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Cws Re-infection Executables

2 min read

This thread's last reply is from . Advice, software, and links below may be out of date — treat specific steps and download links with caution.

I'm not sure if this is the right place to post this, but I have what might sound like a stupid question that I'm wondering about and I haven't been able to find any documentation. I am repairing a system that had quite a bit of spyware on it, and when I was checking something in the owner\Documents & Settings folder\Application data\ I happened to see a folder named 'iefeatsl' which I know is a CoolWebSearch variant. The folder contained the files: msiesh.new and submit2.exe. I looked in the msiesh.new with my viewer and it's the {FD9BC004} .dll that I'm assuming is not yet executed.

When a CWS infection is executed does it also install pre-defined setup files or folders like this that would install a new infection based on a trigger from a given infection that is removed? Also, do they always use a [filename]2.exe pattern or is it random ? Because I found another lone executable named TestManager2.exe that was in the the same Docs & Settings\ owner\App Data folder but was in Microsoft\Installer\{E47EA4D…}. I've followed all the CWS information links and read everything by Merijn but I may have missed it and it sure would help me. Thanks.
Thanks. I'll check it out. This is might be a stupid question, but I'm wondering if anyone has seen or heard that there could be uninstalled CWS hidden files ready to stealth execute that can be triggered by an active variant if it is removed. The reason is because there are folders in several places on this kid's machine that contain [filename]2.exe and a [filename].new. And if you look inside the .new file, it looks to be the inf for a CWS BHO. And right out the gate I took 4 trojan droppers out of this thing. I've worked 5 hijacked machines this week all from the same family, I'm probably getting paranoid, but was just wondering. Thanks.