Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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This rule detects modifications to AWS CloudTrail configurations that reduce logging visibility, such as stopping the logging service, deleting a trail, or updating a trail to include restrictive event selectors (e.g., non-multi-region, read-only events, or excluding management events). These actions are indicative of an attacker attempting to evade detection by limiting the audit trail available to security analysts.
Detects modifications to Google Cloud Storage bucket IAM policies that grant access to 'allUsers' or 'allAuthenticatedUsers'. This activity indicates a potential misconfiguration or an attempt by an attacker to stage or exfiltrate data by making bucket contents publicly accessible.
Detects instances where an IAM user or role attempts to assume a role in a different AWS account (Cross-Account) without providing a valid ExternalID. This often indicates unauthorized attempts to access or abuse cross-account trust relationships, which is a common technique for lateral movement or privilege escalation in cloud environments.
Detects unauthorized processes attempting to read or create sensitive browser credential files ('Login Data', 'Web Data', 'Cookies', 'logins.json', 'key4.db'). This activity is commonly associated with information-stealing malware (such as Lumma, StealC, Vidar, RedLine, and Amadey) that targets browser databases to extract stored secrets, often bypassing standard browser process access.
Detects successful sign-in events in Entra ID where MFA is marked as satisfied, but no interactive MFA challenge (e.g., Push, FIDO2, SMS) was recorded as completed in the authentication details. This behavior, when correlated with a new IP, device, or user-agent relative to a 30-day baseline, is highly indicative of session token replay or AitM (Adversary-in-the-Middle) attacks attempting to bypass MFA requirements.
Detects unauthorized processes attempting to read or create sensitive browser credential files ('Login Data', 'Web Data', 'Cookies', 'logins.json', 'key4.db'). This activity is commonly associated with information-stealing malware (such as Lumma, StealC, Vidar, RedLine, and Amadey) that targets browser databases to extract stored secrets, often bypassing standard browser process access.
This rule detects scenarios where a user account grants high-privilege permissions (e.g., mail access or file modification) to an OAuth application within a short time frame (2 hours) following a sign-in event flagged as risky by Entra ID (Azure AD). This pattern is indicative of an adversary abusing OAuth consent flows as a persistence and credential-access mechanism following account compromise.
Detects mailbox permission changes (FullAccess, SendAs) or abnormally high volume of mailbox item access events occurring shortly after a risky, non-interactive, or unusual location sign-in. This pattern indicates a potential follow-on activity from a successful session hijacking or token theft attack.
This rule detects potentially malicious bulk mailbox exfiltration operations (such as New-MailboxExportRequest, New-ComplianceSearch, or Search-Mailbox) performed by an account within 24 hours of experiencing a high or medium-risk sign-in event, suggesting post-compromise data harvesting.
Detects the assignment of high-privilege directory roles (e.g., Global Administrator) to a user account, where the initiator's sign-in session is identified as anomalous. Anomalous indicators include non-interactive sign-in, unknown/untrusted device state, elevated risk score, or activity occurring outside of configured business hours.
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