Threat Description

Cheese

Details

Aliases:Cheese
Category:Malware
Type:Worm
Platform:W32

Summary



Cheese is a worm that is able to propagate from a Linux based system to another. It scans random Class B subnetworks for machines that are infected with a Lion worm, and if such systems are found, it copies itself to the victim to to directory "/tmp/.cheese".



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details



When the worm executes, it removes all lines that contain string "/bin/sh" from the "/etc/inetd.conf" and restarts inetd service. This effectively removes an open shell installed by Lion worm.

After that Cheese will start to scan for other machines to infect.





Technical Details: Sami Rautiainen, F-Secure; May 2001


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