This is a typical boot sector virus. It sometimes displays a 'Runtime error' message. Defo was reported to be in the wild in several countries during summer 1996. [Analysis: Mikko Hypponen, F-Secure]
Defo was reported to be in the wild in several countries during summer 1996. [Analysis: Mikko Hypponen, F-Secure]
[Analysis: Mikko Hypponen, F-Secure]