We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
Worm:Win32/Mytob
Detected by Microsoft Defender Antivirus
Aliases: Win32/Atak (CA) Mytob (F-secure) Win32/Mytob (McAfee) W32.Mytob (Symantec) WORM_MYTOB (Trend Micro)
Summary
Win32/Mytob is a family of mass-mailing worms that targets computers running certain versions of Microsoft Windows. The worm can spread by exploiting Windows vulnerabilities that are fixed by installing Microsoft Security Updates MS03-026 and MS04-011. The worm can also spread by sending a copy of itself through e-mail, MSN Messenger, or Windows Messenger.
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