Threat description


Platform: W32
Aliases: Trojan.Attack, Attack


This is a very small but dangerous DOS-based trojan program. When run it analyses the command line and if a valid drive and directory is found it deletes the specified directory and all its subdirectories. Files with all attributes are deleted in attacked folder.


Automatic action

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


More information on scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

If no command line is specified the trojan outputs a message: "Requires more memory to run"

If path specified in command line is not found the trojan outputs: "Out of memory error. Please reboot"

If a trojan fails to delete any file (for example shared Windows file) in attacked folder it outputs: "Could not attack " and a file name. After the first failure the trojan exits to system (and this saves the rest of data).

If the trojan is run with "C:\" command line it will wipe most of data on the disk in a few seconds.

Technical Details:Alexey Podrezov, F-Secure


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