Authors: YAG KOHHA (skyhole@gmail.com), Lame
Title: Backdoor in RelevantKnowledge adware (What are we fighting
for?)
Vendor: TMRG, Inc.
Description:
RelevantKnowledge is an adware distributed with different shareware
projects, e.g. Artisian Burner.
RelevantKnowledge was found to contain backdoor proxy component
rlvknlg.exe (Marketscore OSSProxy), which is configured to allow
incoming network connections on TCP/8254, probably acts as open proxy
and also performs keylogging and monitoring for active windows content.
Component can not be disabled by user.
Details (by YAG KOHHA, Lame):
Recently I download freeware CD burner software to create some absolutely legal
copies
from ISO image. Of cause where is adware in installer which promise to "boost
your
internet Connection" and "free coupons".
After I finished my works I uninstall burner and adware via add/remove programs
and reboot
the computer. After reboot I check Windows Firewall rules. In exception tab I
found
RelevantKnowledge application. I map'ed my host and found strange HTTP server
on port 8254
which answers as OSSProxy. I check netstat and found that this port used by
%windir%\system32\rlvknlg.exe process which also referred in
Software\Mircosoft\Windows\CurrentVersion\Run\ key. I check this file and found
that this
programs hooks keyboard, mouse, current window and post info to the
http://www.relevantknowledge.com/upgraderesult.aspx site via locally installed
proxy. I
check this site and found that "privacy procedures are regularly audited and
certified by
the nationally-recognized firm, Ernst & Young, who assure that we conform with
the
international trust services and privacy principles developed and managed by
the American
Institute of Certified Public Accountants"
(http://www.relevantknowledge.com/RKPrivacy.aspx).
So guys, may be I miss something. If I see software which doesn't get removed
via Add/Remove
Programs, breaks my firewall settings, hook my keyboard and mouse, and has
remote
management capabilities, I call it Remote Access Trojan. What should I do to be
"conform
with the international trust Services" and Ernst & Young say: "This is good
code, Joe,
well done!" when I write new all-in-one client for my botnet? Or this is part
of anti
piracy program? And MPAA want to know which films I burn on DVD? Or this is
Uncle Sam's
hand? I don't understand.
YAG KOHHA, Lame
File with binary and disassembly can be found here:
http://www.secyrity.nnov.ru/files/ossproxybd.zip
Archive password is "backdoor".
--
/3APA3A
http://www.security.nnov.ru/
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
