Cannot install Malwarebytes or ANY AV/HJT

[HuxleysChair]

I use XP Pro and believe I have a nasty bug that I caught as I was setting up a new drive. I ran Trojan Remover, which found many- they were removed, now it runs clean. I was able to install Spybot, which removed 20 more entries, one for a "Remote Access Trojan". But I cannot download any AV software, sometimes being redirected. When I d/l malwarebytes I get an empty exe file along with a part file - useless. I tried the suggestion to disable in Non-Plug-n-Play drivers the TDSSServ but I do not have it. I disabled TDS MAPI as a guess and rebooted. I tried saving the malware bytes setup exe as a different name but it would not open. Also, I cannot open any installers on the network, which has never been a problem - I get permission errors. Looked to reset permissions w/ admin account but no luck. I downloaded Hijack this, and some other free AV software to try, but none of the installers will open, I get a 'not a Win32 app' error.

Safe Mode didn't yield success in terms of additional downloadability/installations or progress.

I have never encountered such a nasty bug. Any help would be appreciated. Thanks!

IBM Thinkpad t42

[HuxleysChair]

More info: I also tried to download spyware doctor but also get the .part file, so the exe file is useless.

Also tried to d/l the experimental Kaspersky A/V Firefox add-on but I get an error upon installation

[AdvancedSetup]

Hi there, basically post what you can in the HJT forum. If you can't run anything then just open a new topic and let us know you can't run anything.

Hello and Welcome to Malwarebytes.org

If you're having Malware related issues with your computer that you're unable to resolve.

1. Please read and follow the instructions provided here: I'm infected - What do I do now?
2. If needed please post your logs in a NEW topic here: Malware Removal - HijackThis Logs
   
3. When posting logs please do not use any Quote, Code, or other tags. Please copy/paste directly into your post and do not attach files unless requested.
   

• Please do not post any logs in the General forum. We do not work on any logs posted in the General forum.
  
• Please do not install any software or use any removal/scanning tool except for those you're requested to run by the Helper that will assist you.
  
• Using these other tools often makes the cleanup task more difficult and time consuming.
  
• If you have already submitted for assistance at one of the other support sites on the Internet then you should not post a new log here, you should stay working with the Helper from that site until the issue is resolved.
  
• Do not assume you're clean because you don't see something in the logs. Please wait until the person assisting you provides feedback.
  
• There are often many others that require asistance as well, so please be patient. If no one has responded within 48 hours then please go ahead and post a request for review
  

• NOTE: If for some reason you're unable to run some or any of the tools in the first link, then skip that step and move on to the next one. If you can't even run HijackThis, then just proceed and post a NEW topic as shown in the second link describing your issues and someone will assist you as soon as they can.