Virus:TR/Zlob.KJ
Date discovered:26/05/2008
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
Static file:No
File size:~15.000 Bytes
IVDF version:7.00.04.95 - Monday, May 26, 2008

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Mcafee: Puper trojan
   •  Kaspersky: Trojan.Win32.Small.azx
   •  F-Secure: Trojan.Win32.Small.azx
   •  Grisoft: Downloader.Zlob
   •  Eset: Win32/TrojanDownloader.Zlob.BYT trojan
   •  Bitdefender: Trojan.Downloader.Zlob.ABVY


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Drops a malicious file
   • Registry modification

 Files The following file is created:

– %malware execution directory%\scm.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Zlob.KJ

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

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\explorer\
   run]
   • "some"="%malware execution directory%\%executed file%"

 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 the following runtime packer:
   • UPX

Description inserted by Thomas Wegele on Wednesday, June 18, 2008
Description updated by Thomas Wegele on Wednesday, June 18, 2008

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