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  3. W32.Chir.B@mm


Risk Level 2: Low

July 29, 2002
July 30, 2002 7:47:41 PM
Also Known As:
Win32.Chir.B [Computer Associates], W32/Chir-B [Sophos], Runouce [F-Secure], PE_CHIR.B [Trend]
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
W32.Chir.B@mm is a mass-mailing worm and virus that sends itself to email addresses gathered from the compromised computer. It exploits remote vulnerabilities and attempts to infect files.

Antivirus Protection Dates

  • Initial Rapid Release version July 30, 2002
  • Latest Rapid Release version May 21, 2015 revision 037
  • Initial Daily Certified version July 30, 2002
  • Latest Daily Certified version May 21, 2015 revision 039
  • Initial Weekly Certified release date July 31, 2002
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Yana Liu

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