Unable to Delete or Quarantine “Trojan:HTML/CryptoStealBTC” Threat

How to Address the Persistent “Trojan:HTML/CryptoStealBTC” Issue

Encountering persistent malware can be a frustrating experience, especially when it seems to evade all attempts of removal. One particularly troublesome threat you may come across is the “Trojan:HTML/CryptoStealBTC.” If you’ve found yourself in this situation, you are not alone, and there are steps you can take to remove this stubborn Trojan.

Understanding the Threat

The “Trojan:HTML/CryptoStealBTC” is designed to target sensitive information, particularly associated with cryptocurrencies. It can be alarming to see such a threat repeatedly detected, despite your efforts to remove it. In many cases, traditional antivirus programs may struggle to eliminate these types of threats fully.

Initial Steps for Removal

Run Windows Defender Again: While you’ve indicated that Windows Defender didn’t succeed in removing the threat, it’s advisable to run a full system scan once more. Make sure that your antivirus software is fully updated before conducting this scan.
Utilize Malware Removal Tools: Although you mentioned attempting to use Malwarebytes and AVG without success, consider trying other reputable malware removal solutions. Some well-known options include:
HitmanPro
ESET Online Scanner
AdwCleaner

These tools often detect stubborn malware that might slip past conventional antivirus programs.

Manual Removal Approach

If automated tools continue to fail, you might need to take a more hands-on approach:

Locate the Infected File: You noted that the files are found in:
C:\users\user\appdata\local\steam\htmlcache\code cache\js\319515f339baa15f_0

Navigate to this directory and check for any files that look suspicious or are directly associated with the Trojan.

Delete the Malicious Files: If you’re confident that you’ve identified the infected files, you can try deleting them manually. Be cautious and ensure that you are not removing critical system files.
Clear Browser Cache: Since this Trojan is within the HTML cache of Steam, clearing your browser cache and any associated cookies might help to eliminate remnants of the malware.