Detections

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

4,542 detections

This rule detects an unusual number of file creations or modifications where the filename contains keywords like 'patch', 'update', or 'fix' by a single account within a one-hour window. This could indicate an automated patching process, software deployment, or potentially malicious activity attempting to modify system files under the guise of an update.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
000
Detects the creation of archive files (zip, rar, 7z, tar.gz) by processes other than common archiving utilities. This could indicate data staging or preparation for exfiltration by an adversary.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
5 months ago
104
Detects the creation of disk image files (ISO, IMG, VHD, VHDX, WIM) within temporary folders under a user's AppData directory. This activity can be indicative of malware staging or unpacking, often associated with initial access techniques where malicious payloads are delivered as disk images.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
000
Identifies .lnk files dropped into Startup folders, a persistence technique tied to WinRAR exploitation.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
000
Detects Hero proxyware artifacts being written or modified within the Windows SysWOW64 directory. Presence of these files may indicate installation of unauthorized proxy services or abuse of enterprise endpoints for traffic relaying.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
000
This rule detects suspicious file creation or modification events in the root directory (C:\) for files commonly associated with boot sectors, such as 'bootsect.bak', 'bootloader', 'MBR', and 'VBR'. Such modifications can indicate ransomware activity or other forms of boot integrity compromise.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
000
This rule detects potential ransomware activity by monitoring for a high volume of file creation or renaming events where the new file names end with common ransomware extensions such as '.encrypted', '.locked', or '.crypted'. It aggregates these events over 5-minute intervals and triggers if 50 or more such files are observed on a single device.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
000
This rule detects suspicious file activity indicative of ransomware by monitoring for a high volume of file creations or renames where the filenames contain common ransomware-related extensions such as '.encrypted', '.locked', or '.ransom'. It aggregates these events over a one-hour period per device and triggers if 20 or more such events occur.
avatar
Ankit Mehta@Secvyn
Bharat Cyber Guardians
5 months ago
000
Detects file execution where curl.exe or bitsadmin.exe are copied to a public document folder and renamed to DLL extensions (like winhttp.dll or wininet.dll) to evade detection. This activity is associated with the TAX#TRIDENT campaign.
avatar
Brandon Rodriguez@BMRodriguez
avatar
Federal Signal Detections
5 months ago
80338
Detects the creation of files by the "node.exe" process within the ".vscode-server" directory, specifically targeting paths related to user history. This activity could indicate remote file creation via the Visual Studio Code tunnel feature, which might be used for unauthorized access or data transfer.
avatar
Thiru N@Iamthiru
CrowdStrike Logscale
5 months ago
70147
This detection identifies suspicious child process execution spawned from Notepad++ (notepad++.exe), which may indicate exploitation attempts related to CVE-2026-48778 and CVE-2026-48800. These vulnerabilities involve potential arbitrary code execution through malicious manipulation of Notepad++ configuration (config.xml) and shortcut (shortcuts.xml) files.

The rule detects abnormal execution of system binaries such as PowerShell, CMD, MSHTA, Rundll32, and Regsvr32 launched from Notepad++, which is not expected in normal user activity. Such behavior may indicate successful exploitation, plugin abuse, or post-exploitation execution triggered via malicious configuration or user interaction.

This detection is intended for identifying early indicators of code execution chains originating from Notepad++.
avatar
Kumaresan Selladurai@KumaresanSelladurai
avatar
Detections.ai Community
5 months ago
9026
Detects the creation or modification of YTSysConfig.ini or YTSysConfig.ytf, which are runtime configuration files for the ClientSetup/Yangtu payload used in the TAX#TRIDENT campaign. This activity indicates potential deployment or configuration of the malware.
avatar
Brandon Rodriguez@BMRodriguez
avatar
Federal Signal Detections
5 months ago
20247
Detects the creation or modification of the specific malware debug log file 'lua_traceback.log' in the C:\temp directory, which is a unique artifact of the BoldTealLayer loader.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
106
Detects the creation or modification of specific LaunchAgent plist files used by JINX-0164's AUDIOFIX and MINIRAT malware for persistence on macOS. The rule monitors for file creation, renaming, or modification events within the /Library/LaunchAgents/ directory, specifically targeting plist files with names known to be used by this malware.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
5017
Detects the creation or modification of GitHub Actions workflow files designed to dump and exfiltrate repository secrets, a technique observed in the Mini Shai-Hulud supply chain attack. This rule specifically looks for file events in GitHub Actions workflow directories combined with command-line patterns indicative of secret exfiltration or the creation of a specific malicious workflow file ('codeql_analysis.yml') by scripting interpreters.
avatar
Brandon Rodriguez@BMRodriguez
avatar
Federal Signal Detections
5 months ago
90515
KQL Query
avatar
Yunus Coban@yunusmrcoban
avatar
Detections.ai Community
5 months ago
150326
KQL Query
avatar
Yunus Coban@yunusmrcoban
avatar
Detections.ai Community
5 months ago
170325
This rule detects modifications, creations, or renames of the Google Chrome 'Secure Preferences' file on macOS. This activity can be indicative of malware, such as FlutterShell, attempting to alter browser settings or inject malicious configurations for persistence or other malicious purposes.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
105
Identifies the creation of a stage-2 binary named 'payload.bin' within a 'node_modules' directory. This artifact is dropped by the Gen-1 stager used in the vpmdhaj malicious npm campaign, which targets cloud and CI/CD credentials.
avatar
Ethan Andrews@eandrews
avatar
Federal Signal Detections
5 months ago
3015
Detects the creation of specific files associated with the UAC-0184 threat group, often used in DLL sideloading scenarios. The rule looks for the presence of 'cluster-overlay64.exe', 'plane9engine.exe', 'plane9engine.dll', 'openvr_api.dll', 'kernel-diag.lib', and 'filter.bin' in common temporary or user data directories. It triggers if three or more of these files are found within an hour, or if 'kernel-diag.lib' or 'filter.bin' are present.
avatar
Daniel Jeremiah@daniyyell
avatar
Detections.ai Community
5 months ago
004
This rule detects suspicious activity involving PowerShell downloading content (using Invoke-WebRequest, iex, or DownloadString) followed by the creation of specific suspicious files (Browser Update.exe, update.zip, update.msi) on the same device within a 10-minute window. This correlation suggests a potential ingress of malicious tools or updates.
avatar
Ankit Mehta@Secvyn
avatar
Detections.ai Community
5 months ago
104
Page 177 of 217