Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects the simultaneous activation of three or more distinct browser profiles on the same device within a one-hour window. This behavior is used as a proxy for browser session hijacking or 'browser sync' attacks, where an adversary bridges a compromised personal identity into a managed corporate browser environment.
Detects the simultaneous activation of three or more distinct browser profiles on the same device within a one-hour window. This behavior is used as a proxy for browser session hijacking or 'browser sync' attacks, where an adversary bridges a compromised personal identity into a managed corporate browser environment.
Detects the simultaneous activation of three or more distinct browser profiles on the same device within a one-hour window. This behavior is used as a proxy for browser session hijacking or 'browser sync' attacks, where an adversary bridges a compromised personal identity into a managed corporate browser environment.
Detects potential session hijacking where an Entra ID session is reused by a non-managed/non-compliant device from a different IP and country shortly after an initial authentication from a managed device. This pattern is consistent with infostealer malware stealing session tokens and replaying them on attacker-controlled infrastructure to bypass MFA.
Detects potential session hijacking where an Entra ID session is reused by a non-managed/non-compliant device from a different IP and country shortly after an initial authentication from a managed device. This pattern is consistent with infostealer malware stealing session tokens and replaying them on attacker-controlled infrastructure to bypass MFA.
Detects anomalous device-authorization-grant (RFC 8628) activity indicative of device-code phishing attacks (e.g., Tycoon2FA). The rule identifies user accounts exhibiting a rapid succession of 'authorization_pending' (70016) status polling attempts followed by a successful token issuance (0), constrained to a short time window and excluding known first-party Microsoft CLI/dev-tool applications.
Detects anomalous device-authorization-grant (RFC 8628) activity indicative of device-code phishing attacks (e.g., Tycoon2FA). The rule identifies user accounts exhibiting a rapid succession of 'authorization_pending' (70016) status polling attempts followed by a successful token issuance (0), constrained to a short time window and excluding known first-party Microsoft CLI/dev-tool applications.
Detects anomalous device-authorization-grant (RFC 8628) activity indicative of device-code phishing attacks (e.g., Tycoon2FA). The rule identifies user accounts exhibiting a rapid succession of 'authorization_pending' (70016) status polling attempts followed by a successful token issuance (0), constrained to a short time window and excluding known first-party Microsoft CLI/dev-tool applications.
Detects network traffic associated with Adversary-in-the-Middle (AiTM) phishing kits that impersonate Microsoft and Google login pages. The rules identify the presence of specific HTML elements (like Cloudflare Turnstile anti-bot gates) and authentication session cookie headers served from non-authorized/non-official domains, indicating a reverse-proxy phishing attack.
Detects the 'ClickFix' attack pattern where explorer.exe (typically via a Run dialog interaction) spawns a command shell (PowerShell, cmd, or mshta) using obfuscated flags combined with execution indicators (download/execution), which then subsequently spawns a secondary child process. This chain provides high-confidence evidence of malicious intent compared to isolated process executions.
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