According to Sekoia, the attack consists of exploiting the bug CVE-2025-8088, a path traversal bug in WinRAR, to run an HTML App payload called GammaPhish, which is later used to get a VBScript payload from the C2 server. The main goal is to fingerprint the host device and update the network settings in the registry via dead drop resolvers (DDRs), retrieve and launch arbitrary VBScript payloads from the C2 servers.
“Gamaredon’s arsenal has undergone a significant transformation over the last decade, transitioning from Pteranodon custom-built framework into a fragmented and modular malware. Based on our observation, today’s Gamaredon capacities are characterised by a proliferation and a highly active development cycle of new malware variants,” said Sekoia
One payload is a VBScript worm called GammaWorm that builds persistence through scheduled tasks and is built to hide authentic directories in network shares and USB drives and replace with infected Windows Shortcut (LNK) files. This causes the launch of arbitrary code gotten from a C2 server.
To fix C2, GammaWorm starts a GET request to the public Telegram channel. Via genuine platforms such as Telegram, hackers blend with regular traffic, escape getting caught, and launch long-term spying campaigns. GammaWorm also depends on NTFS Alternate Data Streams (ADS) tactics to hide its core modules.
A different malware family deployed through GammaLoad is a modular information stealer called GammaSteel that stores files matching particular extensions and retrieves the stolen files on AWS S3 bucket or a threat-actor regulated server as a backup option. According to Sekoia, the infection chain could be used to launch different malware strains like GammaWipe or GamaWiper, this depends on the hacker’s targets.
"The exact deployment vector for GammaWorm remains ambiguous; it could be dropped concurrently by GammaLoad, or introduced independently via a user executing a weaponized USB drive," it noted. "In addition, assessing the global execution flow, we assess with high confidence that GammaPhish is designed to deploy GammaLoad first,” Sekoia said.
Russian state-sponsored actor Gamaredon associated with the official Federal Security Service (FSB) has a long history of targeting Ukraine and its government, critical infrastructures, military via spear-phishing emails that consist infected attachments in “booby-trapped RAR archives”, according to the Hacker News.
Gamaredon, a Russian state-sponsored intrusion-set officially linked to the Federal Security Service (FSB), has a history of targeting Ukraine, particularly government, military, and critical infrastructure entities, using spear-phishing emails containing malicious attachments, in this booby-trapped RAR archives.
A congressional committee is seeking answers from some of the largest telecommunications providers in the United States as financial losses linked to scams continue to rise across the country.
The inquiry comes from the Joint Economic Committee, whose leadership has asked major wireless carriers AT&T, Verizon, and T-Mobile to provide details about the measures they use to detect, monitor, and disrupt fraudulent activity occurring across their networks.
In a letter sent to the companies, committee chairman David Schweikert and ranking member Maggie Hassan said consumers should be able to trust the phone calls and text messages they receive from legitimate sources such as schools, healthcare providers, and other essential services. However, they noted that scam messages have become increasingly convincing, making it harder for people to distinguish fraudulent communications from authentic ones. The lawmakers argued that too much responsibility currently falls on consumers to identify suspicious activity on their own.
As part of the request, the committee is seeking information about how telecom providers gather intelligence on scams, monitor cybercrime-related activity, and respond to malicious actors who abuse communication networks to target the public.
The congressional review reflects broader concern in Washington over the rapid growth of cyber-enabled fraud. Scam operations have become a significant economic issue in recent years, with estimates indicating that Americans lost roughly $200 billion to various forms of fraud and cybercrime during 2024. Criminal groups increasingly use text messages, phone calls, social engineering techniques, and online platforms to reach potential victims at scale.
Telecommunications companies are not the only organizations facing scrutiny. Lawmakers have also examined the role played by satellite internet providers, online dating services, artificial intelligence firms, data brokerage companies, and federal agencies in either facilitating, detecting, or responding to cyber-enabled scams.
Efforts to address fraudulent communications are not new. In 2019, Congress passed the TRACED Act, legislation designed to curb robocalls and caller ID spoofing. The law, together with actions by the Federal Communications Commission, required major carriers to implement caller authentication technologies intended to help verify the origin of calls and improve investigators' ability to identify criminal operators.
Despite those measures, scam campaigns continue to reach consumers in large numbers. Security experts have repeatedly noted that many fraud networks operate across international borders, making enforcement and disruption efforts more difficult.
Industry data highlights both the scale of telecom intervention and the persistence of the problem. According to CTIA, wireless providers blocked approximately 55 billion spam and scam text messages during 2024 while also flagging or blocking around 45 billion suspected scam calls each year. Yet fraudulent communications continue to bypass filtering systems and reach consumers.
Additional industry estimates suggest the volume remains substantial. Robocall monitoring company YouMail reported that Americans received more than 50 billion robocalls during 2025. Separate data from RoboKiller indicated that spam text traffic exceeded 19 billion messages per month throughout 2024.
Federal Trade Commission statistics further illustrate the role of telecommunications channels in scam activity. The agency's data shows that text messages were among the most commonly reported methods used by scammers to contact victims, while phone calls also ranked near the top of reported contact methods.
Industry representatives argue that telecom providers are actively engaged in combating the problem. Josh Bercu, senior vice president of policy at USTelecom, said companies support scam prevention efforts through call traceback programs, disruption of unlawful activity, and cooperation with law enforcement investigations. He added that addressing fraud requires coordination across multiple industries rather than action from a single sector alone.
At the same time, some telecommunications providers have introduced paid security-focused services, including advanced call-filtering tools and branded caller identification features. These offerings aim to provide customers with additional protection against unwanted communications.
Consumer advocates, however, believe stronger incentives may be necessary to encourage broader action. Eden Iscil of the National Consumers League argued that companies may not implement the fullest possible protections unless greater accountability or financial consequences are attached to failures in consumer protection.
The discussion reflects a larger challenge facing governments, technology companies, and telecom providers worldwide. As scammers adopt increasingly sophisticated tactics and make greater use of automation, artificial intelligence, and stolen personal data, organizations responsible for digital communications face mounting pressure to strengthen detection systems while ensuring legitimate messages continue to reach consumers without disruption.
Ofcom media regulators said none of the company made any serious efforts to make recommendations feeds/explore pages safer, despite proof that these platforms are the main entry point through which underage kids face harm.
Ofcom said the platforms are “not safe enough”. The report comes after Ofcom’s call for stricter action on children’s online safety, saying Roblox, meta, and Snap had each complied to stronger anti-grooming actions.
TikTok said it was quite disappointing that Ofcom didn’t acknowledge its safety measures, whereas Youtube said it worked with child safety researchers to give industry grade, age-appropriate experiences for children.
Ofcom’s latest report explains how five large social media and video platforms responded to its call for safety measures. The report said that, "Notably, TikTok and YouTube failed to commit to any significant changes to reduce harmful content being served to children, maintaining their feeds are already safe for children.” Ofcom added, "Our wealth of evidence, published today, suggests they are still not safe enough."
Responding to the criticism, YouTube and TikTok said that safety measures already existed. YouTube’s short-form video timer allowed parents to control scrolling time for Shorts feed, whereas TikTok stopped direct messaging (DM) for under-16 children.
Governments have taken measures to address online child safety. UK PM Keir Starmer has urged social media platforms to take greater responsibility. Britain is discussing tighter restrictions, this includes a potential ban on under-16 children that use social media, inspired from Australia's landmark decision that tackled addictive design features.
According to social media analyst Matt Navarra, the report has shown a shift in how we perceive online harm as a “product problem.” Earlier, the debate was, “did the platform remove harmful content quickly enough?' - the new one has shifted towards, 'why did the platform show it to a child in the first place?”
Ofcom reported that 73% of 11-17 year olds were exposed to malicious content for four weeks, primarily through recommendation feeds. TikTok was the most cited, followed by YouTube, Instagram and Snapchat. Experts stress that YouTube and TikTok said their existing platforms were adequate, but media regulators have found their feeds to be unsafe.
A cybercrime group known as TeamPCP has been linked to an expanding series of software supply chain attacks that researchers say have affected hundreds of organizations, with GitHub becoming the latest high-profile name connected to the campaign.
GitHub recently disclosed that it had identified thousands of repositories impacted after a developer reportedly installed a compromised extension for Visual Studio Code (VSCode), Microsoft's widely used source-code editor. TeamPCP later claimed on the cybercrime forum BreachForums that it had gained access to roughly 4,000 GitHub repositories and attempted to advertise what it described as GitHub source code and internal organizational data for sale. GitHub stated that it had identified at least 3,800 affected repositories but said its investigation indicated the exposed repositories contained the company's own code rather than customer code.
The incident highlights the growing danger of software supply chain attacks. Unlike traditional intrusions that target a company directly, these operations focus on software that developers trust and use every day. By secretly inserting malicious code into legitimate tools, attackers can potentially reach thousands of downstream users through a single compromise.
Security researchers tracking TeamPCP believe the group has transformed what was once considered an occasional cybersecurity threat into a recurring problem. According to software supply chain security firm Socket, the group has launched around 20 separate attack waves in recent months, embedding malicious code into more than 500 unique software projects. When different compromised versions are counted, that number rises to well over a thousand malicious releases.
Researchers say the group's success stems from a self-reinforcing attack cycle. TeamPCP typically begins by compromising a development environment associated with an open-source project. Malware is then inserted into software packages that are downloaded by other developers. Once installed, the malicious code can steal credentials, authentication tokens, and publishing permissions, allowing attackers to compromise additional software projects and continue spreading through the development ecosystem.
Recent investigations indicate that TeamPCP has increasingly automated this process through a worm known as Mini Shai-Hulud. The malware has been observed creating GitHub repositories containing encrypted credentials stolen from victims while leaving references to Frank Herbert's science-fiction universe Dune. Researchers note that although the name resembles an earlier worm called Shai-Hulud, there is currently no evidence linking TeamPCP to that previous campaign.
GitHub is not the only organization mentioned in connection with the operation. Researchers have previously linked TeamPCP activity to incidents involving OpenAI, Mercor, and several widely used software development projects. During a major expansion of its campaign earlier this year, the group reportedly compromised software and infrastructure associated with Trivy, LiteLLM, Checkmarx, pgserve, TanStack, and Mistral AI. The stolen credentials obtained through those attacks were allegedly used to fuel further compromises.
Security analysts describe credential theft as the group's primary enabler. Long-lived access tokens and poorly managed credentials allow attackers to move from one environment to another with relatively little effort. According to researchers, once a single trusted credential is stolen, it can provide access to additional repositories, cloud resources, and development systems.
The group's activities have also evolved beyond software tampering. Threat intelligence researchers report that TeamPCP has engaged in ransomware deployment, data extortion, and data-sale operations. In April, the group reportedly began adopting elements of a ransomware-as-a-service model through associations with cybercriminal platforms such as BreachForums and DragonForce. Researchers have additionally observed activity involving CanisterWorm, malware that targeted Kubernetes environments and reportedly deployed destructive functionality against selected Iranian targets.
The scale of the campaign has renewed debate over how organizations should safely consume open-source software. Experts recommend strengthening credential management practices, regularly rotating access tokens, limiting permissions wherever possible, and closely monitoring software dependencies. They also advise organizations to avoid automatically installing newly released software updates without first validating their integrity. In some recent cases, security teams detected malicious updates within minutes, but users who relied on automatic updates had already installed the compromised code.
The bigger lesson, researchers say, is that trust alone is no longer sufficient in modern software development. Open-source software remains a cornerstone of the global technology ecosystem, but organizations increasingly need verification processes, update review procedures, and continuous monitoring to reduce the risk posed by rapidly spreading supply chain attacks.