1200KM / tool
Responder — Attack Tool
Responder is an open source tool used for LLMNR, NBT-NS and MDNS poisoning, with built-in HTTP/SMB/MSSQL/FTP/LDAP rogue authentication server supporting NTLMv1/NTLMv2/LMv2, Extended Security NTLMSSP and Basic HTTP authentication.
Tool identity and evidence
Included because the active pinned ATT&CK object has type tool. This is an upstream classification, not an assurance of benignness or a recommendation to run it.
Aliases: Responder
Existing author guides
No reviewed association in this snapshot.
Primary documentation
No reviewed association in this snapshot.
Connected ecosystem references
Linked tags
Documented actor use
Explicit actor-to-software uses relationships in the pinned ATT&CK source. These links are historical behavior context, not attribution of current events.
- APT28 · G0007 · Pinned relationship source (relationship--89363ca8-1cf3-4c40-972c-6e2787a05b43)
- Lazarus Group · G0032 · Pinned relationship source (relationship--ecfb4c82-5097-4273-8aeb-007922e92940)
- Ember Bear · G1003 · Pinned relationship source (relationship--743cd60e-8fa7-40ad-b99d-075da089ba05)
Technique-specific simulations and detections
Detection links describe the associated behavior, not independently verified tool-specific signatures.
Telemetry context
Derived from the explicitly linked TTPs; not proof of sensor coverage for this tool.
Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.