Virus:TR/Drop.Agent.AA.4
Date discovered:06/08/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:25.088 Bytes
MD5 checksum:e57d938e0754e4fbb3b87cf818a0fc69
IVDF version:7.10.10.101 - Friday, August 6, 2010

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: Downloader.Harnig
   •  Kaspersky: Packed.Win32.Krap.ao
   •  Sophos: Troj/Dloadr-DBU
   •  Avast: Win32:Crypt-HFP
   •  Microsoft: TrojanDownloader:Win32/Bubnix.A
   •  Panda: Trj/CI.A
   •  PCTools: Downloader.Harnig
   •  VirusBuster: Trojan.DL.Bubnix.FX
   •  Eset: Win32/Kryptik.FWJ
   •  AhnLab: Win-Trojan/Bredolab.55808
   •  DrWeb: Trojan.DownLoader1.16230
   •  Ikarus: Packed.Win32.Krap
   •  Norman: Smalltroj.ZISO


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


Side effects:
   • Drops a malicious file

 Files It copies itself to the following location:
   • %TEMPDIR%\%random character string%.tmp



It deletes the initially executed copy of itself.




It tries to download a file:

– The location is the following:
   • http://204.45.118.250/exc1
It is saved on the local hard drive under: %SYSDIR%\drivers\aec.sys Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Agent.783872.3

Description inserted by Carlos Valero Llabata on Wednesday, August 25, 2010
Description updated by Carlos Valero Llabata on Wednesday, August 25, 2010

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