Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
11,839 detections
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Detects malicious file hashes, suspicious process executions involving Node.js/Bun running setup scripts, schtasks/powershell persistence monitoring tasks, and connections to known domains/RPC endpoints associated with threat activity. The query ran without errors in a live tenant.
Detects potential staging and execution of files from the Microsoft Vault directory within AppData, often associated with adversary tooling or credential theft.
Detects web server worker processes or PHP interpreters spawning suspicious child processes associated with reverse shells, network sockets, or reconnaissance commands.
Detects a camera management software binary (e.g. iVMS-4200,
SmartPSS, NVR/DVR viewers, vendor CMS/VMS clients) spawning cmd.exe,
powershell.exe or pwsh.exe. In this campaign the compromised vendor update
channel abused the trusted, signed vendor executable to proxy execution of
follow-on payloads and shell commands, inheriting the vendor signature to
evade application allowlisting and static detection.
SmartPSS, NVR/DVR viewers, vendor CMS/VMS clients) spawning cmd.exe,
powershell.exe or pwsh.exe. In this campaign the compromised vendor update
channel abused the trusted, signed vendor executable to proxy execution of
follow-on payloads and shell commands, inheriting the vendor signature to
evade application allowlisting and static detection.
Detects suspicious post-exploitation activities, reconnaissance, and command execution originating from web server and PHP lineage processes, indicating potential webshell activity or compromised web applications.
Detects reconnaissance commands (whoami, systeminfo) and PowerShell execution spawned as children of remote-access tools (such as AnyDesk, ScreenConnect, TeamViewer/QuickAssist variants, etc.), followed shortly by an outbound network connection to a .top domain from the same device.
Detects non-browser clients or runtimes (such as curl, python, node, or Electron-based apps) successfully connecting to or referencing compromised eMudhra certificate status checker hosts, indicating systems that still trust compromised intermediate certificates.
Detects process command lines containing C2 operator start flags or strings alongside reconnaissance tools or platforms like fofa or skynet.
Detects cmd.exe launching curl.exe with TLS verification disabled, redirect following, an output file, and forced hostname-to-IP resolution, or the PowerShell Invoke-WebRequest with a certificate-check bypass switch, often associated with malicious trojan droppers.
Detects a sequence where an Apache HTTP server spawns a shell (sh, bash, dash) followed within a 6-hour window by network connections to internal ports (LDAP, SMB, Kerberos) from the same device, indicative of web shell activity and potential internal reconnaissance or relay attempts.
Detects when typical discovery commands (whoami, id, uname, ipconfig) are executed under a web server or PHP process parent, potentially indicating post-exploitation activity following a web application compromise. The rule aggregates distinct commands within a 15-minute window to reduce false positives.
Detects AnyDesk being silently installed with the --install and --silent flags or having an unattended-access password configured via the --set-password and _unattended_access parameters, typically piped via stdin from a batch dropper using cmd.exe.
Detects post-exploitation activity targeting PaperCut servers, including shells spawned by the PaperCut Java process or the creation of malicious files (such as .class files in lib/ or .txt webshells in custom/web/) by the Java application.
Detects modifications to Certificate Authority (CA) trust stores, configuration files, or blocklists on Linux and macOS endpoints, followed by trust store update commands within a 30-minute window.
Detects attempts to download the cache_base file using various command-line utilities (wget, curl, node fetch) on a single device, correlating multiple download methods within a 10-minute window or matching known malicious mirror IOCs.
Detects instances where the Claude Code AI assistant CLI or related node processes spawn command-line shells (such as cmd, powershell, bash, sh, zsh), followed by system firewall rule modifications on the same device within a 4-hour window.
Detects behavior where PowerShell or pwsh executes msiexec.exe to silently install an MSI file located in a temporary directory with a GUID-prefixed filename, optionally following a recent download from a remote URL.
Detects PHP SAPI processes accessing /proc/self/mem (or equivalent memory mapping) and subsequently spawning a Unix shell, which is characteristic of web shell activity or exploitation of PHP memory corruption/injection vulnerabilities like zif_system.
Detects the sequence where a private key file is written to the host followed by the execution of ssh.exe with parameters indicating a reverse port forwarding tunnel (-R), an identity file (-i), and background execution (-N or -f) within a 30-minute window.
Detects the execution of two or more distinct Active Directory discovery, credential extraction, or coercion tools (such as NetExec, Kerbrute, noPac, PetitPotam, SoftPerfect Network Scanner, or Impacket scripts) on the same device within a 1-hour window.
Detects PowerShell attempting to install and start the OpenSSH Server on Windows, typically triggered by malicious extensions or backdoors to enable remote SSH access.
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