Beware of the infamous Crog virus that spreads over MSN Messenger.
If you have got that virus, delete it!
At least give us sources. 
Well, it seems to be an actual worm. But considering its age, and the fact that people now both have common sense and a functional antivirus, no need to warn us, really. I know that someone could retreive the worm if they know where to look and run it so that it can spread, but I don’t think someone would be intentionally spreading something labelled as a worm.
I do find it amusing that one of the files it copies itself as for P2P propogation is Messenger Plus! 3.50.exe, though. 
wOrm
How we can know if we have it or not? (well, with an antivirus) also, as @OhHelloThereImTheGuy said, the people now has common sense and an antivirus 
1 Like
Oh yeah it also drops a text file with this message inside:
Hey LARISSA f*** off, you f***ing n00b!.. Bla bla to your f***ing
Saving the world from Bropia, the world n33ds saving from you!
'-S-K-Y-'-D-E-V-I-L-'
Is this another Battle of the Hackers premiere or what? 
wat is that ?
The virus writer’s “letter” to another virus writer. Pretty common for them to stuff that inside a text file and open it up to the infected user for some odd reason.
In this case, the victim in question wrote a worm (E-mail) of his own that had functionality to terminate processes related to Bropia, yet another MSN Messenger worm, most likely written by the author of Crog/Fatso.
oh , this is … strange