Published Oct 22, 2012|Updated Sep 15, 2017

Virus:Win32/Sirefef.gen!B

Alert level: Severe Detected with Windows Defender Antivirus

Also detected as: No associated aliases

Virus:Win32/Sirefef.gen!B is a component of Win32/Sirefef - a multi-component family of malware that moderates your Internet experience by changing search results and generating pay-per-click advertising revenue for its controllers. The family consists of multiple parts that perform different functions, such as downloading updates and additional components, hiding existing components, or performing a payload.

 

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