Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects potential adversaries leveraging WMI ActiveScriptEventConsumers remotely to move laterally in a network. This event is best correlated and used as an enrichment to determine the potential lateral movement activity.
Detects the creation of a scheduled task in the Windows Registry that is specifically associated with the Diamond Sleet APT group. This activity is linked to their exploitation of the TeamCity CVE-2023-42793 vulnerability, where they create a scheduled task named 'Windows TeamCity Settings User Interface' to establish persistence or execute malicious code.
Detects the use of the "apt" and "apt-get" commands to execute a shell or proxy commands. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
Detects the creation of a scheduled task named '\Windows TeamCity Settings User Interface' with a specific content string 'uTYNkfKxHiZrx3KJ'. This activity has been linked to the Diamond Sleet APT group exploiting the TeamCity CVE-2023-42793 vulnerability for execution, persistence, and privilege escalation.
Detects the creation of a named pipe with the pattern '\coerced\' which is indicative of the hack tool CoercedPotato. This tool is used for privilege escalation by coercing authentication from a target system.
Detects the execution of "Extexport.exe", a utility that is part of the Internet Explorer browser. This utility can be abused for DLL sideloading, specifically by loading "mozcrt19.dll", "mozsqlite3.dll", or "sqlite.dll" if a folder is provided in the command line, or arbitrary DLLs if specific flags are used. This behavior is associated with malware like Astaroth and Guildma.
Detects the execution of "AccCheckConsole.exe" with command-line arguments indicative of its use for UI accessibility checking, which can be abused to load malicious DLLs. This utility allows providing a custom DLL containing a "verification routine" via the command line, enabling an attacker to inject and execute arbitrary code within the context of the legitimate `AccCheckConsole` process.
Detects the creation or update of Active Directory Certificate Services (AD CS) certificate templates that are configured with risky Extended Key Usages (EKUs) and allow the enrollee to supply the subject. This combination can be exploited for privilege escalation and credential access, as described in the 'Certified Pre-Owned' whitepaper, by allowing an attacker to request certificates with arbitrary subject names, potentially impersonating privileged accounts.
This rule detects the creation or update of Active Directory Certificate Services (AD CS) certificate templates that include the 'CT_FLAG_ENROLLEE_SUPPLIES_SUBJECT' flag. This flag allows a user to specify the subject name in a certificate request, which can be abused for privilege escalation or credential access, particularly in scenarios involving misconfigured AD CS environments as described in the 'Certified Pre-Owned' research.
Detects suspicious shell commands commonly used in various exploit codes, including those associated with Apache Struts vulnerabilities and Metasploit framework activities. The rule looks for patterns indicative of downloading and executing scripts, setting up reverse shells, or modifying file permissions for persistence or privilege escalation.
Detects suspicious inbox manipulation rules that are set on a user's mailbox to delete or move messages or folders. This often indicates an attacker is trying to hide their activities or exfiltrate data by automatically moving emails.
This rule detects the use of the OAuth 2.0 device code authentication flow within an environment. While legitimate for input-constrained devices, its presence in other scenarios warrants investigation as it could indicate a misconfigured application or malicious activity. The rule specifically looks for "Device Code" in Azure sign-in logs.
Detects when a role privilege is deleted in Google Workspace. This could indicate an attempt to remove or modify administrative access, potentially as part of a privilege de-escalation by an attacker to avoid detection, or to clean up after an attack.
Detects potential token impersonation and theft on Windows systems. This rule specifically looks for successful logon events (EventID 4624) with a LogonType of 9 (NewCredentials), where the LogonProcessName is 'Advapi' and the AuthenticationPackageName is 'Negotiate', combined with an ImpersonationLevel indicating impersonation. This combination of events is indicative of an attempt to duplicate and impersonate an existing access token, often used for privilege escalation or defense evasion.
This rule detects the use of potentially suspicious keywords within PowerShell scripts that are often associated with exploitation frameworks or advanced attack techniques. Specifically, it looks for reflection-related keywords like 'System.Reflection.Assembly.Load', '[System.Reflection.Assembly]::Load', '[Reflection.Assembly]::Load', 'System.Reflection.AssemblyName', 'Reflection.Emit.AssemblyBuilderAccess', 'Reflection.Emit.CustomAttributeBuilder', and keywords related to interop services and process manipulation such as 'Runtime.InteropServices.UnmanagedType', 'Runtime.InteropServices.DllImportAttribute', 'SuspendThread', and 'rundll32'. These keywords can indicate attempts to load assemblies in-memory, interact with unmanaged code, or manipulate processes, which are common tactics used by malware and red teaming tools.
This rule identifies when an owner is removed from an application or service principal within Azure Active Directory. This activity could indicate an attempt to remove legitimate administrative access or to obscure malicious activity by removing an owner who might detect it.
Detects the exploitation of OMIGOD (CVE-2021-38647) which allows remote execute (RCE) commands as root with just a single unauthenticated HTTP request. Verify successful exploitation by viewing the HTTP client (request) body to see what was passed to the server (using PCAP). Within the client body is where the code execution would occur. Additionally, check the endpoint logs to see if suspicious commands or activity occurred within the timeframe of this HTTP request.
Detects the creation of named pipes that match specific patterns known to be used by Cobalt Strike's Malleable C2 profiles. These patterns are often indicative of Cobalt Strike beacon activity on a system.
This rule detects suspicious sub-processes spawned by common web server processes on Linux systems. It specifically looks for web server processes (Apache, Nginx, Lighttpd, Node, Caddy, Tomcat, WebSphere) executing common system utilities and commands such as 'whoami', 'ifconfig', 'ip', 'uname', 'cat', 'crontab', 'hostname', 'iptables', 'netstat', 'pwd', and 'route'. This behavior is indicative of a web shell being used to execute commands on the compromised server.
Detects process injection using the signed Windows tool "Mavinject" via the "INJECTRUNNING" flag. This activity is suspicious when not initiated by the expected parent process, 'AppVClient.exe'.
Detects when a user account's User Account Control (UAC) flags are modified to enable weak encryption (DES) or disable Kerberos pre-authentication. This configuration can make the account vulnerable to Kerberoasting attacks, where an attacker can request a service ticket for the user and then offline crack the NTLM hash of the user's password if DES encryption is allowed, or if pre-authentication is disabled.
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