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Virus:TR/Pincav.bjcw.1
Date discovered:20/07/2011
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Medium to high
Damage Potential:Low to medium
Static file:Yes
File size:131.072 Bytes
MD5 checksum:FB8C61760B9AA4DEE0453158F073F48F
VDF version:7.11.11.235 - Wednesday, July 20, 2011
IVDF version:7.11.11.235 - Wednesday, July 20, 2011

 General Method of propagation:
   • Autorun feature
   • Messenger


Aliases:
   •  Kaspersky: Trojan.Win32.Pincav.bjcw
   •  TrendMicro: WORM_DORKBOT.WI
   •  Sophos: W32/Autorun-BRX


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


Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following location:
   • %APPDATA%\%random character string%.exe



It deletes the initially executed copy of itself.

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

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "%random character string%"="%APPDATA%\%random character string%.exe"

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

– Windows Live Messenger

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

Server: **********e.yourwebfind.com
Port: 5101
Nickname: %random character string%

Server: **********e.mdmads.com
Port: 5101
Nickname: %random character string%

Server: **********e.beecitysearch.com
Port: 5101
Nickname: %random character string%

Server: **********e.babypin.net
Port: 5101
Nickname: %random character string%

Server: **********hox.com
Port: 5101
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
    • Start spreading routine

 Backdoor Contact server:
The following:
   • jebena.ana**********.su:6600 (UDP)


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

    Process name:
   • explorer.exe


 Miscellaneous Mutex:
It creates the following Mutex:
   • (EQ_+10

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


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 Wednesday, October 5, 2011
Description updated by Andrei Ilie on Friday, October 7, 2011

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