exe file makes its own copy

mugen · Oct 1, 2006

Something really weird is going on in my comp. I normally use firefox but today i used internet explorer to access some sites. And then onwards my comps behaving unusual.

Whenever I click on an exe file, instead of running it gives me and error "error launching installer" with the title showing "nsis error"....

I know there is some malware because whenever I clicked on 'my computer' it didnt open and instead there was some activity on the net. So i simply took out the net cable. Immediately "my computer" opened with the error something like -connection not available and gave me two choices - retry & work offline.

Now whenever I click on an exe file (in 90% cases) I get this error and a duplicate exe file is created in the same folder. The name is also same except that it ends in "~" symbol. (It is difficuilt to search for that symbol in google also)

Then all the codecs got corrupted or something. the pdf files and video files have become 'unrecognised format'. My comp was getting real slow.

So I formated the partition and reinstalled xp but still the error is there on all drives.

Plzz help.....

mugen · Oct 1, 2006

oh yes...regarding that duplicate exe file, it has about 100 kb lesser than that installer file and this works fine if used. but my comp is still slow.....

chaslang · Oct 1, 2006

Welcome to Majorgeeks!

If you formatted and reinstalled, the problems should be gone!

Do you have more than one partition? What is on the other partitions?

It is actually better to delete partitions, recreate them, format and them reinstall. But whatever media you reinstall from better be malware free. If it is not an original CD from Microsoft it could well be infected and could just recreate all your problems.

Proper procedures must be followed in order for us to help you! Here they are:

Please follow our standard cleaning procedures which are necessary for us to provide you support. Also there are steps included for installing, running, and posting HijackThis logs as attachments.

Run ALL the steps in this Sticky thread READ & RUN ME FIRST Before Asking for Support

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After doing ALL of the above you still have a problem make sure you have booted to normal mode and run the steps in the below link to properly use HijackThis and attach a log:

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exe file makes its own copy

mugen Private E-2

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chaslang MajorGeeks Admin - Master Malware Expert Staff Member