Published Jun 22, 2012|Updated Sep 15, 2017

Trojan:Win32/Sirefef.AN

Severe |Detected with Windows Defender Antivirus

Aliases: Backdoor.Win32.ZAccess.tyi (Kaspersky) Mal/ZAccess-CA (Sophos) TR/ATRAPS.Gen2 (Avira) TROJ_SIREFEF.CZ (Trend Micro) Trojan.Win32.Alureon (Ikarus) ZeroAccess (McAfee)

Summary

Microsoft security software detects and removes this threat.

This threat is a member of the Win32/Sirefef family. Trojans in this family can do different things, including:

  • Changing your search results
  • Downloading and running other files
  • Contacting remote hosts
  • Disabling security features

Sirefef variants can be installed by other malware, including members of the Trojan:Win32/Necurs family.

 

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