Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects multiple FTP login failures ('530 Login incorrect') from a single source IP address within a short time window, indicating a potential brute force or password guessing attempt against an FTP service.
This rule detects HTTP POST requests containing a Content-Length header value indicating a body size exceeding 10MB. Large POST requests may indicate data exfiltration, large file uploads, or misuse of HTTP channels for data transfer to external destinations.
This rule detects network traffic indicative of the NjRAT (Bladabindi) remote access trojan, specifically identifying its pipe-delimited command-and-control protocol patterns (e.g., '|ll|' or '|kl|').
Detects network traffic containing 'Active Setup', 'Installed Components', and 'StubPath' strings, which are indicative of a potential attempt to reference or trigger a malicious StubPath registry key for persistence.
Detects network traffic attempting to modify SSH authorized_keys or the sshd_config file using SCP or SFTP protocols, which is a common technique used by attackers to maintain persistence on compromised systems.
Detects anomalous SMB traffic indicating potential ransomware activity. The rule monitors for file operations associated with known ransomware naming conventions (e.g., README.txt, DECRYPT_INSTRUCTIONS) or common ransomware-related extensions. It uses a threshold to identify high-frequency occurrences within a short timeframe, suggesting bulk file renaming or ransom note creation typical of encryption phases.
This rule detects suspicious SMB traffic targeting raw disk volumes (e.g., PhysicalDrive, C:) or sensitive Windows files such as NTDS.dit and SYSTEM hive files. This behavior is indicative of credential dumping attempts, often performed using tools like secretsdump.py or Invoke-NinjaCopy, which bypass standard file system access controls to exfiltrate critical system credentials.
Detects network traffic attempting to access sensitive Windows Registry keys (SAM, SECURITY, LSA Secrets, winlogon DefaultPassword) over the SMB protocol, which is indicative of credential harvesting activities.
Detects HTTP GET requests to a specific self-hosted GitLab domain 'gitlab.bzctoons.net' that attempt to download a file named 'protected.zip', which is associated with the retrieval of StealC information-stealing malware by the Amadey loader.
Detects HTTP traffic patterns associated with LokiBot malware beaconing to a hardcoded command and control (C2) endpoint. The rule specifically looks for established network connections to identified malicious domains or IP addresses using the /fre.php URI path.
Detects instances of FTP transfer mode switching (ASCII/Binary) by monitoring network events for FTP traffic on port 21 and specific commands like 'TYPE A' or 'TYPE I' in the RemoteUrl. This behavior can be indicative of data transfer activities, potentially related to vulnerabilities or malicious data exfiltration.
Detects instances of FTP transfer mode switching (ASCII/Binary) by monitoring network events for FTP traffic on port 21 and specific commands like 'TYPE A' or 'TYPE I' in the RemoteUrl. This behavior can be indicative of data transfer activities, potentially related to vulnerabilities or malicious data exfiltration.
This rule detects outbound network traffic from internal hosts to a known malicious IP address (193.242.184.150) over port 22 (SSH). This behavior is indicative of a reverse SSH tunnel established for C2 communication and the potential exposure of internal RDP services to the attacker.
This rule detects outgoing HTTP POST requests that contain a payload matching the signature of Ousaban malware's custom XOR-encoded command-and-control (C2) traffic, characterized by a specific hexadecimal structure.
This rule monitors DNS traffic for queries to the domain 'chongdaotang.net', which is associated with a phishing campaign leveraging legal threat lures to harvest credentials. Detecting these queries indicates that a host in the network is attempting to resolve a domain used in a known credential harvesting attack.
Detects DNS TXT queries for the domain '_axiom-config.m100.cloud', which is associated with fileless payload retrieval techniques.
Detects HTTP response bodies containing specific strings associated with the 'Montana Empire' phishing kit. This rule monitors for indicators that a web server is serving a phishing credential harvesting page.
Detects outbound HTTPS traffic from a web server to api.telegram.org. This pattern is indicative of the Montana Empire phishing kit using the Telegram Bot API for command and control (C2) communication, allowing the adversary to exfiltrate stolen data or receive instructions.
PlugX NetworkIOC
YARA
Modular remote access trojan associated with long-term espionage intrusions
Infostealer distributed via fake open-source tool impersonation sites
Loader used in click-hijacking traffic distribution scheme
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