My desktop PC got infected quite a while back, and with the help of this forum the PC was eventually thoroughly cleaned. Since then, I have practiced safe hex, updated my Windows XP security patches, my malwarebytes, my Superantispyware, and my Avast definitions regularly, and performed once-a-week scans. Everything was fine, until today.
I did my weekly overnight scan last night, and this morning Malwarebytes had something to report. It told me that a couple of files (from the same source) were infected with BACKDOOR.MSIL.PGEN.
The strange thing is, the two infected files were downloaded back in 2008, used once or twice, and not used since. So why did Malwarebytes not pick these up before?
I have not noticed anything suspicious happening with the PC, but I am a little worried by this new detection.
Is this a likely to be a false positive? Anything to worry about? I let Malwarebytes delete the two offending files.
I thought I would raise this here, in case I need to perform any further checks.
Edited by RockVacirca, 14 April 2012 - 04:18 AM.