W32/Mytob
Monday 11th July, 2005 00:49 Comments: 0
Probably the worst virus in 2005, this has many variants. Mytob is one of the most advanced worms seen so far, and virus writers can easily modify the source code to develop new variants. The Netsky variants have finally been knocked off the top spot, Mybot now makes up something like 42% of reported viruses. This family was introduced during March 2005, and there's roughly one new copy per day.
It is stealth-like and can hide on an infected PC while lowering security settings. It typically appears as an official message from an email administrator (which can be blocked with proper email rules). Some Mytob variants can exploit unpatched Microsoft security vulnerabilities (although sensible people will be patched).
In short, it's evil. Keep your software up to date and cross your fingers, hopefully this one will die down soon - when users finally learn not to open everything that's sent to them!
It is stealth-like and can hide on an infected PC while lowering security settings. It typically appears as an official message from an email administrator (which can be blocked with proper email rules). Some Mytob variants can exploit unpatched Microsoft security vulnerabilities (although sensible people will be patched).
In short, it's evil. Keep your software up to date and cross your fingers, hopefully this one will die down soon - when users finally learn not to open everything that's sent to them!