This is an IRC virus-worm that spreads itself via mIRC channels. It appears as a MILBUG_A.EXE or MILBUG_B.EXE DOS EXE file about 10Kb in length. The file name depends on the worm version. When the worm file is executed, it overwrites the SCRIPT.INI file in the C:MIRC directory with its own script program that has just two instructions. The first one sends the following message to any new user in the channel:
I'm testing my millenium bug fix program. Receive it and test it
The second one sends the MILBUG EXE file to this user.
The worm does not have any dangerous payload and does not manifest itself in any other way.
