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ATT&CK Technique

Email Account

T1087.003 · discovery

Adversaries may attempt to get a listing of email addresses and accounts. Adversaries may try to dump Exchange address lists such as global address lists (GALs). In on-premises Exchange and Exchange Online, the Get-GlobalAddressList PowerShell cmdlet can be used to obtain email addresses and accounts from a domain using an authenticated session.

In Google Workspace, the GAL is shared with Microsoft Outlook users through the Google Workspace Sync for Microsoft Outlook (GWSMO) service. Additionally, the Google Workspace Directory allows for users to get a listing of other users within the organization.

WindowsOffice Suite
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Actors Using This

6
iranOilRig
iranAPT35
iranAPT39
predominantly_english_speaking_youth_organized_crimeLAPSUS$
chinaSalt Typhoon
chinaSilk Typhoon
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Likely Attack Path

Techniques the same actors pair with this one distinctively - those showing up among actors who use this technique noticeably more than across all actors (lift > 1.15), grouped by kill-chain phase. The × is that lift multiplier; the shared-actor count is in the tooltip. A near-universal technique pairs with everything at baseline, so its list is short by design.
reconnaissance earlier
T1589.002 · Email Addresses ×8.62T1589 · Gather Victim Identity Information ×7.93
resource-development earlier
T1584.006 · Web Services ×7.93
persistence earlier
T1098.005 · Device Registration ×16.53T1098.002 · Additional Email Delegate Permissions ×11.90
privilege-escalation earlier
T1546.001 · Change Default File Association ×13.22T1546.011 · Application Shimming ×11.90
credential-access earlier
T1187 · Forced Authentication ×15.87T1555.004 · Windows Credential Manager ×14.88T1110.004 · Credential Stuffing ×13.22
lateral-movement later
T1550.004 · Web Session Cookie ×17.00
collection later
T1213.002 · Sharepoint ×19.83T1114.003 · Email Forwarding Rule ×18.03T1213.003 · Code Repositories ×9.15
command-and-control later
T1071.003 · Mail Protocols ×7.93
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Detection Coverage

0/6 layers
Coverage across standard detection surfaces. Rows marked none have no rule of that type mapped. Some are real blind spots worth closing; others are simply not applicable to this technique (e.g. YARA matches malware files, not network behaviour).
Behavioral / log (Sigma) none
Analytics (MITRE CAR) none
Runtime / container (Falco) none
File / malware (YARA) none
Network (Suricata/Snort) none
Vuln scan (Nuclei) none
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CVETechnique ActorTool Family
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