[False positive?] Malware warning for a file in the repo

[XJDHDR]

Windows Defender gave me a warning about one of the files in the repo containing malware when I pulled it.
The problem file was: yara\official_rules\webshells\WShell_THOR_Webshells.yar
Windows Defender claimed that it detected: Backdoor:PHP/Dirtelti
Is there malware in that file?

If so, please remove it.
If it's a false positive as I suspect, it may be a good idea to report this to MS.