Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects a single source IP address initiating Remote Desktop Protocol (Logon Type 10) connections to three or more distinct computer destinations within a 10-minute window. This behavior is indicative of lateral movement or internal network scanning activity.
This rule monitors for RDP connections (Windows Event ID 4624 Logon Type 10) and RDP client launches (mstsc.exe) within an environment. It enriches these events by checking against a baseline of historically observed source-to-destination host pairs. A new or previously unseen connection pair triggers an alert, helping to identify potential lateral movement.
This rule detects the presence and execution of files and scripts associated with the exploitation of CVE-2026-55200, such as harness binaries and proof-of-concept scripts. Additionally, it identifies post-exploitation behavior where common network-related processes (like curl, git, or sshd) spawn suspicious or unexpected child processes, which may indicate successful code execution or lateral movement originating from the compromised service.
This rule detects potential RDP lateral movement by identifying accounts that log on to multiple distinct workstations via RDP (LogonType 10) within a one-hour window, where the workstation name is different from the computer name. A logon chain of more than two distinct computers for the same account and IP address within an hour is flagged as suspicious.
This rule detects potential lateral movement attempts originating from IIS web servers (identified by 'w3wp.exe' as the initiating process) to other internal IP addresses using common lateral movement ports (SMB, RDP, WinRM, SSH). It specifically looks for successful network connections from an IIS server to a private IP address on one of the specified ports, where the remote IP is not the local IP.
This rule detects potential reverse shell command execution by monitoring process creation events (EventID 4688) for specific command-line strings commonly associated with reverse shells. It looks for 'bash -i', '/bin/bash', 'nc -e', and 'powershell -NoP' in the command line.
Detects anomalous, oversized IKEv1 Phase 1 packets targeting Check Point VPN devices, indicative of an exploitation attempt for CVE-2026-50751.
This rule detects device registration activities in Entra ID using the specific AppId associated with the DCL broker, which is commonly leveraged to register unauthorized virtual devices. This registration process is often used by adversaries to facilitate Primary Refresh Token (PRT) acquisition, enabling persistent access or bypassing conditional access controls.
Detects indicators of Device Code Lab's PRT Refresh capability, where an administrator's 'Revoke all sessions' (revokeSignInSessions) action is followed by a prt-refresh backend call that reactivates the attacker's session without new user interaction, bypassing standard OAuth refresh token revocation.
Detects the execution of known exploit harnesses and proof-of-concept scripts related to CVE-2026-55200, a critical pre-authentication heap out-of-bounds write vulnerability in libssh2. The rule monitors for the execution of binaries and Python scripts identified as part of the libpwn exploit toolkit used to trigger the vulnerability.
This rule detects successful outbound SSH (port 22) connections originating from a private IP address on a device to a public IP address. This could indicate unauthorized remote access, data exfiltration, or command and control activity.
Detects the spawning of common command-line or script execution shells (cmd.exe, powershell.exe, wscript.exe, cscript.exe, mshta.exe) by the Windows Remote Management (WinRM) provider host (wsmprovhost.exe). This behavior is often indicative of remote code execution or lateral movement via WinRM.
Detects anomalous device code authentication sessions originating from non-corporate IP addresses using common command-line user agents, which are immediately followed by a device registration event by the same user. This pattern is indicative of OAuth device code phishing, where an attacker tricks a user into authorizing a malicious application to access their account.
Detects anomalous non-interactive OAuth token requests against Microsoft Graph that claim multi-factor authentication (MFA) satisfaction from unmanaged devices. This behavior is indicative of Adversary-in-the-Middle (AiTM) token replay attacks, where captured session tokens are reused by an attacker to bypass authentication controls, consistent with tactics used by threat actors like Storm-2755 (Payroll Pirate).
Detects OAuth consent grants or permission additions in Microsoft Entra ID (Azure AD) audit logs that occur in conjunction with device login flow artifacts. This pattern is indicative of 'ConsentFix' or device code phishing attacks, where users are manipulated into authorizing malicious applications, potentially bypassing MFA requirements by using the device code flow.
Detects malicious activities targeting Cisco Catalyst SD-WAN infrastructure, including connections from known malicious IP addresses (UAT-8616), unauthenticated vManage API access attempts indicative of exploitation (CVE-2026-20182), and anomalous control-plane signaling (OMP/DTLS/NETCONF) from unauthorized external sources.
This rule detects suspicious network connections originating from internal IP addresses to common service ports (DNS, SMB, RDP, WinRM) on remote, non-internal IP addresses. It flags instances where a single process on a device makes 10 or more such connections within an hour, which could indicate reconnaissance, lateral movement, or data exfiltration attempts.
Detects anomalous, oversized IKEv1 Phase 1 packets targeting Check Point VPN devices, indicative of an exploitation attempt for CVE-2026-50751.
This rule detects potential session token theft or replay attacks by identifying non-interactive sign-in events that occur from a different IP or geographic location than the user's most recent successful MFA-authenticated interactive session. It flags cases where a non-interactive token is used within a short timeframe (1 hour) of an interactive session from a different location, which may indicate the exfiltration and subsequent use of session cookies or OAuth tokens.
Detects potential Pass-the-Hash (PtH) activity by identifying NTLM Type 3 logons where the account domain originates from outside the local or known corporate domain. The rule specifically excludes system-related accounts such as ANONYMOUS LOGON, WORKGROUP, and NT AUTHORITY, focusing on attempts to authenticate against internal resources using potentially forged or captured credentials.
Detects network traffic attempting to exploit the SMBv1 vulnerability (CVE-2017-0144), commonly known as EternalBlue. The rule monitors for specific SMB Trans2 SESSION_SETUP packet structures associated with this remote code execution exploit.
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