Published Jan 07, 2009|Updated Sep 15, 2017


Severe |Detected with Windows Defender Antivirus

Aliases: TA08-297A (other) CVE-2008-4250 (other) VU827267 (other) Win32/Conficker.A (CA) Mal/Conficker-A (Sophos) Trojan.Win32.Agent.bccs (Kaspersky) W32.Downadup.B (Symantec) Trojan-Downloader.Win32.Agent.aqfw (Kaspersky) W32/Conficker.worm (McAfee) Trojan:Win32/Conficker!corrupt (Microsoft) W32.Downadup (Symantec) WORM_DOWNAD (Trend Micro) Confickr (other)


Microsoft security software detects and removes this threat.

This family of worms can disable several important Windows services and security products. They can also download files and run malicious code on your PC if you have file sharing enabled.

Conficker worms infect PCs across a network by exploiting a vulnerability in a Windows system file. This vulnerability is described and fixed in Security Bulletin MS08-067.

Some worms can also spread via removable drives and by using common passwords.

Find out ways that malware can get on your PC.


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