Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects suspicious processes (winupdate.exe, windows.exe, svchost.exe, system32.exe) initiating network connections from unusual directories (Downloads, Public, System32) to known cloud storage providers (Amazon AWS, DigitalOcean, Azure Blob Storage) or over port 443. This behavior could indicate data exfiltration, command and control activity, or malware communication.
Detects network connections to known malicious infrastructure domains and IP addresses associated with the Checkmarx supply chain compromise. The compromised KICS images and mcpAddon.js payload use these hardcoded endpoints to exfiltrate stolen credentials and tokens.
https://www.microsoft.com/en-us/security/blog/2026/04/18/crosstenant-helpdesk-impersonation-data-exfiltration-human-operated-intrusion-playbook/
Detects HTTP POST requests destined for specific PHP endpoints (/res.php, /tele.php) frequently used by the BlobPhish campaign to exfiltrate stolen credentials from memory-resident phishing pages.
Detects network requests to known malicious domains associated with the fake RedAlert Android malware campaign used by pro-Iranian actors, acting as a payload host or C2 endpoint.
Detects HTTP POST requests to specific URI paths (res.php, tele.php) commonly associated with BlobPhish credential exfiltration. This rule identifies attempts to send stolen credentials or other sensitive data to attacker-controlled endpoints.
https://github.com/blackarrowsec/redteam-research/tree/master/CVE-2026-33829
Detects instances where Windows screen capture tools (Snipping Tool or Screen Sketch) initiate network connections to external IP addresses on ports commonly associated with Server Message Block (SMB) or Common Internet File System (CIFS). This could indicate an attempt to exfiltrate captured screenshots to an external server.
Detects network connections over FTP (port 21) to specific compromised IP addresses abused by the LucidRook malware. The threat actor utilizes these Taiwanese FTP servers to stage payloads and receive exfiltrated data.
Detects attempts to read raw disk data using mknod or dd, a technique observed in malicious npm packages to bypass permissions and extract secrets.
Detects the execution of the prt-scan supply chain campaign payload by identifying specific hardcoded exfiltration and reconnaissance log markers in command line arguments. These markers include 'PRT_EXFIL', 'PRT_RECON', 'PRT_HARVEST', 'PRT_DELAYED', 'PRT_GIT_AUTH', and 'PRT_LABEL_BYPASS'.
This rule detects the exposure of Kuwaiti Civil ID numbers in various log sources, including process command lines, additional device event fields, and email subjects/sender addresses. A Kuwaiti Civil ID is identified by a 12-digit number starting with 1, 2, or 3.
Detects the use of the curl command-line utility to perform an HTTP POST request uploading a .zip archive. This behavior is characteristic of the exfiltration phase used by macOS malware, such as Miolab Stealer, to silently transfer staged sensitive files and system profiles to a remote command-and-control server.
This rule detects the exposure of Kuwaiti Civil ID numbers in various log sources, including process command lines, additional device event fields, and email subjects/sender addresses. A Kuwaiti Civil ID is identified by a 12-digit number starting with 1, 2, or 3.
Detects high-volume data downloads (AUY) from SAP to a local frontend file, potentially indicating exfiltration.
This rule detects suspicious network communication patterns indicative of command and control (C2) activity by analyzing the jitter (variability) in connection gaps and byte transfer sizes. It identifies connections with a high number of events, a consistent average gap between connections, and low jitter in both connection timing and data transfer sizes (bytes out and bytes in). This pattern can suggest automated, scheduled communication often associated with C2 channels.
Detects emails where the subject line contains a 13-16 digit number, potentially indicating sensitive numerical patterns like a Credit Card. The rule looks for contiguous digits or common dashed/spaced credit card formats and filters out common automated email keywords to reduce false positives.
Detects cleartext network connections using FTP (port 21) or Telnet (port 23) to external IP addresses. This rule specifically filters out internal RFC1918 traffic to focus on public-facing cleartext communications, addressing compliance requirements such as PCI-DSS for strong cryptography over public networks.
Detects emails where the subject line contains a 13-16 digit number, potentially indicating sensitive numerical patterns like a Credit Card. The rule looks for contiguous digits or common dashed/spaced credit card formats and filters out common automated email keywords to reduce false positives.
This rule detects emails that contain keywords related to 'civil id' in English or Arabic and subsequently extract potential Civil ID numbers from the email body. It then validates the extracted numbers based on birth month and day, and categorizes the risk level based on sender's domain and attachment count. This could indicate data exfiltration or sensitive information exposure.
This rule detects potential exposure of Payment Card Industry (PCI) data, specifically Payment Account Numbers (PANs), within network traffic. It looks for keywords related to payment information (e.g., 'post', 'put', 'payment', 'card', 'ccnum', 'account number') in conjunction with sequences of 13 to 19 digits that resemble PANs. The rule attempts to filter out masked PANs (e.g., those containing '****' or 'xxxx'). This could indicate sensitive data being transmitted insecurely or logged inappropriately.
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