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W32.Chir.B@mm

Risk Level 2: Low

Discovered:
July 29, 2002
Updated:
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 98, Windows 95, Windows XP, Windows Me, Windows NT, Windows 2000
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 December 25, 2014 revision 034
  • Initial Daily Certified version July 30, 2002
  • Latest Daily Certified version December 27, 2014 revision 003
  • Initial Weekly Certified release date July 31, 2002
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: Low
  • Payload: Exploits remote vulnerabilities.
  • Modifies Files: Infects specific files.
  • Degrades Performance: Mass-mailing emails may degrade performance.

Distribution

  • Distribution Level: Medium
  • Subject of Email: [USER NAME] is coming !
  • Name of Attachment: PP.exe
Writeup By: Yana Liu

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