Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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IDS Classtypes
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This rule detects a suspicious sequence of events where a process named RMM.Agent.exe executes a PowerShell command to download and install 'ClientSetup.msi' via msiexec.exe, followed closely by the execution of a ScreenConnect client process. This chain of activity is consistent with unauthorized or potentially malicious deployment of ScreenConnect (ConnectWise Control) for persistent remote access.
Detects the spawning of shells, interpreters, or system reconnaissance binaries by primary Citrix NetScaler ADC/Gateway processes (httpd, nsppe, aslearning). This behavior is strongly indicative of post-exploitation activity, such as remote command execution, often following the exploitation of vulnerabilities like CVE-2026-88771.
Detects Microsoft Office applications (Word, Excel, Outlook, PowerPoint) spawning common LOLBins or command-line interpreters. This behavior is frequently associated with malicious macros or exploitation attempts delivering secondary payloads.
Detects ClickFix-style attacks where a user is tricked into copying and pasting malicious, often obfuscated, commands into the Windows Run dialog or a command prompt. The detection identifies suspicious parent processes (like explorer.exe) spawning shell interpreters (powershell.exe, cmd.exe, mshta.exe) with inline encoded payloads or remote content retrieval patterns. It correlates these process executions with recent entries in the Windows RunMRU registry key to identify commands triggered via the Run dialog.
Detects activity associated with the MALFEX npm supply-chain campaign (also known as Overlord/movinlike). This rule performs a sweep for known malicious file hashes, suspicious process command lines, outbound network connections to malicious domains or IPs, and email communications from identified adversary-controlled accounts.
Detects instances where the Windchill Java/Tomcat application server process spawns command-line interfaces such as cmd.exe, powershell.exe, or bash.exe. This activity is indicative of post-exploitation behavior associated with CVE-2026-12569, where an attacker exploits a deserialization vulnerability to execute arbitrary commands, often for the purpose of dropping web shells.
Detects a potential web shell deployment by identifying a web server process creating or modifying a file in common web directory locations, followed shortly (within 10 minutes) by the execution of that same file.
Detects the execution of Python-based tunneling tools located in the 'C:\Users\Public\indigo\' directory, which is a known staging location for malicious implants used in covert tunneling operations.
Detects instances where a PowerShell session is initiated from Windows Terminal (wt.exe) and subsequently executes a command to download an archive file (e.g., .zip) using common download cmdlets or methods. This pattern is often indicative of an attacker downloading and staging malicious payloads.
Detects various indicators of compromise (IOCs) including known malicious file hashes, suspicious file names commonly associated with staging or initialization in web directories, and network communication to known malicious domains or URLs. It also monitors process execution command lines for references to these IOCs, excluding common browser processes.
Detects a behavioral chain where PowerShell stages a hidden base64-encoded command and schedules a VBScript task, or PowerShell fetches an upgrade.txt file via web client methods for execution.
Detects WmiPrvSE.exe spawning a child process executable from a user-writable AppData\Local folder, which often results from a .NET process invoking ManagementClass(Win32_Process).Create.
Detects WmiPrvSE.exe spawning a child process executable from a user-writable AppData\Local folder, which often results from a .NET process invoking ManagementClass(Win32_Process).Create.
Detects PowerShell execution performing port checks across multiple internal hosts using Test-NetConnection in a looping construct with output redirected to a log file, indicative of post-compromise reconnaissance (such as LONEPAGE scanning).
Detects PowerShell execution performing port checks across multiple internal hosts using Test-NetConnection in a looping construct with output redirected to a log file, indicative of post-compromise reconnaissance (such as LONEPAGE scanning).
Detects the execution of MATCHBOIL malware variants (PlannerAssistantManager.exe or RegularExpressionExplorer.exe) using specific command-line arguments (-auto, -plans, -renew) which trigger C&C logic.
This rule monitors endpoint telemetry for indicators of compromise (IOCs) associated with known malicious activity. It checks for file creation, process execution, and network connections that match a defined list of malicious file hashes (SHA256, SHA1, MD5), C2 IP addresses, and malicious domains or URL patterns.
Detects a suspected ClickFix social engineering attack where a user is tricked into pasting malicious commands into Windows Terminal, leading to a PowerShell download, followed by the appearance of specific known malicious artifacts (LockScreenContentServer.exe, dui70.dll, or 1.bat) within 15 minutes on the same device.
Detects potentially malicious use of rundll32.exe by monitoring for execution from suspicious directory paths (e.g., Temp, AppData, Downloads), execution with arguments missing common legitimate entry points, unexpected network connections originating from rundll32.exe, or rundll32.exe spawning child processes (excluding known safe binaries like conhost.exe or werfault.exe).
Detects evidence of exploitation and post-exploitation activity related to CVE-2026-59310, an unauthenticated RCE vulnerability in the VMware vCenter Syslog Server. The rule monitors for suspicious child processes spawned by vmsyslogcollector, directory traversal patterns in command lines, and persistence mechanisms involving SSH authorized_keys modification, cron job creation, or systemd unit deployment on the VCSA shell.
This rule detects potential command injection attacks targeting the Zimbra 'swatchdog' service, specifically involving the abuse of SNMP trap notifications (CVE-2026-73570). The attack works by injecting malicious shell metacharacters into the 'zimbra-MIB::zmServiceName' argument, which is processed by a Perl-invoked 'swatchdog' script. The rule monitors process execution events for shell commands spawned by the swatchdog utility that contain suspicious shell operators and the targeted MIB parameter.
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