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Win32.HLLW.MyBot.3165

Added to the Dr.Web virus database: 2011-09-15

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MSN' = 'msnmsg.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunServices] 'MSN' = 'msnmsg.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'MSN' = 'msnmsg.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices] 'MSN' = 'msnmsg.exe'
Malicious functions:
Creates and executes the following:
  • <SYSTEM32>\msnmsg.exe 300 "<Full path to virus>"
Terminates or attempts to terminate
the following user processes:
  • mpftray.exe
  • NAVAPW32.EXE
  • MCAGENT.EXE
  • fsav32.exe
  • GUARD.EXE
  • zapro.exe
  • ZONEALARM.EXE
  • smc.exe
  • nod32.exe
  • outpost.exe
  • AVP32.EXE
  • AVPCC.EXE
  • AVP.EXE
  • AVGCC32.EXE
  • AVGCTRL.EXE
  • Drwebupw.exe
  • fsav.exe
  • ccapp.exe
  • AVPM.EXE
  • AVSYNMGR.EXE
Modifies file system :
Creates the following files:
  • <SYSTEM32>\msnmsg.exe
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\msnmsg.exe
Deletes itself.
Network activity:
Connects to:
  • 'xx#####xxxx.localdomain':6667
  • '25#.#55.255.255':6667
  • '<Private IP address>':445
  • '<Private IP address>':44445
UDP:
  • DNS ASK xx#####xxxx.localdomain
Miscellaneous:
Searches for the following windows:
  • ClassName: 'mIRC' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''
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