According to a study published by Guardicore Labs, a malware botnet known as FritzFrog has been deployed to ten millions of IP addresses. The malware has largely targeted governmental offices, educational institutions, medical centers, banks, and telecommunication companies, installing a Monero (XMR) mining app known as XMRig.
Guardicore Labs explains that FritzFrog uses a brute-force attack on millions of addresses to gain access to servers. That’s where an attacker submitting many passwords or passphrases with the hope of eventually guessing correctly.