Windows Defender detects and removes this threat.

This trojan is part of the Win32/Sefnit family. These trojans can allow a hacker to access your PC, download files, spread through the eMule peer-to-peer file sharing network, and use your PC and Internet connection to do clickfraud.

This particular variant is used by the family to install and update itself on your PC.

Microsoft security software detects and removes this family of threats.

This family of threats can allow backdoor access, download files, and use your PC and Internet connection for click fraud and bitcoin and Litecoin mining.

Some Sefnit versions can monitor Internet Explorer or Mozilla Firefox to hijack search results when you use search engines such as Bing, Yahoo!, and Google.

They can be downloaded by other malware, or bundled with other software and downloaded through peer-to-peer file sharing networks.

Find out ways that malware can get on your PC.

Trojan:Win32/Sefnit.AJ is a trojan that may monitor Internet Explorer or Mozilla Firefox to hijack the search results for various search engines.

Windows Defender Antivirus detects and removes this threat.

This threat belongs to the Win32/Sefnit family of trojans, which can allow backdoor access, download files, and use your PC and Internet connection for  click fraud.

See the Win32/Sefnit family description for more informaiton.

Windows Defender detects and removes this threat.

This threat is a part of the Win32/Sefnit family of trojans that can give a malicious hacker access to your PC. They can also download files onto your PC and use your Internet connection for click fraud.

This variant spreads itself on the eMule peer-to-peer network and can download other malware.

If you have this detected on your PC, then it's likely you're infected with other parts of the Win32/Sefnit family.

Windows Defender detects and removes this threat.

This threat can perform a number of actions of a malicious hacker's choice on your PC.

See the Win32/Sefnit family description for more information.

Trojan:Win32/Sefnit.AA is a trojan that may monitor Internet Explorer or Mozilla Firefox to hijack the search results for various search engines.

Trojan:Win32/Sefnit.AC is a trojan that may monitor Internet Explorer and Mozilla Firefox to hijack search results from certain engines.

Windows Defender detects and removes this threat.

It uses your PC to do click fraud. It does this in the background, so you may not notice anything unusual.

If this threat is detected on your PC, it's likely you're infected with other malware from the Win32/Sefnit family. This malware family can give a malicious hacker access to your PC to download files and other malware.

This threat can be downloaded onto your PC by other malware, or it might have been bundled together with other software. Other variants of Win32/Sefnit are also downloaded through peer-to-peer sharing networks.