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Virus:TR/Dldr.Unruy.H.12
Date discovered:05/10/2011
Type:Trojan
Subtype:Downloader
In the wild:No
Reported Infections:Medium
Distribution Potential:Low
Damage Potential:Low to medium
Static file:No
VDF version:7.11.15.131 - Wednesday, October 5, 2011
IVDF version:7.11.15.131 - Wednesday, October 5, 2011

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan-Clicker.Win32.Cycler.alha
   •  Sophos: Troj/VB-FOQ
   •  Bitdefender: Gen:Variant.Graftor.1321
   •  Eset: Win32/Injector.JSB
   •  DrWeb: Trojan.MulDrop3.5436


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows Server 2008
   • Windows 7


Side effects:
   • Downloads a file

 Files It overwrites the following files.
%WINDIR%\ime\imjp8_1\IMJPMIG.EXE

With the following contents:
   • Itself

%PROGRAM FILES%\Java\jre6\bin\jusched.exe

With the following contents:
   • Itself




The following file is created:

%WINDIR%\ime\imjp8_1\IMJPMIG.EXE.b This is a non malicious text file with the following content:
   • 1

%PROGRAM FILES%\Java\jre6\bin\jusched.exe.b This is a non malicious text file with the following content:
   • 1

%SYSDIR%\UkXB8.com.b This is a non malicious text file with the following content:
   • 1

%SYSDIR%\UkXB8.com Further investigation pointed out that this file is malware, too. Detected as: TR/Dldr.Unruy.H.12

 Injection – It injects itself into a process.

    Process name:
   • winlogon.exe


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

Description inserted by Chiaho Heng on Friday, October 7, 2011
Description updated by Chiaho Heng on Friday, October 7, 2011

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