Arnold Chan
@slazTrusted contributorCompletionist
2 followers2,100 downloads4,386 copies51 likes26,184 views
7,555 detections
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Detects anomalous non-interactive sign-ins that bypass multi-factor authentication (MFA) requirements from a geographical location not previously seen in the user's historical sign-in baseline. This pattern is indicative of attackers using stolen OAuth access or refresh tokens to maintain persistence and bypass standard authentication controls.
Detects anomalous activity associated with OAuth 2.0 device code phishing campaigns. The rule identifies accounts showing frequent device code authentication attempts, including successful logins from potentially unmanaged or unrecognized devices, which is consistent with the behavior of phishing kits targeting OAuth device grant flows.
Detects anomalous activity associated with OAuth 2.0 device code phishing campaigns. The rule identifies accounts showing frequent device code authentication attempts, including successful logins from potentially unmanaged or unrecognized devices, which is consistent with the behavior of phishing kits targeting OAuth device grant flows.
Detects anomalous activity associated with OAuth 2.0 device code phishing campaigns. The rule identifies accounts showing frequent device code authentication attempts, including successful logins from potentially unmanaged or unrecognized devices, which is consistent with the behavior of phishing kits targeting OAuth device grant flows.
This rule detects potential credential or token theft attempts from the N0va phishing kit. It monitors for emails lacking attachments that contain specific URL patterns associated with verification or session initialization, coupled with social engineering tactics such as spoofing legitimate service display names or subjects (e.g., Microsoft Teams, DocuSign, etc.) while originating from non-legitimate domains.
This rule detects potential credential or token theft attempts from the N0va phishing kit. It monitors for emails lacking attachments that contain specific URL patterns associated with verification or session initialization, coupled with social engineering tactics such as spoofing legitimate service display names or subjects (e.g., Microsoft Teams, DocuSign, etc.) while originating from non-legitimate domains.
Detects potential N0va-style phishing or token-exchange abuse where a user completes a device-code authentication flow, followed immediately by an access token usage from a different IP address or device. This sequence indicates an adversary has captured the resulting token/session and is attempting to bypass multi-factor authentication (MFA) to gain unauthorized access to cloud resources.
Detects potential N0va-style phishing or token-exchange abuse where a user completes a device-code authentication flow, followed immediately by an access token usage from a different IP address or device. This sequence indicates an adversary has captured the resulting token/session and is attempting to bypass multi-factor authentication (MFA) to gain unauthorized access to cloud resources.
This rule detects phishing emails where the sender's display name impersonates well-known brands (e.g., Microsoft, DocuSign, Zoom) while using a non-official domain. It further correlates these suspicious senders with embedded URLs that either match the targeted brands' domains or contain patterns commonly associated with device code phishing or API verification workflows.
This rule detects phishing emails where the sender's display name impersonates well-known brands (e.g., Microsoft, DocuSign, Zoom) while using a non-official domain. It further correlates these suspicious senders with embedded URLs that either match the targeted brands' domains or contain patterns commonly associated with device code phishing or API verification workflows.
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