Trojan:Win32/Sirefef
Microsoft security software detects and removes this threat.
This threat is a member of the Win32/Sefnit family. This family can hide on your PC and do different things, including:
- Downloading and running other files
- Contacting remote hosts
- Disabling security features
They can also change your search results, which can generate money for malicious hackers.
Variants of Win32/Sirefef might be installed by other malware, including variants of the Trojan:Win32/Necurs family.
Trojan:Win32/Sirefef.A
Trojan:Win32/Sirefef.A 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.
Trojan:Win32/Sirefef.M
Trojan:Win32/Sirefef.M 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.
Trojan:Win32/Sirefef.C
Trojan:Win32/Sirefef.C is the detection for a component of the Win32/Sirefef family- 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.
Trojan:Win32/Sirefef.J
Trojan:Win32/Sirefef.J 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.
Trojan:Win32/Sirefef.K
Trojan:Win32/Sirefef.K 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.
Trojan:Win32/Sirefef.O
Trojan:Win32/Sirefef.O is a trojan component of the Win32/Sirefef family, and is installed by variants of TrojanDropper:Win32/Sirefef. The trojan provides functionality for other installed Win32/Sirefef rootkit components.
Trojan:Win32/Sirefef.N
Trojan:Win32/Sirefef.N 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.
Trojan:Win32/Sirefef.P
Microsoft security software detects and removes this threat.
This family of malware uses stealth to hide itself. Trojans in this family can do different things, including:
- Downloading and running other files
- Contacting remote hosts
- Disabling security features
Members of the family can also change search results, which can generate money for the attackers who use Sirefef.
Variants of Win32/Sirefef may be installed by other malware, including variants of the Trojan:Win32/Necurs family.
See the Win32/Sirefef family description for more information.
Trojan:Win32/Sirefef.Q
Trojan:Win32/Sirefef.Q 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.
Trojan:Win32/Sirefef.I
Trojan:Win32/Sirefef.I 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.
Trojan:Win32/Sirefef.S
Trojan:Win32/Sirefef.S 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.