Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
6,537 detections
Filters
Last updated
All Time
Detection languages
3,970
998
598
428
233
Contributors
1,363
1,250
1,066
954
384
Categories
2,933
2,196
2,017
1,857
1,411
Platforms
39,936
7,266
6,537
3,866
3,647
Products / Services
4,107
2,418
1,587
270
254
MITRE Techniques
1,450
1,310
1,022
934
696
CVEs
46
46
33
18
12
IDS Classtypes
1,753
458
404
325
220
IDS Protocols
2,202
773
381
300
93
Detects instances where a TFTP service on an OpenCanary honeypot node has received a request. This indicates potential reconnaissance or attempts to interact with a seemingly vulnerable service.
This rule detects HTTP POST login attempts against an OpenCanary honeypot. OpenCanary is a honeypot designed to mimic various services to detect unauthorized access attempts. A 'logtype' of 3001 specifically indicates an HTTP service login attempt via a form POST, suggesting an adversary is trying to gain initial access or credentials by interacting with the emulated service.
Detects instances where a VNC service on an OpenCanary node has had a connection attempt. This indicates an adversary attempting to connect to a VNC service, likely for remote access or reconnaissance.
This rule detects when an OpenCanary honeypot's NTP service receives a 'monlist' request. The 'monlist' command is a deprecated feature in NTP that can be abused for amplification attacks (Network Denial of Service). Detecting this activity on a honeypot indicates an adversary is likely scanning for vulnerable NTP servers or attempting to use the honeypot in an amplification attack.
This rule detects indicators of potential exploitation of CVE-2023-27997, a critical Fortigate SSL VPN vulnerability. It specifically looks for GET or POST requests to '/remote/hostcheck_validate' or '/remote/logincheck' URIs that also contain the 'enc=' parameter in the query string. These patterns are associated with attempts to exploit the vulnerability.
Detects exploitation attempts of the OWASSRF variant targeting Exchange servers. This variant uses the OWA endpoint to access the PowerShell backend endpoint, indicated by specific URI patterns and HTTP methods. The rule filters out common legitimate user agents to reduce false positives.
This rule detects a suspicious sequence of events: a process launching with a low prevalence executable (meaning it's rarely seen in the environment) followed by that same process initiating an HTTP connection to a low prevalence domain (a domain rarely accessed in the environment) within a 10-minute window. This combination can indicate the execution of novel or custom malware attempting to establish command and control or exfiltrate data to an unusual destination.
This rule detects DNS queries for domains that contain a specific string (e.g., a company name) and are not registered with an approved domain registrar. It leverages WHOIS data to identify potentially malicious typosquatting domains that have been recently registered or observed. The rule specifically looks for DNS queries where the domain name matches a defined pattern (e.g., 'threatpunter') and the WHOIS information indicates a registrar other than the approved one ('MarkMonitor Inc.'). Additionally, it checks if the domain was first seen in the environment within the last 30 days, indicating a new or suspicious registration.
This rule detects DNS queries for domains that have a very low rolling maximum prevalence (3 or less over a 10-day period). This can indicate newly registered domains, domains used for command and control, or other suspicious activity that has not yet gained widespread legitimate use. The rule correlates DNS events with derived prevalence data to identify these low-prevalence domains.
Detects exploitation activity of CVE-2023-46747, an unauthenticated remote code execution vulnerability in F5 BIG-IP. The rule looks for specific POST requests to '/mgmt/tm/util/bash' containing keywords related to form submission and user creation within the F5 BIG-IP Traffic Management User Interface (TMUI).
This rule identifies outbound network connections where the destination IP address is geo-located to a specific country, which is configured as 'France' in this instance. It can be adapted to monitor traffic to any country of interest. The rule itself does not specify malicious behavior but flags network communication to a particular geographic region. This could be indicative of potential data exfiltration, command and control (C2) communication, or unauthorized access attempts if the country is considered high-risk or unusual for the organization's normal operations.
Detects potential exploitation attempts of CVE-2023-4966, a Citrix ADC and NetScaler Gateway sensitive information disclosure vulnerability. The rule specifically looks for GET requests to '/oauth/idp/.well-known/openid-configuration' that result in a 200 HTTP status code, indicating a successful attempt to access this specific endpoint which is part of the vulnerability exploitation chain.
Detects exploitation activity targeting CVE-2023-46747, an unauthenticated remote code execution vulnerability in F5 BIG-IP. The rule specifically looks for POST requests to '/mgmt/tm/util/bash' containing hex-encoded or plain text strings related to '/tmui/Control/form' and 'form_page=%2ftmui%2fsystem%2fuser%2fcreate.jsp', which are indicators of the exploit attempting to create a new user.
Detects potential exploitation attempt of CVE-2023-4966, a Citrix ADC and NetScaler Gateway sensitive information disclosure vulnerability, via proxy logs. This vulnerability allows for the disclosure of sensitive information, such as session tokens.
Detects exploitation attempts of CVE-2023-4966, a Citrix ADC and NetScaler Gateway sensitive information disclosure vulnerability. The rule specifically looks for GET requests to '/oauth/idp/.well-known/openid-configuration' with an unusually long 'cs-host' header string, which is characteristic of the exploit.
Detects exploitation attempts of CVE-2023-4966, a Citrix ADC and NetScaler Gateway sensitive information disclosure vulnerability. The detection logic specifically looks for GET requests to '/oauth/idp/.well-known/openid-configuration' with an unusually long host header string (150 characters or more) in proxy logs. This pattern is indicative of the 'Citrix Bleed' exploit.
Detects exploitation attempts of the OWASSRF vulnerability targeting Microsoft Exchange servers using publicly available Proof-of-Concept (POC) code. This exploit leverages the Outlook Web Access (OWA) endpoint to gain access to the PowerShell backend endpoint, indicated by specific URI patterns, HTTP method, user-agent, and a successful HTTP status code.
Detects exploitation attempts of CVE-2023-22518 in Confluence Data Center and Confluence Server. This vulnerability allows an attacker to exploit specific endpoints to potentially create administrator accounts and execute arbitrary commands. The rule identifies POST requests to known vulnerable URIs associated with setup and restore actions, or server information, which are indicative of an exploitation attempt.
Detects exploitation attempts of CVE-2023-46214, a remote code execution (RCE) vulnerability in Splunk Enterprise. The rule specifically looks for patterns associated with known public proof-of-concept (POC) code that leverages insecure XML parsing. It identifies POST requests to specific Splunk API endpoints (`/splunkd/__upload/indexing/preview` or `/api/search/jobs/results`) with particular URI query parameters (`NO_BINARY_CHECK=1`, `input.path=shell.xsl`, `/opt/splunk/var/run/splunk/dispatch/`, `/shell.xsl`) that indicate an attempt to upload and execute a malicious XSL stylesheet.
Domain Prevalence
YARA-L
Detects DNS events querying domains that have a low rolling max prevalence.
Suspicious ASN
YARA-L
Identify network traffic based on a specific ASN
Page 306 of 312