Thanks Ken.
I think I am not set to store these emails/attachments, because I don't
think we have the resend function - and I honestly am sure I don't have
enough space in our installation to store those currently.
I am increasing the storage at colo right now, so I may want to start
doing that - do you know what I need enabled in ASSP to store the entire
email and attachments? Is there an automated cleanup of those files,
say after some time period?
Thanks!
- Bob
On 3/13/2020 11:05 AM, K Post wrote:
Thomas-
Having a sandbox that could test/scan and auto release the myriad of
PDF's with javascript in them would be a big boost to our tiny charity.
No more staff requests to let a PDF through!! Can you provide some
more information on what opensource packages you've selected to piece
together? The integration into ASSP sounds fantastic! I think your
cloud offering would get some real traction with those who can afford it
and have policies that allow external scanning of emails.
Bob-
I do nightly block reporting reviews and also get requests from users
throughout the day (10x a day or more sometimes). It's a pain, but I've
found it necessary to keep ASSP healthy given the variety and sometimes
not of our messages. Releasing is easy through the ASSP GUI: open the
mail from the log or the block report, select Resend and Force
Attachments. You used to have to hand edit the header, but Thomas was
gracious enough to entertain my suggestion of having a drop down to do
it. That alone saved me a good amount of brain power :)
On Wed, Mar 11, 2020 at 6:58 AM Thomas Eckardt
<thomas.ecka...@thockar.com <mailto:thomas.ecka...@thockar.com>> wrote:
You can buy such sandbox systems from different vendors (eg.
checkpoint, cisco .. and some more - prices from 30.000 EUR to
500.000 EUR). Or you can build your own sandbox system (like me),
based on heavily customized open source software.
goals:
- 100% build on open source (except prof. virus scanners for
Brain-IRMA)
- is able to run in every cloud or your own cloud (DMZ)
- requires zero customer system maintenance
- easy and functional WEB-interface for the quarantine ( virus /
banned) with ASSP GUI integration (show log, show mail), the sandbox
analyzer, system monitoring
- integration in to ASSP (special actions and header mods to prevent
unneeded and expensive sandbox actions)
- variable mail delivery and admin/user notifications
- full VirusTotal integration (full attachment scan)
- preconfigured honeypot analyses windows VM's are integrated - any
customized builds can be integrated
disadvantage:
- password protected attachments and attachments with an unknown
type are banned to 100% and have to be manually released after a
manual check (like in every sandbox)
- prof. virus scanners for Brain-IRMA and VirusTotal may produce
extra costs
There are currently two of these systems running since nearly one
year. A small one on VMWare ESXi 6.7 and one on ProxmoxVE for ~800
office users.
I plan offer this as a cloud service within this year.
Thomas
Von: "K Post" <nntp.p...@gmail.com <mailto:nntp.p...@gmail.com>>
An: "For Users of ASSP" <assp-user@lists.sourceforge.net
<mailto:assp-user@lists.sourceforge.net>>
Datum: 10.03.2020 17:16
Betreff: Re: [Assp-user] PDF Scanning
------------------------------------------------------------------------
This is incredible! Can you give some detail on what the system is
that does this analysis, scoring, etc. Then once confirmed okay, how
does the user get the attachment that's been cleared? This would be
a HUGE benefit to my user base. There's tons of pdf's that I'm
releasing on a daily basis.
Thanks
On Tue, Mar 10, 2020 at 10:36 AM Thomas Eckardt
<_Thomas.Eckardt@thockar.com_ <mailto:thomas.ecka...@thockar.com>>
wrote:
Sorry - you wanted to know how we deal with such attachments.
For me, ASSP_AFC marks them for a sandbox system for analysing and
let them all pass. The sandbox system extracts all attachments to
their atomic parts, let some windows VM's open every single part or
attachment and analyses every VM memory for malicious code and actions.
The sandbox system has ~600 blocking rules and several thousand
scoring rules. If an attachment is classified as bad, the mail is
moved to a quarantine for manual investigation.
Thomas
Von: "Robert K Coffman Jr. -Info From Data Corp."
<_bcoffman@infofromdata.com_ <mailto:bcoff...@infofromdata.com>>
An: _assp-user@lists.sourceforge.net_
<mailto:assp-user@lists.sourceforge.net>
Datum: 10.03.2020 12:23
Betreff: Re: [Assp-user] PDF Scanning
------------------------------------------------------------------------
They all have this in common:
'prohibited JavaScript in PDF file' - SHA256:
D6CB05FFD99283A4C5C6BEAF37D0274B985E1D47DD3B12F08B348F42CC1A60CA
However the checksums vary unfortunately.
Thanks!
- Bob
On 3/10/2020 2:29 AM, Thomas Eckardt wrote:
> It would be nice to know, why these PDF's are blocked - the reason is
> shown in the maillog.txt.
>
> Thomas
>
>
>
>
>
> Von: "Robert K Coffman Jr. -Info From Data Corp."
> <_bcoffman@infofromdata.com_ <mailto:bcoff...@infofromdata.com>>
> An: _assp-user@lists.sourceforge.net_
<mailto:assp-user@lists.sourceforge.net>
> Datum: 09.03.2020 17:53
> Betreff: [Assp-user] PDF Scanning
> ------------------------------------------------------------------------
>
>
>
> We are getting a large number of false positives on PDFs received.
>
> What are other people doing with these?
>
> Thanks!
>
> - Bob
>
>
>
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>
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