Account Discovery: Domain Account T1087.002
Tactic: Discovery
Adversaries may attempt to get a listing of domain accounts. This information can help adversaries determine which domain accounts exist to aid in follow-on behavior such as targeting specific accounts which possess particular privileges.
Events covered
32 catalog events are tagged with this technique by at least one rule.
Authoring guide
Patterns shared across the 91 rules above: which fields they filter on, what specific values they look for, and what they exclude. The catalog normalizes field names across vendors so Sigma's Image, Elastic's process.name, and Splunk's process_name collapse into one row. Each rule contributes at most once per row.
Fields filtered most (65 distinct)
The fields most rules look at when detecting this technique. The How column shows the operators authors use (eq, wildcard, regex_match, match) and how often each appears. Sample values are concrete examples to start from, not an exhaustive list.
Top indicator values (1192 distinct)
Specific (field, operator, value) combinations the rules check for, ranked by how many rules under this technique use each one. The Corpus reach column counts how many rules across the entire catalog (any technique) check the same combination. High numbers point to widely-used indicators that are likely noisy on their own; combine them with another condition for useful signal. Blank means the combination is specific to rules under this technique. Click a value to expand the rules under this technique that use it.
Exclusions (79 distinct)
Field/operator/value combinations excluded by rules under this technique (top-level not() clauses), sorted by how many rules exclude each. These are the false-positive paths the community has learned to filter out. A new rule that ignores the high-count entries here will likely fire on the same noisy paths. Click a value to expand the rules under this technique that exclude it.
Rules under this technique
Every rule in the catalog tagged with this technique, grouped by vendor. Click a rule title for its full predicates, exclusions, and indicators.
Sigma 28 rules
- Active Directory Computers Enumeration With Get-AdComputer
- Active Directory Database Snapshot Via ADExplorer
- Active Directory PowerShell module called from a non administrative host
- Active Directory Structure Export Via Csvde.EXE
- AD Privileged Users or Groups Reconnaissance
- ADExplorer Writing Complete AD Snapshot Into .dat File
- BloodHound Collection Files
- Domain group enumeration
- Group discovery (command)
- HackTool - Bloodhound/Sharphound Execution
- Malicious PowerShell Commandlets - PoshModule
- Malicious PowerShell Commandlets - ProcessCreation
- Malicious PowerShell Commandlets - ScriptBlock
- Net.EXE Execution
- Potential Active Directory Reconnaissance/Enumeration Via LDAP
- Potential AD User Enumeration From Non-Machine Account
- PUA - AdFind Suspicious Execution
- PUA - AdFind.EXE Execution
- PUA - Suspicious ActiveDirectory Enumeration Via AdFind.EXE
- Reconnaissance Activity
- Renamed AdFind Execution
- SharpHound host enumeration over Kerberos
- Suspicious Active Directory Database Snapshot Via ADExplorer
- Suspicious Group And Account Reconnaissance Activity Using Net.EXE
- Suspicious SPN enumeration previous to Kerberoasting attack (native commands)
- Suspicious SPN enumeration previous to Kerberoasting attack (PowerShell)
- Suspicious Use of PsLogList
- User properties enumeration via commandline
Elastic 11 rules
- Account or Group Discovery via Built-In Tools
- Active Directory Discovery using AdExplorer
- AdFind Command Activity
- Deprecated - PowerShell Script with Discovery Capabilities
- Enumeration of Administrator Accounts
- Enumeration of Users or Groups via Built-in Commands
- Mounting Hidden or WebDav Remote Shares
- Potential Enumeration via Active Directory Web Service
- PowerShell Suspicious Discovery Related Windows API Functions
- Suspicious Access to LDAP Attributes
- Windows Account or Group Discovery
Splunk 45 rules
- Adfind Commands (PowerShell)
- Adfind Commands (Sysmon)
- Adfind Commands (Windows Event Log)
- Adfind Execution (EDR)
- Adfind Execution (PowerShell)
- Adfind Execution (Sysmon)
- Adfind Execution (Windows Event Log)
- AdsiSearcher Account Discovery
- Common Active Directory Commands (PowerShell)
- Common Active Directory Commands (Sysmon)
- Common Active Directory Commands (Windows Event Log)
- CSVDE Export Active Directory (PowerShell)
- CSVDE Export Active Directory (Sysmon)
- CSVDE Export Active Directory (Windows Event Log)
- Detect AzureHound Command-Line Arguments
- Detect AzureHound File Modifications
- Detect SharpHound Command-Line Arguments
- Detect SharpHound File Modifications
- Detect SharpHound Usage
- Domain Account Discovery with Dsquery
- Domain Account Discovery with Wmic
- Get ADUser with PowerShell
- Get ADUser with PowerShell Script Block
- Get DomainUser with PowerShell
- Get DomainUser with PowerShell Script Block
- GetWmiObject DS User with PowerShell
- GetWmiObject DS User with PowerShell Script Block
- Network Traffic to Active Directory Web Services Protocol
- SchCache Change By App Connect And Create ADSI Object
- SharpHound Enumeration (Windows Event Log)
- SharpHound Keywords (PowerShell)
- User_Domain Enumeration Tool - Windows (PowerShell)
- User_Domain Enumeration Tool - Windows (Sysmon)
- User_Domain Enumeration Tool - Windows (Windows Event Log)
- Windows AD Abnormal Object Access Activity
- Windows AD Privileged Object Access Activity
- Windows Domain Account Discovery Via Get-NetComputer
- Windows Find Domain Organizational Units with GetDomainOU
- Windows Find Interesting ACL with FindInterestingDomainAcl
- Windows Forest Discovery with GetForestDomain
- Windows Get Local Admin with FindLocalAdminAccess
- Windows Linked Policies In ADSI Discovery
- Windows Root Domain linked policies Discovery
- Windows SOAPHound Binary Execution
- Windows Suspect Process With Authentication Traffic