Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
8,395 detections
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Detects the execution of the PoC that can be used to exploit Sysmon CVE-2022-41120
Detects potential exploitation attempts of the Netlogon Elevation of Privilege Vulnerability (CVE-2020-1472), also known as Zerologon. This rule specifically looks for Event ID 4742 (A computer account was changed) where the SubjectUserName is 'ANONYMOUS LOGON' and the TargetUserName matches a Domain Controller's machine account name (ending with '$'), while filtering out legitimate password changes by checking if 'PasswordLastSet' is not '-'.
Detects the creation of named pipes with patterns characteristic of the EfsPotato privilege escalation tool. This tool exploits a vulnerability related to the Encrypting File System (EFS) service to achieve local privilege escalation by creating specific named pipes for inter-process communication.
Detects when a memory process image does not match the disk image, indicative of process hollowing. This rule specifically looks for 'Image is replaced' events and filters out common legitimate applications that might exhibit similar behavior, such as applications in 'Program Files', 'Windows\System32\wbem\WMIADAP.exe', 'Windows\SysWOW64\wbem\WMIADAP.exe', Opera, and Edge.
Detects command-line keywords indicative of the execution of the WinPwn tool, which is used for Windows and Active Directory reconnaissance and exploitation. This rule specifically looks for 'Offline_Winpwn', 'WinPwn ', 'WinPwn.exe', or 'WinPwn.ps1' in the command line.
Detects scriptblock text keywords indicative of potential usage of the tool WinPwn. WinPwn is a tool for Windows and Active Directory reconnaissance and exploitation. The rule specifically looks for 'Offline_Winpwn', 'WinPwn ', 'WinPwn.exe', or 'WinPwn.ps1' within PowerShell script block logs.
Detects the modification of the 'Ime File' registry value within the 'Keyboard Layouts' key to include an uncommon file extension. This technique can be used by attackers to load a malicious DLL into a process via the Windows Input Method Editor (IME) feature, typically after sending a WM_INPUTLANGCHANGEREQUEST message. The rule specifically looks for modifications where the 'Ime File' value does not end with the standard '.ime' extension, indicating potential malicious activity.
Detects whether a process is created from an image path that does not have a standard executable file extension (e.g., .exe, .com, .bin). This behavior can indicate advanced evasion techniques like process ghosting or other unorthodox methods to launch processes, where an executable might be disguised or loaded without a typical extension. The rule includes various filters to reduce false positives from legitimate system processes, temporary files, installer components, and specific third-party applications.
Detects the execution of the 'whoami.exe' command by highly privileged accounts such as 'AUTHORITY\SYSTEM', 'NT AUTHORITY\SYSTEM', or 'TrustedInstaller'. This activity can indicate an attacker performing discovery after achieving privilege escalation, as these accounts are often targeted for abuse.
Detects the modification of the "Ime File" registry value within the Keyboard Layouts key to point to suspicious folders. This technique can be used by attackers to load a malicious DLL into a process after sending a WM_INPUTLANGCHANGEREQUEST message, leveraging the Windows Input Method Editor (IME) feature for persistence or defense evasion. The rule specifically looks for DLL paths located in common temporary or user-writable directories, which are often abused by malware.
Detects the execution of "whoami.exe" by privileged accounts that are often abused by threat actors
Detects the creation of a specific file path commonly used in Proof-of-Concept (PoC) exploits for the Print Spooler vulnerability CVE-2021-1675, also known as PrintNightmare. This file path is typically created when an attacker successfully exploits the vulnerability to achieve remote code execution or privilege escalation.
Detects suspicious DLL loads by the Windows Print Spooler service from its backup driver folders. This behavior is indicative of exploitation attempts related to vulnerabilities like PrintNightmare (CVE-2021-1675, CVE-2021-34527) where an attacker can force the spooler service to load arbitrary DLLs, leading to privilege escalation or remote code execution.
This rule detects attempts to exploit the PrintNightmare vulnerability (CVE-2021-1675) by monitoring for DLL deletions within the Windows Spooler Service driver folder. Specifically, it looks for `spoolsv.exe` deleting files in `C:\Windows\System32\spool\drivers\x64\3\`, which is a common indicator of this exploit.
Detects signs of the exploitation of Local Privilege Escalation (LPE) vulnerability CVE-2021-41379. This specific rule identifies the creation of an 'elevation_service.exe' file by 'msiexec.exe' within the Microsoft Edge application directory, which is a known indicator of this exploit.
This rule detects the execution of 'Autoit3.exe' when it is spawned by suspicious parent processes such as 'cmd.exe', 'KeyScramblerLogon.exe', or 'msiexec.exe'. It specifically filters out legitimate executions of 'Autoit3.exe' from standard installation paths to reduce false positives. This activity is indicative of the DarkGate malware infection chain, which leverages AutoIt3.exe to execute shellcode for process injection and command-and-control communication.
This rule detects the creation or activation of new user accounts in Okta with specific display names, such as 'svc_network_backup', which were identified as indicators of compromise during the Okta Support System 2023 breach. It aims to flag suspicious account activity that could indicate unauthorized access or persistence by an attacker. The rule can be improved by filtering out legitimate usernames if 'svc_network_backup' is a known and authorized account in the environment.
Detects the use of "vim" and its sibling commands (rvim, vimdiff) to execute a shell or proxy commands. This behavior can be indicative of privilege escalation, unauthorized command execution, or attempts to break out of restricted environments by leveraging the capabilities of these text editors to run arbitrary commands or scripts (e.g., via :!/, :lua, :py, or direct shell calls).
This rule detects exploitation indicators for CVE-2023-20198, a privilege escalation vulnerability in Cisco IOS XE Software Web UI. It looks for specific log messages related to Web UI installation operations, system configuration changes, or successful web logins, in conjunction with the use of specific user accounts ('cisco_tac_admin', 'cisco_support', 'cisco_sys_manager') that are not typically created by default or used by Cisco representatives. The combination of these events suggests an attempt to exploit the vulnerability.
Detects potential adversaries leveraging WMI ActiveScriptEventConsumers remotely to move laterally in a network. This event is best correlated and used as an enrichment to determine the potential lateral movement activity.
Detects the creation of a scheduled task in the Windows Registry that is specifically associated with the Diamond Sleet APT group. This activity is linked to their exploitation of the TeamCity CVE-2023-42793 vulnerability, where they create a scheduled task named 'Windows TeamCity Settings User Interface' to establish persistence or execute malicious code.
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