Pendor Ransomware

Posted: September 6, 2017
Threat Metric
Threat Level: 10/10
Infected PCs 749

Pendor Ransomware Description

The Pendor Ransomware is a Trojan capable of damaging your files with a data-enciphering routine. Con artists use this feature to hold the affected data hostage while they ask for victims to pay ransoms such as Bitcoins. If possible, malware experts recommend using other methods of recovering any media, such as reverting to your last backup. Anti-malware products also may prevent this damage by deleting the Pendor Ransomware when they detect it.

A Renewal of Onion-Tinged Extortion Campaigns

A new Trojan using TOR-based ransoming methods is ready for distribution for September: the Pendor Ransomware. While it conducts attacks similar to those of traditionalist file-locking threats like Hidden Tear, malware researchers can't verify any current relationships it might have with old threats or ascertain what infection vectors it might be using for installing itself. Evidence implies that the Pendor Ransomware is targeting Russian-based PCs currently.

The Pendor Ransomware uses encryption for locking the files on any PC it infects, and malware researchers still are identifying the range of ciphers it employs. Typical file-locking strategies may target content like documents, while using asymmetric AES-RSA encoding to, first, encipher the file's data, and, then, protect the code that the victim needs for recovery. The Pendor Ransomware uses '.pnr' extensions for denoting every piece of media it blocks, which isn't in wide use within other Trojans' campaigns.

The Trojan also creates a text message that instructs the victim on how to pay the threat actors and retrieve the key for decrypting their files. The instructions offer both the victim's unique ID number and a link to the TOR (or the Onion Router) Web page that the Pendor Ransomware's admins are using for processing ransoms. The structure of the page, while straightforward, also is slightly unusual, and includes initial requests for the victim's email and Bitcoin wallet addresses.

Wiping out Every Trace of TOR Ransoms

Just like the crypto currencies the con artists often abuse, TOR isn't a threatening or illegal product intentionally but does facilitate attacks like the Pendor Ransomware's data-locking payload indirectly. The insistence on a Bitcoin-based payment method, along with the TOR's anonymity features, provides significant protection for the con artist's side of the transaction but none to the 'buyer.' Backing up your files to a location that the Pendor Ransomware can't access is highly recommended as a default data-preservation strategy for any digital content you judge as being valuable.

Installation exploits for the Pendor Ransomware could range from RDP-based, manual infections to email attachments that trick the user into infecting their PCs themselves. Implementing basic security protocols for network-accessible systems, such as using secure passwords, and disabling exploitable browser features (like pop-up windows, Flash and JavaScript) mitigate your chances of coming into contact with this threat. As long malware experts have yet to determine whether this Trojan is decryptable freely, protecting your media depends on preventative steps that delete the Pendor Ransomware with an anti-malware solution before it completes any encryption attacks.

TOR is an unintended benefit to any con artists wanting to hide their identities along with the privacy protection it gives to ordinary Web surfers. The Pendor Ransomware's campaign is one of many attacks showing that it's difficult, or even impossible, to control which parties benefit from advantages in the computing technology.

Use SpyHunter to Detect and Remove PC Threats

If you are concerned that malware or PC threats similar to Pendor Ransomware may have infected your computer, we recommend you start an in-depth system scan with SpyHunter. SpyHunter is an advanced malware protection and remediation application that offers subscribers a comprehensive method for protecting PCs from malware, in addition to providing one-on-one technical support service.

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Why can't I open any program including SpyHunter? You may have a malware file running in memory that kills any programs that you try to launch on your PC. Tip: Download SpyHunter from a clean computer, copy it to a USB thumb drive, DVD or CD, then install it on the infected PC and run SpyHunter's malware scanner.

Technical Details

Registry Modifications

The following newly produced Registry Values are:

Registry keySoftware\Classes\.PNR
Home Malware Programs Ransomware Pendor Ransomware

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