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Detection rules › Sigma

HackTool - BabyShark Agent Default URL Pattern

Status
test
Severity
critical
Log source
category proxy
Author
Florian Roth (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects Baby Shark C2 Framework default communication patterns

Known false positives

  • Unlikely

MITRE ATT&CK coverage

TacticTechniques
Command & Control

Rule body

title: HackTool - BabyShark Agent Default URL Pattern
id: 304810ed-8853-437f-9e36-c4975c3dfd7e
status: test
description: Detects Baby Shark C2 Framework default communication patterns
references:
    - https://nasbench.medium.com/understanding-detecting-c2-frameworks-babyshark-641be4595845
author: Florian Roth (Nextron Systems)
date: 2021-06-09
modified: 2024-02-15
tags:
    - attack.command-and-control
    - attack.t1071.001
logsource:
    category: proxy
detection:
    selection:
        c-uri|contains: 'momyshark\?key='
    condition: selection
falsepositives:
    - Unlikely
level: critical

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    c-uri|contains: 'momyshark\?key='

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
c-urimatch
  • momyshark\?key=
field:"c-uri" kind:match value:"momyshark\?key="