Search This Blog

Powered by Blogger.

Blog Archive

Labels

Footer About

Footer About

Labels

Showing posts with label Operation Endgame. Show all posts

Operation Endgame Disrupts Global Cyber Crime Assembly Line


Private companies and international authorities have disrupted a malicious “assembly line” that let hackers steal millions of login details and theft of $47 million in ransom payments via extortion. The operation aimed at catching two tools that are used in online scams.

The first tool is called Amadey, a malware-as-a-service platform for disrupting devices and deploying infected payloads for ransomware and related attacks. Amadey was first discovered in 2018 and in 2025, it exploited GitHub as it stored system info from malicious devices and deployed custom payloads.

The second tool is called StealC, it is an infostealer-as-a-service tool that steals cryptocurrency wallets, browser extensions, authentication cookies, and login credentials.

Disrupting a crucial link in the cyberattacks chain

Amadey and StealC are distinct tools that function autonomously. They are widely used, but many people use them in their personal cybercrime operations. 

The tools depend on the same infrastructure to function. Microsoft made this link after analyzing the tools using AI. The discovery allowed Microsoft to stop both tools simultaneously.

“This action goes after the cybercrime ‘assembly line,’ where coordinated tools drive ransomware, financial fraud, and disruptions to public services. Amadey and StealC are often used alongside each other: Amadey helps attackers gain access to devices, while StealC steals passwords and sensitive information. Together, they form a critical link in the chain,” Microsoft said.

About the investigation

Companies gathered proof that the tools shared the same infrastructure and invoked RICO statutes against organized crime. This resulted in treating the two tools as part of a single scam. 

Microsoft has disrupted over 200 C2 servers and shut down criminal control of over 18,000 compromised computers. Europol also assisted in the operation to track down the culprits and recovered around 27 million stolen login details and found $47 million worth of crypto assets tied to cybercriminals.

“During this action, 326 servers and 142 domains were actioned by law enforcement and the private sector partners, severely crippling the malware’s distribution network. By taking down these tools simultaneously, the collaboration between law enforcement and private parties has increased friction for cybercriminals, making it harder for attacks to succeed, spread, or recover,”  Europol said.

Operation Endgame

Other firms that helped in “Operation Endgame” are ESET, IBM X-Force, ESET, Mitsui Bussan Secure Directions, and Bitsight. 

According to Europol, another tool that disrupted Operation Endgame was SocGholish. It is a malware installer tied to the Russian cybercrime group Evil Corp. that distributes via hacked websites. If you visit such sites, you will be tricked into installing malware apps mimicking as browser extensions or genuine software.  

Undercover Operation Shuts Down Website Helping Hackers Internationally


Hackers used AVCheck to see malware efficiency

International police action has shut down AVCheck, an anti-virus scanning website used by threat actors to check whether their malware was detected by mainstream antivirus before using it in the attacks. The official domain “avcheck.net” now shows a seizure banner with the logos of the U.S. Secret Service, the U.S. Department of Justice, the FBI, and the Dutch Police (Politie).  

The site was used globally by threat actors

According to the announcement, AVCheck was a famous counter antivirus (CAV) website globally that enabled hackers to check the efficiency of their malware. Politie’s Matthijs Jaspers said, “Taking the AVCheck service offline marks an important step in tackling organized cybercrime." With the collaborative effort, the agencies have disrupted the “cybercriminals as early as possible in their operations and prevent victims." 

The officials also discovered evidence linking AVCheck’s administrators to encrypting services Cryptor.biz  (seized) and Crypt.guru (currently offline). Crypting services allow threat actors to hide their payloads from antivirus, blending them in the ecosystem. Hackers also use a crypting service to hide their malware, check it on AVCheck or other CAV services to see if is detected, and finally launch it against their targets. 

Details about the operation

Before the shutdown of AVCheck, the police made a fake login page warning users of the legal risks when they log in to such sites. The FBI said that “cybercriminals don't just create malware; they perfect it for maximum destruction.” Special Agent Douglas Williams said threat actors leverage antivirus services to “refine their weapons against the world's toughest security systems to better slip past firewalls, evade forensic analysis, and wreak havoc across victims' systems."

Operation Endgame

The undercover agents exposed the illegal nature of AVCheck and its links to ransomware attacks against the U.S. by purchasing these services as clients. According to the U.S. DoJ, in the “affidavit filed in support of these seizures, authorities made undercover purchases from seized websites and analyzed the services, confirming they were designed for cybercrime.”

The crackdown was part of Operation Endgame, a joint international law enforcement action that captured 300 servers and 650 domains used in assisting ransomware attacks. Earlier, the operation cracked down on the infamous Danabot and Smokeloader malware operations.