Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects unauthorized modifications to the /etc/sudoers.d/ directory, specifically identifying files with a 'prl-rce-' naming pattern that contain 'NOPASSWD:ALL'. This configuration allows users to execute commands with elevated privileges (root) without requiring a password, which is a common technique used by attackers to maintain persistence and facilitate privilege escalation on Linux systems.
This rule detects unauthorized modifications to the /etc/sudoers.d/ directory, specifically identifying files with a 'prl-rce-' naming pattern that contain 'NOPASSWD:ALL'. This configuration allows users to execute commands with elevated privileges (root) without requiring a password, which is a common technique used by attackers to maintain persistence and facilitate privilege escalation on Linux systems.
Detects unauthorized or non-privileged processes attempting to communicate with the Parallels Desktop IPC Unix socket (prl_disp_service.socket). This behavior is indicative of exploitation attempts targeting the ParaShells vulnerability (CVE-2026-90894), where an unprivileged user can leverage the socket's lack of proper signature or identity verification to escalate privileges.
Detects the 'prl_disp_service' process spawning 'tar' with the '--use-compress-program' flag set to an unconventional binary. This behavior is associated with the exploitation of ParaShells (CVE-2026-90894), where an attacker leverages the compression program hook in 'tar' to execute arbitrary commands with root privileges.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects instances where Acronis processes spawn common administrative or potentially sensitive utilities (such as chmod, chown, bash, or sudo) while running as a user other than root. This behavior may indicate an attempt to utilize Acronis for privilege escalation or unauthorized command execution on Linux systems.
Detects potential local privilege escalation via Windows ALPC (Advanced Local Procedure Call) heap-based buffer overflow by identifying a non-SYSTEM Chrome process tree spawning child processes with SYSTEM privileges. The rule specifically monitors for suspicious child binaries or paths characteristic of exploit payloads while excluding legitimate Chrome update and crash handler processes.
Detects suspicious activities originating from CrowdStrike Falcon remediation processes (e.g., CSFalconService.exe, CSFalconContainer.exe). The rule identifies two distinct patterns: either a file operation (delete, modify, rename, quarantine, or restore) followed within 2 minutes by the loading of an unsigned or non-standard DLL, or the spawning of an elevated SYSTEM process from a non-SYSTEM parent process. This behavior is indicative of potential LPE (Local Privilege Escalation) abuse via the Falcon remediation engine, often referred to as FalconFlank-style exploitation.
Detects suspicious activities originating from CrowdStrike Falcon remediation processes (e.g., CSFalconService.exe, CSFalconContainer.exe). The rule identifies two distinct patterns: either a file operation (delete, modify, rename, quarantine, or restore) followed within 2 minutes by the loading of an unsigned or non-standard DLL, or the spawning of an elevated SYSTEM process from a non-SYSTEM parent process. This behavior is indicative of potential LPE (Local Privilege Escalation) abuse via the Falcon remediation engine, often referred to as FalconFlank-style exploitation.
This rule detects potentially malicious PowerShell execution patterns involving hidden windows, administrative elevation via 'Start-Process -Verb RunAs', and the targeting or execution of rsetup64.exe within specific system paths. It also flags execution chains where 'net session' commands, often used for discovery or local privilege verification, are piped to null and followed by or initiate the same target executables, suggesting lateral movement or persistence attempts.
Detects behavioral indicators consistent with local privilege escalation targeting Windows ALPC subsystem vulnerabilities (CVE-2026-85880). The rule correlates: 1) Unsigned or low-prevalence processes loading sensitive ALPC-related DLLs (rpcss.dll, ntdll.dll), 2) Subsequent crashes or restarts of critical ALPC-handling system components (lsass.exe, RPCSS, wuauserv), and 3) The generation of a new SYSTEM-level process by a parent that was not previously running as SYSTEM within a short temporal window.
Detects instances where WerFault.exe or WerMgr.exe, running with SYSTEM privileges, loads a DLL file from the Windows\System32 directory that was created within 10 minutes of the image load event. This behavior is indicative of potential DLL side-loading or hijack techniques used to achieve privilege escalation.
This rule detects potentially malicious PowerShell execution patterns involving hidden windows, administrative elevation via 'Start-Process -Verb RunAs', and the targeting or execution of rsetup64.exe within specific system paths. It also flags execution chains where 'net session' commands, often used for discovery or local privilege verification, are piped to null and followed by or initiate the same target executables, suggesting lateral movement or persistence attempts.
This rule detects potentially unauthorized root account activity by monitoring for 'root' logon events and privileged process execution (such as 'su' or 'sudo'). It flags sessions or commands that occur outside of defined business hours, originate from unapproved IP addresses, use unapproved accounts, or are executed via suspicious parent processes, providing a high-confidence indicator of anomalous administrative behavior.
This rule detects potentially unauthorized root account activity by monitoring for 'root' logon events and privileged process execution (such as 'su' or 'sudo'). It flags sessions or commands that occur outside of defined business hours, originate from unapproved IP addresses, use unapproved accounts, or are executed via suspicious parent processes, providing a high-confidence indicator of anomalous administrative behavior.
This rule detects potentially unauthorized root account activity by monitoring for 'root' logon events and privileged process execution (such as 'su' or 'sudo'). It flags sessions or commands that occur outside of defined business hours, originate from unapproved IP addresses, use unapproved accounts, or are executed via suspicious parent processes, providing a high-confidence indicator of anomalous administrative behavior.
Detects instances where LiteLLM, or related Python application processes (uvicorn, python), spawn a shell or command-line utility (bash, sh, id) under the root user account. This behavior is indicative of potential container breakout, application exploitation, or privilege escalation attempts originating from a web-accessible service.
Detects instances where LiteLLM, or related Python application processes (uvicorn, python), spawn a shell or command-line utility (bash, sh, id) under the root user account. This behavior is indicative of potential container breakout, application exploitation, or privilege escalation attempts originating from a web-accessible service.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects a command shell (cmd.exe, powershell.exe, powershell_ise.exe, pwsh.exe) created with a SYSTEM SID whose immediate parent process is a POSITIVELY IDENTIFIED non-SYSTEM account running at Low/Medium integrity. Excludes known-benign SYSTEM-spawning binaries and blank-parent scheduled-task/service noise confirmed via live telemetry and attached evidence logs, and drops the prior TokenElevationTypeFull branch which mostly matched routine UAC-elevated admin activity rather than an actual SYSTEM token.
Detects attempts to modify internal PostgreSQL system catalog tables (pg_authid or pg_proc) to grant superuser privileges or alter authorization records. This activity is commonly associated with exploiting logical decoding plugins to achieve persistence or privilege escalation in PostgreSQL environments.
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