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Date discovered:16/06/2010
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:143.361 Bytes
MD5 checksum:3afdc2fa17897c6dc460f1713b787006
IVDF version:

 General Aliases:
   •  Sophos: W32/VB-ESQ
   •  Bitdefender: IRC-Worm.Generic.12484
   •  Panda: W32/IrcBot.CXZ
   •  Eset: Win32/AutoRun.IRCBot.FL

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

Side effects:
   • Third party control
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following location:
   • %TEMPDIR%\Winxss.exe

The following file is created:


It tries to execute the following file:

– Filename:
   • "%TEMPDIR%\Winxss.exe"

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

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Firewall"="%TEMPDIR%\Winxss.exe"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Firewall"="%TEMPDIR%\Winxss.exe"

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: 95.142.16**********.184
Port: 3211
Channel: #sWv4#
Nickname: {NEW}[USA][XP-SP3]%number%

 File details Programming language:
The malware program was written in Visual Basic.

Description inserted by Petre Galan on Wednesday, September 22, 2010
Description updated by Petre Galan on Wednesday, September 22, 2010

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