Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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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 steal OAuth access tokens by abusing redirect URIs. It specifically looks for HTTP requests containing both 'access_token=' and 'redirect_uri=' in the URI, which could indicate an attacker trying to capture a legitimate access token by redirecting it to a controlled URI.
This rule detects attempts to gain credential access through web application exploits, specifically looking for HTTP URI requests that contain both 'UNION SELECT' (indicative of SQL injection) and 'password' (suggesting an attempt to extract credential-related information). The detection is case-insensitive.
This rule detects attempts to access secrets stored in Azure Key Vault via its API. It specifically looks for HTTP traffic where the host matches the Azure Key Vault domain pattern '*.vault.azure.net' and the URI contains '/secrets/'. This indicates a potential attempt to retrieve sensitive information.
This rule detects when a KeePass database file (.kdbx) is copied to a server via SMB. This could indicate an attempt to exfiltrate sensitive credential data.
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 attempts to exfiltrate browser password databases over HTTP. It specifically looks for HTTP POST requests containing the string "Login Data" in the client body, which is a common indicator of browser credential theft.
This rule detects the delivery of a macOS Keychain Access tool via HTTP. It specifically looks for the string "SecKeychainFindInternetPassword" within the file data of HTTP traffic flowing from the server to the client. This string is indicative of an application attempting to access or manipulate macOS Keychain passwords, suggesting the presence of malware or a malicious utility designed to extract credentials.
This rule detects the exfiltration of a password store database over HTTP POST. It specifically looks for HTTP POST requests where the URI or content contains the string "passwords" (case-insensitive) and the data size is greater than 1000 bytes. This combination suggests a large file, potentially a database, containing passwords being sent out of the network.
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 automated multi-factor authentication (MFA) push bombing attempts targeting Duo Security's API. It specifically looks for HTTP POST requests to 'api.duosecurity.com' and triggers an alert if 10 such requests are observed from the same source IP within a 30-second window. This behavior is indicative of an attacker repeatedly sending MFA push notifications to a user's device in an attempt to overwhelm them or trick them into approving a fraudulent login.
This rule detects a potential MFA fatigue attack by monitoring repeated HTTP requests to known MFA provider domains (duo.com, okta.com, microsoft.com) containing the string "auth" in the URI. A threshold of 20 requests within 60 seconds from the same destination IP address triggers the alert, indicating an attacker might be repeatedly sending push notifications to a user's device to overwhelm them into accepting an authentication request.
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 when a Kerberos credential cache (ccache) file is copied over SMB. Attackers may attempt to steal Kerberos ccache files to obtain Kerberos tickets, which can then be used for various credential access attacks like 'Pass the Ticket'. The rule specifically looks for the string '.ccache' within SMB traffic on port 445, indicating the transfer of such a file.
This rule detects an AS-REP Roasting attack where pre-authentication is not required. It specifically looks for UDP traffic on port 88 (Kerberos) containing specific byte sequences associated with this attack technique. The rule uses a threshold to prevent excessive alerts from a single source.
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.
Detects the presence of 'search:' or 'search-ms:' URI schemes embedded in inbound emails. These schemes can be abused to force outbound NTLM authentication and leak Net-NTLMv2 hashes via a single link click.
Detects command line execution of 'search:' or 'search-ms:' URI handlers utilizing the 'crumb=location:' parameter pointing to a remote UNC path, which forces outbound NTLM authentication. This technique can be used by adversaries to capture NTLM hashes.
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