Inside the AVCheck Takedown: How Law Enforcement Disrupted a Key Cybercrime Tool

Daily Security Review

In this episode, we unpack the international takedown of AVCheck, one of the largest counter antivirus (CAV) services used by cybercriminals to test and fine-tune malware before deployment. Led by Dutch authorities and supported by agencies from the U.S., Germany, France, and others, this operation marks a major win in Operation Endgame—a sweeping initiative targeting malware infrastructure, ransomware syndicates, and initial access brokers.

AVCheck enabled attackers to simulate antivirus scans and ensure their payloads were virtually undetectable, making it a cornerstone of the modern malware development cycle. Authorities seized domains, servers, and a rich database of user information, some of which links AVCheck directly to notorious ransomware groups. The same investigation also exposed ties between AVCheck and crypting services like Cryptor.biz and Crypt.guru, underscoring how deeply integrated these dark web services are.

We also explore the implications of this crackdown: how disrupting enabler services like AVCheck may prevent future cyberattacks, why ransomware groups are now shifting tactics—including potentially more violent threats—and what comes next as cybercriminals adapt. From undercover ops to fake login traps and forensic analysis, this episode covers the full scope of the AVCheck takedown and its impact on global cybercrime.