the ClamAV club :) On Mon, Aug 20, 2018 at 7:45 PM Michael Newman wrote: > > On Aug 20, 2018, at 23:00, *Maarten Broekman* wrote: > > > For clamdscan to work you need to enable Loc

Re: [clamav-users] Help With clamscan vs clamdscan

2018-08-20 Thread Maarten Broekman
For clamdscan to work you need to enable LocalSocket at the very least. On Mon, Aug 20, 2018 at 5:32 PM Michael Newman wrote: > > On Aug 20, 2018, at 23:00, Al Varnell wrote: > > > Please post the results of the following Terminal Command: > > sudo clamconf > > > MrMuscle:~ mnewman$ sudo clamc

Re: [clamav-users] Help With clamscan vs clamdscan

2018-08-20 Thread Maarten Broekman
Check the logs and config files. Clamscan loads the databases itself before running. It does not need clamd to be running in order to work. Clamdscan attempts to use a socket to talk with clamd for the scanning of files. If there is an error, one of two things is happening: Either the permission

Re: [clamav-users] Same file, different signatures detected

2018-08-07 Thread Maarten Broekman
JAR files can be unpacked like tarballs so it is likely that there is a common file in each that matches those hashes. Maarten Sent from a tiny keyboard > On Aug 7, 2018, at 04:54, Albrecht, Peter wrote: > > Hi, > >> I don't see how that is even remotely possibly. They are three completely >

Re: [clamav-users] Is there any documentation on what signatures mean?

2018-06-28 Thread Maarten Broekman
hat signature is defined, ie. what content > it considers malicious. > > In order to decide on an appropriate course of action I'd like to know > what the perceived threat is, ie. *why* someone thought that a file > matching that particular signature would be malicious. > Th

Re: [clamav-users] Is there any documentation on what signatures mean?

2018-06-28 Thread Maarten Broekman
Answered TL;Dr Use sigtool to find and decode the signature. Sent from a tiny keyboard > On Jun 28, 2018, at 06:57, Nikita Yerenkov-Scott > wrote: > > Hello, > > A question on this matter exists on this Linux site: > https://askubuntu.com/questions/571342/clamav-virus-detections-documentat

Re: [clamav-users] FW:

2018-04-25 Thread Maarten Broekman
ClamAV can scan any type of file. That said, it can unpack certain kinds of archives and scan the files inside. Also, ClamAV signatures can be written for specific kinds of files (PE files, text, etc) and they will only be used for those types. I haven’t tried increasing the size beyond that so

Re: [clamav-users] ping database.clamav.net

2018-03-29 Thread Maarten Broekman
29, 2018 at 8:10 AM, Régis Houssin wrote: > yes but for this IP this not a clamav website ! > > dev.lepartidegauche.fr (178.33.105.132) > > > thank you > > > Le 29/03/2018 à 13:11, Maarten Broekman a écrit : > > Régis, > > This is a feature of DNS wh

Re: [clamav-users] Clamav Definitions vs. Devel-Clamav Definitions

2018-03-29 Thread Maarten Broekman
only found the standard signature set. > > Also - in case I do get a hold of extra signatures - would I have to merge > them into the existing definition set or simply run these in a separate > scan ? > > Thanks. > > Peter > > > On Thu, Mar 29, 2018 at 4:04 AM, Maa

Re: [clamav-users] ping database.clamav.net

2018-03-29 Thread Maarten Broekman
Régis, This is a feature of DNS where a name can resolve to multiple IPs for load balancing and resiliency. Depending on what serves ‘database.clamav.net’ it may just be a round-robin response or it may resolve to an IP based on which one is responding faster to requests or simply which one ha

Re: [clamav-users] Clamav Definitions vs. Devel-Clamav Definitions

2018-03-29 Thread Maarten Broekman
Hi Peter, Given the name of that virus, I would guess that your hosting provider is using some extra virus definitions that aren’t part of the standard ClamAV distribution. It doesn’t have to do with the engine in this case. You should get in touch with them about that. Maarten Broekman

Re: [clamav-users] Question regarding SIGUSR2 and clamd

2018-03-22 Thread Maarten Broekman
You might be able to open the socket that clamd is listening on and attempt to ping it. I forget if it replies with PONG while it's in the middle of reloading. It's been a while since I tried to do that. On Thu, Mar 22, 2018 at 6:40 AM, Ralf Hildebrandt < ralf.hildebra...@charite.de> wrote: > O

Re: [clamav-users] ClamAV performance overhead on RHEL & Solaris

2018-03-17 Thread Maarten Broekman
fter the swap, the memory for the old signatures > would be released by the loader thread. This would take more memory > during signature update, but it might be a worthwhile option. > > > On Sat, 17 Mar 2018 17:17:17 -0400 > Maarten Broekman wrote: > >> Some considerati

Re: [clamav-users] ClamAV performance overhead on RHEL & Solaris

2018-03-17 Thread Maarten Broekman
Some considerations: - the longest “delay” will occur when reloading signature databases. If reducing the delay is important, run multiple instances with smaller signatures in each. ESPECIALLY, if you’re going to writing your own story signatures or using databases that change often. - scanning

Re: [clamav-users] Recommended workstation usage?

2017-12-20 Thread Maarten Broekman
There are far more than 31 signatures that have the potential to impact Linux systems. There are, in truth, over 23,000 signatures that are able to detect malware on Linux and Unix systems. Most "Linux" signatures only contain the word Unix, however. Additionally, keep in mind that these are only f

[clamav-users] Massive amount of false positives on Html.Trojan.Iframe-6390207-0 / Html.Trojan.Iframe-6390207-0

2017-12-06 Thread Maarten Broekman
VIRUS NAME: Html.Trojan.Iframe-6390207-0 TDB: Engine:51-255,FileSize:16384-65536,Target:3 LOGICAL EXPRESSION: 0 * SUBSIG ID 0 +-> OFFSET: ANY +-> SIGMOD: NONE +-> DECODED SUBSIGNATURE: >http://lists.clamav.net/cgi-bin/mailman/listinfo/clamav-users Help us build a comprehensive ClamAV guide: h

Re: [clamav-users] Unable to download database

2017-08-23 Thread Maarten Broekman
204.130.133.50 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms *--- 207.57.106.31 ping statistics ---* *1 packets transmitted, 0 received, 100% packet loss, time 0ms* On Wed, Aug 23, 2017 at 1:26 PM, Maarten Broekman < maarten.broek...@gmail.com> wrote: >

Re: [clamav-users] Unable to download database

2017-08-23 Thread Maarten Broekman
For me, 3 of the 5 db.local.clamav.net addresses have 100% packet loss: $ host db.local.clamav.net db.local.clamav.net is an alias for db.us.rr.clamav.net. db.us.rr.clamav.net has address 200.236.31.1 db.us.rr.clamav.net has address 208.72.56.53 db.us.rr.clamav.net has address 69.12.162.28 db.us.r

Re: [clamav-users] ClamAV md5 hash DB

2017-07-12 Thread Maarten Broekman
Sorry for the double reply... You can also use sigtool --find-sigs to find the signature that it's reporting and isolate it. On Wed, Jul 12, 2017 at 8:59 AM, Maarten Broekman < maarten.broek...@gmail.com> wrote: > If the tarball doesn't match the MD5 hash then it's lik

Re: [clamav-users] ClamAV md5 hash DB

2017-07-12 Thread Maarten Broekman
If the tarball doesn't match the MD5 hash then it's likely that a file within the tarball matches the malicious MD5. ClamAV looks at all the files within tarballs and zip files individually as well as the tarball as a whole. --Maarten On Wed, Jul 12, 2017 at 8:44 AM, Srinivasreddy R < srinivasred

Re: [clamav-users] Auto Scan any plugged in usb strogage device with ClamAV

2017-07-10 Thread Maarten Broekman
The functionality to do it on OS X is OS X related, not ClamAV related. Your best option would be to ask around on Mac OS X developer forums. On Mon, Jul 10, 2017 at 6:07 AM, crazy thinker wrote: > I want to do it on teriminal. Could you explain core logic that would > be used in this featur

Re: [clamav-users] Question about ClamScan

2017-05-12 Thread Maarten Broekman
Crazy, the 'users' mailing list is what you are sending this questions to. You keep addressing this list as 'developers'. There is a separate mailing list where developers who write the internals of ClamAV talk. That is the appropriate forum for ALL of your questions. You really haven't had a s

Re: [clamav-users] Question about ClamAV

2017-05-11 Thread Maarten Broekman
Your understanding of scanning techniques is flawed at best (I believe this has been pointed out multiple times). Both techniques have issues with false positive and false negative matches. The only significant difference is how they perform against unknown threats. In that regard, heuristic scanni

[clamav-users] Using 'allmatch' with streams

2016-12-07 Thread Maarten Broekman
Is anyone able to speak to whether allowing 'allmatch' to work with streams is on the map? 'allmatch' was one of the features that I was really looking forward to, but the fact that it doesn't work when you are scanning streams is a major letdown. --Maarten ___

Re: [clamav-users] FPs for Txt.Malware.Agent-XXXXX

2016-11-22 Thread Maarten Broekman
I am seeing these mostly on files that comprise the OpenLayers library in phpMyAdmin 4. On Tue, Nov 22, 2016 at 2:11 PM, Joel Esler (jesler) wrote: > Mark, > > Thanks for the feedback, you are right, I am experiencing some high counts > in the Txt.Malware.Agent family. > > I’ve disabled this eng

Re: [clamav-users] How to trick clamav

2016-09-19 Thread Maarten Broekman
You would probably want to set up a private mirror on your laptop and then use that to sync your desktop. That way you can update your laptop whenever you want and when you're connected to you home network, you can update your desktop. https://www.clamav.net/documents/private-local-mirrors --Maa

Re: [clamav-users] False positives submitted but still viewed as viruses

2016-02-08 Thread Maarten Broekman
If you don't want to wait, you can also whitelist the files in your own database files. Run either of the following: sigtool --sha256 sigtool --md5 Put the output into a '.fp' file in your db directory and that should whitelist that specific file so it's not reported. --Maarten On Mon, F

Re: [clamav-users] Hint for creating signatures

2014-09-08 Thread Maarten Broekman
s build a comprehensive ClamAV guide: > https://github.com/vrtadmin/clamav-faq > > http://www.clamav.net/contact.html#ml > -- Maarten Broekman Endurance International Group vDeck Senior Linux Systems Administrator / PCI ISA ___ Help us build a comprehensive ClamAV guide: https://github.com/vrtadmin/clamav-faq http://www.clamav.net/contact.html#ml

Re: [clamav-users] How can I run clamdscan as a standard user?

2013-12-03 Thread Maarten Broekman
What are the permissions on the clamd socket file? You might also try setting up clamd to listen on an IP/port and connect to it that way if the unix socket doesn't work. --Maarten On 12/3/13, 10:23 AM, "mcmurchy1917-cla...@yahoo.co.uk" wrote: >Hello Henri > >Results below - > >ls -la nw1700.

Re: [clamav-users] LibClamAV Warnings

2012-11-16 Thread Maarten Broekman
gt; Try now? > > On Fri, Nov 16, 2012 at 11:41 AM, Maarten Broekman > wrote: > > I have a bugzilla account but I don't have the right permissions to > > see that bug. > > You are not authorized to access bug #6139. > > > > --Maar

Re: [clamav-users] LibClamAV Warnings

2012-11-16 Thread Maarten Broekman
bugzilla account, you can zip it > up, password protect it and then send it to me. > > Matt > > On Fri, Nov 16, 2012 at 11:30 AM, Maarten Broekman > wrote: > > Yep. I have a .js file that triggers the Bytecode 37 error. I've > > filed a bug against th

Re: [clamav-users] LibClamAV Warnings

2012-11-16 Thread Maarten Broekman
do you have a sample that triggers > this behavior? > > Matt > > On Fri, Nov 16, 2012 at 11:04 AM, Maarten Broekman > wrote: > >> -Original Message- > >> LibClamAV Warning: Bytecode run timed out in interpreter after > 765000 > >> opcodes

Re: [clamav-users] LibClamAV Warnings

2012-11-16 Thread Maarten Broekman
> -Original Message- > LibClamAV Warning: Bytecode run timed out in interpreter after 765000 > opcodes LibClamAV Warning: Bytcode 16 failed to run: Unknown error code > LibClamAV Warning: Bytecode runtime error at line 95, col 13 LibClamAV > Error: Opcode 45 of type 0 is not implemented yet

Re: [clamav-users] Deep scanning of image files

2012-10-23 Thread Maarten Broekman
t; Maarten, can you help us track this by adding a bug at > https://bugzilla.clamav.net/? > > Thanks, > > Matt Done. Bug 5978. Thanks, Maarten > > On Tue, Oct 23, 2012 at 2:18 PM, Maarten Broekman > wrote: > > One thing I'm seeing more and more of is mal

[clamav-users] Deep scanning of image files

2012-10-23 Thread Maarten Broekman
One thing I'm seeing more and more of is malware code (be it PHP or ASP) embedded after GIF headers. ClamAV sees the GIF header and treats it like an image (properly), but then ClamAV sees an HTML signature later in the file. However, it doesn't do any normalization on that HTML data. Would it b

Re: [clamav-users] Which is the current stable release?

2012-09-17 Thread Maarten Broekman
0.97.6 is available from the SourceForge download page. > -Original Message- > From: clamav-users-boun...@lists.clamav.net [mailto:clamav-users- > boun...@lists.clamav.net] On Behalf Of Frank Chan > Sent: Monday, September 17, 2012 2:41 PM > To: clamav-users@lists.clamav.net >> ClamAV use

Re: [clamav-users] Generating signatures for malware

2012-08-30 Thread Maarten Broekman
> -Original Message- > > Some of the phishing content that I'm finding is resulting in hex > > dumps in the 10k+ character range and I think it's more dangerous to > > replace sections with '*' than to replace certain substrings with > > specific length wildcards. > > Please would someone

Re: [clamav-users] Generating signatures for malware

2012-08-29 Thread Maarten Broekman
> -Original Message- > > > The rate of false positives is wholly dependent on the strings that > > > you are replacing with wildcards. > > > > > > As an example, when generating signatures to identify phishing > > > content (say, content targeting bank customers), I wanted to be > able > >

Re: [clamav-users] Generating signatures for malware

2012-08-29 Thread Maarten Broekman
> -Original Message- > Despite the statement of your objective it isn't clear to me what you > think you're going to achieve. My expectation would be a very large > increase in the false positive rates if you attempt to use signatures > modified in the way you describe. Can you be more sp

[clamav-users] Generating signatures for malware

2012-08-28 Thread Maarten Broekman
Does anyone know of a tool that would take strings in a hex signature and turn them into appropriate wildcards? For instance, I want to strip out all the "http://"; and "https://"; and replace them with {7-8} to reduce the size of the signature and get more 'useful' strings in the signature? Ther

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