Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Flags executables whose embedded metadata identifies them as Cloudflared while the filename differs from expected distribution names, suggesting potential evasion through binary renaming.
Identifies 'forfiles.exe' being executed with a combination of multiple command-line switches ('/c', '/p', '/m' or their hyphenated equivalents). This pattern can indicate automated scripting or malicious Living-off-the-Land activity, where 'forfiles.exe' is used to execute commands on multiple files or in specific directories.
Detects named pipe activity with remote access enabled, initiated by JsonVMAccessExtension.exe running as SYSTEM. This may indicate abuse of the Azure VM Access Extension for unauthorized remote access.
Detects trusted .NET tooling launching shells, scripting engines, or administrative utilities that are not typically associated with legitimate compilation workflows, potentially indicating malicious execution or post-exploitation.
This rule detects multiple successful RDP logons (LogonType 10) within a one-hour window by accounts containing '$' (often machine accounts) or 'admin' (privileged accounts). This behavior can be indicative of an adversary attempting to gain remote access and potentially deploy ransomware or other malicious payloads, especially if multiple source IPs are observed.
This rule detects suspicious modifications to registry keys under 'Software\Microsoft\Windows\CurrentVersion\Policies' where the registry value data contains '.exe' or '.dll'. Such changes, especially multiple occurrences within a short timeframe (3 or more changes within an hour), can indicate ransomware activity attempting to alter file associations or execution policies to maintain persistence or execute malicious payloads.
This rule detects the creation or modification of executable files (.exe, .dll, .sys) within critical Windows system directories (C:\Windows\System32\ or C:\Windows\SysWOW64\). Such activity can indicate an attempt to establish persistence, elevate privileges, or inject malicious code into legitimate system processes.
This rule detects suspicious DLL injection activity by identifying multiple DLL loads from unusual folders such as 'Temp', 'AppData', or 'Windows\Temp'. Adversaries often drop malicious DLLs into these directories and then inject them into legitimate processes to achieve persistence, privilege escalation, or defense evasion. The rule counts the number of DLL loads from these suspicious locations by the same initiating process on the same device, triggering an alert if five or more such loads occur, indicating a concerted malicious effort.
Hidden User Use Case Monitors dslocal user plist modifications for IsHidden, indicating a concealed local account created or modified outside standard account management workflows.
Detects attempts to disable Gatekeeper assessment or modify System Integrity
Protection, common defense evasion before unsigned payload execution.
Protection, common defense evasion before unsigned payload execution.
This rule detects command-line executions that attempt to disable Windows Defender or the Windows Firewall. It specifically looks for process creation events (EventID 4688) where the command line contains keywords like 'disable' along with 'defender' or 'firewall', executed via PowerShell or cmd. This activity is indicative of an adversary attempting to impair defenses.
Detects PowerShell commands attempting to add Windows Defender exclusion paths for directories associated with the 10FXRAT malware. This rule specifically looks for the use of 'Add-MpPreference' with '-ExclusionPath' in the command line, combined with the presence of 'AppNetSvc' or 'WinDiagTrack', which are known directories used by 10FXRAT for staging and persistence.
This rule detects an anomaly in Kerberos authentication attempts by monitoring TCP traffic to port 88 (Kerberos). It triggers an alert if a source IP address attempts Kerberos authentication 30 or more times within a 10-second window, indicating a potential brute-force or rapid authentication attempt against a domain account.
This rule detects multiple failed SSH login attempts using the username 'root' to a server on the home network. It triggers an alert if five such attempts occur within a 30-second window from the same source IP address. This behavior often indicates a brute-force attack targeting default credentials.
This rule detects attempts to log in to a web interface using default 'admin' credentials. It specifically looks for HTTP POST requests to a URI containing 'login' and a client body that contains 'admin' twice, indicating both username and password might be 'admin'.
Detects the creation or modification of Kubernetes ClusterRoles, ClusterRoleBindings, and RoleBindings, which can be used for privilege escalation within a Kubernetes cluster. The rule specifically flags activities related to 'cluster-admin' roles as critical and other administrative roles as high severity.
Detects the execution of Google Chrome with specific command-line flags (--hide-crash-restore-bubble and --disable-session-crashed-bubble) that are often used by malware like FlutterShell to suppress crash recovery prompts and potentially evade detection or user interaction. This behavior can indicate an attempt to hide malicious activity or maintain persistence without alerting the user to abnormal browser states.
WScript Execution From ADS
Cortex XDR
Detects wscript.exe or cscript.exe executing a script from an Alternate Data Stream (ADS) path, specifically within the Users directory, as indicated by a colon without a preceding drive letter context. This behavior is known to be used by malware like GammaWorm for persistence by executing hidden VBScript payloads.
Detects a successful login from a non-compliant, unmanaged device followed by an inbox rule creation or modification within 10 minutes. This sequence aligns with post-compromise evasion tactics observed in device code phishing campaigns like Kali365, where attackers quickly suppress security alerts after gaining access.
Detects Linux VDSO hijacking for privilege escalation without syscalls
Detects replacement or hijacking of Terminal Services DLL for persistence
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