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Virus:ADSPY/ClickSpri.1.B
Date discovered:16/01/2006
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:146.944 Bytes
MD5 checksum:5afb9b6f1acd7dc9d4b87cb16f16a704
VDF version:6.33.00.124

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Mcafee: Adware-ClickSpring.
   •  Kaspersky: Trojan-Downloader.Win32.PurityScan.au
   •  Bitdefender: Trojan.Downloader.Purityscan.AU


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


Side effects:
   • Drops malicious files
   • Registry modification

 Files The following files are created:

%TEMPDIR%\mshtml2.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: ADSPY/MediaTickets.R.1

%TEMPDIR%\mshtml3.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Dldr.PurityScan.AU.1

 Registry The following registry key is added:

– HKLM\SOFTWARE\Soas
   • "Taua"=%hex values%

 File details 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 Ionut Slaveanu on Wednesday, June 21, 2006
Description updated by Ionut Slaveanu on Tuesday, June 27, 2006

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