Final1stspy

MITRE ATT&CK: S0355 View on attack.mitre.org

Aliases: Final1stspy

First seen
2021-05-15 00:00:00
Malware type
dropper
Family
Malware family
Operating systems
windows
Profile updated
2026-07-07 15:01:22

Targeted industries: government-and-public-sector energy-and-utilities financial-services

Targeted regions: country_code:kr country_code:jp

Context

Final1stspy is a dropper family that has been used to deliver DOGCALL.

Detection coverage

  • 1 YARA rules
  • 200 Sigma rules

Malware & tools used

  • Registry Run Keys / Startup Folder (attack-pattern)
  • Deobfuscate/Decode Files or Information (attack-pattern)
  • Obfuscated Files or Information (attack-pattern)
  • Process Discovery (attack-pattern)
  • System Information Discovery (attack-pattern)
  • Web Protocols (attack-pattern)

Used by threat actors

Detection rules

  • MALPEDIA_Win_Final1Stspy_Auto (yara-rule)

Reports & references

  • malpedia.caad.fkie.fraunhofer.de — Win.Final1Stspy (report)
  • intezer.com — Apt37 Final1Stspy Reaping The Freemilk (report)
  • researchcenter.paloaltonetworks.com — Unit42 Nokki Almost Ties The Knot With Dogcall Reaper Group Uses New Malware To Deploy Rat (report)
  • MITRE ATT&CK — S0355 (report)

External references