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Microsoft Security Intelligence
1 entries found.
Updated on Oct 04, 2012

Trojan:Win64/Sirefef.AG is a component of Win64/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.

Alert level: severe