We have a machine (XP SP3) that appears to have a functioning, updating Sophos (9.5.5 VDL 4.67G) installed which detects nothing when a full scan is run.
Nothing is showing as detected or cleanable on the SEC for the machine and SEC says the machine is up to date and last updated earlier this morning.
However any memory stick put into the machine seems to get infected with W32/Autorun-BQJ – this gets picked up when the stick is put into another of our machines running Sophos.
We've checked and there is no file c:\documents and settings\support\application data\ktfsfc.exe as mentioned in http://www.sophos.com/en-us//threat-center/threat-analyses/viruses-and-spyware/W32~AutoRun-BQJ.aspx on the machine.
Any suggestions for how to sort this machine - before we decide it's quicker to do a total rebuild?
Thanks.
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