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Category: Malware

Type: Virus

Aliases: Worm.Win32.Zusha.b, TrojanDownloader.Win32.Agent.co, Trojan.Win32.Small.aq, Worm.Win32.Zusha.a


Zusha worm (both A and B variants) were found on September 8th, 2004. Zusha is a network worm that spreads using LSASS (MS04-011) exploit. It also downloads and runs additional files from the Internet. These files are downloaders, they can also kill firewall application processes in memory and modify Windows firewall configuration to bypass the built-in firewall. In addition, a backdoor component is dropped and activated on the infected systems.


Automatic action

Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.

Knowledge Base

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About the product

See the manual for your F-Secure product on the Help Center.

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Submit a sample

Submit a file or URL for further analysis.

Description Created: 2006-01-01 09:01:38.0

Description Last Modified: 2006-01-01 00:00:00.0