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Virus:JS/Dldr.Agent.afr
Date discovered:17/12/2008
Type:Trojan
Subtype:Downloader
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:No
File size:~ 1.192 Bytes
IVDF version:7.01.00.249 - Wednesday, December 17, 2008

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan-Downloader.JS.Agent.dcz
   •  F-Secure: Trojan-Downloader.JS.Agent.dcz
   •  Grisoft: JS/Pakes


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


Side effects:
   • Downloads a malicious file
   • Makes use of software vulnerability

 Files It tries to download some files:

The location is the following:
   • http://down.erhaha2.cn/**********/a1.css
It is saved on the local hard drive under: c:/Program Files/Outlook Express/wab.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Crypt.XDR.Gen


The location is the following:
   • http://down.erhaha2.cn/**********/a1.css
It is saved on the local hard drive under: d:/Program Files/Outlook Express/wab.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Crypt.XDR.Gen


The location is the following:
   • http://down.erhaha2.cn/**********/a1.css
It is saved on the local hard drive under: e:/Program Files/Outlook Express/wab.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Crypt.XDR.Gen

Description inserted by Thomas Wegele on Friday, December 19, 2008
Description updated by Thomas Wegele on Friday, December 19, 2008

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