Sigma rule: Silence.Downloader V3

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-f36c1901f1b1, updated 2023-02-24T00:00:00.000Z.

Rule

Title
Silence.Downloader V3
Status
unsupported
Level
high
Author
Alina Stepchenkova, Roman Rezvukhin, Group-IB, oscd.community
Date
2019/11/01
Modified
2023/02/24
File
unsupported/windows/proc_creation_win_correlation_apt_silence_downloader_v3.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects Silence downloader. These commands are hardcoded into the binary.

Log source

product
windows
category
process_creation

Detection

selection_recon:
    Image|endswith:
        - '\tasklist.exe'
        - '\qwinsta.exe'
        - '\ipconfig.exe'
        - '\hostname.exe'
    CommandLine|contains: '>>'
    CommandLine|endswith: 'temps.dat'
selection_persistence:
    CommandLine|contains: '/C REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "WinNetworkSecurity" /t REG_SZ /d'
condition: selection_recon | near selection_persistence # requires both

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence
  • attack.t1547.001
  • attack.discovery
  • attack.t1057
  • attack.t1082
  • attack.t1016
  • attack.t1033
  • attack.g0091

MITRE ATT&CK ids this rule names

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/unsupported/windows/proc_creation_win_correlation_apt_silence_downloader_v3.yml

Sources and licences

  • SigmaHQ

    "Silence.Downloader V3" by Alina Stepchenkova, Roman Rezvukhin, Group-IB, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/unsupported/windows/proc_creation_win_correlation_apt_silence_downloader_v3.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: Silence.Downloader V3",
entity page, dataset version ref-f36c1901f1b1, updated 2023-02-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/170901d1-de11-4de7-bccb-8fa13678d857 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 170901d1-de11-4de7-bccb-8fa13678d857, 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.