Multiple Social-Engineering Campaigns Abuse Trusted Platforms (Microsoft Teams, Vendor-Signed Email, Bing Ads/Azure)
Security researchers reported several social-engineering campaigns that abuse trusted platforms to increase credibility and bypass controls. One campaign targeted wedding planners and related vendors by hijacking trust in Microsoft Teams: attackers used compromised legitimate email threads and impersonated legal professionals (e.g., czimmerman@craigzlaw[.]com) to lure victims into clicking a fake Teams meeting link that ultimately redirected to ussh[.]life/connect/teamsfinal/9/windows, a site masquerading as a Teams download page. Victims were prompted to download Windows executables consistent with information-stealer behavior (credential/browser/session-token theft and C2 exfiltration), enabling follow-on account takeover and additional phishing.
Separately, a report highlighted DKIM replay-style phishing in which criminals abuse legitimate notification/invoice workflows from PayPal, Apple, and DocuSign to generate cryptographically signed emails that pass DKIM/DMARC checks; attackers place scam content (often a fake support phone number and urgency) into user-controlled fields, send the message to themselves to obtain a “clean” vendor-signed email, then forward it to targets. Another campaign used Bing search ads to funnel users through a newly registered domain (highswit[.]space) to scam pages hosted on Microsoft Azure Blob Storage (consistent path pattern including werrx01USAHTML/index.html and a phone-number parameter), presenting fake Microsoft security warnings and directing victims to call numbers such as 1-866-520-2041 and 1-833-445-4045; Netskope observed impact across dozens of US organizations.
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