Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
116 detections
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Detects instances where an AOMEI-related process initiates an outbound WebDAV-style connection to a public host, followed closely by a Windows WebClient service (svchost.exe) connection to the same remote IP address.
Detects scheduled task creation events where the action uses explorer.exe to access a remote URL or WebDAV resource (such as DavWWWRoot, http://, https://, or SSL paths) or specific threat intelligence IOC hosts. This technique is often used for WebClient priming and forced authentication to capture credentials.
ShadowCoerce NTLM Coercion via FssAgent
Cortex XDR
Detects unauthorized attempts to coerce the File Server VSS Agent (FssAgent) into authenticating to an attacker-controlled host. This is achieved by invoking the IsPathSupported (opnum 8) or IsPathShadowCopied (opnum 9) functions on the FssAgent RPC interface, which can be leveraged to capture NTLM hashes.
Detects Microsoft Outlook initiating outbound SMB or WebDAV network connections to external IP addresses. This behavior is indicative of exploitation of CVE-2023-23397, where a malicious reminder sound or attachment forces the victim's client to authenticate against an attacker-controlled remote share, potentially leaking NTLM hashes.
Detects the execution of known Python scripts (CES_Enroll.py, ntlm_ces_relay.py, ces_negotiate_ntlm.py) often associated with NTLM relay attacks or forced authentication techniques. These scripts leverage Python to interact with authentication protocols or relay requests.
Detects NTLM network logons (LogonType 3 or 9) which often result from a host resolving an attacker-supplied UNC path (e.g., \host
esource) during forced authentication attacks. This rule monitors Windows Security Event ID 4624 to identify incoming NTLM-based network authentication requests, excluding local system logons.
Detects the execution of known Python scripts (CES_Enroll.py, ntlm_ces_relay.py, ces_negotiate_ntlm.py) often associated with NTLM relay attacks or forced authentication techniques. These scripts leverage Python to interact with authentication protocols or relay requests.
Detects the use of the RpcRemoteFindFirstPrinterChangeNotificationEx function (opnum 58) on the Spoolss RPC interface. This function can be abused by attackers to coerce the Print Spooler service into authenticating against an attacker-controlled host via SMB, a technique commonly referred to as 'PrinterBug' or 'SpoolSample'. This authentication can subsequently be relayed to other services (such as AD CS or LDAP) to achieve privilege escalation.
Detects the startup or configuration of the WebClient service, commonly associated with WebDAV redirection, followed within 15 minutes by a process (e.g., control.exe, rundll32.exe, svchost.exe) interacting with a WebDAV-style UNC path. This behavioral pattern is indicative of attackers, such as the Star Blizzard group, abusing built-in Windows functionality to facilitate credential theft or remote file execution via malicious WebDAV shares.
This rule monitors for known suspicious RPC interface and function calls indicative of post-exploitation activities. It specifically targets RPC patterns used for lateral movement (e.g., PsExec, wmiexec, dcomexec), authentication coercion (e.g., PetitPotam, PrinterBug), and credential theft (e.g., DCSync, SAMR enumeration) by filtering on specific interface UUIDs and operation numbers.
Detects anomalous network traffic patterns characteristic of the PetitPotam exploit, specifically targeting the MS-EFSRPC interface on Windows SMB pipes. This behavior is used to force a remote system to initiate authentication to a specified target, facilitating NTLM relay attacks.
Detects the execution of known NTLM relay and coercion tools (such as PetitPotam, EfsPotato, PrinterBug, DFSCoerce, or Coercer) when attempting to coerce a local authentication or credential relay using the local loopback address. These tools leverage various RPC-based techniques to force the local machine to authenticate to an attacker-controlled source, facilitating NTLM relay attacks.
Detects the abuse of the DFS Namespace Management (DFSNM) interface by monitoring calls to NetrDfsAddStdRoot (opnum 12) and NetrDfsRemoveStdRoot (opnum 13). An adversary can trigger these functions to coerce a Windows host to authenticate to an attacker-controlled remote host using NTLM, facilitating NTLM relay attacks.
Detects the execution of known Python scripts (CES_Enroll.py, ntlm_ces_relay.py, ces_negotiate_ntlm.py) often associated with NTLM relay attacks or forced authentication techniques. These scripts leverage Python to interact with authentication protocols or relay requests.
Detects the execution of known Python scripts (CES_Enroll.py, ntlm_ces_relay.py, ces_negotiate_ntlm.py) often associated with NTLM relay attacks or forced authentication techniques. These scripts leverage Python to interact with authentication protocols or relay requests.
Detects DNS-based Kerberos coercion attacks where adversaries inject marshaled credential structures into DNS records to spoof SPNs and redirect authentication such as in CVE-2025-33073. This detection leverages suricata looking for specific CREDENTIAL_TARGET_INFORMATION structures in DNS queries.
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 execution of rundll32.exe with command-line arguments involving 'DavWWWRoot' and external domains ('pf.ch' or 'verification.google'), which is characteristic of attempts to force remote WebDAV authentication or execute malicious code via network-hosted resources.
Detects execution of rundll32.exe with command-line arguments involving 'DavWWWRoot' and external domains ('pf.ch' or 'verification.google'), which is characteristic of attempts to force remote WebDAV authentication or execute malicious code via network-hosted resources.
Detects execution of rundll32.exe with command-line arguments involving 'DavWWWRoot' and external domains ('pf.ch' or 'verification.google'), which is characteristic of attempts to force remote WebDAV authentication or execute malicious code via network-hosted resources.
Detects execution of rundll32.exe with command-line arguments involving 'DavWWWRoot' and external domains ('pf.ch' or 'verification.google'), which is characteristic of attempts to force remote WebDAV authentication or execute malicious code via network-hosted resources.
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