Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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IDS Classtypes
1
Detects the installation or execution of common remote access tools (e.g., AnyDesk, ScreenConnect, Atera, Splashtop) using silent or unattended installation flags. This rule explicitly excludes activity originating from known administrative and management platforms such as Microsoft Intune and SCCM.
Detects a Go toolchain process (go.exe) spawning potentially suspicious child processes such as secondary 'go run' commands or Node.js execution. This behavior is indicative of a malicious Go module executing embedded or decrypted code during the build process, a tactic seen in supply chain attacks targeting development environments.
Detects the use of legitimate Windows binaries (certutil.exe and bitsadmin.exe) to download files from remote URLs to sensitive or common staging directories (Temp, AppData, ProgramData). Attackers frequently abuse these built-in tools for 'living off the land' (LotL) to retrieve malicious payloads or secondary tools while bypassing traditional signature-based detection.
Detects the use of rundll32.exe to invoke the MiniDump function of comsvcs.dll targeting the lsass.exe process. This technique is a well-known living-off-the-land (LotL) method used by adversaries to create a memory dump of LSASS, which can then be exfiltrated and analyzed offline using tools like Mimikatz to extract credentials.
Detects the execution of msbuild.exe targeting project files (.csproj, .proj, .xml) located in user-writable directories such as Temp or Downloads, or containing command-line indicators of inline C# task execution (e.g., UsingTask, CodeTaskFactory). This behavior is commonly used for proxy execution and bypassing application allow-listing via LOLBAS.
Detects WmiPrvSE.exe spawning child processes within 120 seconds of a Type 3 (Network) logon event. This behavior is a common indicator of remote command execution, frequently used by lateral movement tools like Impacket's wmiexec or similar WMI-based remote execution frameworks.
Detects the creation of scheduled tasks using Event ID 4698 or command-line execution of schtasks.exe. The rule specifically looks for tasks created in suspicious paths such as AppData or ProgramData, or tasks configured to run with highest privileges and/or marked as hidden, which are common indicators of persistence mechanisms used by adversaries.
Detects lateral movement techniques leveraging Windows Management Instrumentation (WMI). The rule identifies instances where the WMI provider host, WmiPrvSE.exe, spawns common administrative or interactive shell tools (e.g., cmd.exe, powershell.exe). This pattern is consistent with the abuse of Win32_Process.Create() via WMI/DCOM/RPC for remote command execution, a method frequently utilized by frameworks like Impacket (wmiexec.py) for fileless, agentless lateral movement.
This rule detects the use of native Windows utilities (vssadmin, wmic, wbadmin, bcdedit) to perform actions associated with ransomware, such as deleting volume shadow copies, deleting the backup catalog, or disabling system recovery features. This is a common precursor to data encryption to prevent the user from restoring files.
Detects the abuse of signed Windows system binaries (LOLBins: certutil, mshta, regsvr32, rundll32, bitsadmin, msiexec) through the identification of command-line arguments that suggest malicious activity, such as downloading remote content, decoding files, executing scriptlets, or loading DLLs from temporary storage directories.
Detects attempts to bypass the Antimalware Scan Interface (AMSI) in PowerShell. The rule looks for command-line arguments referencing AMSI-related memory structures, methods, and DLLs such as AmsiUtils, AmsiScanBuffer, AmsiInitFailed, and amsi.dll. Bypassing AMSI is a common technique used by attackers to execute malicious scripts and deploy fileless payloads, such as Cobalt Strike or Sliver, while avoiding detection by endpoint security solutions.
Detects the use of data archival utilities (7zip, WinRAR) or command-line cloud synchronization tools (Rclone) to stage files in common temporary directories, immediately followed by network connections to known cloud storage endpoints. This pattern is characteristic of pre-encryption exfiltration activities often seen in ransomware campaigns.
Detects potential process injection attempts (e.g., Early Bird APC injection or process hollowing) where a process is spawned in a suspended state, followed shortly by a remote-thread or QueueUserAPC injection primitive targeting that same process. The rule correlates process creation events with subsequent API calls while excluding known legitimate patterns like .NET runtime operations, system updaters, and EDR/AV security components.
Detects potential process injection attempts (e.g., Early Bird APC injection or process hollowing) where a process is spawned in a suspended state, followed shortly by a remote-thread or QueueUserAPC injection primitive targeting that same process. The rule correlates process creation events with subsequent API calls while excluding known legitimate patterns like .NET runtime operations, system updaters, and EDR/AV security components.
Detects the execution of reg.exe with the 'save' command to extract the SAM, SYSTEM, or SECURITY registry hives to disk. This technique is commonly used by attackers to offline extract credential hashes, facilitating pass-the-hash attacks and lateral movement.
Detects the execution of multiple distinct host reconnaissance commands (e.g., systeminfo, whoami, ipconfig, AV/EDR checks, and domain enumeration) within a short window (10 minutes) originating from the same parent process. This pattern is characteristic of automated reconnaissance collection, often performed during the initial phases of an attack or as part of a C2 workflow. The rule includes exclusions for common administrative, monitoring, and RMM tools to reduce false positives.
Detects the execution of PowerShell with encoded commands (e.g., -EncodedCommand or -enc) combined with common download cradle indicators such as IEX, Net.WebClient, or DownloadString. This combination is highly indicative of fileless malware execution, initial access payload staging, or defense evasion techniques often employed by threat actors to bypass command-line monitoring.
Detects the abuse of the built-in Windows utility 'certutil.exe' to download remote files using URL cache functionality or to deobfuscate base64-encoded payloads. This is a common LOLBin (Living-off-the-Land Binary) technique used in phishing loaders, malware delivery, and post-exploitation toolkits.
Detects the creation of WMI permanent event subscriptions, including the instantiation of __EventFilter, __EventConsumer, and __FilterToConsumerBinding classes. This mechanism is frequently used by adversaries for fileless and reboot-resilient persistence, as it allows for arbitrary code execution triggered by system events.
Detects lateral movement activities involving the use of PsExec-style tools or the manual creation of remote services to execute commands. This behavior often leverages SMB admin shares (ADMIN$, C$) to drop and execute binaries or scripts, a technique frequently observed in ransomware campaigns and red team engagements.
Detects the execution of legitimate developer utilities msbuild.exe, regasm.exe, and regsvcs.exe in manners consistent with malicious proxy execution. This includes the use of inline tasks in project files, remote network-sourced project files, or specific command-line arguments (such as /codebase or /unregister) that suggest the abuse of these binaries to execute arbitrary code or bypass application control mechanisms, while excluding known legitimate developer-related parent processes and build workflows.
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