We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
Win32/Kelvir
Detected by Microsoft Defender Antivirus
Aliases: W32/Kelvir.worm.gen (McAfee) W32/Kelvir-Gen (Sophos)
Summary
Windows Defender Antivirus detects and removes this threat.
Win32/Kelvir is a family of worms that target PCs running certain versions of Microsoft Windows.
The worm spreads through MSN Messenger or Windows Messenger. The worm is activated when a user clicks a link in a Messenger message.
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