Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
135 detections
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Detects the first-seen external Remote Desktop Protocol (RDP) logon event for a specific user and network provider (ASN) within the last 24 hours, compared against a 14-day historical baseline. This can indicate initial access via compromised credentials or RDP exploitation.
This rule detects potential Remote Desktop Protocol (RDP) session hijacking or suspicious automation activity. It monitors for the execution of tscon.exe, a system utility used to control remote desktop sessions, or the usage of mstsc.exe (Remote Desktop Connection) over the standard RDP port 3389, which can be indicative of lateral movement or unauthorized access.
Detects anomalous lateral movement via Remote Desktop Protocol (RDP) by identifying three high-risk patterns: rapid RDP fan-out to multiple destination hosts from a single account, RDP access to sensitive servers from unauthorized source hosts, and RDP sessions followed by the execution of known post-exploitation or credential-theft tooling on the destination host.
Detects a sequence of multiple RDP authentication failures (Event ID 4625, Logon Type 10) from a specific source IP, followed by a successful RDP authentication (Event ID 4624, Logon Type 10) from the same source IP. This pattern indicates a successful credential brute force or password spraying attack against RDP, which is a common initial access vector for ransomware and lateral movement.
This rule detects potential identity-led lateral movement in two scenarios: 1) A single account performing RDP authentications to multiple distinct hosts within a short time frame (RDP Fan-Out), or 2) An RDP login occurring on a host shortly after evidence of LSASS process memory access on that same host, suggesting potential credential theft followed by immediate reuse.
This rule detects a credential-based attack where a single source IP performs multiple failed RDP (LogonType 3/10) attempts against various user accounts, followed by a successful authentication from the same source within an hour. This pattern is indicative of password spraying or brute-forcing followed by successful lateral movement via Remote Desktop.
Detects potential lateral movement by identifying users who have recently had a confirmed infostealer malware infection on a source host and subsequently initiate RDP or WinRM connections from a different host to internal network resources.
Detects a single source IP address attempting to connect to multiple hosts over TCP port 3389 (RDP) within a short timeframe (10 attempts in 60 seconds). This behavior is indicative of a host scanning the network for accessible RDP services, a common precursor to lateral movement or brute force attacks.
This rule detects potential lateral movement via Remote Desktop Protocol (RDP) by identifying a single user account establishing RemoteInteractive (logon type 10) sessions to three or more distinct destination hosts within a 15-minute timeframe. This pattern is indicative of an attacker attempting to traverse a network from a compromised host.
Detects the specific pattern associated with Storm-2570 for enabling Remote Desktop Protocol (RDP) on a target host to facilitate lateral movement. The detection looks for registry modifications to disable RDP denial (fDenyTSConnections=0), firewall rules allowing TCP port 3389 via netsh or PowerShell, and the deployment of these configurations using PsExec against a target host list file.
Detects high-volume RDP X.224 connection requests originating from a single source within a short timeframe, which is a strong indicator of a brute force or password spraying attack targeting Remote Desktop Protocol services.
Detects the execution of 'tscon.exe', a Windows utility used to control Remote Desktop sessions. The rule specifically alerts when 'tscon.exe' is executed with parameters indicative of session hijacking (such as '/dest:') or when it is invoked by suspicious processes or under SYSTEM privileges, which are characteristic of RDP session hijacking techniques used for privilege escalation and lateral movement.
This rule detects potential RDP brute force and password spraying attacks by correlating Windows Event ID 4625 (failed logins) and 4624 (successful logins) via RDP (Logon Type 10). It monitors for high volumes of failed attempts across multiple accounts or high volume of failed attempts from a single source, followed by successful authentication from the same source.
Detects the use of the Windows Terminal Services console tool (tscon.exe) to hijack active or disconnected Remote Desktop sessions. Attackers often execute this with SYSTEM privileges, frequently initiated via service control utilities like sc.exe, schtasks.exe, or services.exe, to gain unauthorized access to user sessions without requiring credentials.
Detects high-frequency failed RDP authentication attempts (Windows Event ID 4625 with LogonType 10) originating from the same source. This pattern is indicative of brute-force or credential guessing attacks against Remote Desktop Services.
Detects network activity characteristic of the CVE-2019-0708 (BlueKeep) Remote Desktop Services exploit, including specific RDP negotiation patterns and subsequent RDP service crashes or resets potentially indicative of a successful or failed exploitation attempt.
Detects potential lateral movement by monitoring user accounts performing interactive RDP logons (LogonType 10) to multiple distinct internal hosts within a 15-minute window. Additionally, identifies RDP logons occurring outside of standard business hours (before 6 AM or after 8 PM), a pattern often associated with human-operated ransomware activity.
Detects anomalous MS_T120 channel binding and MCS handshake patterns characteristic of the BlueKeep (CVE-2019-0708) remote code execution vulnerability in Microsoft RDP services.
Detects anomalous MS_T120 channel binding and MCS handshake patterns characteristic of the BlueKeep (CVE-2019-0708) remote code execution vulnerability in Microsoft RDP services.
Detection rules identifying malformed RDP MCS Connect Initial PDUs and unusual service crashes following RDP connection attempts, both indicative of exploitation attempts against the CVE-2019-0708 (BlueKeep) vulnerability.
Detection rules identifying malformed RDP MCS Connect Initial PDUs and unusual service crashes following RDP connection attempts, both indicative of exploitation attempts against the CVE-2019-0708 (BlueKeep) vulnerability.
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