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Virus:WORM/Autorun.VW.117
Date discovered:20/07/2011
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
File size:26.624 Bytes
MD5 checksum:71A2BABAFD1C7D120EC784FDCE4E2DB0
VDF version:7.11.12.21 - Wednesday, July 20, 2011
IVDF version:7.11.12.21 - Wednesday, July 20, 2011

 General Method of propagation:
    Autorun feature


Aliases:
   •  Kaspersky: Trojan.Win32.Scar.dkpb
   •  TrendMicro: WORM_AUTORUN.DL
   •  Sophos: W32/Autorun-BRR
     Microsoft: Worm:Win32/Autorun.VW


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
    Windows Vista
    Windows 7


Side effects:
   • Third party control
   • Drops files
   • Registry modification

 Files It copies itself to the following locations:
   • %SYSDIR%\phqghu.exe
   • %drive%/usbrun.exe



The following file is created:

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

 Registry To each registry key one of the values is added in order to run the processes after reboot:

  [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\
   Run]
   • "phqghu.exe"="%SYSDIR%\phqghu.exe"

  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "phqghu.exe"="%SYSDIR%\phqghu.exe"
   •

  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\
   Run]
   • "phqghu.exe"="%SYSDIR%\phqghu.exe"

  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "phqghu.exe"="%SYSDIR%\phqghu.exe"

 Backdoor Contact server:
All of the following:
   • roguenet.**********:3545
   • xeyaskaz.**********:3545

Besides, it periodically repeats the connection.

Remote control capabilities:
     Download file
     Perform DDoS attack
     Visit a website

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

    Process name:
   • explorer.exe


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


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • UPX

说明添加者: Andrei Ilie 打开 2011年8月1日星期一
说明更新者: Andrei Ilie 打开 2011年8月2日星期二

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