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Alert level: Severe Detected with Windows Defender Antivirus
Also detected as: 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)
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.
Some worms can also spread via removable drives and by using common passwords.