Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Endpoint

12/10/2018
02:45 PM
50%
50%

'Dr. Shifro' Prescribes Fake Ransomware Cure

A Russian firm aims to capitalize on ransomware victims' desperation by offering to unlock files then passing money to attackers.

A firm called Dr. Shifro promises to unlock encrypted files so targets can avoid paying their attackers a hefty sum. The organization says they will retrieve files for ransomware with no publicly available key – and they work with attackers to do it.

Researchers at Check Point recently discovered Dr. Shifro, a Russian firm falsely offering decryption services, while investigating the Dharma/Crisis ransomware.

The Crisis ransomware family, also called Dharma, was first seen in 2016. Back in Nov. 2016 and March 2017, there were master decryption keys for the Crisis family and security companies could create tools for victims. However, autumn 2018 brought new versions with no public key.

Dr. Shifro, which started in 2016, poses as a legitimate company and claims it can unlock files encrypted by new versions of Crisis/Dharma, as well as Scarab, No_More_Ransom, and Da Vinci ransomware. It claims it can exploit vulnerabilities in encryption algorithms of ransomware, which lets them restore RSA private keys. Researchers found this unlikely and investigated.

Findings show Dr. Shifro functions as a broker between ransomware victims and operators as a way of maximizing profit. Victims who want to unlock files pay Dr. Shifro, who passes money to the attacker. The attacker sends the files to Dr. Shifro, who returns them to the victim. The malicious firm offered to pay ransomware distributors the equivalent of $950 for doing this while charging victims $2,300. The firm could earn around $1,350 from one victim.

Read more details here.

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Florida Town Pays $600K to Ransomware Operators
Curtis Franklin Jr., Senior Editor at Dark Reading,  6/20/2019
Pledges to Not Pay Ransomware Hit Reality
Robert Lemos, Contributing Writer,  6/21/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Building and Managing an IT Security Operations Program
As cyber threats grow, many organizations are building security operations centers (SOCs) to improve their defenses. In this Tech Digest you will learn tips on how to get the most out of a SOC in your organization - and what to do if you can't afford to build one.
Flash Poll
The State of IT Operations and Cybersecurity Operations
The State of IT Operations and Cybersecurity Operations
Your enterprise's cyber risk may depend upon the relationship between the IT team and the security team. Heres some insight on what's working and what isn't in the data center.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-12280
PUBLISHED: 2019-06-25
PC-Doctor Toolbox before 7.3 has an Uncontrolled Search Path Element.
CVE-2019-3961
PUBLISHED: 2019-06-25
Nessus versions 8.4.0 and earlier were found to contain a reflected XSS vulnerability due to improper validation of user-supplied input. An unauthenticated, remote attacker could potentially exploit this vulnerability via a specially crafted request to execute arbitrary script code in a users browse...
CVE-2019-9836
PUBLISHED: 2019-06-25
Secure Encrypted Virtualization (SEV) on Advanced Micro Devices (AMD) Platform Security Processor (PSP; aka AMD Secure Processor or AMD-SP) 0.17 build 11 and earlier has an insecure cryptographic implementation.
CVE-2019-6328
PUBLISHED: 2019-06-25
HP Support Assistant 8.7.50 and earlier allows a user to gain system privilege and allows unauthorized modification of directories or files. Note: A different vulnerability than CVE-2019-6329.
CVE-2019-6329
PUBLISHED: 2019-06-25
HP Support Assistant 8.7.50 and earlier allows a user to gain system privilege and allows unauthorized modification of directories or files. Note: A different vulnerability than CVE-2019-6328.