Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the use of sshpass combined with disabled strict host key checking. This pattern matches the propagation scripts used by UNC6240 for rapid lateral movement across internal nodes following Oracle PeopleSoft exploitation.
Detects cloud services being used to move laterally between cloud resources
Detects TeamViewer being used for unauthorized persistent remote access
This rule looks for signs that someone is abusing an older Check Point VPN login method that has known security flaws. Successful abuse can give remote access without proper credentials. Patch and monitor VPN gateways if this appears. Ask the person who used the computer whether they installed new software or clicked a link, and involve your security team if the answer is unclear.
Detects remote PowerShell execution initiated by processes associated with Remcos RAT or Optimax. The rule specifically looks for PowerShell or cmd.exe processes executing commands containing 'IEX', 'Invoke-Expression', 'DownloadString', or a specific IP address (62.102.148.212), where the initiating parent process is identified as 'Remcos' or 'Optimax'. This indicates a potential compromise and execution of malicious code via a known RAT.
Detects the deployment of MeshCentral remote access agents and the creation of a specific ransom note file on compromised PeopleSoft servers, indicative of ShinyHunters activity. The rule looks for the creation of a file named 'README-IF-YOU-SEE-THIS-YOUVE-BEEN-HACKED.TXT' or the execution of 'meshagent' or 'meshcentral' processes from suspicious directories or initiated by common shell/download utilities.
This rule detects suspicious command execution activity originating from RemotePC applications. It identifies instances where 'IDriveRemotePC.exe', 'RemotePC.exe', or 'IDrive.exe' are used to execute commands containing keywords like 'exec', 'execute', 'run', 'invoke', or 'call' at a high frequency (5 or more commands within an hour). This behavior could indicate an adversary using legitimate remote access software for malicious purposes, such as lateral movement or further compromise.
Detects unauthorized GlobalProtect VPN logins from known malicious IPs.
This rule detects an account performing multiple interactive logons (LogonType 2) from at least 3 unique IP addresses within a 5-minute window. This behavior can indicate credential compromise or an adversary attempting to move laterally or access multiple systems using stolen credentials.
Detects the specific ShinyHunters lateral movement pattern involving automated SSH credential spraying using 'sshpass' or rapid SSH connections to multiple hosts with PeopleSoft admin accounts, often after reading '/etc/hosts' for target identification. The rule looks for multiple SSH connections within a 10-minute window from a single host and user, specifically targeting common PeopleSoft-related usernames.
This rule detects a high volume of remote desktop session changes (logon/logoff) for a single user within a one-hour window. Event IDs 4778 and 4779 indicate a session reconnected or disconnected, respectively. A high count (>=10) could suggest suspicious activity such as session hijacking, rapid reconnections by an attacker, or automated tools interacting with remote sessions.
Identifies inbound remote RPC calls for network session enumeration (OpNum 12) via the srvsvc interface. This is often utilized by discovery tools like SharpHound for Active Directory reconnaissance.
Detects VNC connections used for visual remote desktop lateral movement
Detects a remote access utility spawning command shells or script interpreters, indicating hands-on-keyboard activity through an RMM session.
Detects AWS Systems Manager Run Command used for remote code execution on EC2 instances
This detection identifies when an email that contains a URL associated with a known Remote Monitoring and Management (RMM) tool was sent and subsequently clicked by the intended recipient or the original sender. The domain is not part of the organization's approved RMM solutions, indicating a potential use of Living-off-the-Land RMM (LOLRMM) techniques often employed in initial access or persistence stages by threat actors.
This activity may reflect attempted remote access, lateral movement, or data collection through unauthorized RMM deployment.
This activity may reflect attempted remote access, lateral movement, or data collection through unauthorized RMM deployment.
This rule detects potential RDP session hijacking attempts originating from an internal host. It specifically looks for TCP traffic destined for port 3389 (RDP) on the home network, with a specific content signature "|03 00|" at the beginning of the payload. A threshold of 3 connections within 10 seconds from the same destination is set to reduce false positives.
Detects cloud services being used to move laterally between cloud resources
Detects when the same SessionId is used to sign in from more than one location across interactive and non-interactive sign-ins.
This rule detects attempts to establish a VNC (Virtual Network Computing) connection on TCP port 5901, which is an alternative port often used for VNC. The detection is based on the presence of the 'RFB 00' string, which is part of the VNC protocol handshake, within the initial bytes of an established TCP connection flowing to the server.
This rule detects attempts to clear syslog files by looking for the command 'truncate -s 0' followed by 'syslog' within an SSH session. This activity is often associated with an attacker trying to remove evidence of their presence on a compromised system.
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