TR/Zlob.65745.3 - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/Zlob.65745.3
Date discovered:	20/10/2006
Type:	Trojan
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	Yes
File size:	53.702 Bytes
MD5 checksum:	9febab34c767c0256e224b57054ef915
VDF version:	6.36.00.128
IVDF version:	6.36.00.145 - Fri, 20 Oct 2006 16:50 (GMT+1)

General Method of propagation:
   • No own spreading routine

Aliases:
   • Kaspersky: Trojan-Downloader.Win32.Zlob.api
   • Eset: Win32/TrojanDownloader.Zlob

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
   • Lowers security settings
   • Registry modification

Right after execution the following information is displayed:

Files It creates the following directory:
• %PROGRAM FILES%\MMediaCodec

The following file is created:

– %PROGRAM FILES%\MMediaCodec\uninst.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Drop.Zlob.acr

Registry The value of the following registry key is removed:

– [HKCU\Software\Internet Security]
   • "65010"=-

The following registry keys are added:

– [HKCU\Software\Internet Security]
   • "Removable"=dword:00000000
   • "Path"="%PROGRAM FILES%\MMediaCodec"
   • "Type"=dword:00000003

– [HKCR\VSEnchancer.Chl\CLSID]
   • "(Default)"="{6BF52A52-394A-11D3-B153-00C04F79FAA6}"

– [HKCR\AVZipEnchancer.Chl\CLSID]
   • "(Default)"="{6BF52A52-394A-11D3-B153-00C04F79FAA6}"

– [HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\
   MMediaCodec]
   • "Publisher"="MMediaCodec Software"
   • "URLInfoAbout"="www.mmcodec.com"
   • "DisplayVersion"="9.0"
   • "DisplayIcon"="%PROGRAM FILES%\MMediaCodec\uninst.exe"
   • "UninstallString"="%PROGRAM FILES%\MMediaCodec\uninst.exe"
   • "DisplayName"="MMediaCodec 9.0"
   • "ProductionEnvironment"="1"

File details 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 Monica Ghitun on Fri, 20 Oct 2006 11:28 (GMT+1)
Description updated by Monica Ghitun on Fri, 20 Oct 2006 11:59 (GMT+1)

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