Sigma Rules
72 rules found for "reconnaissance"
Private Keys Reconnaissance Via CommandLine Tools
Adversaries may search for private key certificate files on compromised systems for insecurely stored credential
Sysinternals PsService Execution
Detects usage of Sysinternals PsService which can be abused for service reconnaissance and tampering
Webshell Detection With Command Line Keywords
Detects certain command line parameters often used during reconnaissance activity via web shells
Webshell Tool Reconnaissance Activity
Detects processes spawned from web servers (PHP, Tomcat, IIS, etc.) that perform reconnaissance looking for the existence of popular scripting tools (perl, python, wget) on the system via the help commands
Group Membership Reconnaissance Via Whoami.EXE
Detects the execution of whoami.exe with the /group command line flag to show group membership for the current user, account type, security identifiers (SID), and attributes.
Computer System Reconnaissance Via Wmic.EXE
Detects execution of wmic utility with the "computersystem" flag in order to obtain information about the machine such as the domain, username, model, etc.
Hardware Model Reconnaissance Via Wmic.EXE
Detects the execution of WMIC with the "csproduct" which is used to obtain information such as hardware models and vendor information
Local Groups Reconnaissance Via Wmic.EXE
Detects the execution of "wmic" with the "group" flag. Adversaries may attempt to find local system groups and permission settings. The knowledge of local system permission groups can help adversaries determine which groups exist and which users belong to a particular group. Adversaries may use this information to determine which users have elevated permissions, such as the users found within the local administrators group.
Windows Hotfix Updates Reconnaissance Via Wmic.EXE
Detects the execution of wmic with the "qfe" flag in order to obtain information about installed hotfix updates on the system. This is often used by pentester and attacker enumeration scripts
Process Reconnaissance Via Wmic.EXE
Detects the execution of "wmic" with the "process" flag, which adversary might use to list processes running on the compromised host or list installed software hotfixes and patches.
Potential Product Reconnaissance Via Wmic.EXE
Detects the execution of WMIC in order to get a list of firewall and antivirus products
Potential Product Class Reconnaissance Via Wmic.EXE
Detects the execution of WMIC in order to get a list of firewall, antivirus and antispywware products. Adversaries often enumerate security products installed on a system to identify security controls and potential ways to evade detection or disable protection mechanisms. This information helps them plan their next attack steps and choose appropriate techniques to bypass security measures.
Service Reconnaissance Via Wmic.EXE
An adversary might use WMI to check if a certain remote service is running on a remote device. When the test completes, a service information will be displayed on the screen if it exists. A common feedback message is that "No instance(s) Available" if the service queried is not running. A common error message is "Node - (provided IP or default) ERROR Description =The RPC server is unavailable" if the provided remote host is unreachable
Potential Unquoted Service Path Reconnaissance Via Wmic.EXE
Detects known WMI recon method to look for unquoted service paths using wmic. Often used by pentester and attacker enumeration scripts
System Disk And Volume Reconnaissance Via Wmic.EXE
An adversary might use WMI to discover information about the system, such as the volume name, size, free space, and other disk information. This can be done using the 'wmic' command-line utility and has been observed being used by threat actors such as Volt Typhoon.
SSHD Error Message CVE-2018-15473
Detects exploitation attempt using public exploit code for CVE-2018-15473
Potential Devil Bait Malware Reconnaissance
Detects specific process behavior observed with Devil Bait samples
Potential APT FIN7 Reconnaissance/POWERTRASH Related Activity
Detects specific command line execution used by FIN7 as reported by WithSecureLabs for reconnaissance and POWERTRASH execution
Exploitation Activity of CVE-2025-59287 - WSUS Suspicious Child Process
Detects the creation of command-line interpreters (cmd.exe, powershell.exe) as child processes of Windows Server Update Services (WSUS) related process wsusservice.exe. This behavior is a key indicator of exploitation for the critical remote code execution vulnerability such as CVE-2025-59287, where attackers spawn shells to conduct reconnaissance and further post-exploitation activities.
Grixba Malware Reconnaissance Activity
Detects execution of the Grixba reconnaissance tool based on suspicious command-line parameter combinations. This tool is used by the Play ransomware group for network enumeration, data gathering, and event log clearing.
Potential Registry Reconnaissance Via PowerShell Script
Detects PowerShell scripts with potential registry reconnaissance capabilities. Adversaries may interact with the Windows registry to gather information about the system credentials, configuration, and installed software.
CMD Shell Output Redirect
Detects the use of the redirection character ">" to redirect information on the command line. This technique is sometimes used by malicious actors in order to redirect the output of reconnaissance commands such as "hostname" and "dir" to files for future exfiltration.
Potential Password Reconnaissance Via Findstr.EXE
Detects command line usage of "findstr" to search for the "passwords" keyword in a variety of different languages
HTML File Opened From Download Folder
Detects web browser process opening an HTML file from a user's Downloads folder. This behavior is could be associated with phishing attacks where threat actors send HTML attachments to users. When a user opens such an attachment, it can lead to the execution of malicious scripts or the download of malware. During investigation, analyze the HTML file for embedded scripts or links, check for any subsequent downloads or process executions, and investigate the source of the email or message containing the attachment.