On Fri, 31 Mar 2017 14:01:29 -0400 Steven Morgan <smor...@sourcefire.com> wrote:
>
Thanks Steve. Is then there a way to disable the pe rules or do I just have to
ignore these messages?
--Mark
> Mark,
>
> The pe import module of yara rules is not currently implemented in ClamAV.
> Other specifics of using yara rules in Clam may be found in
> docs/signatures.pdf. Also, looks like errors in EMAIL_Cryptowall.yar yara
> rule?
>
> Hope this helps,
> Steve
>
> On Fri, Mar 31, 2017 at 1:45 PM, Mark Foley <mfo...@novatec-inc.com> wrote:
>
> > Per advice on this list, I downloaded and installed the
> > clamav-unofficial-sigs
> > scripts from the link on Sanesecurity.
> >
> > I've not been able to get it running. Two problems:
> >
> > 1. The /etc/cron.d/clamav-unofficial-sigs cron script won't run from
> > crond. I get an email:
> >
> > /bin/sh: clamav: command not found
> >
> > I've searched the computer and the clamav-unofficial-sigs.sh script
> > looking for a
> > reference to a clamav command and simply cannot find such a command. I've
> > sprinkles `echo` statements throughout clamav-unofficial-sigs.sh and
> > redirected
> > the cron script's output to a log file. I never get anything in the
> > logfile.
> > Yet, if I run clamav-unofficial-sigs.sh as root manually, it runs fine.
> >
> > 2. I run a cron'd clamscan job to scan mail folders several time a day. I
> > get
> > the following errors which are new since installing the unofficial-sigs:
> >
> > LibClamAV Error: yyerror(): /var/lib/clamav/antidebug_antivm.yar line 497
> > undefined identifier "pe"
> > LibClamAV Error: yyerror(): /var/lib/clamav/antidebug_antivm.yar line 512
> > undefined identifier "pe"
> > LibClamAV Error: yyerror(): /var/lib/clamav/antidebug_antivm.yar line 528
> > undefined identifier "pe"
> > LibClamAV Error: yyerror(): /var/lib/clamav/antidebug_antivm.yar line 544
> > undefined identifier "pe"
> > LibClamAV Error: yyerror(): /var/lib/clamav/antidebug_antivm.yar line 557
> > undefined identifier "pe"
> > LibClamAV Error: yyerror(): /var/lib/clamav/antidebug_antivm.yar line 603
> > undefined identifier "pe"
> > LibClamAV Error: yyerror(): /var/lib/clamav/antidebug_antivm.yar line 614
> > undefined identifier "pe"
> > LibClamAV Error: cli_loadyara: failed to parse rules file
> > /var/lib/clamav/antidebug_antivm.yar, error count 7
> > LibClamAV Error: yyerror(): /var/lib/clamav/EMAIL_Cryptowall.yar line 34
> > duplicate identifier "CryptoWall_Resume_phish"
> > LibClamAV Error: yyerror(): /var/lib/clamav/EMAIL_Cryptowall.yar line 52
> > duplicate identifier "docx_macro"
> > LibClamAV Error: cli_loadyara: failed to parse rules file
> > /var/lib/clamav/EMAIL_Cryptowall.yar, error count 2
> >
> > The lines at /var/lib/clamav/antidebug_antivm.yar line 497 are:
> >
> > 496 contition:
> > 497 pe.imports("kernel32.dll","CheckRemoteDebuggerPresent")
> > and
> > 498 pe.imports("kernel32.dll","IsDebuggerPresent")
> >
> > These seem like rather basic programming bugs. Nevertheless, it does
> > appear to
> > catch new signatures, e.g.:
> >
> > /home/HPRS/mpress/Maildir/.Deleted Items/cur/1463485456.
> > M955042P32209.mail,S=13067,W=13269:2,S:
> > Sanesecurity.Foxhole.Zip_fs226.UNOFFICIAL
> > FOUND
> > /home/HPRS/mpress/Maildir/.Deleted Items/cur/1460374151.
> > M124643P21974.mail,S=30684,W=31217:2,S:
> > Sanesecurity.Spam.12404.Ml.UNOFFICIAL
> > FOUND
> > /home/HPRS/shay/Maildir/.Trash/cur/1485781802.M776532P6090.mail,S=2905,W=
> > 2971:2,S!(1)MAIL:mixedtextportion: Sanesecurity.Junk.33365.UNOFFICIAL
> > FOUND
> > /home/HPRS/shay/Maildir/.Trash/cur/1486393658.M60634P26487.mail,S=48881,W=49823:2,S:
> > Sanesecurity.Spam.12427.FakeRenew.UNOFFICIAL FOUND
> > /home/HPRS/dsmith/Maildir/.Deleted Items.Sent/cur/1443025877.
> > M266324P18041.mail,S=22511,W=22844:2,S:
> > Sanesecurity.Foxhole.Zip_Wordexe.1.UNOFFICIAL
> > FOUND
> >
> > etc.
> >
> > Has anyone on this list encountered the same problem and if so were you
> > able to
> > fix them? I'm running Slackware.
> >
> > Thanks, Mark
> > _______________________________________________
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> > clamav-users@lists.clamav.net
> > http://lists.clamav.net/cgi-bin/mailman/listinfo/clamav-users
> >
> >
> > Help us build a comprehensive ClamAV guide:
> > https://github.com/vrtadmin/clamav-faq
> >
> > http://www.clamav.net/contact.html#ml
> >
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>
>
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>
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