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Virus:TR/MSILInjector.2.8
Date discovered:18/07/2011
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:153.600 Bytes
MD5 checksum:BD909029ECACAE1F6B66104674D11E54
VDF version:7.11.11.175 - Monday, July 18, 2011
IVDF version:7.11.11.175 - Monday, July 18, 2011

 General Aliases:
   •  Kaspersky: Trojan.Win32.Diple.wll
   •  Sophos: Mal/Buzus-GA
AhnLab: Win-Trojan/Diple.153600.E


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


Side effects:
   • Drops files
   • Registry modification

 Files It copies itself to the following location:
   • %SYSDIR%\Windefend.exe

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

  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Defender"="%SYSDIR%\Windefend.exe"

  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Defender"="%SYSDIR%\Windefend.exe"



The following registry key is added:

[HKCU\Software\Microsoft\Windows\CurrentVersion\App]
   • "new"="yes"

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

Server: **********n2.no-ip.info
Port: 1337
Nickname: %random character string%



 This malware has the ability to collect and send information such as:
    • Username
    • Information about the Windows operating system


 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 Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Andrei Ilie on Monday, October 31, 2011
Description updated by Andrei Ilie on Tuesday, November 1, 2011

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