In a novel maneuver for a disruption operation against cyber attackers, industry and law enforcement teamed up to conduct a court takedown of two widely-used criminal tools at once rather than individually, Microsoft said Tuesday.

The takedown simultaneously went after Amadey, a botnet that can serve as a malware delivery system, and StealC, an infostealer. Cybercriminals often use them in conjunction and they rely on the same infrastructure, Microsoft said.

“When multiple parts of an operation are disrupted together, attacks are harder to launch, scale, and recover from,” said Steven Masada, assistant general counsel for Microsoft’s Digital Crimes Unit. “The result: fewer disrupted services, fewer opportunities for cybercriminals to profit, and more friction when they try to rebuild. It’s no longer enough to go after threats one by one. We need to interrupt how the attacks are put together.”

Microsoft had been tracking Amadey with ESET, BitSight, Lumen and Mitsui Bussan Secure Directions. Meanwhile, Europol had been investigating StealC alongside law enforcement partners including Germany’s Federal Criminal Police Office and the Dutch and Danish National Police as well as IBM X-Force and Proofpoint.

They then joined forces and turned to the Racketeer Influenced and Corrupt Organizations (RICO) Act, used to help authorities go after organized crime, to disrupt more than 200 command-and-control servers. Microsoft said it gained insights from its artificial intelligence product Copilot that “allowed the legal team to treat both malware families as part of a single criminal conspiracy.”

Microsoft regularly leads court-authorized disruption operations, but the industry and law enforcement partnerships combined with AI to expand data collection and identify connections beyond what one company could normally do, it said.

Amadey and StealC were linked to more than 140,000 infected computers around the globe in the first week of May alone, the company said. StealC has ranked among the top infostealers for years since its emergence in 2023 and sells in underground forums as a malware-as-a-service. It’s typically used by Russia-linked groups.

Amadey dates back to 2018, and is also commonly employed by Russian groups, including in attacks on Ukraine.

Their interaction shows the assembly line-like structure of modern cybercrime, Microsoft said. Even if the cybercriminals behind both tools never coordinate, their tools are designed to work together, it said.

“StealC is an infostealer that collects sensitive data from browsers, cryptocurrency wallets, messaging applications, email clients, and gaming platforms,” the company wrote in a separate blog post. “It is a malware-as-a-service (MaaS) offering that threat actors use to generate customized payloads and manage stolen data through a centralized web panel. Meanwhile, Amadey is a MaaS loader that threat actors use to deliver StealC and other malware. Modular, pay-as-you-go models like StealC and Amadey allow threat actors to use a single initial infection to quickly escalate into multiple other threats.”

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Authorities on Thursday disrupted a botnet, a malware framework and seized infrastructure that Evil Corp and other cybercrime groups used to steal data and break into various networks.

The globally coordinated effort targeted SocGholish, multi-stage malware that has compromised websites, redirected users to traffic distribution systems (TDS) and slipped malware into their networks since 2017.

“The malware establishes an initial foothold into victim computers, collectively known as a botnet, and is then used by threat actors for further targeting with ransomware campaigns and espionage,” the FBI’s cyber division said in a statement. 

Cybersecurity firms, researchers and officials from the United States, Canada, Germany, the Netherlands and Europol took down 106 servers and remediated nearly 15,000 sites that were infected with the malware. Officials also disabled the botnet and notified victims.

Sites infected with SocGholish, which are primarily hosted on WordPress, were widespread and provided everyday services including restaurants and auto repair shops, according to the Dutch National Police. 

The botnet, also known as “FakeUpdates,” is linked to the Russian cybercrime group Evil Corp. It also provided initial access to other ransomware variants, including DoppelPaymer, WastedLoocker, Hades Ransomware, LockBit, RansomHub and others, according to Infoblox, which participated in the takedown. 

Proofpoint, which also participated in the disruption, described Evil Corp as one of the most prominent cybercrime groups in operation and the “grandfather” of a threat type that compromises websites and uses TDS to redirect users to malware.

Following the takedown, the FBI issued a public service announcement warning about cybercriminals using TDS to break into victim networks for ransomware or other financial scams. 

Cybercriminals redirect traffic from sites to bypass firewalls, obscure their activity, identify potential victims and send them to phishing pages to steal credentials, initiate financial scams, access networks, deliver other malware, and sell access to other cybercriminals, officials said.

The law enforcement action was part of Operation Endgame, a multinational effort targeting cybercrime since 2024, and more narrowly for the FBI part of Operation Riptide, an ongoing campaign targeting cybercriminals and the infrastructure and financial networks they use to commit fraud.

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European authorities took down a prominent virtual private network service and arrested the alleged administrator behind an operation that cybercriminals used to steal data, commit fraud and ransomware attacks, Europol said Thursday. 

First VPN, which was promoted on Russian-speaking cybercrime forums, gained popularity for providing services that allowed users to hide their infrastructure and identities. Officials said the service was entrenched in the cybercrime world and appeared in almost every major recent cybercrime investigation aided by Europol.

“For years, cybercriminals saw this VPN service as a gateway to anonymity,” Edvardas Šileris, head of Europol’s European Cybercrime Centre, said in a statement. 

“They believed it would keep them beyond the reach of law enforcement,” Šileris added. “This operation proves them wrong. Taking it offline removes a critical layer of protection that criminals depended on to operate, communicate and evade law enforcement.”

The operation stretched over two days earlier this week, led by France and the Netherlands, with support from Europol, Eurojust and eight additional countries. 

Authorities said they arrested the alleged administrator and searched their residence in Ukraine, but declined to name the person. Officials also dismantled 33 servers linked to the service and seized multiple domains, including 1vpns.com, 1vpns.net and 1vpns.org.

Investigators obtained First VPN’s user database and identified VPN connections used by alleged cybercriminals. Intelligence gathered during the operation uncovered thousands of users linked to cybercrime and formed additional leads connected to ransomware attacks and fraud schemes, officials said. 

Europol said First VPN’s users were notified of the shutdown and warned that their identities are now known to authorities. 

French and Dutch authorities started investigating First VPN in earnest in November 2023 and shared evidence with 16 countries to coordinate data analysis and support other ongoing investigations. Officials across multiple jurisdictions are using intelligence gathered during the operation to aid 21 additional inquiries globally.

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Russian intelligence-affiliated hackers have gained access to thousands of users’ messaging apps with a global phishing campaign, the FBI and the Cybersecurity and Infrastructure Security Agency warned in a public service announcement on Friday.

The high-value targets they’re pursuing include current and former U.S. government officials, political figures, military personnel and journalists, the two agencies said in the joint PSA about the hackers’ attempts to infiltrate commercial messaging applications (CMAs).

The U.S. alert comes on the heels of an earlier warning from Dutch authorities, who said last week that Russian hackers were “engaged in a large-scale global attempt” to take over WhatsApp and Signal accounts. The Dutch warning likewise followed a similar warning from Germany in February.

The U.S. agencies emphasized that the hackers had not been able to bypass end-to-end encryption, instead manipulating users into giving up access. The scheme involves hackers posing as Signal help personnel, then inviting them to click a link or provide verification codes or account personal identification number.

“After compromising an account, malicious actors can view the victims’ messages and contact lists, send messages, and conduct additional phishing against other CMA accounts,” the PSA explains. “(Note: reporting shows that the threat actors specifically target Signal accounts but can apply similar methods against other CMAs).”

However, “CMA users who strengthen their personal cybersecurity and defend against social engineering attempts can reduce the risk of account compromise and limit the effectiveness of the threat actors’ current tactics, techniques, and procedures,” the agencies said.

The Russian campaign is just the latest to seek to bypass the protections commercial messaging apps offer. CISA in November warned about spyware targeting of messaging apps. 

There sometimes has been a Russian intelligence nexus to the recent targeting. Google Threat Intelligence Group shined a spotlight last year on Russian attempts to target Signal users in Ukraine.

‘We anticipate the tactics and methods used to target Signal will grow in prevalence in the near-term and proliferate to additional threat actors and regions outside the Ukrainian theater of war,” the company said.

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Authorities from multiple countries dismantled SocksEscort, a residential proxy network cybercriminals used to commit large-scale fraud, claiming access to about 369,000 IP addresses since 2020, the Justice Department said Thursday.

Europol, which aided the investigation alongside various law enforcement agencies, Lumen’s Black Lotus Labs and the Shadowserver Foundation, said the malicious proxy service compromised routers and IoT devices in 163 countries. Officials said the proxy network’s payment platform received about $5.8 million from its customers.

The globally coordinated action, dubbed Operation Lightning, took down and seized 34 domains and 23 servers in seven countries. U.S. officials froze a combined $3.5 million in cryptocurrency allegedly linked to the botnet that was created from infected devices.

“Cybercrime thrives on anonymity,” Catherine De Bolle, executive director at Europol, said in a statement. “Proxy services like SocksEscort provide criminals with the digital cover they need to launch attacks, distribute illegal content and evade detection.”

SocksEscort’s operators assembled the botnet by exploiting a vulnerability in residential modems from an unnamed vendor, according to officials.

The cybercrime operation defrauded Americans and U.S. businesses of millions of dollars, the Justice Department said. More than one-quarter of the 8,000 infected routers SocksEscort advertised in February were based in the United States.  

SocksEscort began operating in 2009 and its command-and-control infrastructure went undetected by most tools for a very long time, Ryan English, information security engineer at Black Lotus Labs, told CyberScoop.

The botnet’s infrastructure, which was powered by AVRecon malware, was elusive and maintained a consistently high volume, claiming an average 20,000 victims weekly since early 2024. Its impact peaked in January 2025 when it ensnared more than 15,000 victims daily, according to Black Lotus Labs’ research. 

The company said it observed 280,000 unique IPs as victims of the proxy network since early 2025, and more than half of SocksEscort’s victims were based in the United States and United Kingdom.

“Given the high volume of victim generation, it would not surprise me if they eventually hit something really important that moved them up the list of networks to go after,” Chris Formosa, senior lead information security engineer at Black Lotus Labs, told CyberScoop. 

“They were exclusively marketing to cybercriminals and nowhere else,” he added. “With a network like this, once law enforcement gains legal access to backend infrastructure it can give them a lot of intelligence on other threat actors besides the botnet operators.”

Various agencies from Austria, Bulgaria, Eurojust, France, Germany, Hungary, the Netherlands and Romania assisted in the investigation and takedown.

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