Threats Tagged 'vishing'

A widespread IT impersonation and voice-phishing campaign designated PREY-0058 is actively targeting Microsoft 365 and SaaS platforms. Threat actors impersonate IT helpdesk staff via phone or text to trick executives and senior personnel into divulging credentials through adversary-in-the-middle phishing portals. After bypassing multi-factor authentication, attackers conduct rapid automated data exfiltration across email, file storage, and cloud repositories without deploying ransomware. The operation relies heavily on NodeMaven residential proxy infrastructure to blend with legitimate traffic. Extortion demands are delivered via TOX messaging within hours of compromise, typically with 72-hour deadlines and threats of public data exposure. The campaign exhibits tradecraft overlapping with UNC6671 and involves multiple extortionware brands including BlackFile, Redact, Pink, and Helix.

Between January and April 2026, the Spring Ring operation conducted coordinated voice phishing campaigns via Microsoft Teams, impersonating IT help desk personnel to target employees across multiple companies. Attackers used social engineering to coerce victims into executing remote monitoring and management tools or custom malware. Advanced variants escalated attacks to NTLM relay techniques targeting domain controllers. Two distinct campaigns were identified: one using RMM tools and obfuscated PowerShell-based RATs, and another leveraging cloud infrastructure with PetitPotam exploitation for domain-level compromise. This campaign highlights the exploitation of trusted collaboration platforms as attack vectors.

AnonyMousKIT is an AI-powered Phishing-as-a-Service platform that targets stolen Apple devices by disabling Activation Lock. It automates credential harvesting via email, SMS, WhatsApp, and AI-driven voice phishing calls, primarily targeting device owners with personalized lures. The platform operates through a decentralized supply chain with hundreds of reseller storefronts and operators, mainly conducting vishing calls to Brazil. Operational logs leaked due to coding vulnerabilities reveal extensive infrastructure and operator details. This campaign monetizes stolen iPhones by bypassing security features through industrialized social engineering.

MediumCampaignUnited StatesAlgeriaArgentina+16#credential harvesting#iphone theft#phishing-as-a-service

Researchers identified an exposed web directory on infrastructure supporting a cryptocurrency fraud operation tracked as Operation ASTERIX. The server contained phone-number datasets, account-validation tools, phishing panels, voice-dialing scripts, and fake wallet applications for Ledger, Trezor, and Exodus. The operator validated approximately 885,000 phone numbers against cryptocurrency exchange accounts, achieving a 13.6% hit rate on German numbers. Victims received coordinated phishing emails and vishing calls referencing fake support cases before being directed to counterfeit wallet applications designed to steal recovery phrases via Telegram exfiltration. Notable findings include extensive use of AI coding assistants throughout development, including GitHub Copilot and Claude Code. When one AI model resisted malicious requests, the operator switched providers and attempted to bypass safety controls using a structured jailbreak prompt targeting the model's reasoning patterns and safety mechanisms.

MediumPhishingUnited StatesBulgariaCanada+3#vishing#electron-malware#account-enumeration

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...

Since January 2026, a threat actor likely functioning as an initial access broker for ransomware operations has been targeting organizations through Microsoft Teams vishing attacks. Attackers impersonate IT helpdesk staff to convince victims to initiate Quick Assist remote sessions. Following initial compromise, PowerShell scripts deploy a Go-based backdoor called GoGRPC, which exists in four distinct variants: Lep, Giver, Pet, and Kind. These variants communicate with command-and-control infrastructure using gRPC over HTTP/2, an uncommon approach that helps blend malicious traffic with legitimate communications. Additional tools observed include BlindDoor backdoor, RevSocket and PyGRPC SOCKS proxies, S3Siphon data exfiltration utility, and RSOX Rust-based proxy relay. Recent campaigns show increased sophistication and selectivity, with heightened focus on corporate environments through enhanced PowerShell scripts capable of antivirus detection, domain controller fingerprinting, and system reconnaissance b...

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.

Helix is a data extortion group conducting multi-target campaigns using vishing, device code phishing, and automated SharePoint data exfiltration. Emerging from the BlackFile and ShinyHunters ecosystem after BlackFile's shutdown in April 2026, Helix uses social engineering to impersonate managers during vishing calls to trigger device code authentication flows. After compromising accounts, the group registers MFA to maintain access, enumerates SharePoint sites with automated tools, and exfiltrates bulk data. Their infrastructure shares hosting with BlackFile and uses geo-matched residential proxies to evade detection. The group varies dwell times to complicate incident response efforts.

Between mid-2025 and mid-2026, threat actors using tradecraft associated with ShinyHunters targeted customer SaaS applications, particularly Salesforce instances, through three primary intrusion paths. Voice phishing campaigns impersonated IT support to trick employees into authorizing malicious OAuth applications. Supply chain compromises leveraged trusted integrations including Salesloft, Gainsight, and Klue to obtain OAuth tokens for downstream customer access. Misconfigured guest access enabled exploitation of Aura framework functionality for unauthorized data queries. These techniques abused legitimate OAuth relationships to inherit user and application privileges, enabling enumeration and exfiltration of CRM data while evading authentication detections. The campaigns targeted multiple industries including retail, education, and manufacturing, highlighting risks in OAuth-connected applications and third-party integrations.

Since April 2026, threat actors operating under O-UNC-066 have deployed a sophisticated vishing campaign targeting Microsoft 365 passkey enrollment. Attackers register domains containing 'passkey' and call victims to convince them to register new passkeys. Victims are directed to operator-controlled phishing kits that mimic Microsoft's enrollment process while attackers simultaneously register their own passkeys in victim accounts. The kit uses real-time polling and adapts to various MFA requirements including TOTP, push notifications, and SMS OTP. Targeted organizations span food and beverage, technology, healthcare, automotive, construction, and aviation industries. The campaign leverages Microsoft's legitimate passkey registration campaigns as a pretext, with primary motivation being data extortion through the Pink data leak site. Infrastructure is hosted on DDoS-Guard and IQWeb FZ-LLC.