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Virus:TR/Buzus.C.2
Date discovered:26/07/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:100.352 Bytes
MD5 checksum:5e757290a697c5c5431e4c670912e821
IVDF version:7.10.09.196 - Monday, July 26, 2010

 General Aliases:
   •  Sophos: Troj/Buzus-DP
   •  Panda: Trj/Buzus.AH
   •  Eset: Win32/Bflient.K


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads malicious files
   • Drops malicious files
   • Registry modification
   • Makes use of software vulnerability
        CVE-2007-1204
        MS07-019

 Files It copies itself to the following location:
   • %HOME%\Application Data\ltzqai.exe



The following files are created:

%SYSDIR%\msvmiode.exe Furthermore it gets executed after it was fully created.
%HOME%\Application Data\027340..exe Furthermore it gets executed after it was fully created.
%TEMPDIR%\027340.exe Furthermore it gets executed after it was fully created.
%WINDIR%\cfdrive32.exe Furthermore it gets executed after it was fully created.
%TEMPDIR%\0316.exe Furthermore it gets executed after it was fully created.
%temporary internet files%\game2[1]._
%temporary internet files%\isvs[1]._



It tries to download some files:

The location is the following:
   • http://208.53.183.124/**********


The location is the following:
   • http://208.53.183.250/**********


The location is the following:
   • http://208.53.183.46/**********

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

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Taskman"="%HOME%\Application Data\ltzqai.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "MSODESNV7"="%SYSDIR%\msvmiode.exe"
   • "Microsoft Driver Setup"="%WINDIR%\cfdrive32.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\
   Run]
   • "Microsoft Driver Setup"="%WINDIR%\cfdrive32.exe"



It creates the following entry in order to bypass the Windows XP firewall:

[HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\
   FirewallPolicy\StandardProfile]
   • "EnableFirewall"=dword:0x00000000

 Backdoor Contact server:
The following:
   • ff.fjp**********.com:9955 (UDP)


 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Petre Galan on Monday, November 8, 2010
Description updated by Petre Galan on Thursday, November 11, 2010

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