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Date discovered:08/04/2011
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:32.422 Bytes
MD5 checksum:2dc74c3c32be232df6e50dd3e0247d4c
VDF version:
IVDF version:

 General Aliases:
   •  Kaspersky: Backdoor.Win32.IRCBot.swa
   •  F-Secure: Backdoor.Win32.IRCBot.swa
   •  Bitdefender: Backdoor.IRCBot.ADDU
   •  GData: Backdoor.IRCBot.ADDU
   •  DrWeb: Trojan.MulDrop2.11004

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:
   • %recycle bin%\ko-2-3-41-0000010000-0000010000-0000010000-0100\wincache.exe

The following file is created:

%recycle bin%\ko-2-3-41-0000010000-0000010000-0000010000-0100\Desktop.ini

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

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Taskman"="%recycle bin%\kos-2-3-41-0000010000-0000010000-0000010000-0100\wincache.exe"

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

Server: dc.tot**********.net
Port: 5943

Server: dc.tvt**********.info
Port: 5943

 Injection – It injects itself as a remote thread into a process.

    Process name:
   • explorer.exe

 Miscellaneous Mutex:
It creates the following Mutex:
   • fsmgr

 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, June 6, 2011
Description updated by Petre Galan on Monday, June 6, 2011

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