Virus:TR/Proxy.Wopla.V
Date discovered:05/05/2006
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:20.992 Bytes
MD5 checksum:55586a44f39027562720c44ee235b024
VDF version:6.34.01.40
IVDF version:6.34.01.41 - Friday, May 5, 2006

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: Trojan.Tannick.B
   •  Kaspersky: Trojan-Proxy.Win32.Wopla.v
   •  TrendMicro: TROJ_WOPLA.V
   •  Sophos: Troj/Slogger-K
   •  VirusBuster: trojan Trojan.PR.Wopla.L
   •  Bitdefender: Trojan.Proxy.Wopla.E


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


Side effects:
   • Drops a malicious file
   • Registry modification

 Files It copies itself to the following location:
   • %SYSDIR%\%eight-digit random character string%.exe



The following files are created:

– A file that is for temporary use and it might be deleted afterwards:
   • %SYSDIR%\x.txt

– %SYSDIR%\%eight-digit random character string%.dll Further investigation pointed out that this file is malware, too. Detected as: TR/Proxy.Wopla.W

 Registry The following registry keys are added:

– HKLM\SOFTWARE\Classes\CLSID\{5368D5FC-6F6C-4f5b-B564-E67214F67552}\
   InProcServer32
   • "ThreadingModel"="Apartment"
   • @="%SYSDIR%\%eight-digit random character string%.dll"

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\
   ShellServiceObjectDelayLoad
   • "SysTray.Exbt"="{5368D5FC-6F6C-4f5b-B564-E67214F67552}"

 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 Ionut Slaveanu on Monday, July 31, 2006
Description updated by Ionut Slaveanu on Tuesday, August 1, 2006

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