Virus:Worm/IrcBot.50689
Date discovered:09/12/2008
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:753.664 Bytes
MD5 checksum:e5a140ae274a999bdf359ab2083912de
IVDF version:7.01.00.208 - Tuesday, December 9, 2008

 General Methods of propagation:
   • Autorun feature
   • Messenger


Aliases:
   •  Mcafee: W32/Sdbot.worm virus
   •  Bitdefender: Backdoor.IRCBot.ACZV
   •  Eset: Win32/AutoRun.IRCBot.GF


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 locations:
   • %drive%\RECYCLER\runme.exe
   • %WINDIR%\clsidsrv.exe



The following file is created:

– %drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%




It tries to executes the following file:

– Filename:
   • "%WINDIR%\clsidsrv.exe"

 Registry The following registry key is added in order to run the process after reboot:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Clsid Service"="clsidsrv.exe"

–  [HKLM\SOFTWARE\Microsoft\PCHealth\ErrorReporting\DW]
   • DWFileTreeRoot

 Messenger It is spreading via Messenger. The characteristics are described below:

– Windows Live Messenger

The URL then refers to a copy of the described malware. If the user downloads and executes this file the infection process will start again.

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

Server: 203.200.**********.109
Port: 6667
Channel: #bot
Nickname: [00|USA|%number%]

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

Description inserted by Petre Galan on Wednesday, August 11, 2010
Description updated by Petre Galan on Wednesday, August 11, 2010

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