Virus:TR/Dldr.Agent.dxcpn
Date discovered:09/08/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:36.864 Bytes
MD5 checksum:49e1d3e6ae4dd016829ba86fbf9bef07
IVDF version:7.10.10.126 - Monday, August 9, 2010

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: Trojan.Sasfis
   •  Mcafee: Artemis!49E1D3E6AE4D
   •  Microsoft: Trojan:Win32/Meredrop
   •  PCTools: Trojan.Sasfis
   •  AhnLab: Dropper/Win32.Malware
   •  DrWeb: Trojan.MulDrop1.40399


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


Side effects:
   • Downloads a file
   • Downloads malicious files

 Files It deletes the initially executed copy of itself.



The following file is created:

– %TEMPDIR%\2771.bat Furthermore it gets executed after it was fully created. This is a non malicious text file that contains information about the program itself.



It tries to download some files:

– The location is the following:
   • http://pt**********=51
It is saved on the local hard drive under: %TEMPDIR%\1.tmp Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Agent.20480.AB


– The location is the following:
   • http://r**********ml
It is saved on the local hard drive under: %TEMPDIR%\2.tmp Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Crypt.XPACK.Gen

 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Carlos Valero Llabata on Wednesday, August 11, 2010
Description updated by Carlos Valero Llabata on Wednesday, August 11, 2010

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