Microsoft Instant Messenger Virus Sweeps Net

Many people have reported a Warhol virus affecting users of Microsoft Instant Messenger. If you get messaged, "Go To http://www.masenko-media.net/cool.html NoW !!!", or any similar message (apparently there are several websites with the infection code), I suggest not following the link. A brief discussion follows.

Sequence: Get messaged "Go To http://www.masenko-media.net/cool.html NoW !!!" or something similar with another URL. Follow the link. That webpage contains malicious code which gets your messenger contacts and sends a similar message to your contacts. It looks like it uses a vulnerability in formmail.pl as well, although I'm not exactly sure how (I'm not an expert in ECMAscript, sorry, and I have no systems that could possibly be affected by this to test with). I'm sure some of our readers can provide more information in the comments below.

There appear to be several webpages which carried the infected code, not just masenko-media.net. Some webmasters are already taking them down.

Sophistication: moderate. Damage: only your pride.

Solution: probably the latest mega-patch for Internet Explorer will fix the Microsoft bug that allowed this.

Risks: obviously, the code could have done worse than just messaging your contacts. With Microsoft making "messaging" an integrated part of the operating system, any flaws in it can be exploited to affect millions of people instantly, so it is a high-value target. Does it have commensurate high-strength security?

Comments

Other clients?

[Geeyzus]

I assume this only affects the MSN client from Microsoft... correct? Or does this also affect other clients that can use the MSN network, like Trillian? If it is just a link to some virus code on a website, it would affect Trillian (because it actually doesn't propagate through the instant messaging program)... but if it is something that gets triggered inside MSN Instant Messenger, then Trillian users are safe...

Mark

Re:Not a Messenger flaw

[RWarrior(fobw)]

"Install the patch and be done with it."

Is that why I keep getting probed with NIMDA? Because people just install the patch and are done with it?

Re:One shoe drops

[rjamestaylor]

• Don't believe me? check out the IIS curve at Netcraft [netcraft.com] . What happened after Nimda and Code Red? IIS usage INCREASED.

IT purchasing decisions are made by people who are insulated from these problems but not from IT advertising. Ergo, this kind of problem has little to no effect on the IT market.