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'.kraussmfz File Extension' Ransomware

Posted: November 22, 2018

The '.kraussmfz File Extension' Ransomware is a file-locking Trojan and a possible variant of the _readme Ransomware. It uses encryption as a way of blocking your media files and forcing you into paying for a decryptor, which the threat actors hold for ransom. This threat may be targeting vulnerable business networks preferentially, and network admins should secure their logins, RDP and firewall settings appropriately, along with keeping updated anti-malware tools for removing the '.kraussmfz File Extension' Ransomware on sight.

Trojans Playing High Stakes Games with Businesses' Files

The ever-popular target for sabotaging digital hostages for profit, the network-accessible business system, is getting another danger to its files. While it's not identical to the slightly older Trojan entirely, the '.kraussmfz File Extension' Ransomware bears some significant similarities to the _readme Ransomware, another November-running, file-locking Trojan. Like the _readme Ransomware, malware researchers also estimate that it's attacking business networks that its criminals are hand-selecting.

The '.kraussmfz File Extension' Ransomware, which some cyber-security sources are referring to as the IEncrypt Ransomware, is circulating itself as being an installer for Microgaming, a gambling software company. Once it's on-board, it locks media files, such as documents, photos or databases with AES-256 and RSA-512 encryption securely. The '.kraussmfz File Extension' Ransomware uses the same technique as the _readme Ransomware for customizing the extensions of what it locks, specific to a target employee or company. The likelihood of its also specializing its infection strategies is substantial.

The majority of file-locker Trojans targeting networks, as the '.kraussmfz File Extension' Ransomware does, will spearhead their attacks with some combination of Remote Desktop exploits, e-mail attachments or embedded links and brute-force attacks. PDF and Word macro vulnerabilities and browser JavaScript, Java and Flash are traditional loopholes for infections. Many, but not all of these delivery methods hinge on exploits that the user has failed to install appropriate security patches for correcting.

Taking Games of Chance Out of Your Servers

There is no free decryption service available, for now, for either the '.kraussmfz File Extension' Ransomware or the earlier _readme Ransomware. Although the '.kraussmfz File Extension' Ransomware offers ransoming instructions for its threat actor's file-unlocking help in a text note, malware experts recommend against paying it unless no better solution is possible. Backing up work to other devices is the best, default solution for eliminating long-term loss of media from file-locking Trojans of every family.

Network admins can improve their server's strength against the '.kraussmfz File Extension' Ransomware campaign substantially by avoiding risky e-mail usage, using brute-force-proof logins, and keeping their RDP and firewall settings under close supervision. Users should avoid enabling macros, JavaScript, and other, exploitable content without verifying the source's trustworthiness. Anti-malware products are isolating and removing the '.kraussmfz File Extension' Ransomware easily, which, like most file-locking Trojans, possesses few notable defenses besides hoping that the victim doesn't scan it.

If the _readme Ransomware is becoming a proper family of file-locker Trojans, the '.kraussmfz File Extension' Ransomware is one of many more threats that are coming. However, the victim is almost always to blame for ransoming situations partially since a backup is all that it takes for negating this threat's payload.

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