Threat Actor

Poseidon Group

Also known as: Poseidon Group

Poseidon Group is a Portuguese-speaking threat group that has been active since at least 2005. The group has a history of using information exfiltrated from victims to blackmail victim companies into contracting the Poseidon Group as a security firm.

8
Techniques
0
indicators on this record

Properties

Last source
MITRE ATT&CK
STIX ID
intrusion-set--7ecc3b4f-5cdb-457e-b55a-df376b359446
In Signal since
initial import (Sep 2026)
Retrieved at
2026-11-02T12:53:29+00:00
Type
intrusion-set

MITRE ATT&CK Techniques (8)

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Domain Account (T1087.002)

Adversaries may attempt to get a listing of domain accounts. This information can help adversaries determine which domain accounts exist to aid in fol

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Local Account (T1087.001)

Adversaries may attempt to get a listing of local system accounts. This information can help adversaries determine which local accounts exist on a sys

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Match Legitimate Resource Name or Location (T1036.005)

Adversaries may match or approximate the name or location of legitimate files, Registry keys, or other resources when naming/placing them. This is don

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OS Credential Dumping (T1003)

Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.

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PowerShell (T1059.001)

Adversaries may abuse PowerShell commands and scripts for execution. PowerShell is a powerful interactive command-line interface and scripting environ

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Process Discovery (T1057)

Adversaries may attempt to get information about running processes on a system. Information obtained could be used to gain an understanding of common

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System Network Connections Discovery (T1049)

Adversaries may attempt to get a listing of network connections to or from the compromised system they are currently accessing or from remote systems

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System Service Discovery (T1007)

Adversaries may try to gather information about registered local system services. Adversaries may obtain information about services using tools as wel

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Poseidon Group — Threat Actor Profile — Ninja Signal | Ninja Signal