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Virus:TR/Scar.cfmv
Date discovered:30/05/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:575.488 Bytes
MD5 checksum:65feb504a274110a513dce6d1b6a640d
IVDF version:7.10.07.196 - Sunday, May 30, 2010

 General Method of propagation:
   • Autorun feature


Aliases:
   •  Bitdefender: Trojan.Generic.4010642
   •  Panda: Trj/Thed.V


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads malicious files
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following locations:
   • %drive%\%executed file%
   • %ALLUSERSPROFILE%\Application Data\srtserv\%executed file%



The following files are created:

%drive%\aUtoRuN.iNF This is a non malicious text file with the following content:
   • %code that runs malware%

– %ALLUSERSPROFILE%\Application Data\srtserv\sdata.dll Further investigation pointed out that this file is malware, too. Detected as: Worm/Autorun.hdf

– %ALLUSERSPROFILE%\Application Data\srtserv\set.dat



It tries to download some files:

– The locations are the following:
   • http://psynergi.dk/data/**********
   • http://kubusse.ru/data/**********
   • http://s-elisa.ru/data/**********
   • http://eda.ru/data/**********


– The locations are the following:
   • http://vesterm.freehostia.com/**********
   • http://6cb498fe.freehostia.com/**********
   • http://c7e1c722.110mb.com/**********
   • http://ef1b7dc6.x10hosting.com/**********




It tries to execute the following file:

– Filename:
   • "%ALLUSERSPROFILE%\Application Data\srtserv\%executed file%" -wait

 Registry The values of the following registry keys are removed:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • srtserv

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • srtserv



The following registry key is added:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\MSrtn]
   • "value1"="%executed file%"
   • "value2"=dword:0x000007d4

 Miscellaneous Accesses internet resources:
   • http://vesterm.freehostia.com
   • http://psynergi.dk/data
   • http://kubusse.ru/data
   • http://s-elisa.ru/data
   • http://eda.ru/data
   • http://psynergi.dk/data
   • http://pushnik.freehostia.com


Mutex:
It creates the following Mutexes:
   • YCS0mRtQ316
   • KAENA_HOOK

 File details Programming language:
The malware program was written in Delphi.


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

说明添加者: Petre Galan 打开 2010年11月19日星期五
说明更新者: Petre Galan 打开 2010年11月19日星期五

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