TR/Drop.RKit.BI - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/Drop.RKit.BI
Date discovered:	25/07/2008
Type:	Trojan
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	Yes
File size:	40.960 Bytes
MD5 checksum:	89601577d78bf4f507cf1bb2bcc38d95
IVDF version:	7.00.05.168 - Fri, 25 Jul 2008 08:24 (GMT+1)

General Method of propagation:
   • No own spreading routine

Aliases:
   • Symantec: Trojan.Fakeavalert
   • Mcafee: FakeAlert-AT trojan
   • Kaspersky: Hoax.Win32.Renos.vaqx
   • F-Secure: Hoax.Win32.Renos.vaqx
   • Sophos: Troj/Spywad-AZ
   • Panda: Adware/VapSup
   • Grisoft: Downloader.FraudLoad.C
   • Eset: Win32/Adware.UltimateDefender application
   • Bitdefender: Trojan.Crypt.EQ

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Drops malicious files
   • Registry modification

Files It deletes the initially executed copy of itself.

The following files are created:

– %SYSDIR%\dllcache\figaro.sys Further investigation pointed out that this file is malware, too. Detected as: TR/Rootkit.Gen

– %SYSDIR%\braviax.exe Furthermore it gets executed after it was fully created. Detected as: TR/Dldr.Ag.KLI.9216

– %WINDIR%\delself.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.

Registry The following registry keys are added in order to run the processes after reboot:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
• braviax="%SYSDIR%\braviax.exe"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
• braviax="%SYSDIR%\braviax.exe"

File details Programming language:
The malware program was written in MS Visual C++.

See a brief description here.

Description inserted by Thomas Wegele on Wed, 27 Aug 2008 13:25 (GMT+1)
Description updated by Thomas Wegele on Wed, 27 Aug 2008 13:36 (GMT+1)

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