Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

3,240 detections

Detects the execution of 'awk' with command-line arguments that indicate it's being used to execute system commands or scripts. This often signifies malicious activity where 'awk' is leveraged for arbitrary command execution.
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Danny Y@zendannyy
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Detections.ai Community
6 months ago
00210
This rule detects when an executable (.exe) is launched from the AppData\Roaming directory. This directory is often used by legitimate applications, but it is also a common location for malware to drop and execute itself. The rule excludes processes related to OneDrive and Teams to reduce false positives.
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nomit vyas@xoxo
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Detections.ai Community
6 months ago
4068
This rule detects when a Microsoft Office application (Word, Excel, PowerPoint) spawns a command interpreter (cmd.exe, powershell.exe, wscript.exe, cscript.exe). This behavior is often indicative of malicious activity, such as macro-enabled malware attempting to execute commands on the system.
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nomit vyas@xoxo
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Detections.ai Community
6 months ago
1047
Detects the execution of 'awk' with command-line arguments that indicate it's being used to execute system commands or scripts. This often signifies malicious activity where 'awk' is leveraged for arbitrary code execution.
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nomit vyas@xoxo
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Detections.ai Community
6 months ago
0045
Detects the use of the Enable-WindowsOptionalFeature cmdlet to reactivate the deprecated and vulnerable SMB1Protocol. Attackers use this to facilitate lateral movement to legacy systems.
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Elgonad .@elgonad
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Detections.ai Community
6 months ago
20131
This query detects activity associated with the BlueHammer, RedSun, and UnDefend toolset used in post‑exploitation campaigns (including "Nightmare Eclipse" intrusions). It identifies:
- Execution of suspicious binaries (FunnyApp.exe, RedSun.exe, undef.exe, z.exe) and command‑line flags (-h, -aggressive).
- File creation in unusual user directories (e.g., Pictures or two‑letter Downloads subfolders).
- BeigeBurrow tunneling via agent.exe.
- Reconnaissance commands (whoami /priv, cmdkey /list, net group).
- Network connections to known‑malicious IP addresses.
- Use of the REDSUN named pipe for privilege escalation.

The query combines process, file, and network events to surface potential hands‑on‑keyboard activity and follow‑on tooling
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Thiru N@Iamthiru
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Hunters
6 months ago
13753,876
This rule detects the execution of an executable (.exe) file from a user's temporary directory (AppData\Local\Temp). This behavior is often associated with malware or suspicious activity, as temporary directories are frequently used by adversaries for staging and executing payloads. The rule specifically excludes executables with 'setup' in their command line to reduce false positives from legitimate software installations.
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nomit vyas@xoxo
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Detections.ai Community
6 months ago
0038
This rule detects instances where powershell.exe is launched by cmd.exe, and the command line does not contain 'system32'. This pattern can indicate an attempt to execute PowerShell scripts or commands from non-standard locations, potentially bypassing security controls or executing malicious code.
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nomit vyas@xoxo
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Detections.ai Community
6 months ago
3036
This rule identifies various indicators of Mimikatz execution, including specific command-line arguments, file names, suspicious access to the LSASS process memory, and the creation or loading of malicious services or DLLs associated with Mimikatz. It aims to detect credential dumping activities and persistence mechanisms often employed by attackers.
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Kenji Choy@kchoy
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Detections.ai Community
6 months ago
180383
This query detects activity associated with the BlueHammer, RedSun, and UnDefend toolset used in post‑exploitation campaigns (including "Nightmare Eclipse" intrusions). It identifies:
- Execution of suspicious binaries (FunnyApp.exe, RedSun.exe, undef.exe, z.exe) and command‑line flags (-h, -aggressive).
- File creation in unusual user directories (e.g., Pictures or two‑letter Downloads subfolders).
- BeigeBurrow tunneling via agent.exe.
- Reconnaissance commands (whoami /priv, cmdkey /list, net group).
- Network connections to known‑malicious IP addresses.
- Use of the REDSUN named pipe for privilege escalation.

The query combines process, file, and network events to surface potential hands‑on‑keyboard activity and follow‑on tooling
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Wambua Thyaka@thyaka
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Detections.ai Community
6 months ago
4002,989
This rule detects the execution of suspicious filenames (FunnyApp.exe, RedSun.exe, undef.exe, z.exe, powershell.exe) from common user download or pictures directories. Adversaries often place malicious executables in these locations to evade detection and execute their payloads.
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Bhojraj Joshi@cybrbhojrajjoshi
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Detections.ai Community
6 months ago
801,748
Detects the execution of common browser executables in headless mode with command-line arguments indicative of data exfiltration, malicious rendering (dump-dom), or external requests (http/data:text/html;base64,). This activity, especially when initiated by non-standard parent processes, can be a sign of automated web scraping, vulnerability scanning, or other malicious automated browser activity.
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Bhojraj Joshi@cybrbhojrajjoshi
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Detections.ai Community
6 months ago
30155
This query hunts for suspicious child interpreter processes spawned by Node.js/npm execution, consistent with malicious npm postinstall activity observed in supply chain attacks (including compromised Axios package delivery chains)
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ᴅᴜᴛᴄʜʙᴏʏ 😎@dutchboy
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DROID
6 months ago
450728
This rule detects attempts to mount a bind from a temporary directory or other sensitive system directories on Linux systems. This behavior can be indicative of an attacker trying to hide malicious activity or gain persistence by mounting a bind from a compromised location to a system directory.
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Danny Y@zendannyy
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Detections.ai Community
6 months ago
00163
This rule detects the execution of a 'curl' command on macOS that attempts to make a POST request to a file named 'salmonela' within the '/tmp/' directory. This pattern is highly suspicious and could indicate an attempt to exfiltrate data, upload malicious content, or interact with a temporary malicious script.
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Bhojraj Joshi@cybrbhojrajjoshi
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Detections.ai Community
6 months ago
40334
This rule detects the execution of the 'make' command with a '-f' flag pointing to a makefile located in common temporary or writable directories. This behavior can be indicative of an adversary attempting to execute arbitrary commands or escalate privileges by leveraging the 'make' utility to process a malicious makefile from a non-standard location.
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Danny Y@zendannyy
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Detections.ai Community
6 months ago
00141
This rule detects multiple TTPs (Tactics, Techniques, and Procedures) associated with advanced adversaries, including QEMU virtualization abuse for defense evasion, creation of malicious scheduled tasks (specifically 'TPMProfiler'), rogue account or service creation (e.g., 'CtxAppVCOMService' or 'AppMgmt' service via 'sc.exe'), port forwarding/tunneling commands (using 'ssh' or 'portproxy' with specific ports), credential access attempts via 'vssuirun.exe' or printing 'NTDS.dit', and potential DLL sideloading involving 'ADNotificationManager.exe' and 'vcruntime140_1.dll'. It also includes IOCs for specific IPs, domains, and file hashes.
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Aamir Muhammad@Aamir
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Detections.ai Community
6 months ago
170485
Detects the creation of a process named 'wt.exe' within the 'ProgramData' directory, which is an unusual location for a legitimate executable and could indicate malicious activity. Exclusions are in place for common administrative tools and specific endpoint naming conventions to reduce false positives.
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Jeremy Goldstein@jeremys1
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SentinelOne
6 months ago
90468
This rule detects suspicious command execution patterns involving the Lua interpreter on Linux systems. It specifically looks for Lua interpreter processes executing commands that run suspicious functions. These functions can be abused by adversaries to execute arbitrary commands, establish network connections, or load dynamic libraries, indicating potential malicious activity.
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Danny Y@zendannyy
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Detections.ai Community
6 months ago
20131
This rule detects the execution of specific suspicious scripts, 'dra.ps1' or 'handala.bat', via common Windows command shells such as PowerShell (powershell.exe, pwsh.exe) or Command Prompt (cmd.exe). This activity could indicate malicious execution of known adversary scripts.
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Bhojraj Joshi@cybrbhojrajjoshi
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Detections.ai Community
6 months ago
60340
Detects the execution of processes from common user-writable directories such as Desktop, Downloads, AppData, Documents, and the Public folder. Adversaries often place and execute malicious payloads in these locations to evade detection and leverage user permissions. This rule helps identify potentially unauthorized or malicious software execution.
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Bhojraj Joshi@cybrbhojrajjoshi
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Detections.ai Community
6 months ago
1065
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