Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects DNS lookups, TLS SNI headers, and HTTP Host headers associated with the known StyleSmuggler malware download domain '247.cdnflare.xyz'.
Detects outbound network traffic associated with StyleSmuggler C2 infrastructure. The rule identifies established TLS connections to a known malicious IP address (99.84.67.186) and monitors for WebSocket-over-TLS traffic using the suspicious SNI 'windwsecurity.run'.
This rule detects network connections or DNS queries to known phishing domains (typosquatted Microsoft login domains), DeadDrop Resolver domains, and suspicious HTML payloads served from common CDN/package hosting sites (e.g., unpkg.com, npmmirror.com, cdn.jsdelivr.net, yarnpkg.com). These patterns are indicative of initial access attempts via phishing or the secondary stage of malware C2 communication.
Detects suspicious command execution patterns commonly associated with ClickFix-style social engineering attacks. The rule identifies Terminal processes executing shell commands that retrieve remote content via curl, followed by base64 decoding and/or piping directly into a shell interpreter (zsh/sh/bash), which is a common technique for executing obfuscated malicious payloads.
This rule detects inbound HTTP GET requests to a specific IP address (103.86.86.244) requesting a file named 'deploy.ps1'. This behavior is characteristic of adversaries using PowerShell one-liners (cradles) like 'irm' (Invoke-RestMethod) or 'iex' (Invoke-Expression) to fetch and execute malicious scripts directly from a remote C2 infrastructure.
Detects the execution of the LOLBIN PrintBrm.exe, which can be used to create or extract ZIP files. PrintBrm.exe should not be run on a normal workstation.
Detects the use of PowerShell (Invoke-WebRequest or Invoke-RestMethod) to download files to the AppData directory, followed by the execution of a file using a 'token-raw' argument. This pattern is often associated with malicious payload delivery and execution.
Detects instances where common web server applications (e.g., Apache, Tomcat, IIS, Nginx) or Java runtime environments spawn suspicious child processes like command shells (cmd.exe, powershell.exe, sh, bash) or network utilities (wget, curl). This behavior often indicates exploitation of a web vulnerability, such as Remote Code Execution (RCE), allowing an adversary to execute commands or download further malicious payloads.
This rule detects network connections or DNS queries to known phishing domains (typosquatted Microsoft login domains), DeadDrop Resolver domains, and suspicious HTML payloads served from common CDN/package hosting sites (e.g., unpkg.com, npmmirror.com, cdn.jsdelivr.net, yarnpkg.com). These patterns are indicative of initial access attempts via phishing or the secondary stage of malware C2 communication.
Detects a suspicious sequence of activities where PowerShell downloads or extracts specific zip files (node.zip, build.zip) to staging directories, followed by the execution of associated binaries like node.exe, winpty-agent.exe, or winpty.dll from those same locations. This behavior is indicative of an adversary staging and executing tooling within temporary user directories.
Detects suspicious file transfer and subsequent execution activity associated with the ScreenConnect (ConnectWise Control) remote access application, which may indicate exploitation of file-transfer vulnerabilities. The rule monitors for ScreenConnect processes dropping executable or script files to disk followed by the spawning of command interpreters to execute those files.
This rule detects potentially suspicious activity involving the execution of node.js, npm, or curl where a specific node version (node-v20.11.1-darwin-x64) and a file named 'parser.js' appear in the command line within a short period. This pattern is indicative of a developer or attacker staging tools and scripts on a macOS system.
Detects network activity initiated by the QUICAgent backdoor (Windowsupdate.exe), which is utilized for file exfiltration and payload delivery. The detection is triggered by identifying the specific file name 'Windowsupdate.exe' in conjunction with the known malicious SHA-256 hash associated with this backdoor.
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 creation or modification of the Faronics Deploy 'ScriptRunner.log' file. This artifact records script execution history and download URLs used by the Faronics Deploy management platform, which can be abused by adversaries for persistence or remote command execution.
Detects creation or modification of the Faronics Deploy 'ScriptRunner.log' file. This artifact records script execution history and download URLs used by the Faronics Deploy management platform, which can be abused by adversaries for persistence or remote command execution.
Detects the ProRAM macOS ARM64 Mach-O implant, identified by specific internal codesign strings, download URLs (cloudfront.net/helper), and local file drop paths ($HOME/updated) consistent with the Funnull threat actor's activity.
Detects outbound network traffic associated with StyleSmuggler C2 infrastructure. The rule identifies established TLS connections to a known malicious IP address (99.84.67.186) and monitors for WebSocket-over-TLS traffic using the suspicious SNI 'windwsecurity.run'.
Detects network requests to unpkg.com or npmmirror for 'index.html' files directly under a package path. This behavior deviates from standard package management usage (which typically fetches tarballs or specific JavaScript modules) and is often associated with adversaries using npm packages as hosting infrastructure for phishing landing pages.
Detects ClickFix-style social engineering attacks where users are lured into executing obfuscated commands via terminal copy-paste. The detection monitors for the sequential execution of remote file downloads (e.g., curl, PowerShell) followed immediately by shell history-clearing commands designed to obfuscate the malicious activity. This behavior is associated with macOS crypto-drainers and loaders.
Detects instances where common web server applications (e.g., Apache, Tomcat, IIS, Nginx) or Java runtime environments spawn suspicious child processes like command shells (cmd.exe, powershell.exe, sh, bash) or network utilities (wget, curl). This behavior often indicates exploitation of a web vulnerability, such as Remote Code Execution (RCE), allowing an adversary to execute commands or download further malicious payloads.
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