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Published Sep 11, 2007 | Updated Sep 15, 2017

Worm:Win32/Pykspa.A

Detected by Microsoft Defender Antivirus

Aliases: Win32/Pykbub.C (CA) Worm.Win32.Skipi.b (Kaspersky) W32/Pykse.worm.b (McAfee) W32/Pykspa.D (Norman) Mal/Behav-103 (Sophos) Worm.Win32.Skipi.b (Sunbelt Software) W32.Pykspa.D (Symantec) WORM_SKIPI.A (Trend Micro)

Summary

Worm:Win32/Pykspa.A is a worm that sends instant-messages on behalf of a user logged into Skype, an Internet chat client application. Messages sent contain a link to a remote Web site hosting a copy of the worm. Worm:Win32/Pykspa.A terminates processes, and redirects Web browser connections for various security-related Web sites to random IP addresses.

Use up-to-date antivirus software

Most antivirus software can detect and prevent infection by known malicious software. To help protect you from infection, you should always run antivirus software that is updated with the latest signature files. Antivirus software is available from several sources. For more information, see http://www.microsoft.com/athome/security/downloads/default.mspx.

Take steps to prevent re-infection

You should not reconnect your computer to the Internet until the computer is protected from re-infection. See the "Preventing Infection" section for more information.
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