T1087 Account Discovery — ATT&CK Technique
Adversaries may attempt to get a listing of valid accounts, usernames, or email addresses on a system or within a compromised environment. This information can help adversaries determine which accounts exist, which can aid in follow-on behavior such as brute-forcing, spear-phishing attacks, or account takeovers (e.g., Valid Accounts). Adversaries may use several methods to enumerate accounts, including abuse of existing tools, built-in commands, and potential misconfigurations that leak account names and roles or permissions in the targeted environment. For examples, cloud environments typically provide easily accessible interfaces to obtain user lists. On hosts, adversaries can use default PowerShell and other command line functionality to identify accounts. Information about email addresses and accounts may also be extracted by searching an infected system’s files.
Detection coverage (20)
- Potential Pikabot Discovery Activity high
- SharpHound Recon Account Discovery high
- PUA - Seatbelt Execution high
- Hacktool Ruler high
- Uncommon Connection to Active Directory Web Services medium
- Malicious PowerShell Commandlets - PoshModule high
- Malicious PowerShell Commandlets - ScriptBlock high
- HackTool - SOAPHound Execution high
- HackTool - winPEAS Execution high
- Network Reconnaissance Activity high
- Malicious PowerShell Commandlets - ProcessCreation high
- Potentially Suspicious EventLog Recon Activity Using Log Query Utilities medium
- Suspicious Use of PsLogList medium
- Chopper Webshell Process Pattern high
- Webshell Hacking Activity Patterns high
- Webshell Detection With Command Line Keywords high
- Enumerate Users Local Group Using Telegram
- Windows Account Discovery for Sam Account Name
- Windows Account Discovery With NetUser PreauthNotRequire
- Windows Special Privileged Logon On Multiple Hosts