Emotet Loader Execution Via .LNK File

Description

Detects the Emotet Epoch4 loader as reported by @malware_traffic back in 2022. The ".lnk" file was delivered via phishing campaign.

Query · sigma

selection:
  ParentImage|endswith:
  - \cmd.exe
  - \explorer.exe
  - \powershell.exe
  Image|endswith:
  - \cmd.exe
  - \powershell.exe
  CommandLine|contains|all:
  - findstr
  - .vbs
  - .lnk
condition: selection

Known false positives

  • Unlikely
Raw source Emotet Loader Execution Via .LNK File · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Emotet Loader Execution Via .LNK File
id: 1f32d820-1d5c-43fe-8fe2-feef0c952eb7
status: test
description: |
    Detects the Emotet Epoch4 loader as reported by @malware_traffic back in 2022.
    The ".lnk" file was delivered via phishing campaign.
references:
    - https://web.archive.org/web/20220422215221/https://twitter.com/malware_traffic/status/1517622327000846338
    - https://twitter.com/Cryptolaemus1/status/1517634855940632576
    - https://tria.ge/220422-1pw1pscfdl/
    - https://tria.ge/220422-1nnmyagdf2/
author: '@kostastsale'
date: 2022-04-22
modified: 2024-08-15
tags:
    - attack.execution
    - attack.t1059.006
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith:
            - '\cmd.exe'
            - '\explorer.exe'
            - '\powershell.exe'
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains|all:
            - 'findstr'
            - '.vbs'
            - '.lnk'
    condition: selection
falsepositives:
    - Unlikely
level: high

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