Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects instances where the Windows COM Surrogate process (dllhost.exe) is executed with a command line argument referencing a .cpl (Control Panel) file. This behavior is indicative of an attempt to proxy malicious code execution via the Control Panel utility, a technique often used to evade application allowlisting.
This rule detects a multi-stage process indicative of Server-Side Request Forgery (SSRF) leveraging Bing's Search-by-Image service. Stage 1 captures browsers submitting arbitrary URLs (via the imgurl= parameter) to Bing. Stage 2 detects subsequent inbound requests to an external, attacker-controlled server originating from Bing's infrastructure, suggesting that Bing performed an unauthorized fetch of a resource and delivered it to the attacker, potentially exfiltrating sensitive data.
This rule detects potential phishing emails originating from the gasparinutrition.com domain. It identifies suspicious email delivery patterns involving the use of Google Workspace relay (gappssmtp.com) combined with DKIM misalignment and DMARC failures, indicating possible domain spoofing or unauthorized relay usage.
This rule detects potential unauthorized remote access activity by correlating the execution or network activity of known remote access tools (Tailscale) or suspicious network patterns (DuckDNS, port 4444) with the subsequent execution or network activity of secondary RAT/remote desktop software (RustDesk, AnyDesk, TeamViewer) on the same host within a 10-minute window. This behavior is indicative of an adversary establishing an initial C2 connection followed by deploying secondary remote access tools for persistent remote control.
Detects anomalous SSH daemon (sshd) activity characterized by the installation or execution of a non-standard sshd binary (often located in /tmp or /var/tmp) or the execution of sshd with suspicious command-line arguments (custom ports or custom configuration files), followed by modifications to the authorized_keys file. This behavior is indicative of unauthorized persistence or backdoor access.
Detects the SearchLeak (CVE-2026-42824) attack chain targeting M365 Copilot. The rule monitors for a three-stage sequence within 1 minute: (1) A user accessing a crafted Enterprise Search URL with an injected prompt in the query string; (2) Evidence of bulk data access (MailItemsAccessed or FileAccessed, 5+ events); and (3) An outbound HTTP request to a Bing image search endpoint containing exfiltrated data encoded within a long (>500 chars) 'imgurl' parameter, indicating a potential SSRF/CSP bypass exfiltration path.
This rule detects the installation, service configuration, and key management activities associated with the OpenSSH server on both Windows and Linux environments. It monitors for commands related to installing OpenSSH capabilities or packages, starting the sshd service, modifying SSH registry keys on Windows, creating or modifying configuration files (sshd_config), and updating authorized_keys files. It also flags inbound network connections to non-standard or default SSH ports originating from external IP ranges.
Detects suspicious use of winget.exe and its associated COM API components (ConfigurationRemotingServer.exe and WindowsPackageManagerServer.exe). The rule monitors for unauthorized child process spawning (e.g., cmd.exe, powershell.exe) by the package manager, execution of manual configuration activation via COM, and use of winget to pull external YAML configurations or non-standard file types, which may indicate software supply chain compromise or abuse of system management tools for payload delivery.
Detects the creation of suspicious, low-prevalence executable files (PE format) in user-writable directories (Temp, AppData, ProgramData) by processes commonly associated with cloud storage and synchronization services (e.g., OneDrive, Dropbox, Chrome, Edge). This activity mimics known TTPs attributed to the OceanLotus (APT32) group, specifically using these processes as hosts for staging or injecting malicious payloads. The rule filters out known legitimate paths for these applications to focus on anomalies.
Detects instances where ConfigurationRemotingServer.exe spawns known living-off-the-land binaries (LOLBINs) or executes binaries from suspicious paths. This behavior is indicative of abuse of the WinGet DSC WindowsProcess resource block to execute arbitrary commands.
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