Threat Actor

FIN4

Also known as: FIN4

[FIN4](https://attack.mitre.org/groups/G0085) is a financially-motivated threat group that has targeted confidential information related to the public financial market, particularly regarding healthcare and pharmaceutical companies, since at least 2013.(Citation: FireEye Hacking FIN4 Dec 2014)(Citation: FireEye FIN4 Stealing Insider NOV 2014) [FIN4](https://attack.mitre.org/groups/G0085) is unique in that they do not infect victims with typical persistent malware, but rather they focus on capturing credentials authorized to access email and other non-public correspondence.(Citation: FireEye Hacking FIN4 Dec 2014)(Citation: FireEye Hacking FIN4 Video Dec 2014)

12
Techniques

Properties

stix_id
intrusion-set--d0b3393b-3bec-4ba3-bda9-199d30db47b6
signal_observed_at
2026-09-11T17:55:00+00:00
type
intrusion-set

MITRE ATT&CK Techniques (12)

Email Hiding Rules

Adversaries may use email rules to hide inbound emails in a compromised user's mailbox. Many email clients allow users to create inbox rules for vario

GUI Input Capture

Adversaries may mimic common operating system GUI components to prompt users for credentials with a seemingly legitimate prompt. When programs are exe

Keylogging

Adversaries may log user keystrokes to intercept credentials as the user types them. Keylogging is likely to be used to acquire credentials for new ac

Malicious File

An adversary may rely upon a user opening a malicious file in order to gain execution. Users may be subjected to social engineering to get them to ope

Malicious Link

An adversary may rely upon a user clicking a malicious link in order to gain execution. Users may be subjected to social engineering to get them to cl

Multi-hop Proxy

Adversaries may chain together multiple proxies to disguise the source of malicious traffic. Typically, a defender will be able to identify the last p

Remote Email Collection

Adversaries may target an Exchange server, Office 365, or Google Workspace to collect sensitive information. Adversaries may leverage a user's credent

Spearphishing Attachment

Adversaries may send spearphishing emails with a malicious attachment in an attempt to gain access to victim systems. Spearphishing attachment is a sp

Spearphishing Link

Adversaries may send spearphishing emails with a malicious link in an attempt to gain access to victim systems. Spearphishing with a link is a specifi

Valid Accounts

Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense

Visual Basic

Adversaries may abuse Visual Basic (VB) for execution. VB is a programming language created by Microsoft with interoperability with many Windows techn

Web Protocols

Adversaries may communicate using application layer protocols associated with web traffic to avoid detection/network filtering by blending in with exi

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FIN4 — Threat Actor Profile — Ninja Signal | Ninja Signal