I posted a tutorial in the post that brought ClamUI to the forum's attention and I posted the commands on what to run without the need to go to the GitHub page with the one exception of acquiring the .deb package.
It requires that you uninstall ClamAV and the Flatpak and start from scratch.
Having searched Brave A.I. with the trojan name claims to be a false positive with ClamAV but there are Killwin family of malware but not with that name:
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is Win.Trojan.Killwin-24 a false positive in ClamAV?
Quick Answer
There is no specific information in the provided search context confirming whether Win.Trojan.Killwin-24 is a false positive.
The search results discuss ClamAV's general tendency to produce false positives for Windows applications and files that do not exist on Linux systems, noting that if only ClamAV reports a virus while other engines (like those on VirusTotal) do not, it is almost certainly a false positive . However, the specific detection name Win.Trojan.Killwin-24 is not mentioned in any of the provided snippets, which instead cite detections like Win.Trojan.Katusha , Win.Trojan.Ramnit , or Win.Trojan.Agent . To verify this specific signature, you would need to upload the affected file to VirusTotal to see if other antivirus engines flag it.
Are there known cases of Win.Trojan.Killwin-24 in malware samples?
Finished
Yes, Win.Trojan.Killwin-24 is associated with known malware samples, although the detection name might be a variation or misreporting of similar threats.
Analysis of a file named Trojan.KillWin.exe on ANY.RUN confirms it as malicious , categorizing it as a stealer designed to gain unauthorized access to user information such as files, passwords, and cryptocurrency. The malware is capable of keylogging, taking screenshots, and is often distributed via phishing campaigns.
Furthermore, Microsoft Defender detects variants like Trojan:MSIL/KillWin.MA!MTB and Trojan:BAT/Killwin.T , confirming that the KillWin family is recognized as a genuine threat by reputable antivirus engines. These variants can perform arbitrary malicious actions on an infected device.
While ClamAV may sometimes generate false positives for Windows-specific trojans on Linux systems, the existence of confirmed malware samples under the KillWin name suggests that Win.Trojan.Killwin-24 is likely not a false positive when detected on a Windows system or a file intended for Windows execution."