Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects the creation or modification of inbox rules in Office 365 that exhibit suspicious characteristics, such as external forwarding, automatic deletion/moving of sensitive emails (e.g., security alerts, junk), or rules containing keywords related to fraud. The rule optionally correlates this activity with recent anomalous sign-in attempts by the same user to identify potential account compromise.
Detects potential lateral movement by users who have recently been flagged for credential theft or infostealer activity. The rule correlates initial security alerts with subsequent Windows logon events (RDP, network/WinRM) or SMB share access, identifying users connecting to multiple distinct destinations within a 48-hour window.
Detects the presence of the signed but vulnerable DCRCVDrv.sys kernel driver, which is known to be abused in Bring Your Own Vulnerable Driver (BYOVD) attacks to terminate security processes via an unauthenticated PID-terminate IOCTL.
Detects network activity associated with NetSupport Manager remote access software, specifically monitoring for connections to known malicious domains and infrastructure, as well as recurring beaconing patterns indicative of command-and-control behavior.
Detects instances where a process attempts to delete its own executable file image shortly after being launched. This behavior is often associated with malware attempting to minimize its forensic footprint, such as self-deleting installers or RAT (Remote Access Trojan) components that move to a different location or execute from memory.
Detects a multi-stage loader execution chain, potentially named GHAPPIER, by identifying sequential stages of execution. These stages include initial marker file checks, shell-based command dispatching via curl/wget, renaming and execution of secondary payloads, Node.js-based runtime staging, and the eventual creation of implant artifacts in common paths such as VSCode extensions or hidden directories.
This rule detects unauthorized access, creation, or modification of Git credential files (.git-credentials, .netrc) by processes other than standard Git credential management utilities. It also monitors command-line activity that references these credential stores to identify potential attempts to exfiltrate or manipulate stored credentials.
Detects execution of rundll32.exe with suspicious command-line patterns, including paths containing 'DavWWWRoot' (indicating potential remote file execution/WebDAV abuse), specific malicious DLL function exports, or launching from PowerShell. These techniques are commonly used to execute payloads from remote locations or to bypass traditional security controls.
Detects instances where a Node.js process (node.exe) initiates command-line interpreters (cmd.exe, powershell.exe) with specific arguments or command lines associated with administrative or potentially obfuscated/automated script execution. This is a common pattern for post-exploitation activities or legitimate administrative automation.
This rule detects a sequential multi-stage execution chain starting with msiexec.exe launching a hidden PowerShell script, followed by wscript.exe executing a VBScript agent, and finally node.exe executing a JavaScript file within a short time window. This pattern is indicative of a complex, multi-stage dropper or malware execution flow.
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