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Rezm Ransomware

Posted: March 2, 2020

The Rezm Ransomware is a file-locking Trojan from the Ransomware-as-a-Service known as the STOP Ransomware or the Djvu Ransomware. Infections will keep your files from opening by encrypting them partially and can include additional security risks and data loss issues. Users should always have non-locally-saved backups for recovering any digital media and use their preferred anti-malware products to remove Rezm Ransomware on sight.

The Unstopping Nature of Rental Trojan Extortion

Although freeware and rogue projects aren't absent from the threat landscape, file-locker Trojans in 2020 are, so far, the output of the Ransomware-as-a-Service industry, mainly. Families like the STOP Ransomware, the Globe Ransomware, and the Dharma Ransomware are remaining viable options for threat actors without interest or expertise for developing software from scratch. The result, trojans like Rezm Ransomware, are 'affordable' software – but more so for their admins than their victims.

The Rezm Ransomware's installation may use any exploits that the hiring attacker prefers. Untargeted STOP Ransomware campaigns sometimes use malvertising, Exploit Kits or even torrents. After getting system access, Rezm Ransomware establishes its persistence with Registry changes and launches various attacks automatically.

Some of the most threatening features of the Rezm Ransomware installations include:

  • The Rezm Ransomware scans drives, including network shares, for digital media formats of files and encrypts them (using AES with extra RSA security). This attack prevents the affected content from opening in their regular programs.
  • The Rezm Ransomware can destroy any Shadow Volume Copy backups, such as the Restore Points, through CMD system commands.
  • The Rezm Ransomware may block security-related websites like microsoft.com by altering the user's Hosts file, a text file that configures the system's translating IP addresses to Web domains, and vice versa.

Like nearly every file-locking Trojan, the Rezm Ransomware profits from its attacks through a ransom-negotiating service over the decryptor or unlocker. The Rezm Ransomware is using the standard prices of the STOP Ransomware family, AKA, nearly one thousand USD in the Bitcoin cryptocurrency.

Stoppering Up STOP Ransomware's Stream of Software

The Rezm Ransomware is an easily-recognizable member of its family. Victims can, besides finding the traditional STOP Ransomware ransoming message, also take note of the extension. Current members of the STOP Ransomware's family use four-character strings such as 'rezm,' like in the campaigns of the Alka Ransomware, the Btos Ransomware, the Msop Ransomware or the Zobm Ransomware. The family also is notable, unfortunately, for having encryption that's secure against any unlocking attempts by third parties reasonably.

Because the chances of decrypting content without paying are so low, malware experts recommend backing work up to devices that the Rezm Ransomware can't compromise. Removable devices or other forms of storage that aren't accessible through an Internet-connected PC can offer the cheapest and most effective recovery options. Preventing attacks by scanning e-mail attachments, leaving macros off, and browser-protecting features like script blockers also are invaluable.

Most Ransomware-as-a-Services depend on short-duration attacks with long-term consequences, rather than maintaining a more prolonged presence on a PC, like backdoor Trojans. Accordingly, right anti-malware products should identify, block, or remove the Rezm Ransomware as is necessary, assuming they're active at the time of the infection.

The Rezm Ransomware is another, 'casual' rental of illicit software for equally-law-breaking purposes, with fast payouts being the attacker's intended end game. Victims who find alternatives to paying ransoms also will help trim away possibilities of future attacks by preventing Ransomware-as-a-Services from making any money off of their business models directly.

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