需要修复电脑?
聘请专家
Virus:TR/PSW.OnLineGame.D
Date discovered:05/01/2009
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:104.448 Bytes
MD5 checksum:53a2f11667b6203ac7b6cccfa6b3df12
IVDF version:7.01.01.70 - Monday, January 5, 2009

 General Method of propagation:
    Autorun feature


Aliases:
   •  Sophos: Mal/Generic-A
   •  Panda: W32/Lineage.LHC
   •  Eset: Win32/PSW.OnLineGames.NNU
   •  Bitdefender: Trojan.PWS.OnlineGames.KDEC


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


Side effects:
   • Downloads a malicious file
   • Drops malicious files
   • Lowers security settings
   • Registry modification

 Files It copies itself to the following locations:
   • %drive%\ycmwc.exe
   • %TEMPDIR%\xvassdf.exe



It deletes the initially executed copy of itself.



The following files are created:

%drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%

%TEMPDIR%\4tddfwq0.dll Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Magania.crwe




It tries to download a file:

The location is the following:
   • http://www.yahoor7e.com/1rb/**********

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

  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "54dfsger"="C:\Temp\xvassdf.exe"



The following registry keys are changed:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"=dword:0x00000002
   • "ShowSuperHidden"=dword:0x00000000

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   New value:
   • "NoDriveTypeAutoRun"=dword:0x00000091

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\
   Folder\Hidden\SHOWALL]
   New value:
   • "CheckedValue"=dword:0x00000000

 Injection –  It injects the following file into a process: %TEMPDIR%\4tddfwq0.dll

    Process name:
   • explorer.exe



– It injects itself as a thread into a process.

    Process name:
   • iexplore.exe


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

说明添加者: Petre Galan 打开 2010年3月18日星期四
说明更新者: Petre Galan 打开 2010年3月23日星期二

反馈 . . . .
https:// 为了你的安全,此窗口已加密。