Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects suspicious Entra ID (Azure AD) events related to device registration, Primary Refresh Token (PRT) issuance, and account-level flags (such as 'enforceMfa' or broker mode) that are indicative of persistence techniques used in device code phishing campaigns, such as the ARToken platform.
Detects the execution of curl.exe by various script interpreters (cmd.exe, powershell.exe, wscript.exe, mshta.exe) or Windows Explorer. This pattern is commonly used by adversaries to download malicious payloads or intermediate loaders as part of an attack chain, such as deploying CastleLoader/CastleRAT.
Detects the presence of the CastleLoader intermediate loader binary on disk, associated with the SloppyRAT infection chain. The rule identifies specific file content patterns, including hardcoded strings such as 'CastleLoader', 'CastleRAT', specific user-agents, and embedded Python code used for base64/zlib decoding of further payloads.
Detects malicious PHP web shell patterns (e.g., base64_decode, system, eval, passthru) within the WordPress plugins directory. This often indicates the presence of a trojanized plugin update or unauthorized file modification following a supply chain compromise.
Detects high-frequency access to multiple sensitive Microsoft Graph API paths (users, groups, applications, directoryRoles, servicePrincipals, etc.) from a single identity within a short timeframe. This pattern is indicative of automated reconnaissance or enumeration of the cloud environment's identity and application landscape.
Detects high-frequency, diverse access patterns against the Microsoft Graph API, indicative of automated enumeration or discovery of SharePoint, OneDrive, or search resources. The rule monitors for distinct paths (e.g., sites, drives, children) requested by a single actor within a 20-minute window.
This rule monitors Microsoft Teams communications for keywords related to passkey or Single Sign-On (SSO) configuration, which are common themes in social engineering and credential harvesting attacks. It correlates these messages with Windows logon events (Event ID 4624) for the sender to identify potentially compromised accounts or active phishing attempts originating from within the environment.
This rule detects potential privilege escalation to root originating from Acronis backup plugin processes on hosting platforms like cPanel, WHM, and Plesk. It flags cases where a non-root Acronis process spawns a child process with root effective UID or when the process UID itself changes to zero, potentially exploiting vulnerabilities such as CVE-2026-87886. The rule also correlates this behavior with suspicious file permission changes (chmod/chown) on Acronis plugin directories.
This rule identifies sustained, low-volume activity (low-and-slow) against Microsoft 365 services (SharePoint, OneDrive, and Exchange) which may indicate an adversary is using automated methods via the Graph API to collect sensitive files or emails over an extended period. The rule buckets events by user and time, requiring a minimum of three hours of activity with consistent but low-volume interactions to identify potential data collection behavior that avoids traditional volume-based detection thresholds.
Detects the registration of a new MFA authentication method (such as an authenticator app, phone, or software OTP) by a user, specifically flagging cases where the action occurs from an unfamiliar location or device context within 24 hours of a prior sign-in event. This pattern is often associated with post-compromise persistence efforts where attackers register their own MFA devices to maintain access to a compromised account.
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