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Virus:TR/Meredrop.A.6817
Date discovered:29/03/2010
Type:Trojan
Subtype:Dropper
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:229.888 Bytes
MD5 checksum:b82fe8cf56b26e2ab356c0731ad1290b
IVDF version:7.10.05.248 - Monday, March 29, 2010

 General Method of propagation:
   • Autorun feature


Aliases:
   •  Panda: W32/Autorun.JYG
   •  Eset: Win32/AutoRun.Agent.VO
   •  Bitdefender: Win32.Worm.Palevo.AN


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


Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following location:
   • %drive%\RECYCLER\S-11-7-07-1107-042981-1107\autorun.exe



The following files are created:

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

– %HOME%\Application Data\driveraudio.exe

 Registry The following registry key is added in order to run the process after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "DriverAudio"=""%HOME%\Application Data\driveraudio.exe""



The following registry key is added:

– [HKCU\SOFTWARE\kk]
   • "NI"="OK"

 Backdoor The following port is opened:

– dns.pho**********.net on TCP port 1024

 Injection – It injects itself as a remote thread into a process.

    Process name:
   • explorer.exe


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

Descrição enviada por Petre Galan em quarta-feira, 7 de julho de 2010
Descrição atualizada por Petre Galan em quarta-feira, 7 de julho de 2010

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