Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects attempts to enumerate password policy information, specifically the 'pwdHistoryLength' attribute, from a domain controller via an LDAP query. It looks for TCP traffic on port 389 (LDAP) where the client sends a query containing both '(objectClass=domain)' and 'pwdHistoryLength' in a case-insensitive manner.
This rule detects attempts to enumerate domain group membership via LDAP queries. It specifically looks for TCP traffic to port 389 (LDAP) containing the string "(objectClass=group)" in a case-insensitive manner. A threshold is applied to trigger an alert if 10 such queries are observed from the same source within a 30-second window, indicating a potential network scan or reconnaissance activity.
This rule detects attempts to enumerate permission group memberships remotely over the Server Message Block (SMB) protocol, specifically targeting port 445. The detection is based on the presence of the case-insensitive string "NetGroupEnum" within the TCP payload, indicating a network scan or reconnaissance activity aimed at discovering group information.
This rule detects attempts to enumerate network connection tables remotely over SMB (port 445). It specifically looks for the string "NetConnectionEnum" in TCP traffic directed to port 445 on the home network, indicating a potential network discovery activity.
This rule detects attempts to enumerate installed software on a Windows machine via Remote WMI (Windows Management Instrumentation) over SMB (Server Message Block) on port 445. Specifically, it looks for the string "Win32_Product" within TCP traffic destined for port 445, indicating a WMI query for installed products. A threshold of 5 occurrences within 30 seconds from the same source is set to reduce false positives.
This rule detects attempts to enumerate the VMware vSphere virtual machine inventory via the API. It specifically looks for HTTP POST requests to the '/sdk/vimService' URI with 'RetrieveProperties' in the client body, indicating a query for system properties, which can include VM inventory details. The detection is focused on network traffic to port 443 (HTTPS) within the home network.
This rule detects potential lateral movement attempts using alternate authentication material, specifically NTLMSSP, over SMB (port 445). It triggers an alert if five or more NTLMSSP authentications are observed from a single source IP address to the home network within a 30-second window. This behavior can indicate an attacker attempting to authenticate to multiple systems using stolen credentials or hashes.
This rule detects attempts to access physical drives directly over SMB by looking for the string "\\.\PhysicalDrive" in TCP traffic on port 445. This technique can be used by attackers to bypass file system access controls and directly read or write to disk sectors, often as part of defense evasion or data exfiltration.
This rule detects network traffic containing the strings "bcdedit" and "safeboot" over TCP port 445 (SMB). This combination suggests an attempt to remotely configure a system to boot into safe mode, which could be used by an attacker for defense evasion or to facilitate further malicious activities.
This rule detects network traffic containing the string "/..namedfork/rsrc" (case-insensitive) over TCP to port 22 (SSH). This pattern is indicative of an attempt to use macOS resource forks to hide payload data, a technique often employed by malware for defense evasion. The detection specifically targets traffic originating from and destined for the home network, suggesting an internal system attempting to exfiltrate or receive hidden data.
This rule detects attempts to unset the HISTFILE environment variable over a TCP connection to port 22 (SSH). Unsetting HISTFILE is a common technique used by attackers to prevent their commands from being recorded in the shell history, thereby evading detection and forensic analysis. The rule specifically looks for the string "unset HISTFILE" case-insensitively within the TCP stream.
This rule detects network traffic over SMB (port 445) that contains patterns indicative of a payload hidden within an NTFS Alternate Data Stream (ADS). Specifically, it looks for the string ":$DATA" followed by ".exe" (case-insensitive) in the TCP payload, which is a common technique used by malware to conceal executable files within legitimate files.
This rule detects attempts to extract credentials from the Linux /proc filesystem over an SSH connection. Specifically, it looks for network traffic containing "/proc/", "/mem", and "ssh" (case-insensitive) within the same TCP flow to a server on port 22. This combination suggests an attacker might be trying to read sensitive memory regions or files related to SSH processes to dump credentials.
This rule detects attempts to access cached domain credentials via the Windows Registry over the SMB protocol (port 445). It specifically looks for the string "SECURITY\Cache" within TCP traffic directed to the HOME_NET on port 445, indicating a potential credential access attempt.
This rule detects attempts to read the bash history file, typically using the 'cat ~/.bash_history' command, over a TCP connection to port 22 (SSH). This activity is often associated with credential harvesting by an attacker who has gained access to a system and is looking for sensitive information, such as previously entered commands that might contain passwords or other credentials.
This rule detects attempts to access the Windows Credential Manager Vault remotely over TCP port 445 (SMB). It specifically looks for the string "vaultcmd" in the network traffic, which is a command-line utility used to manage credentials in the Credential Manager. This activity could indicate an attacker attempting to extract stored credentials from a compromised system.
This rule detects potential abuse of a Certificate Enrollment Web Service (typically Microsoft's CertEnroll) for forgery attempts. It specifically looks for HTTP requests to the '/certenroll/' URI on port 80 (HTTP) within the home network. A threshold of 10 such requests from a single source IP within 60 seconds is set to trigger the alert, indicating a possible automated or rapid attempt to interact with the certificate enrollment service.
This rule detects network traffic to a specific URI path associated with Active Directory Certificate Services (AD CS) enrollment. The URI '/ADPolicyProvider_CEP_UsernamePassword/service.svc/CEP' is known to be used in Certificate Enrollment Policy (CEP) web services, which can be abused in ESC1 (ESC1 Certificate Template Privilege Escalation) attacks to obtain certificates with elevated privileges. The rule specifically looks for TCP traffic on port 443 (HTTPS) to this URI, indicating an attempt to interact with the CEP service.
This rule detects the exfiltration of Kerberos credential cache (ccache) files over SSH SCP. It specifically looks for the string "KRB5CCNAME" within TCP traffic on port 22 (SSH), indicating the potential transfer of a ccache file, which often contains this environment variable name.
This rule detects network traffic indicative of an 'Evil Twin' access point credential capture portal. It specifically looks for HTTP POST requests where the URI contains both 'wifi' and 'password' (case-insensitive). This pattern suggests a malicious portal designed to trick users into entering their Wi-Fi credentials.
This rule detects network traffic indicative of a compromised host attempting to beacon to a botnet command and control server. Specifically, it looks for HTTP requests where the URI path contains "/gate.php". This pattern is commonly associated with botnet communication.
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