Sigma rule: High TXT Records Requests Rate

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-085ec2eb6531, updated 2023-03-24T00:00:00.000Z.

Rule

Title
High TXT Records Requests Rate
Status
unsupported
Level
medium
Author
Daniil Yugoslavskiy, oscd.community
Date
2019/10/24
Modified
2023/03/24
File
unsupported/network/net_dns_high_txt_records_requests_rate.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Extremely high rate of TXT record type DNS requests from host per short period of time. Possible result of Do-exfiltration tool execution

Log source

category
dns

Detection

selection:
    record_type: 'TXT'
timeframe: 1m
condition: selection | count() by src_ip > 50

False positives (as the rule lists them)

  • Legitimate high DNS TXT requests rate to domain name which should be added to whitelist

Tags

  • attack.exfiltration
  • attack.t1048.003
  • attack.command_and_control
  • attack.t1071.004

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/network/net_dns_high_txt_records_requests_rate.yml

Sources and licences

  • SigmaHQ

    "High TXT Records Requests Rate" by Daniil Yugoslavskiy, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/unsupported/network/net_dns_high_txt_records_requests_rate.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: High TXT Records Requests Rate",
entity page, dataset version ref-085ec2eb6531, updated 2023-03-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/f0a8cedc-1d22-4453-9c44-8d9f4ebd5d35 (accessed 2026-11-03).
Underlying source: SigmaHQ rule f0a8cedc-1d22-4453-9c44-8d9f4ebd5d35, 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.