Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
345 detections
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This rule detects process executions that exhibit patterns commonly associated with China Chopper-like tiny webshells, specifically when they are spawned by the w3wp.exe process (IIS worker process). The detection logic looks for specific command-line arguments that include common discovery and system information commands such as 'ipconfig', 'quser', 'whoami', 'c:', 'cd', 'dir', and echo commands, often used by webshells to interact with the compromised system.
Detects suspicious child processes spawned by web servers, indicating potential webshell activity used for credential dumping, exfiltration, or other post-exploitation actions. The rule looks for specific command-line patterns and executables commonly associated with these malicious activities originating from known web server processes.
WinPEAS is a widely used privilege escalation and discovery tool. This rule detects the execution of winPEAS by monitoring process creation events for specific filenames and command-line arguments. It also looks for command-line options related to information gathering (applications, browser, events, files, processes, services, windows credentials) and attempts to download the tool from its GitHub repository. The rule aims to identify potential privilege escalation attempts and extensive system discovery activities by adversaries.
This rule detects suspicious command-line activity originating from common web server processes, indicative of web shell usage for reconnaissance and system interaction. It looks for specific utilities and command-line arguments often used by attackers to discover system information, user accounts, network configurations, and execute arbitrary commands through a compromised web server.
This detection rule identifies the execution of the Purple Knight tool, a free Active Directory security assessment utility developed by Semperis. Purple Knight is designed to scan for AD vulnerabilities, misconfigurations, and common attack paths. While it is a legitimate tool used by defenders, its execution in production environments may also indicate red team activity or unauthorized reconnaissance by adversaries attempting to map domain weaknesses.
Detects patterns found in process executions cause by China Chopper like tiny (ASPX) webshells
Detects certain parent child patterns found in cases in which a web shell is used to perform certain credential dumping or exfiltration activities on a compromised system
WinPEAS is a script that search for possible paths to escalate privileges on Windows hosts. The checks are explained on book.hacktricks.xyz
This detection rule identifies the execution of the Purple Knight tool, a free Active Directory security assessment utility developed by Semperis. Purple Knight is designed to scan for AD vulnerabilities, misconfigurations, and common attack paths. While it is a legitimate tool used by defenders, its execution in production environments may also indicate red team activity or unauthorized reconnaissance by adversaries attempting to map domain weaknesses.
This rule detects the use of the GraphRunner tool's Invoke-GraphRecon command to enumerate permissions and conditional access data within the Microsoft Graph API. It specifically looks for a sequence of three API calls: 'estimateAccess', '/me', and 'policies/authorizationPolicy' originating from the same IP address and within a 5-minute window. This activity is indicative of an attacker or red teamer performing reconnaissance on an Azure AD environment.
This rule detects the enumeration of both users and group members within an Entra ID (formerly Azure Active Directory) tenant via the Microsoft Graph API. It specifically looks for two distinct HTTP GET requests originating from the same IP address and within a 15-minute window: one targeting the `/v1.0/users` endpoint and another targeting the `/v1.0/groups/*/members` endpoint. This activity is often associated with reconnaissance efforts, such as those performed by tools like GraphRunner, to map out an organization's user and group structure.
Estimate Access is an undocumented API in MS Graph and is used in the following GraphRunner functions Get-UpdatableGroups, Get-DynamicGroups and Invoke-GraphRecon. Although not inherently malicious, it does submit an action and then determines if the user can perform it
Identify the use of the user API call to collect a listing of users. This can be chatty due to other commands calling this single API.
This detects when the search/query endpoint is called which can be used for enumeration of items like SharePoint site URLs. GraphRunner contains a function called Get-SharePointSiteURLs but other tools may as well.
Identify enumeration of inboxes across the Entra ID tenant. This detection is based on the Invoke-GraphOpenInboxFinder in GraphRunner but the concepts are applicable to other tools that scan for accessible inboxes.
Detects enumeration of local system accounts on Linux. This information can help adversaries determine which local accounts exist on a system to aid in follow-on behavior. The rule identifies common commands and file accesses used for this purpose, such as 'lastlog', 'id', 'lsof -u', and utilities like 'cat', 'head', 'tail' accessing '/etc/passwd', '/etc/shadow', or '/etc/sudoers'.
Detects the execution of SOAPHound, a .NET tool for collecting Active Directory data, using specific command-line arguments that may indicate an attempt to extract sensitive AD information. The rule specifically looks for command-line arguments related to building caches, dumping bloodhound data, certificate dumping, and DNS dumping, combined with arguments for cache filenames or output directories.
Detects system discovery activity carried out by Pikabot, such as network, user information, and domain groups. The malware Pikabot has been observed using this technique as part of its C2-botnet registration with a short collection time frame (less than 1 minute). The rule specifically looks for `ipconfig.exe /all`, `netstat.exe -aon`, and `whoami.exe /all` commands executed by processes whose grandparent image ends with `rundll32.exe` or parent image ends with `SearchFilterHost.exe` or `SearchProtocolHost.exe`.
This rule detects the loading of the 'Microsoft.ActiveDirectory.Management.dll' DLL via PowerShell's 'Import-Module' or its alias 'ipmo'. This DLL is part of the Active Directory module for PowerShell and is frequently used by attackers to perform Active Directory enumeration, especially in environments where RSAT tools are not installed or administrative privileges are not readily available. The detection focuses on the command line payload containing both the module import command and the specific DLL name.
Detects the execution of ADRecon.ps1, a PowerShell script used for Active Directory reconnaissance. The rule identifies specific function names and a default report filename commonly found within the ADRecon script. This tool has been reported to be actively used by the FIN7 threat group.
This rule detects the execution of the `nslookup` command specifically querying for LDAP service records (`_ldap._tcp.dc._msdcs.`). This type of query is often used during the reconnaissance phase by attackers to discover Active Directory domain controllers and their associated services within a network. This activity can indicate an adversary attempting to map out the network infrastructure.
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