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Execution of known malicious file dafad19900fff383…

SIGmediumconfidence 77/100generated 2026-10-18

Process image hash tracked by skopnix as Heodo.

ATT&CK
T1204.002 mitre ↗
Linked actors
CeranaKeeper
False positives
Scoped to one indicator with skopnix confidence 77/100 from 2 independent sources; checked against RFC1918/reserved space, CDN / cloud / scanner ranges and top-site lists (MISP warninglists), GreyNoise when enriched, and skopnix's benign-infrastructure list. Re-validate against last_seen before blocking: infrastructure is re-assigned.

Sigma rule

skopnix-sigma-ioc-sha256-dafad19900fff383c2790e017c958a1e92e84f7bb15-35391dcf.ymldownload .yml ↓
title: Skopnix - Execution of known malicious file dafad19900fff383…
id: 650feee9-678a-53d4-8dde-19766e072b38
status: experimental
description: Process image hash tracked by skopnix as Heodo.
references:
  - https://skopnix.com/ioc/dafad19900fff383c2790e017c958a1e92e84f7bb159a2a7136923b715a4c94f
author: skopnix
date: '2026-10-18'
tags:
  - attack.execution
  - attack.t1204.002
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    Hashes|contains: SHA256=DAFAD19900FFF383C2790E017C958A1E92E84F7BB159A2A7136923B715A4C94F
  condition: selection
falsepositives:
  - Legitimate services sharing the address; verify against skopnix confidence + last_seen
level: medium

How to deploy on Sigma

  1. 1.Convert for your SIEM with sigma-cli / pySigma, e.g. sigma convert -t splunk -p sysmon rule.yml.
  2. 2.Run it as a hunt first: every rule ships as status experimental.
  3. 3.Promote to an alert once a week of results is clean on your data.

Check · The processing pipeline must map the logsource (firewall, dns, proxy, webserver, process_creation) to your field names.

References