I run XP Pro on a machine a friend built for me.
While browsing today Firefox suddenly disappeared and one of the fake anti-malware programs showed up and started running. Couldn't run Malwarebytes, RogueKiller, or DSSKiller. Rebooted into safe mode with networking, and tried various programs to see what worked and what came up in task manager. An unknown program (mvs.exe) kept popping up, so I stopped it via task manager. I searched for this and found it newly installed in Program Files, so shredded it with Window Washer. Couldn't shred the prefetch version, so deleted that and shredded everything in recycle bin.
Now it no longer comes up when I try to start anything, but most programs won't run. Each time I get an error message stating it can't find firefox.exe, etc. This also happens when I try to run the program's executable from within Program Files. Oddly enough, some personal language and study programs are unaffected, also Thunderbird will run directly from Start menu. Also, if I bring up a document/picture and click on it, it will open in WordPerfect, Word, Excel, Foxit Reader, Photoshop, etc. (but not WMPlayer). Even firefox will come up if I click on a link embedded in a document/email, but again, I can't access it directly.
Tried downloading firefox from the computer I'm typing on, also mbam, and transferring each to the affected computer. When i try to install either, I get the "can't find .exe" message. Even tried renaming mbam install, but same issue (except it keeps stating that it is "x>.exe.exe. Also can't right-click on Properties in My Computer, instead get an error message Windows cannot find 'rundll32.exe'
Any help you can offer?
Edited by hamluis, 03 December 2011 - 03:31 PM.
Moved from XP to Am I Infected.