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Alert level: Severe Detected with Windows Defender Antivirus
Also detected as: BackDoor.Maxplus.23 (Dr.Web) ZeroAccess.b (McAfee) Zero Access rootkit (other) Max++ (other) ZAccess (other)
Trojan:Win64/Sirefef.B is a trojan that connects to a remote server to download arbitrary files which can include malware, such as other components of Sirefef, and may be present on an affected computer as a file named "consrv.dll".
Trojan:Win64/Sirefef.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.