m2cmds.php: Magento 2 Dev Tool or Deceptive Hacktool?

Is this m2cmds.php file an insecure third-party dev tool for Magento - or a malicious hacktool used by an attacker?
Skimmer Loaded Via Image On MemberPress Checkout Form & Magento

A payment card skimmer hidden within an existing PNG image on an infected WordPress website that uses MemberPress and collects payment data for private membership. A variant was also found stealing payment card information on an infected Magento website.
Trojan Malware, Recon, & BEC Attacks

Attackers were running recon on a foreign company via trojan spyware connected to a C2 panel on a compromised web host server. Unfortunately they forgot to have their logs and screenshots automatically purged from their C2 panel, so I was able to stumble upon their mainly intact C2 panel. Let’s see what it reveals about their operation.
Magento 2 Skimmer Uses getCredentialStorage

A PHP skimmer injected into a Magento 2 core file and used to steal login data from HTTP requests.
Recover Data From RansomWeb Malware

RansomWeb malware rewrites your file’s text to unreadable binary data and appends .xploiter to the file’s extension (e.g index.php.xploiter) - but you can use the malware against itself to revert back to your original files.