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Final Ransomware

Posted: April 6, 2017

Threat Metric

Threat Level: 10/10
Infected PCs: 39
First Seen: April 6, 2017
OS(es) Affected: Windows

The Final Ransomware is a new version of GX40 Ransomware, which can encode your files to keep you from opening them and launch pop-ups containing ransom notes. Backing your hard drive up can prevent the Final Ransomware from causing any damage that you can't reverse freely, which malware experts always advise instead of paying ransom money. Industry-standard anti-malware solutions also can detect and remove the Final Ransomware as a threat without letting it harm your local media.

Trojans Finalizing Your Ransomware Education with Experience

Malware authors are becoming used to providing after-the-fact educational tips to victims who aren't familiar with file-encrypting threats but may be sources of ransom money. The design of new threats their variants, like the newest version of the GX40 Ransomware, include messages with links to descriptions of the same attacks that the Trojans are in the midst of deploying inevitably. The new form of that Trojan, the Final Ransomware, may be a wholesale replacement or a variant under the control of a separate group of threat actors.

While the available file data offers limited hints as to how its admins are handling the installation phase of their campaign, the Final Ransomware might be distributing through instances of the RIG Exploit Kit, free downloads or e-mail attachments. The Trojan uses its system access to encipher your local files with an AES-derived algorithm, letting it lock such media as documents, pictures and spreadsheets. Malware experts are unable to find evidence of the Final Ransomware damaging the operating system, or other, core software, although such attacks would be within the realm of minor configuration changes.

The Final Ransomware also launches a pop-up window to display its ransoming message although it uses a format slightly different from that of the GX40 Ransomware. The threat actor provides links to general explanations of ransomware technology, an e-mail address, and an 'identifier' string with a copy-friendly UI. From the con artist's point of view, standard practice for a Trojan campaign of this format is for the victim to transfer money to receive the decryption key that matches the identifier, in theory, letting you unlock your files. The decryption module is built into the Final Ransomware and doesn't require a separate download.

Final Thoughts on the Latest Fork of a Trojan Project

The Final Ransomware is just entering into a stage of large-scale analysis by the anti-malware industry, with many products identifying it as a member of the Hidden Tear family incorrectly. Decryption for free isn't always impossible, but, due to the variety of encryption methods in use by different Trojans, malware experts recommend against having too much reliance on this form of data recovery. Externally backing up your files is a more guaranteed way of halting file damage from any file-encrypting threat, and the Final Ransomware is not part of the minority of Trojans capable of compromising cloud storage accounts.

Trojans like the Final Ransomware are commonly identifiable as fake text messages or spreadsheets that their threat actors may attach to e-mail messages. These communications may pretend to be notifications from a reputable organization or company such as a package shipping service. When not certain about the safety of a file, always let your anti-malware tools analyze it for potential threats. Even documents can include exploits, such as macros, that can install threatening software. Anti-malware industry-wide rates of success for deleting the Final Ransomware are roughly fifty percent and rising.

This Trojan doesn't block other applications extensively, and just removing a file-encoding Trojan like the Final Ransomware is unlikely of being difficult. Recovering from an encryption attack is more of a challenge significantly, showing how valuable even the occasional backup can be to anyone inadvertently.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



file.exe File name: file.exe
Size: 39.42 KB (39424 bytes)
MD5: 391a577cf38c08a71b6573af6cb61d7e
Detection count: 85
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: April 7, 2017

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