1200KM / sigma-rule

Suspicious Network Communication With IPFS — Sigma Rule

Sigma rule eb6c2004-1cef-427f-8885-9042974e5eb6. Suspicious Network Communication With IPFS — Sigma Rule. Detects connections to interplanetary file system (IPFS) containing a user's email address which mirrors behaviours observed in recent phishing campaigns leveraging IPFS to host credential harvesting webpages.

Rule metadata and linked tags

Author: Gavin Knapp. Source status: test; severity: low. Source dates: 2023-03-16 / not supplied.

{
  "category": "proxy"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: bcccd19eaf3af48b350e91a3083002fc85243457215cf8bf8d6f463ac39dbae2

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Suspicious Network Communication With IPFS
id: eb6c2004-1cef-427f-8885-9042974e5eb6
status: test
description: Detects connections to interplanetary file system (IPFS) containing a user's email address which mirrors behaviours observed in recent phishing campaigns leveraging IPFS to host credential harvesting webpages.
references:
    - https://blog.talosintelligence.com/ipfs-abuse/
    - https://github.com/Cisco-Talos/IOCs/tree/80caca039988252fbb3f27a2e89c2f2917f582e0/2022/11
    - https://isc.sans.edu/diary/IPFS%20phishing%20and%20the%20need%20for%20correctly%20set%20HTTP%20security%20headers/29638
author: Gavin Knapp
date: 2023-03-16
tags:
    - attack.collection
    - attack.credential-access
    - attack.t1056
logsource:
    category: proxy
detection:
    selection:
        cs-uri|re: '(?i)(ipfs\.io/|ipfs\.io\s).+\..+@.+\.[a-z]+'
    condition: selection
falsepositives:
    - Legitimate use of IPFS being used in the organisation. However the cs-uri regex looking for a user email will likely negate this.
level: low

Original YAML and metadata in JSON

False positives

Legitimate use of IPFS being used in the organisation. However the cs-uri regex looking for a user email will likely negate this.

Source references

Connected ecosystem references

Exact source-tagged techniques

T1056 · Input Capture · Detection rules & anomalies

Telemetry review

Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.

Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.