Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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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.
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).
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.
This rule detects penetration testing activity originating from known offensive security distributions like Kali Linux, Parrot Linux, or Pentoo Linux, as identified by Amazon GuardDuty. The detection is based on GuardDuty findings that specifically indicate 'PenTest' activity.
Detects exploitation attempts of CVE-2023-22518 in Confluence Data Center / Confluence Server. This vulnerability allows an attacker to create admin accounts and execute arbitrary commands. The rule specifically looks for suspicious child processes like bash, curl, or wget being spawned by the Confluence Java process.
This rule detects file modifications to ASPX and ASHX files within the root of the 'App_Extensions' directory by the 'ScreenConnect.Service.exe' process. This activity is indicative of exploitation of CVE-2024-1708, a ZipSlip vulnerability in ConnectWise ScreenConnect versions prior to 23.9.8, which allows for path traversal and arbitrary file write.
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 GET requests to '/SetupWizard.aspx/[anythinghere]' that indicate exploitation of the ScreenConnect vulnerability CVE-2024-1709, which is an authentication bypass vulnerability.
This rule detects file modifications to ASPX and ASHX files within the root of the App_Extensions directory, which is indicative of exploitation of CVE-2024-1708, a path traversal vulnerability (ZipSlip) in ConnectWise ScreenConnect versions prior to 23.9.8. The detection relies on Windows Event ID 4663 (File System) with a SACL set on the directory to log successful access attempts.
Detects exploitation attempts of CVE-2023-22518 in Confluence Data Center / Confluence Server, where an attacker can exploit vulnerable endpoints to create admin accounts and execute arbitrary commands. Specifically, this rule looks for suspicious child processes like cmd.exe or powershell.exe being spawned by Tomcat processes associated with Confluence.
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.
Detects exploitation attempts of CVE-2023-22518, an improper authorization vulnerability in Confluence Data Center and Server. Attackers can exploit vulnerable endpoints to create admin accounts or execute arbitrary commands. The rule specifically looks for POST requests to known vulnerable URIs associated with setup and restore functionalities.
Detects GET requests to specific files ('/human2.aspx' or '/_human2.aspx') that are known indicators of exploitation attempts targeting the MOVEit Transfer vulnerability CVE-2023-34362. These requests are typically associated with web shell deployment or interaction after initial compromise.
Detects potential exploitation attempts of an undocumented Windows Server pre-authentication Remote Code Execution (RCE) vulnerability. The rule specifically looks for a new 'svchost.exe' process being created by another 'svchost.exe' process, both running with the '-k DHCPServer' command line argument, and under a Network Service account (covering multiple language settings). This pattern indicates an unusual execution flow that could be indicative of an RCE exploit targeting the DHCP Server service.
Detects the execution of a shell as a sub-process of "rsync" without the expected command line flag "-e" being used. This behavior is commonly associated with attempts to exploit CVE-2024-12084, leading to arbitrary command execution or privilege escalation.
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