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October 17, 2005 5:01 PM PDT

Trojan masquerades as Skype update

  • 12 comments
Cybercriminals are spreading a malicious Trojan horse under the guise of an update to Skype, e-mail security firm MessageLabs said Monday.

The Trojan horse, a variant of IRCbot, arrives in an e-mail purporting to be an update to Skype, the popular Internet telephony application. Once opened the malicious software displays a phony installation error message. It then blocks access to security updates and installs a back door on computers, MessageLabs said in a statement.

The e-mail can have one of five different subject lines, which always refers to Skype. One, for example, reads: "Skype for Windows 1.4 - Have you got the new Skype?"

The e-mail body text advertises the Skype voice-over-IP application and urges the user to run the attached file to find out more, MessageLabs said.

The e-mail carrying the Trojan horse isn't widespread; MessageLabs has intercepted 150 copies since Sunday. It is the first such attack that pretends to be from Skype and users should watch out for such "social engineering," the company said.

Cybercriminals always try new things to dupe users into running malicious code. They have masked their Trojan horses as porn images, security updates, messages from system administrators, news photos and many other things.

See more CNET content tagged:
Skype, MessageLabs Ltd., trojan horse, malicious code, eBay Inc.

Add a Comment (Log in or register) (12 Comments)
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Same old trick...
by zaznet October 18, 2005 2:25 AM PDT
They've done this with Windows Update and dozens of other "updates".

Hopefully few people fall for this one.
Reply to this comment
Skype Trojan
by thannita October 18, 2005 4:54 AM PDT
Well, I for one fell for it.... Any suggestions of what I should do now?
View all 2 replies
same old tricks
by October 19, 2005 4:02 PM PDT
Yea, I've seen them before. I've also had a trojan add me to its friends list on MSN messanger, pretending to know me. I seen that, and just blocked him.. I forget the trojans name.
Same old trick...
by zaznet October 18, 2005 2:25 AM PDT
They've done this with Windows Update and dozens of other "updates".

Hopefully few people fall for this one.
Reply to this comment
Skype Trojan
by thannita October 18, 2005 4:54 AM PDT
Well, I for one fell for it.... Any suggestions of what I should do now?
View all 2 replies
same old tricks
by October 19, 2005 4:02 PM PDT
Yea, I've seen them before. I've also had a trojan add me to its friends list on MSN messanger, pretending to know me. I seen that, and just blocked him.. I forget the trojans name.
Attachment
by October 18, 2005 7:37 AM PDT
I stopped opening attachments a long time ago... Unless I've "arrange" with someone I "KNOW" to send me one.
Reply to this comment
Attachment
by October 18, 2005 7:37 AM PDT
I stopped opening attachments a long time ago... Unless I've "arrange" with someone I "KNOW" to send me one.
Reply to this comment
(12 Comments)
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