Automation · API / MCP 中文

Technique note · T1199

Trusted Relationship

Adversaries may breach or otherwise leverage organizations who have access to intended victims. Access through trusted third party relationship abuses an existing connection that may not be protected or receives less scrutiny than standard mechanisms of gaining access to a network. Organizations often grant elevated access to second or third-party external providers in order to allow them to manage internal systems as well as cloud-based environments. Some examples of these relationships include IT services contractors, managed security providers, infrastructure contractors (e.g. HVAC, elevators, physical security). The third-party provider's access may be intended to be limited to the infrastructure being maintained, but may exist on the same network as the rest of the enterprise. As such, Valid Accounts used by the other party for access to internal network systems may be compromised and used. In Office 365 environments, organizations may grant Microsoft partners or resellers delegated administrator permissions. By compromising a partner or reseller account, an adversary may be able to leverage existing delegated administrator relationships or send new delegated administrator offers to clients in order to gain administrative control over the victim tenant.

ATT&CK T1199 platforms — Status Active Version 20.1

Adversaries may breach or otherwise leverage organizations who have access to intended victims. Access through trusted third party relationship abuses an existing connection that may not be protected or receives less scrutiny than standard mechanisms of gaining access to a network. Organizations often grant elevated access to second or third-party external providers in order to allow them to manage internal systems as well as cloud-based environments. Some examples of these relationships include IT services contractors, managed security providers, infrastructure contractors (e.g. HVAC, elevators, physical security). The third-party provider's access may be intended to be limited to the infrastructure being maintained, but may exist on the same network as the rest of the enterprise. As such, Valid Accounts used by the other party for access to internal network systems may be compromised and used.1 In Office 365 environments, organizations may grant Microsoft partners or resellers delegated administrator permissions. By compromising a partner or reseller account, an adversary may be able to leverage existing delegated administrator relationships or send new delegated administrator offers to clients in order to gain administrative control over the victim tenant.2

  1. CISA IT Service Providers
  2. Office 365 Delegated Administration

Groups using this technique

GroupNameCountry
grp_g1005POLONIUM—
grp_g1041Sea Turtle—
grp_g1045Salt Typhoon—
grp_g0115GOLD SOUTHFIELD—
grp_g1039RedCurlRussia
grp_g1004LAPSUS$—
grp_g1055VOID MANTICORE—
grp_g1059NIMBUS MANTICORE—
grp_g0125HAFNIUM—
grp_g0045menuPass—
grp_g0007APT28Russia
grp_g0016APT29Russia
grp_g0027Threat Group-3390China
grp_g0034Sandworm TeamRussia

Claims

No public claim points at this technique yet.

Auto-ingested and not human-reviewed; confidence and validity read by citation.