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Home » Hacking News » Phishing with MyTob worms

Phishing with MyTob worms

by Nikola Strahija on June 10th, 2005 The latest MyTob email worms have adopted fresh tactics in an attempt to trick victims.


Instead of appearing in emails with virus-contaminated attachments, newer versions of the worm include a faked web link pointing to malicious code, mimicking tricks more commonly used in phishing scams.

Emails sent by the new versions of the MyTob worm masquerade as a seemingly legitimate email from the organisation's IT department or ISP, and suggest to users that a security problem has been found with their email account. Users are advised to click on the web link to confirm their account. References are made to the recipient's domain name and email address to give the message a feel of authenticity.

Different variants of the MyTob worm currently account for 14 of the top 20 most commonly reported viruses to Sophos in the last seven days. Each only infects Windows PCs. The new versions of the MyTob worm contain a number of hidden messages. For instance, some claim the author's name is 'DiablO" and contain debug strings such as "[x] starting Hellbot::v3 beta 2'.

Standard defence precautions against viral attacks apply in defending against MyTob: corporates should consider blocking executables at the gateway and update anti-virus signature definition files to detect the virus. Home users should also update anti-virus tools and resist the temptation to open suspicious-looking emails.


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