Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects potential privilege escalation exploiting a dangling COM object registration (CLSID {E9F83CF2-E0C0-4CA7-AF01-E90C70BEF496}). It monitors for a non-SYSTEM user creating a DLL within the 'CrossDevice' ProgramData folder, followed by a scheduled task trigger, and subsequently detects 'dllhost.exe' running as SYSTEM loading that specific malicious DLL, indicating successful execution of unauthorized code with elevated privileges.
This rule monitors process creation, file system activity, and HTTP logs for indicators associated with the 'GHOST-VAULT' or 'GHOST-CRED' threat activity. It specifically triggers on files or paths containing 'GHOST-VAULT-', processes named 'ghost_' or containing 'ghost_' in the command line, and HTTP requests containing 'GHOST-CRED/3.0', 'GHOST-VAULT/', or 'GHOST/0day'.
Detects the malicious OIC_Invitation_General_Official.lnk sample used as the entrypoint for PlugX infection chain
Detects the malicious OIC_Invitation_General_Official.lnk sample used as the entrypoint for PlugX infection chain
Detects the presence or execution of a specific file hash associated with a known malicious campaign (KREMLIN/REF9334) that leverages a signed SentinelOne binary. This indicates potential abuse of trusted code-signing to bypass security controls.
Detects high-volume file/directory enumeration behavior by the PlugX side-loaded process GRrte.exe, consistent with PlugX's use of FindFirstFileW/FindNextFileW/FindFirstFileExW for file and directory discovery (T1083).
Detects instances where the process 'GRrte.exe' forcefully terminates 'iediagcmd.exe' using taskkill.exe. This activity is indicative of an attempt to disable or impair specific security diagnostic tools or EDR-related components on the host.
Detects instances where browser extensions, potentially AI-assisted (e.g., Claude, Gemini), trigger automated mail actions (send, forward, summarize) to non-standard, external domains. This behavior may indicate an unauthorized agent attempting to exfiltrate or manipulate email content.
This rule monitors for network connections to Telegram-related domains (t.me, telegra.ph, teleg.run) initiated by processes other than standard web browsers. This behavior is frequently associated with malware or adversary tools utilizing the Telegram API for command and control (C2) or data exfiltration, as it bypasses legitimate browser usage.
Detects non-browser processes performing file operations (create, modify, rename) on known web browser credential storage, configuration files, and cryptocurrency wallet artifacts in a short duration. This behavior is indicative of credential harvesting or information stealing activity often associated with malware like Vidar, which stages these sensitive files for exfiltration.
Detects the use of certutil.exe to add a certificate to the root store. Adversaries may perform this action to establish persistence or facilitate interception of encrypted traffic by adding a malicious CA certificate to the trusted root store.
Detects Adobe Acrobat (Acrobat.exe) launched by a suspicious parent process (GRrte.exe) while opening a specific PDF document from the user's temporary directory. This pattern is indicative of a potential malicious document lure often associated with malware delivery.
Detects incoming HTTP requests to Microsoft Exchange servers that match patterns indicative of exploitation attempts for the ProxyLogon SSRF vulnerability (CVE-2021-26855). This includes detecting specific manipulation of the Autodiscover service and the injection of X-BEResource or X-AnonResource-Backend headers, which were commonly used during the initial access phase of this campaign.
This rule detects HTTP GET requests resulting in the download of an Android Package (.apk) file where the host is not a known official Google Play or reputable third-party application distribution source. It further validates the detection by inspecting the HTTP response headers for the specific Android application package MIME type and the response body for indicators commonly associated with fake branded application portals.
PetitPotam NTLM Coercion via EFSRPC
Cortex XDR
This rule detects the use of EfsRpcOpenFileRaw (opnum 0) against the EFSRPC interface. This specific function is abused by the PetitPotam exploit to coerce a Windows machine, typically a domain controller, into authenticating to an attacker-controlled host via NTLM. This forced authentication is a precursor to NTLM relay attacks such as those targeting Active Directory Certificate Services (AD CS).
Detects potential ClickFix-style social engineering attacks where a victim is prompted to execute an encoded PowerShell command (often via copy-paste into a terminal). The rule specifically monitors PowerShell processes initiated by shell environments (explorer.exe, cmd.exe, or WindowsTerminal.exe) that execute encoded, hidden scripts to perform multiple suspicious network requests for files (e.g., .zip, .enc, .bin) from non-standard domains.
Detects web requests to 'wp-admin/theme-install.php' containing suspicious query parameters that indicate an attempt to force an unauthenticated theme installation via a Cross-Site Request Forgery (CSRF) exploit (Click2Shell). The rule identifies requests with malicious payloads in the 'theme' parameter, specifically looking for indicators that attempt to bypass CSRF protections when originating from an external site or a non-admin session context.
This rule detects potential web shell activity by identifying instances where a web server process creates or modifies a PHP file within a 'wp-content/themes' directory, followed closely (within 15 minutes) by that same web server process spawning a shell process (e.g., sh, bash, cmd.exe).
This rule detects potential web shell activity by identifying instances where a web server process creates or modifies a PHP file within a 'wp-content/themes' directory, followed closely (within 15 minutes) by that same web server process spawning a shell process (e.g., sh, bash, cmd.exe).
Detects a specifically malformed IPv6 Routing Header (type 0) with a 'segments_left' value of 255 preceding an Authentication Header (AH). This signature targets an exploit pattern known as 'DirtyAH6', which aims to trigger a remote kernel crash or potential remote code execution on vulnerable systems by manipulating IPv6 header processing.
This rule detects processes accessing sensitive credential, configuration, or environment files typically stored in locations like .aws, .ssh, .kube, or application user directories. It alerts when a non-standard or unexpected process touches multiple sensitive folders, or when specific suspicious process names or known malicious tools (such as 'NeedleStealer') are observed interacting with these files. This is indicative of potential credential harvesting or reconnaissance activities.
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