Virus:TR/Sorri.O.17
Date discovered:08/08/2008
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:1.819.648 Bytes
MD5 checksum:1f798372fba71219035eed5d6a9ff2ff
IVDF version:7.00.05.233 - Friday, August 8, 2008

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Mcafee: BackDoor-CKB.gen trojan
   •  Kaspersky: Trojan-Dropper.Win32.Agent.vhc
   •  F-Secure: Trojan-Dropper:W32/Agent.FAX
   •  Panda: Bck/PcClient.HV
   •  Bitdefender: Trojan.Sorri.O


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


Side effects:
   • Drops a file
   • Drops a malicious file


Right after execution it runs a windows application which will display the following window:


 Files The following files are created:

– %SYSDIR%\2008beijingolympics.pps Furthermore it gets executed after it was fully created.
– %SYSDIR%\wuauct.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: DR/Pcclient.Gen

 File details Programming language:
 The malware program was written in MS Visual C++.

Description inserted by Thomas Wegele on Monday, August 11, 2008
Description updated by Thomas Wegele on Tuesday, August 12, 2008

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