Rugrat contains the plaintext shrug – roy g biv and was written, Symantec said, by the person responsible for six other proof-of-concept viruses. Roy G Biv, perhaps named for the colors-of-the-rainbow mnemonic, has malware credits going back 11 years.
The virus appends itself to executables on IA64 Windows machines, or 32-bit Windows machines running 64-bit emulators. Symantec said the program was written in IA64 assembly language. This would indicate a fairly skilled coder.
