DNS Queries to Katz Stealer–Associated Domains (Network)

Alerts on DNS queries for domains associated with Katz Stealer.

FreeReviewedSigma · High · v5

Category: dns
Author: Swachchhanda Shrawan Poudel (Nextron Systems) (SigmaHQ), DRL 1.1
Published: 2025-05-22
Updated: 2026-07-31

ATT&CK techniques

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1071.004DNS
Exfiltration
Impact

What it detects

This rule flags DNS query events where the queried domain contains Katz Stealer–associated domain strings: 'katz-panel.com', 'katz-stealer.com', 'katzstealer.com', or 'twist2katz.com'. Attackers using malware command-and-control or data exfiltration workflows may generate these DNS lookups to reach their infrastructure. Detection relies on DNS telemetry that includes the queried domain or name per request.

Reporting behind it

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DNS Queries to Katz Stealer–Associated Domains (Network)

Pivot detection · T1071.004 · 9 related

Changelog

v5
Candidate ingested via manual entry.2026-07-31
v4
Candidate ingested via manual entry.2026-07-31
v3
Candidate ingested via manual entry.2026-07-31
v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

dns-queries-to-katz-stealer-associated-domains-6b0c762f

title: DNS Queries to Katz Stealer–Associated Domains (Network)
id: 06784aa8-bb45-445a-8dcd-70a06d990fdf
related:
  - id: 9c3d6e32-f4c8-4d73-8b8f-95c3b383a13c
    type: similar
  - id: 6b0c762f-0e1b-435f-a829-5943b08fe36a
    type: derived
status: experimental
description: "This rule flags DNS query events where the queried domain contains Katz Stealer–associated domain strings: 'katz-panel.com', 'katz-stealer.com', 'katzstealer.com', or 'twist2katz.com'. Attackers using malware command-and-control or data exfiltration workflows may generate these DNS lookups to reach their infrastructure. Detection relies on DNS telemetry that includes the queried domain or name per request."
references:
  - Internal research
  - https://github.com/SigmaHQ/sigma/blob/master/rules-emerging-threats/2025/Malware/Katz-Stealer/net_dns_katz_stealer_domain.yml
author: Swachchhanda Shrawan Poudel (Nextron Systems), Huntrule Team
date: 2025-05-22
tags:
  - attack.command-and-control
  - attack.t1071.004
  - detection.emerging-threats
logsource:
  category: dns
detection:
  selection:
    query|contains:
      - katz-panel.com
      - katz-stealer.com
      - katzstealer.com
      - twist2katz.com
  condition: selection
falsepositives:
  - Unlikely
level: high
license: DRL-1.1

Convert

This rule as a query you can run. Uses no unlock credit.

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