DNS Query for Anonfiles.com Domain - DNS Client

Description

Detects DNS queries for anonfiles.com, which is an anonymous file upload platform often used for malicious purposes

Query · sigma

selection:
  EventID: 3008
  QueryName|contains: .anonfiles.com
condition: selection

Known false positives

  • Rare legitimate access to anonfiles.com
Raw source DNS Query for Anonfiles.com Domain - DNS Client · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: DNS Query for Anonfiles.com Domain - DNS Client
id: 29f171d7-aa47-42c7-9c7b-3c87938164d9
related:
    - id: 065cceea-77ec-4030-9052-fc0affea7110
      type: similar
status: test
description: Detects DNS queries for anonfiles.com, which is an anonymous file upload platform often used for malicious purposes
references:
    - https://www.trendmicro.com/vinfo/us/security/news/ransomware-spotlight/ransomware-spotlight-blackbyte
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-01-16
tags:
    - attack.exfiltration
    - attack.t1567.002
logsource:
    product: windows
    service: dns-client
    definition: 'Requirements: Microsoft-Windows-DNS Client Events/Operational Event Log must be enabled/collected in order to receive the events.'
detection:
    selection:
        EventID: 3008
        QueryName|contains: '.anonfiles.com'
    condition: selection
falsepositives:
    - Rare legitimate access to anonfiles.com
level: high

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