Emotet

Overview

Emotet is a modular malware family that, per MITRE ATT&CK, is primarily used as a downloader for other malware such as TrickBot and IcedID. It first emerged in June 2014, initially targeting the financial sector, and later expanded to many other industries. Although it began as a banking trojan, it became best known as a 'loader' that establishes a foothold and then pulls in additional payloads. Its operators were known for hijacking real email threads to make malicious messages look trustworthy. An international law-enforcement action disrupted its infrastructure in early 2021, though activity has been observed at times since.

Known aliases

Threat reports may refer to this family under multiple names:

• Emotet
• Geodo

MITRE ATT&CK Techniques

Observed techniques used by this family, mapped to the MITRE ATT&CK framework:

Tactical Mitigations

Based on the techniques used by this family, consider the following defensive strategies:

• T1059.005: Restrict execution of scripting languages such as PowerShell, VBScript, or Python to authorized administrators. Enforce Script Block Logging.
• T1071.001: Implement web filtering and SSL/TLS inspection to detect malicious command and control (C2) traffic hiding in HTTP/HTTPS.
• T1566.001: Scan email attachments for malicious macros, scripts, or suspicious archive files.

Indicators of Compromise

Public indicators drawn from CISA advisories and vendor reporting. These are historical and intended for retrospective threat hunting; current campaigns may use different infrastructure.

Delivery vectors

• Macro-enabled Office documents
• OneNote attachments
• Password-protected ZIPs in phishing reply-chain emails

Network indicators

• HTTP POST to C2 with cookie-style payload
• Tier-1 C2 over ports 80/443/8080

Persistence mechanisms

• Registry Run keys
• Scheduled tasks
• Service installation under randomized name

Detection Guidance

Detection ideas drawn from public reporting. Tune to your environment before deploying.

• Suricata/ETPRO Emotet C2 rules
• YARA rule Emotet_v4 from CISA AA22-110A
• Sysmon Event ID 1 for randomly named binaries spawned by WINWORD.EXE or OUTLOOK.EXE

Generated Detections (Boilerplate)

These YARA and Sigma rules are auto-generated based on the family name and aliases. They must be heavily tuned before deployment in a production environment.

YARA Rule

rule MALWARE_WIN_EMOTET {
    meta:
        description = "Detects Emotet (loader)"
        author = "SystemHelpdesk Boilerplate Generator"
        date = "2026-07-06"
    strings:
        $s1 = "emotet" ascii wide nocase
        $s2 = "emotet" ascii wide nocase
        $s3 = "geodo" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

Sigma Rule

title: Suspicious Emotet Activity
id: 5333f9a7036ae7d10e81cb5fc558a20d
status: experimental
description: Detects generic indicators of the emotet malware family.
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains:
            - "*emotet*"
            - "*emotet*"
            - "*geodo*"
    condition: selection
level: medium

Containment & Response Steps

Ordered checklist for responders. Adapt to your environment and engage professional support for active incidents.

1. Isolate affected host from network
2. Block known C2 IPs at perimeter
3. Reset credentials cached on the host
4. Hunt for lateral movement via SMB and WMI
5. Audit for follow-on payloads (TrickBot, Qbot, Cobalt Strike)

What to Avoid

Common mistakes during response to this family that can destroy evidence, spread the infection, or worsen recovery.

1. Do not simply delete the dropper without checking for secondary payloads
2. Do not re-enable macros until policy hardening is verified
3. Do not assume single-host containment; Emotet spreads laterally

References & External Analysis

• MITRE ATT&CK: Emotet (S0367)
• CISA Advisory
• Search "emotet" on VirusTotal (External Analysis)

North American Authority Advisory (CISA / NIST)

The Cybersecurity and Infrastructure Security Agency (CISA) has published an official US federal advisory on this family, which can be mapped to NIST Cybersecurity Framework (CSF) incident response controls: https://www.cisa.gov/news-events/alerts/2020/10/06/emotet-malware

Frequently Asked Questions

Related Families (Category: loader)

Explore other malware families in the same category:

• Gamarue
• Darkgate
• Pikabot
• Smokeloader

Machine-readable

Get this profile as JSON: https://jordan123234-malware-families-explorer.static.hf.space/api/emotet.json

Ecosystem & Interactive Environments

This profile is part of the Malware Families Catalog, a public dataset of 2,899 malware families. The catalog is also published across our ecosystem: Hugging Face, Kaggle, Zenodo, Replit, StackBlitz, CodeSandbox, and CodePen.