Last week I was told by our security department that my PC (running windows 7) was infected by a trojan and that it needed to be re-imaged. So re-imaged it was! Given the fact that I had been using this PC for a while, visited thousands of web pages and used USB key to
3 days later, the security department notified me again that my PC is infected with malware and that my PC will (again) need to be re-imaged. Since I do not want to reimage my PC every 3 days, I want to figure out the infection vector (assuming it is the same malware)
Possible infection vectors I found:
- Visiting a compromised web site
- Downloading a trojan hidden in legitimate software (I did not download/install more that 3 pieces of software since the reimaging, so that should be easy to find)
- Connecting my iPhone to the USB port of my computer to charge it.
Can the latter be the cause of infection, even if the drive was not mounted? If so, is there a way to check/disinfect it?I found lots of tools for autorun.inf related malware, but these require the media to be mounted as a drive.
Edit: I have not been told what the exact malware was, nor when or how it was detected.