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W32.Cycle

Risk Level 2: Low

Discovered:
May 10, 2004
Updated:
February 13, 2007 12:22:50 PM
Also Known As:
Win32.Cycle.A [Computer Associ, WORM_CYCLE.A [Trend], W32/Cycle.worm.a [McAfee]
Type:
Worm
Systems Affected:
Windows 2000, Windows XP

W32.Cycle is a worm that attempts to exploit the Microsoft Windows LSASS Buffer Overrun Vulnerability (described in Microsoft Security Bulletin MS04-011).

Antivirus Protection Dates

  • Initial Rapid Release version May 10, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version May 10, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date May 12, 2004
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: Moderate

Damage

  • Damage Level: Medium

Distribution

  • Distribution Level: Medium
Writeup By: Fergal Ladley

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