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Date discovered:25/03/2009
Type:Backdoor Server
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:3.195.458 Bytes
MD5 checksum:489027d28fb7b9e95ff446322c0db04e
IVDF version:

 General Method of propagation:
• Autorun feature

   •  Mcafee: W32/Autorun.worm.cp virus
   •  Panda: W32/IRCBot.CKD
   •  Eset: Win32/AutoRun.Agent.MY
   •  Bitdefender: Backdoor.Agent.AAGS

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

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

 Files It copies itself to the following locations:
   • %WINDIR%\security\lsass.exe
   • %drive%\viewfiles.exe

The following files are created:

– A file that is for temporary use and it might be deleted afterwards:
   • %TEMPDIR%\lsasswin

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

 Registry To each registry key one of the values is added in order to run the processes after reboot:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Intranet controller"="%WINDIR%\security\lsass.exe"

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Intranet controller"="%WINDIR%\security\lsass.exe"

The following registry key is added:

– [HKLM\SOFTWARE\Security]
   • "version"="12"

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

Server: serv01.colo.**********.hu
Port: 31091
Channel: #support#
Nickname: %computer name%
Password: syslock

 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 30, 2009
Description updated by Petre Galan on Monday, November 30, 2009

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