Sigma rule: Octopus Scanner Malware

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-143cc125b4da, updated 2021-11-27T00:00:00.000Z.

Rule

Title
Octopus Scanner Malware
Status
test
Level
high
Author
NVISO
Date
2020-06-09
Modified
2021-11-27
File
rules/windows/file/file_event/file_event_win_mal_octopus_scanner.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects Octopus Scanner Malware.

Log source

product
windows
category
file_event

Detection

selection:
    TargetFilename|endswith:
        - '\AppData\Local\Microsoft\Cache134.dat'
        - '\AppData\Local\Microsoft\ExplorerSync.db'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.initial-access
  • attack.t1195
  • attack.t1195.001

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/file/file_event/file_event_win_mal_octopus_scanner.yml

Sources and licences

  • SigmaHQ

    "Octopus Scanner Malware" by NVISO (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_mal_octopus_scanner.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: Octopus Scanner Malware",
entity page, dataset version ref-143cc125b4da, updated 2021-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/805c55d9-31e6-4846-9878-c34c75054fe9 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 805c55d9-31e6-4846-9878-c34c75054fe9, 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.