Reyptson Ransomware

Posted: July 18, 2017

Threat Metric

The Threat Meter is a malware assessment that SpywareRemove.com's research team is able to give every identifiable malware threat. Our Threat Meter includes several criteria based off of specific malware threats to value their severity, reach and volume. The Threat Meter is able to give you a numerical breakdown of each threat's initial Threat Level, Detection Count, Volume Count, Trend Path and Percentage Impact. The overall ranking of each threat in the Threat Meter is a basic breakdown of how all threats are ranked within our own extensive malware database. The scoring for each specific malware threat can be easily compared to other emerging threats to draw a contrast in its particular severity. The Threat Meter is a useful tool in the endeavor of seeking a solution to remove a threat or pursue additional analytical research for all types of computer users.

The following fields listed on the Threat Meter containing a specific value, are explained in detail below:

Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.

Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.

Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.

Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.

% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.

Threat Level:	10/10
Infected PCs:	42

First Seen:	July 18, 2017
Last Seen:	September 10, 2021
OS(es) Affected:	Windows

The Reyptson Ransomware is a Trojan that locks your files with encryption to force you into paying for its decryption solution. The Reyptson Ransomware infections also compromise e-mail client data for distributing themselves to new targets and potential victims should anticipate its installation exploits to include targeted e-mail messages. Passive anti-malware protection may delete the Reyptson Ransomware or block a browser content that could result in its installation, and backups can help you recover your files without paying.

Trojans Taking the Means of Distribution into Their Own Hands

Most Trojans using encryption-based attacks depend on other threats heavily for handling how they circulate and install themselves. This compartmentalized method of managing a file-ransoming campaign can be efficient, but one threat actor is eschewing it for a more non-traditional strategy: by having their Trojan pull 'double-duty' as both an encryptor and an e-mail spammer. For now, the Reyptson Ransomware is targeting only Spanish speakers and the users of the Thunderbird client.

The initial message pretends to be a Paypal invoice that bears a link supposedly to print a receipt. The link leads to a compromised website serving the Reyptson Ransomware, which pretends to be an RAR archive. As a part of its payload, the Reyptson Ransomware collects Thunderbird address book data for new e-mail addresses of victims to compromise in the same manner.

The Reyptson Ransomware's other traits appear to be in line with similar features that malware experts see appearing in separate, file-encrypting campaigns. The Reyptson Ransomware blocks the victim's media files with an encryption cipher, including inserting new '.REYPTSON' extensions into their names. The accompanying text message it drops in the same directories as all locked content does little more than redirecting the victim to a TOR-supported ransom-paying service, with the demanded fees for the decryptor starting at 200 Euros, and rising if you don't pay within three days.

Cutting the Cost of an Invoice Hiding Extortion

The Reyptson Ransomware may be the first .NET Framework-based Trojan to bundle this distribution method within the same software that's also encoding the victim's content. However, novelty aside, the Reyptson Ransomware's using the .NET platform limits its attacks to Windows-based systems. Victims also can protect their browsers by using appropriate security settings, monitoring downloads for fake extensions, and having anti-malware tools blocking unsafe addresses by default.

Malware researchers have yet to discern whether the Reyptson Ransomware is open to being cracked, but paying ransoms is never recommended as a first or preferable solution. Your media always should be backed up to another server or peripheral device, which will let you restore anything without needing the Reyptson Ransomware's decryptor. Uninstall the Reyptson Ransomware with anti-malware products to prevent any further enciphering attacks or, if appropriate, quarantine it to provide samples for security researchers.

Although the Reyptson Ransomware's authors are sending this threat to Spanish speakers, its distribution exploits are wholly applicable to any country using Paypal or the Thunderbird e-mail client in high numbers. This mode of infection raises negative security implications, not just for the victim, but for anyone the victim communicates with via e-mail virtually.

Reyptson Ransomware

Threat Metric

Trojans Taking the Means of Distribution into Their Own Hands

Cutting the Cost of an Invoice Hiding Extortion

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