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Virus:TR/Ircbrute.A.855
Date discovered:01/10/2010
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:129.024 Bytes
MD5 checksum:7BD90F47569E40747954E7F53C2BAE5A
VDF version:7.10.05.129
IVDF version:7.10.12.94 - Friday, October 1, 2010

 General Aliases:
   •  Kaspersky: Trojan.Win32.Scar.ebls
   •  Sophos: Troj/Agent-SCY
   •  Microsoft: Trojan:Win32/Ircbrute


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows 7


Side effects:
   • Third party control
   • Drops files
   • Lowers security settings
   • Registry modification

 Files It copies itself to the following location:
   • %APPDATA%\J-93219-1923-12901\msnmsg32.exe

 Registry One of the following values is added in order to run the process after reboot:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Mobile Device Service"="%APPDATA%\J-93219-1923-12901\msnmsg32.exe"



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

– [HKLM\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\
   FirewallPolicy\StandardProfile\AuthorizedApplications\List]
   • "%APPDATA%\J-93219-1923-12901\msnmsg32.exe"="%APPDATA%\J-93219-1923-12901\msnmsg32.exe:*:Enabled:Mobile
      Device Service"

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

Server: **********m.hoodrich.ru
Port: 4042
Nickname: %random character string%


– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • disconnect from IRC server
    • Join IRC channel
    • Leave IRC channel

 File details Programming language:
The malware program was written in MS Visual C++.

Description inserted by Andrei Ilie on Tuesday, September 20, 2011
Description updated by Andrei Ilie on Wednesday, September 21, 2011

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