Phishing Pattern ISO in Archive
Detects cases in which an ISO files is opend within an archiver like 7Zip or Winrar, which is a sign of phishing as threat actors put small ISO files in archives as email attachments to bypass certain filters and protective measures (mark of web)
Detection logic
selection
ParentImage|endswith:
- \Winrar.exe
- \7zFM.exe
- \peazip.exe
Image|endswith:
- \isoburn.exe
- \PowerISO.exe
- \ImgBurn.exeCondition
selectionRaw YAML
title: Phishing Pattern ISO in Archive
id: fcdf69e5-a3d3-452a-9724-26f2308bf2b1
status: test
description: Detects cases in which an ISO files is opend within an archiver like 7Zip or Winrar, which is a sign of phishing as threat actors put small ISO files in archives as email attachments to bypass certain filters and protective measures (mark of web)
references:
- https://twitter.com/1ZRR4H/status/1534259727059787783
- https://app.any.run/tasks/e1fe6a62-bce8-4323-a49a-63795d9afd5d/
author: Florian Roth (Nextron Systems)
date: 2022-06-07
tags:
- attack.initial-access
- attack.t1566
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith:
- '\Winrar.exe'
- '\7zFM.exe'
- '\peazip.exe'
Image|endswith:
- '\isoburn.exe'
- '\PowerISO.exe'
- '\ImgBurn.exe'
condition: selection
falsepositives:
- Legitimate cases in which archives contain ISO or IMG files and the user opens the archive and the image via clicking and not extraction
level: highFalse positives
- Legitimate cases in which archives contain ISO or IMG files and the user opens the archive and the image via clicking and not extraction