Investigating Payroll Pirate Attacks on US Universities
🔍 Microsoft Threat Intelligence observed a financially motivated actor tracked as Storm-2657 conducting targeted 'payroll pirate' intrusions against US universities to divert salary payments. The actor used realistic phishing and adversary-in-the-middle (AiTM) links to harvest credentials and MFA codes, gained access to Exchange Online, abused SSO to reach Workday profiles, and created inbox rules to hide payroll notifications. Microsoft recommends adopting phishing-resistant, passwordless MFA and provides detections and remediation guidance.
