Threats Tagged 'adversary-in-the-middle'

Mirage2FA is an active phishing-as-a-service toolkit built to steal Microsoft 365 credentials and authenticated sessions through Adversary-in-the-Middle attacks. Analysis shows 63.7% of identified victims are in the US, with Technology, Manufacturing, and Education among the most targeted industries. The operation generated thousands of compromise events between 2024 and 2026, including stolen session cookies, passwords, and SSO access. Once a Microsoft 365 session is hijacked, attackers gain access to corporate email, sensitive data, and trusted business accounts. The toolkit uses browser-based delivery through .htm, .xhtml, and .svg stagers, QR codes, JavaScript obfuscation, and WebSocket-based AiTM activity. Of 9,426 unique targeted email addresses, 4,532 were potentially compromised, representing approximately 48% success rate.

MediumCampaignUnited StatesBritish Indian Ocean TerritoryCanada+4#microsoft 365#websocket#adversary-in-the-middle

UNC6671 continues conducting data theft extortion operations despite the alleged retirement of the BlackFile brand in May 2026. The threat actor has diversified across multiple extortion fronts including Redact, Pink, Helix, and Falcon. They employ voice phishing tactics, posing as IT helpdesk staff to contact employees on personal mobile devices, directing them to spoofed login portals with Adversary-in-the-Middle infrastructure that intercepts credentials and multi-factor authentication tokens. Once access is established, automated scripts exfiltrate data from enterprise cloud environments including Microsoft 365 and Okta. Infrastructure analysis reveals shared phishing panels, overlapping victim targeting, and connected domains across all brands. Recent targeting has evolved toward financial services, private equity, legal, and professional services sectors. Between January and May 2026, Bitcoin wallet analysis showed approximately $10.69 million USD in ransom payments, with demands typically ranging fr...

During Q2 2026, Microsoft detected approximately 7.6 billion email-based phishing threats, with monthly volumes declining from 2.7 billion in April to 2.4 billion in June. The quarter was significantly shaped by the downstream effects of Microsoft's Digital Crimes Unit disruption of the Tycoon2FA phishing-as-a-service platform in March, resulting in a 92% decline in associated phishing volume. QR code phishing attacks peaked at 18.7 monthly attacks in March before declining 48% by June, while CAPTCHA-gated phishing fell 81% from its March high. Credential phishing remained the dominant objective, accounting for 94-96% of all payload-based attacks. Business email compromise activity returned to historical norms after an anomalous April surge. Microsoft Teams-based threats grew substantially, with weekly malicious call attempts reaching nearly ten times the mid-2025 baseline by quarter end.

Threat actors are increasingly leveraging the global interest in artificial intelligence by impersonating popular AI platforms such as ChatGPT, Copilot, DeepSeek, and Claude in social engineering campaigns. These operations span phishing attacks, malvertising, and search engine optimization-driven tactics that ultimately lead to credential theft, financial fraud, or malware infections. Observed campaigns include ChatGPT-themed phishing collecting credit card data targeting South Africa, Claude-themed adversary-in-the-middle attacks harvesting credentials and access tokens, malvertising campaigns distributing Vidar stealer through fake AI plugin downloads, and fraudulent DeepSeek V4 installers on GitHub. The initial access broker Storm-3075 has been identified employing AI-themed malvertising, while the financially motivated actor Fox Tempest provides malware-signing-as-a-service to enhance payload legitimacy. These campaigns combine traditional social engineering tactics with AI branding to improve success...

Security researchers gained direct access to Doko's Panel, a real-time phishing platform used in criminal campaigns by ShinyHunters and BlackFile groups. The investigation revealed four distinct infrastructure clusters operating independently customized variants of the tooling. Attacks combine voice phishing with adversary-in-the-middle techniques targeting enterprise identity providers like Okta, Microsoft, and Google, as well as cryptocurrency exchanges. Operators call victims impersonating IT helpdesk staff, directing them to combosquatted domains where credentials and MFA tokens are manually relayed in real-time. Confirmed breaches include SoundCloud (30M records), Match Group (10M records), Betterment (20M records), and Crunchbase. Over 400 domains have been identified linked to these operations. Evidence shows extensive use of AI language models in developing phishing infrastructure, with operators leveraging legitimate services to rapidly deploy and rotate attack infrastructure.

Tycoon2FA emerged as a prominent phishing-as-a-service platform in August 2023, enabling large-scale campaigns targeting over 500,000 organizations monthly. Developed by Storm-1747, it provided adversary-in-the-middle capabilities to bypass multifactor authentication. The kit allowed impersonation of trusted brands like Microsoft 365 and Gmail, intercepting session cookies and credentials. It employed sophisticated evasion techniques including anti-bot screening, browser fingerprinting, and custom CAPTCHAs. Tycoon2FA's infrastructure evolved to use diverse, short-lived domains and complex redirect chains. Its success stemmed from closely mimicking legitimate authentication processes while covertly intercepting user credentials and session tokens.

MediumMalwareUnited StatesUnited KingdomGermany+10#session token interception#evasion techniques#credential theft

A sophisticated adversary-in-the-middle phishing campaign targets Microsoft 365 and Okta users by exploiting single sign-on (SSO) flows. Attackers use lookalike domains and malicious JavaScript injections to steal credentials and session tokens, bypassing multi-factor authentication. Initial access is gained through phishing emails themed around compensation and benefits, sent via compromised mailboxes and Amazon SES. The phishing infrastructure is hosted on Cloudflare, enhancing resilience and evasion. This campaign specifically targets organizations relying on Okta as an identity provider for Microsoft 365, enabling session hijacking and credential theft. The threat poses a medium severity risk due to its complexity and potential impact on confidentiality and integrity. European organizations using these platforms are at risk, especially in countries with high adoption of Microsoft 365 and Okta. Mitigation requires targeted user training, domain monitoring, and enhanced detection of anomalous authentication flows. No CVSS score is available; however, the threat is assessed as high severity given the bypass of MFA and session hijacking capabilities.

MediumCampaignGermanyFranceNetherlands+4#phishing#adversary-in-the-middle#microsoft 365

China-aligned threat actor PlushDaemon has been conducting espionage operations since 2018, targeting entities in China, Taiwan, Hong Kong, Cambodia, South Korea, the United States, and New Zealand. The group employs a custom backdoor called SlowStepper and uses a network implant named EdgeStepper to hijack legitimate updates. EdgeStepper redirects DNS queries to a malicious node, rerouting traffic from legitimate infrastructure to attacker-controlled servers. The group has also exploited web server vulnerabilities and performed a supply-chain attack. PlushDaemon's adversary-in-the-middle technique involves compromising network devices, deploying EdgeStepper, and using it to redirect DNS queries for software updates to malicious nodes. This allows them to serve malicious updates containing the LittleDaemon downloader, which then deploys the SlowStepper implant.

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TheWizards, a China-aligned threat actor, employs Spellbinder, a lateral movement tool that enables adversary-in-the-middle attacks through IPv6 SLAAC spoofing. This technique allows the group to intercept network traffic and redirect legitimate Chinese software updates to malicious servers. The attackers deploy their custom backdoor, WizardNet, which can load additional modules and gather system information. TheWizards targets individuals, gambling companies, and other entities in several Asian countries and the UAE. The group is linked to Sichuan Dianke Network Security Technology Co., Ltd. (UPSEC), known for supplying malware to other threat actors. TheWizards' sophisticated toolset and tactics demonstrate their advanced capabilities in compromising networks and evading detection.

MediumMalwareGermanyFranceNetherlands+7#spellbinder#lateral movement#darknights

TheWizards, a China-aligned APT group, employs Spellbinder, a lateral movement tool for adversary-in-the-middle attacks through IPv6 SLAAC spoofing. This technique allows them to intercept network traffic and redirect legitimate Chinese software updates to malicious servers. The group targets individuals, gambling companies, and entities in Southeast Asia, UAE, China, and Hong Kong. Their malware chain includes the WizardNet backdoor and utilizes DNS hijacking to deliver malicious updates. Evidence links TheWizards to Sichuan Dianke Network Security Technology Co., Ltd. (UPSEC), suggesting it may be a digital quartermaster for this APT group. The attackers use sophisticated tools and techniques to evade detection and maintain persistence on compromised systems.

MediumCampaignGermanyFranceNetherlands+4#software update hijacking#wizardnet#spellbinder