I encountered an old acquaintance today. Tip of the hat to Peter Radatti for pointing me towards an article by John Breeden II that proposes a very familiar idea: the Good Virus. (One that also often pops up in the form of the Good Worm, such as the various hues of Code that were proposed
“Test Files and Product Evaluation: the Case for and against Malware Simulation” is a paper presented at the recent AVAR conference by Eddy Willems, Lysa Myers and myself: we were all at the EICAR conference and figured that it was a good moment to combine our experience of testing, EICAR, AMTSO and the anti-malware industry to cover the developments that had taken place since Sarah’s paper.
[Update: Michael St Nietzel also pointed out that there's an issue with installers that verify a checksum before installation. In fact, this is a special case of an issue I may not have made completely clear before: unless this approach is combined with some form of whitelisting, there has to be some way of reversing the modification