TR/PSW.Hangame.CM - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/PSW.Hangame.CM
Date discovered:	19/10/2006
Type:	Trojan
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Medium
Static file:	Yes
File size:	80.896 Bytes
MD5 checksum:	52d693b8696f803f255bfdc7047b8aed
VDF version:	6.36.00.137 - Thu, 19 Oct 2006 18:36 (GMT+1)
IVDF version:	6.36.00.154 - Tue, 24 Oct 2006 08:00 (GMT+1)

General Method of propagation:
   • No own spreading routine

Aliases:
   • Mcafee: PWS-Gamania
   • Kaspersky: Trojan-PSW.Win32.Hangame.cl
   • F-Secure: Trojan-PSW.Win32.Hangame.cl
   • Sophos: Troj/Lineag-E
   • VirusBuster: Trojan.PWS.Lineage.AJM
   • Eset: Win32/PSW.Lineage.AJP

Platforms / OS:
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Downloads a malicious file
   • Steals information

Files It copies itself to the following location:
   • %PROGRAM FILES%\Windows Media Player\svchost.exe

It deletes the initially executed copy of itself.

The following files are created:

– %TEMPDIR%\$$c2E.tmp.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.
– %SYSDIR%\PDLL.dll Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Hangame.CM

It tries to download some files:

– The location is the following:
   • http://www.gameanai.com/linegae/**********
It is saved on the local hard drive under: %WINDIR%\d1.dat

– The location is the following:
   • http://www.gameanai.com/linegae/**********
It is saved on the local hard drive under: %WINDIR%\d2_.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Crypt.NSAnti.Gen

Registry The following registry key is changed:

– HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
   Old value:
   • "Userinit"="%SYSDIR%\userinit.exe,"
   New value:
   • "Userinit"="%SYSDIR%\userinit.exe,%PROGRAM FILES%\Windows Media Player\svchost.exe,"

Backdoor Contact server:
The following:
   • http://huang13062236333.www111.cni**********

As a result it may send some information.

Sends information about:
    • Computer name
    • IP address
    • Collected information described in stealing section

Stealing It tries to steal the following information:

– A logging routine is started after a website is visited, which contains the following substring in its URL:
• http://tw.login.yahoo.com/cgi-bin/login.cgi?srv=

– It captures:
• Login information

Injection – It injects the following file into a process: %SYSDIR%\PDLL.dll

Process name:
• %all running processes%

File details Programming language:
The malware program was written in Delphi.

Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
• UPX

See a brief description here.

Description inserted by Teodor Onisor on Fri, 27 Oct 2006 17:34 (GMT+1)
Description updated by Teodor Onisor on Tue, 31 Oct 2006 09:55 (GMT+1)

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