Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects potential persistence mechanisms in AWS by monitoring the creation of new IAM users or roles, the issuance of long-lived credentials (access keys or login profiles), or the creation of roles with permissive cross-account trust policies. This rule specifically excludes known legitimate automation roles to reduce noise.
Detects the modification of EBS snapshot or AMI attributes to add createVolumePermission or launchPermission, which enables sharing the resource with an external AWS account. This action is a common precursor to cross-account data exfiltration or extortion via snapshot/AMI hijacking.
Detects high-volume mailbox item access (MailItemsAccessed) within 15-minute intervals, correlated with risky Entra ID sign-in events within a 60-minute window. This behavior is indicative of automated mail reconnaissance or data exfiltration following potential cloud account compromise.
Detects a suspicious sequence of events where a user performs a device-code authentication flow from a previously unseen application, followed within a two-hour window by sensitive account activities such as OAuth application consent/registration or mailbox-related administrative operations. This behavior is characteristic of passkey-phishing campaigns designed to steal access tokens and achieve persistence or data access via malicious OAuth applications.
Detects the assignment of high-privilege Entra ID directory roles (e.g., Global Administrator) to identities that either have a recent risky sign-in history or were created within the last 48 hours. This pattern is indicative of privilege escalation following account compromise or the creation of backdoored accounts by an attacker. Assignments including change management tracking tags are excluded to reduce noise.
Detects activity indicative of the 'ClickFix' social engineering technique, where users are tricked into manually executing obfuscated commands (often from fake CAPTCHA or error prompts) via the Windows Run dialog or command-line interfaces. The rule correlates suspicious process execution (e.g., mshta, powershell, certutil, curl) originating from explorer.exe with the detection of common encoded/obfuscated command line patterns, or interactions with the Windows RunMRU registry key, which logs commands typed into the Run dialog.
This rule detects potentially malicious OAuth application consent grants where a user authorizes an application with high-privilege scopes (such as mail or directory access). The detection flags consent grants for applications that are either unverified by the publisher or newly created within the last 30 days, and correlates these events with suspicious sign-in activity (high/medium risk or failures) for the same user within a two-hour window.
Detects potential reconnaissance or data collection activity within Office 365 Exchange mailboxes. The rule monitors for mailbox access operations (MailItemsAccessed, SearchQueryInitiated, FolderBind, or MessageBind) originating from new or uncommon application IDs, IP addresses, or ASNs for a specific user, or indicates bulk folder enumeration behavior in a short timeframe, which may suggest session token reuse or unauthorized mailbox access.
Detects an anomalous volume of file downloads from cloud storage platforms (SharePoint, OneDrive, Google Drive, Box) occurring within two hours of a high or medium risk sign-in event, including impossible travel or token replay scenarios. This pattern is indicative of potential data exfiltration by an actor using compromised credentials.
Detects a hybrid identity attack sequence where an anomalous or high-risk cloud sign-in (e.g., AD FS, Azure AD Connect) is followed within 24 hours by suspicious on-premise Active Directory activity, specifically DCSync replication requests or Kerberoasting (high volume of TGS requests). This pattern is indicative of an attacker leveraging stolen cloud session tokens to pivot into on-premise infrastructure.
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