This is a simple BAT trojan that deletes all files on C:, A:, B: and D: drives. The trojan uses 'DELTREE /Y' DOS command to delete the files. The trojan then tries to delete SIMPSONS.* files, but there are no more files on affected drives after the DELTREE command.
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.
The trojan is distributed as a self-extracting WinZip package that displays standard WinZip message after being run and then extracts the trojan and spawns it.
This trojan was reported to be in the wild in late June, 2000. However, it does not seem to be significantly widespread (as it does not replicate further by itself).
[Eugene Kaspersky, KL]