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W32.Gosys

Risk Level 2: Low

Discovered:
November 11, 2009
Updated:
July 1, 2013 7:52:54 AM
Also Known As:
W32/Semblant-A [Sophos], Swisyn.v [McAfee], Troj/VBLuiha-A [Sophos]
Type:
Worm
Infection Length:
192,533 bytes
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP
W32.Gosys is a worm that spreads through network shares and removable drives. It also opens a back door on the compromised computer.

Antivirus Protection Dates

  • Initial Rapid Release version November 11, 2009 revision 008
  • Latest Rapid Release version June 6, 2014 revision 001
  • Initial Daily Certified version November 11, 2009 revision 022
  • Latest Daily Certified version June 6, 2014 revision 018
  • Initial Weekly Certified release date November 11, 2009
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy

Damage

  • Damage Level: Medium
  • Payload: Opens a back door on the computer.

Distribution

  • Distribution Level: Medium
  • Shared Drives: Spreads through network shares.
  • Target of Infection: Spreads through removable drives.
Writeup By: Stephen Doherty

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