Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the creation or modification of APK files in user-accessible download and temporary directories initiated by web browsers or file management applications. This behavior is indicative of potential sideloading of malicious Android applications, often used in malware delivery campaigns.
Detects modifications to the `/Library/Preferences/com.apple.loginwindow.plist` file on macOS. This file can be abused by adversaries to establish persistence by configuring login hooks or other autostart mechanisms.
Detects the creation or modification of '.env' files within '.gemini' directories, often found in CI/CD pipelines or developer environments. This activity may indicate an attempt to inject malicious environment variables to hijack the execution flow of the Gemini CLI or related tooling.
Detects the creation or loading of specific DLL files identified as part of the Turla STOCKSTAY malware framework. The rule monitors both file system operations (creation, modification, renaming) and process image loads to identify indicators of this specific campaign.
Detects the creation or modification of potentially malicious files such as autorun.inf or scripts (.lnk, .vbs, .hta, .bat, .cmd, .ps1) on removable or network drive letter paths (D-Z). This activity is indicative of attempts to facilitate malware execution via removable media, bypassing standard system binaries by excluding Microsoft-signed processes.
Detects the creation and subsequent deletion or modification of 'wipefile.tmp' or similarly named temporary wipe artifacts, which are used by the Gentlemen ransomware during its cleanup phase. This rule specifically looks for file events (creation, deletion, modification) related to this filename.
Detects high volumes of file operations (creation, rename, or modification) where files are given extensions typically associated with ransomware (e.g., .locked, .encrypted). The rule aggregates activity by process and endpoint and triggers an alert when the number of such operations exceeds a defined threshold, while excluding known legitimate backup and security software.
Detects the use of the Windows certutil.exe utility for potentially suspicious file operations, including downloading files from remote URLs via 'urlcache' or 'split', or encoding/decoding files. This is a common Living-off-the-Land (LotL) technique used by attackers to stage malicious payloads or deobfuscate malicious content.
Detects file creation, copy, or rename operations within known VPN application directories (CyberGhost, ExpressVPN, NordVPN) when initiated by Chromium Embedded Framework (CEF) related processes (CefSharp.BrowsersSubprocess). This behavior is highly irregular as standard web browser components should not be modifying the local configuration or installation directories of VPN software.
Detects the creation or modification of the VbaProject.OTM file, which stores VBA macros for Microsoft Outlook, by a process other than the Outlook application (OUTLOOK.EXE). This is a common technique used to deploy malicious macros for persistence or code execution within the Outlook environment.
Detects potential WMI persistence mechanisms by monitoring the execution of 'mofcomp.exe' by non-Microsoft signed binaries, the creation of MOF files in suspicious user-writable directories (Temp, AppData, etc.), and the suspicious execution of 'scrcons.exe', which is the WMI permanent event consumer process.
Detects potential WMI persistence mechanisms by monitoring the execution of 'mofcomp.exe' by non-Microsoft signed binaries, the creation of MOF files in suspicious user-writable directories (Temp, AppData, etc.), and the suspicious execution of 'scrcons.exe', which is the WMI permanent event consumer process.
Detects potential activity associated with the AMOS infostealer, where common terminal commands (cp or mv) are used to manipulate or replace legitimate Ledger Live or Trezor Suite cryptocurrency wallet applications located in the /Applications directory on macOS.
Detects the creation or modification of a file named 'dui70.dll' (or variants if renamed) within non-standard, user-writable directories such as AppData or Temp. This behavior is indicative of malware, specifically the OXLOADER payload, preparing for module-stomping by placing a malicious DLL copy outside legitimate Windows System32 or SysWOW64 paths.
Detects file encryption activity associated with Prinz Eugen ransomware by monitoring for newly created files with the '.prinzeugen' extension and a significant total file size increase within a short period.
This rule detects the creation or modification of files with the '.prinzeugen' extension, which is indicative of the Prinz Eugen ransomware. It specifically looks for these files in common user directories such as 'Users', 'Documents', 'Downloads', and 'Desktop' within the last hour, suggesting recent ransomware activity.
Detects high-frequency file modifications or renames targeting file extensions commonly associated with ransomware. The rule monitors for a threshold of more than 20 file operations within a short timeframe by a specific process on an endpoint, indicating a potential mass encryption event.
Detects high-frequency file modifications or renames targeting file extensions commonly associated with ransomware. The rule monitors for a threshold of more than 20 file operations within a short timeframe by a specific process on an endpoint, indicating a potential mass encryption event.
This rule detects potential ransomware activity by identifying the rapid encryption of multiple common document and database file types, indicated by the '.prinzeugen' extension. It specifically looks for at least 20 such files being created or modified within a 10-minute window on a single device.
Detects suspicious activity related to the Print Spooler service (spoolsv.exe), specifically focusing on the spawning of known command-line interpreters (cmd.exe, powershell.exe, rundll32.exe) by spoolsv.exe, as well as the creation or modification of DLL files within the system print spool drivers directory by processes other than spoolsv.exe. This activity is often associated with privilege escalation and persistence techniques involving print spooler service abuse.
Detects modification of scripts in extension folders.
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