Threat Encyclopedia


Malware type: File Infector

Aliases: Net-Worm.Linux.Lion (Kaspersky), Linux/Lion.worm (McAfee), Linux.Lion.Worm (Symantec), UNIX/Rebus (Avira), Troj/T0rn-Kit (Sophos), Worm:Linux/Lion (Microsoft)

In the wild: No

Destructive: No

Language: English

Platform: Unix

Encrypted: No

Overall risk rating:

Reported infections:

Damage potential:


Distribution potential:


This Unix script is a component of the worm UNIX_LION.A. It is used to hide the activities of the worm.

For additional information about this threat, see:

Description created: Aug. 15, 2001 1:44:16 PM GMT -0800
Description updated: Oct. 16, 2001 2:47:37 AM GMT -0800


Size of malware: 1,345 Bytes

Initial samples received on: Aug 6, 2001

Payload 1: Displays Message

Upon execution, this Unix script displays the following messages:

�sauber by socked [07.27.92]�

�Cleaning logs.. This may take a bit depending on the size of the logs.�

It then searches for log files in the /var/log folder and then deletes the lines that correspond to the activities of the UNIX_LION.A worm. Thereafter, it displays a message that indicates the number of lines removed for every log file.

After deleting the necessary lines, it displays the following message:

�Alles sauber mein Meister!�


Minimum scan engine version needed: 8.000

Pattern file needed: 0.926.00

Pattern release date: Aug 14, 2001

Important note: The "Minimum scan engine" refers to the earliest Trend Micro scan engine version guaranteed to detect this threat. However, Trend Micro strongly recommends that you update to the latest version in order to get comprehensive protection. Download the latest scan engine here.


Running Trend Micro Antivirus

If you are currently running in safe mode, please restart your computer normally before performing the following solution.

Scan your computer with Trend Micro antivirus and delete files detected as UNIX_LION.A-2. To do this, Trend Micro customers must download the latest virus pattern file and scan their computer. Other Internet users can use HouseCall, the Trend Micro online virus scanner.

Trend Micro offers best-of-breed antivirus and content-security solutions for your corporate network, small and medium business, mobile device or home PC.

Featured Stories

Connect with us on