A New Zealand-based cybersecurity company is doing its best to help out victims of the BlackMatter ransomware operation. Emsisoft has helped prevent tens of millions of dollars in ransom payments and is actively putting an end to the BlackMatter scheme.
A successor to the DarkSide ransomware operation, which was behind the Colonial Pipeline attack, BlackMatter came on the scene in July. The ransomware scheme specifically targeted organizations known as critical infrastructure, including two within the U.S. food and agriculture industry. This made BlackMatter the subject of a CISA warning. It was also behind a recent attack on Japanese tech company Olympus, forcing it to shut down its EMEA operations.
Cybersecurity expert Emsisoft, which specializes in smart virus and malware protection, discovered a vulnerability in BlackMatter's encryption process that enabled the company to recover encrypted files without having to pay a ransom. The vulnerability was discovered earlier this year, but Emsisoft did not reveal it until recently so that BlackMatter would not have a chance to fix the flaw.
“Knowing DarkSide’s past mistakes, we were surprised when BlackMatter introduced a change to their ransomware payload that allowed us to once again recover victims’ data without the need for a ransom to be paid,” said Fabian Wosar, CTO of Emsisoft, in a blog post. “Since then, we have been busy helping BlackMatter victims recover their data. With the help of law enforcement agencies, CERTs and private sector partners in multiple countries, we were able to reach numerous victims, helping them avoid tens of millions of dollars in demands.”
Emsisoft alerted law enforcement after discovering the vulnerability, along with ransomware negotiations firms, incident response companies, national CERTs and trusted partners. BlackMatter victims were then referred to Emsisoft to recover their files instead of being forced to pay a ransom. The company says it is able to help BlackMatter victims who were encrypted before the end of September.
“This may well be the end of the BlackMatter brand,” said Brett Callow, a threat analyst at Emsisoft. "This is the second time their errors have cost their affiliates money, and the affiliates will likely not be too pleased about that. Unfortunately, even if the brand does end, the operators will likely return with a new one. In the past, the risk/reward ratio was heavily skewed to ‘reward.’ This effort demonstrates the public-private sector collaboration can swing the needle, and that’s a key element to combatting the ransomware problem. The less profitable it is, the less incentive the threat actors have.”
TechZone360 Contributing Editor
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