Lately we have been finding some malwares wherein a fast spreading WORM like REATLE is carrying a VIRUS in its body.
I dont know if this is something old or new, but all I can think of is that this technique of WORM with a VIRUS maybe used by some malware authors to increase the infection rate of their viruses. Please see below
- A WORM is created by malware author
- Malware Author infects the WORM with a VIRUS
- WORM is spread carrying with it the VIRUS
- Upon execution of the WORM, the VIRUS also infects other files in the system.
This way the VIRUS carried by the WORM can infect more files while getting a free ride accross the networks via its WORM where it can again infect other files.