Sigma rule: Phishing Pattern ISO in Archive

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9abab097ed1d, updated 2022-06-07T00:00:00.000Z.

Rule

Title
Phishing Pattern ISO in Archive
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2022-06-07
File
rules/windows/process_creation/proc_creation_win_susp_archiver_iso_phishing.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

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)

Log source

product
windows
category
process_creation

Detection

selection:
    ParentImage|endswith:
        - '\Winrar.exe'
        - '\7zFM.exe'
        - '\peazip.exe'
    Image|endswith:
        - '\isoburn.exe'
        - '\PowerISO.exe'
        - '\ImgBurn.exe'
condition: selection

False positives (as the rule lists them)

  • Legitimate cases in which archives contain ISO or IMG files and the user opens the archive and the image via clicking and not extraction

Tags

  • attack.initial-access
  • attack.t1566

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_susp_archiver_iso_phishing.yml

Sources and licences

  • SigmaHQ

    "Phishing Pattern ISO in Archive" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_susp_archiver_iso_phishing.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Phishing Pattern ISO in Archive",
entity page, dataset version ref-9abab097ed1d, updated 2022-06-07T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/fcdf69e5-a3d3-452a-9724-26f2308bf2b1 (accessed 2026-11-03).
Underlying source: SigmaHQ rule fcdf69e5-a3d3-452a-9724-26f2308bf2b1, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.