Sigrun Ransomware

The Sigrun Ransomware is a file-locking Trojan that can encrypt the data on your PC, such as pictures, documents, and audio clips, automatically. The Trojan also displays symptoms associated with ransoming the unlocking service to any victims, including generating messages that it may display automatically as pop-ups. Have backups to reduce the vulnerability of your file data to these attacks and use professional anti-malware software for removing the Sigrun Ransomware from a compromised system.

The Trojan that Pillages Wikipedia for Inspiration

Trojans trying to make their campaigns of holding files hostage for cryptocurrencies or vouchers often benefit from a brand that makes their attacks seem more memorable, unique, or fear-inspiring than their frequently simple code is. Just joining the numbers of other, Norse mythology-inspired extortionists like the '.aesir File Extension' Ransomware, the Heimdall Ransomware, the '.odin File Extension' Ransomware and the '.thor File Extension' Ransomware, malware experts are confirming a similar threat, the Sigrun Ransomware.

The Sigrun Ransomware uses encryption for locking different formats of files. While malware experts are seeing no examples of the Sigrun Ransomware damaging the operating system, it may block documents and other data types on an infected machine. Users trying to find which files are under attack can search for any content using the '.sigrun' extension that this Trojan adds automatically (example: 'garden.gif.sigrun').

The Trojan also creates a Web page and an identical Notepad file for delivering its ransoming demands to the user. Although the threat actor is offering a three-file 'sample' of his decryption service, presumably, payments in Bitcoin or similar cryptocurrencies are required for gaining access to the full version of the software.

Internally, the Sigrun Ransomware also includes references to the valkyrie Sigrun from the Poetic Edda of Norse mythology. This fact doesn't imply that the Sigrun Ransomware only attacks Europeans necessarily; the information it quotes is available on Wikipedia publicly.

Sending a Warrior Back to Her Rest

None of the Sigrun Ransomware's components resemble those of Ransomware-as-a-Service families like the Crysis Ransomware or free software like Hidden Tear strongly. Until malware researchers can analyze the Trojan's executable for any encryption vulnerabilities, users only can back up their files to another drive before infection for the guarantee of a complete recovery of their data. Ransom instructions always should be considered as last resorts, if at all due to the risks of such transactions with criminal entities.

Threat actors may install this file-locker Trojan in several ways, including bundling it with downloads in a file-sharing network, attaching its delivery mechanism to an e-mail message that encourages you into opening its attachment or hosting it as the payload for an exploit kit on a corrupted website. Anti-malware products include protection from most infection vectors and should delete the Sigrun Ransomware immediately. Malware experts also recommend using secure passwords, if you maintain a server or network with financially valuable data especially.

Like Sigrun, herself, compared to famous names like Odin, Thor, or Loki, the Sigrun Ransomware may be relegated to a footnote in its underground industry. On the other hand, PC users without backups are equally at risk from small-time threats like the Sigrun Ransomware, as well as sprawling families like Hidden Tear.