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W32.Slegon

Posted: July 15, 2009

W32.Slegon (also referred to as W32/Slegon.Worm) is a worm that, once inside your computer, attempts to connect to a remote server and further harm your PC by downloading additional malware. W32.Slegon spreads by way of removable storage devices and mapped network drives. W32.Slegon can alter registry entries in order to begin running as soon as Windows starts up.

File System Modifications

  • The following files were created in the system:
    # File Name
    1 %DriveLetter%\autorun.exe
    2 %DriveLetter%\autorun.inf
    3 %System%\logon.exe

Registry Modifications

  • The following newly produced Registry Values are:
    HKEY..\..\..\..{RegistryKeys}HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\"" = "%CurrentFolder%\[ORIGINALLY EXECUTED FILE]:*:Enabled:RUNTIME_EXECUTABLE"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\..{RunKeys}HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"svchost" = "C:\WINDOWS\system32\logon.exe"
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