TACTIC: DISCOVERY

Account Discovery (T1087): Real Cases

MITRE Definition ↗
Adversaries enumerate domain and local user accounts to locate high-privilege targets.

Key Facts

Technique ID
T1087
Discovery
Mapped Cases
5
Primary sources
Related Laws
6
Criminal statutes
  • ATT&CK Technique Identifier: T1087.
  • Tactical Phase: Discovery.
  • Substantiated in 5 primary court prosecution and advisory cases.
  • Linked records cite judicial dockets, plea agreements, or federal advisories.

Verified Evidentiary Case Records (5)

Devastating ransomware attack and data extortion of Change Healthcare (UnitedHealth Group) that paralyzed medical billing, prescription processing, and healthcare provider reimbursement nationwide.

Primary Source Evidence Excerpt: CISA Advisory AA23-353A ¶ 7
"ALPHV BlackCat actors queried active directory LDAP services to identify enterprise domain administrator accounts."
U.S. District Court for the District of Minnesota · SEC CIK 0000731766 View full case dossier →

DarkSide ransomware extortion against the largest refined petroleum pipeline system in the United States, forcing the shutdown of 5,500 miles of fuel pipelines and triggering widespread East Coast fuel shortages.

Kill-Chain Phase: Discovery & Reconnaissance (Domain Trust and Network Mapping)

Attackers executed lightweight discovery utilities including AdFind and BloodHound to map internal network segments, identify domain controllers, and locate corporate billing infrastructure.

U.S. District Court for the Northern District of California · 1:21-mj-00454 View full case dossier →

State-sponsored cyber espionage operators maintained undetected access to the Starwood guest reservation database for four years, deploying remote access trojans and memory scrapers to exfiltrate unencrypted passport numbers, payment cards, and travel itineraries.

Kill-Chain Phase: Discovery (Internal Database Reconnaissance)

Operatives mapped the Starwood reservation database schema, locating tables housing guest profiles and passport identifiers.

U.S. District Court for the District of Maryland · FTC Docket No. C-4712 View full case dossier →

LockBit ransomware affiliates exploited the Citrix Bleed zero-day (CVE-2023-4966) to bypass multi-factor authentication, exfiltrating 43 gigabytes of sensitive internal aerospace data and parts distribution documentation from Boeing parts and distribution business.

Kill-Chain Phase: Discovery (Host Reconnaissance & Network Discovery)

Threat actors used PowerShell and standard Windows utilities to map internal networks and identify file servers supporting commercial parts distribution.

U.S. District Court for the Eastern District of Virginia · SEC Form 8-K Disclosure View full case dossier →

Material cybersecurity breach of Fortune 100 life insurer Prudential Financial, wherein ALPHV/BlackCat threat actors breached corporate administrative workstations and accessed cloud tenant data, filed under the four-day SEC Form 8-K Item 1.05 reporting mandate.

Kill-Chain Phase: Internal Discovery (Cloud Tenant & Directory Reconnaissance)

Threat actors enumerated Active Directory objects, searching for cloud infrastructure secrets and employee directories.

U.S. Securities and Exchange Commission EDGAR · SEC-8K-0001137774-24-000012 View full case dossier →

Commonly Charged Criminal Statutes