Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
20,501 detections
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IDS Classtypes
1
Detects the execution of known screen capture and sniping tools (such as SnippingTool, Greenshot, ShareX, OBS, etc.) when initiated from potentially suspicious user-controlled directories like AppData, Temp, or Downloads. This behavior may indicate an attempt to capture sensitive desktop information or credentials.
Detects the installation of RustDesk or Cloudflared as a persistent Windows service, initiated by a PowerShell script. This behavior is indicative of unauthorized use of remote access or tunneling tools, often observed in intrusion activity such as Bumblebee, AdaptixC2, or Akira ransomware to facilitate persistence and establish reverse tunnels through firewalls.
Detects the execution of base64 decoded commands piped directly into a Unix shell (sh, bash, or zsh). This is a common technique used by attackers to execute obfuscated payloads, often found in reverse shells or stage-two malware delivery, where the attacker encodes their command to bypass simple keyword-based security filters.
This rule detects the creation, modification, or renaming of a file named '/tmp/helper' within a one-day window of a 'curl' or 'wget' command-line execution that references this specific path. This pattern is commonly indicative of an adversary downloading and staging malicious tools or payloads in a temporary directory on Linux systems.
Detects the use of reg.exe to modify a Windows Run registry key to execute a destructive 'format C:' command upon system startup, indicative of wiper-style malware activity.
Detects the use of reg.exe to create persistence via Windows Registry Run or RunOnce keys using specific naming conventions commonly associated with Stealer/1.0 malware (e.g., SystemUpdate, SystemCheck) targeting files located in the Downloads directory.
Detects the execution of cmstp.exe with the /au parameter, which is commonly used to install malicious INF files, when initiated by LockAppHost.exe. This pattern is often indicative of an attempt to bypass application control or achieve privilege escalation by leveraging the legitimate Microsoft Connection Manager Profile Installer.
Detects the execution of VBS scripts (wscript.exe or cscript.exe) that interact with the Windows Startup folder to create shortcuts. This behavior is associated with persistence mechanisms where malicious scripts create masqueraded shortcuts (e.g., SecurityHealth, OneDriveUpdate) in the user's Startup folder, often using hidden attributes to evade detection.
This rule detects potential cryptocurrency mining activity where known miner executables (specifically XMRig) or malicious scripts/processes are masquerading as or being spawned by 'LockAppHost.exe' or 'LockAppHost14a02b.exe'. It also monitors for subsequent attempts by these processes to terminate security-related tasks or establish persistence via registry run keys.
Detects the execution of PowerShell with obfuscated parameters such as '-WindowStyle Hidden' and '-ExecutionPolicy Bypass' in combination with network-related cmdlets (Invoke-WebRequest) or process manipulation (Start-Process). It also checks for references to common temporary file paths or 'main.exe', often indicative of malicious script execution or payload staging. The rule also includes a filter to identify if the process was initiated by common WSL or Node.js related processes.
This rule detects the use of the Windows Service Control Manager (sc.exe) to create or configure a service named 'TaskHandler'. The rule specifically looks for command lines that reference potentially malicious files like 'F7u00ex.exe' or specific driver/restart patterns often associated with the persistence mechanism of the Spark RAT.
Detects execution and usage of the DSInternals PowerShell module. Which can be used to perform what might be considered as suspicious activity such as dumping DPAPI backup keys or manipulating NTDS.DIT files.
The DSInternals PowerShell Module exposes several internal features of Active Directory and Azure Active Directory. These include FIDO2 and NGC key auditing, offline ntds.dit file manipulation, password auditing, DC recovery from IFM backups and password hash calculation.
The DSInternals PowerShell Module exposes several internal features of Active Directory and Azure Active Directory. These include FIDO2 and NGC key auditing, offline ntds.dit file manipulation, password auditing, DC recovery from IFM backups and password hash calculation.
Detects execution of the built-in script located in "C:\Windows\System32\gatherNetworkInfo.vbs". Which can be used to gather information about the target machine
The following analytic detects excessive usage of the nslookup application, which may indicate potential DNS exfiltration attempts. It leverages Sysmon EventCode 1 to monitor process executions, specifically focusing on nslookup.exe. The detection identifies outliers by comparing the frequency of nslookup executions against a calculated threshold. This activity is significant as it can reveal attempts by malware or APT groups to exfiltrate data via DNS queries. If confirmed malicious, this behavior could allow attackers to stealthily transfer sensitive information out of the network, bypassing traditional data exfiltration defenses.
Detects instances where common web server processes (e.g., PHP, Apache, Nginx) spawn child processes associated with command-line utilities (e.g., curl, bash, python). The rule specifically monitors for command-line arguments referencing log files or traces, which is indicative of potential exploitation attempts or post-exploitation activities such as log poisoning or remote code execution.
Detects evidence of persistence mechanisms associated with the StyleSmuggler implant. The rule monitors for malicious crontab entries and file system activity related to gvfsd-user, .gvfsd, and /tmp/.kw_ artifacts.
Detects evidence of persistence mechanisms associated with the StyleSmuggler implant. The rule monitors for malicious crontab entries and file system activity related to gvfsd-user, .gvfsd, and /tmp/.kw_ artifacts.
Detects processes named 'kworker' (in bracket notation) that are not initiated by the legitimate 'kthreadd' parent process, which is indicative of a process masquerading as a kernel worker thread. Legitimate kworker processes are kernel threads managed by kthreadd. Processes masquerading as these can be used by malware to hide in plain sight.
Detects processes named 'kworker' (in bracket notation) that are not initiated by the legitimate 'kthreadd' parent process, which is indicative of a process masquerading as a kernel worker thread. Legitimate kworker processes are kernel threads managed by kthreadd. Processes masquerading as these can be used by malware to hide in plain sight.
Detects processes named 'kworker' (in bracket notation) that are not initiated by the legitimate 'kthreadd' parent process, which is indicative of a process masquerading as a kernel worker thread. Legitimate kworker processes are kernel threads managed by kthreadd. Processes masquerading as these can be used by malware to hide in plain sight.
Detection of sc.exe utility adding a new service with special permission which hides that service.
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