detection.wiki

Detection rules › Sigma

Python Reverse Shell Execution Via PTY And Socket Modules

Status
test
Severity
high
Log source
category process_creation, product linux
Author
@d4ns4n_, Nasreddine Bencherchali (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects the execution of python with calls to the socket and pty module in order to connect and spawn a potential reverse shell.

MITRE ATT&CK coverage

TacticTechniques
ExecutionNo specific technique

Telemetry coverage

PlatformRecord / event type
LinuxEvent ID 1: Process Create

Rule body

title: Python Reverse Shell Execution Via PTY And Socket Modules
id: 32e62bc7-3de0-4bb1-90af-532978fe42c0
related:
    - id: c4042d54-110d-45dd-a0e1-05c47822c937
      type: similar
status: test
description: |
    Detects the execution of python with calls to the socket and pty module in order to connect and spawn a potential reverse shell.
references:
    - https://www.revshells.com/
author: '@d4ns4n_, Nasreddine Bencherchali (Nextron Systems)'
date: 2023-04-24
modified: 2024-11-04
tags:
    - attack.execution
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        Image|contains: 'python'
        CommandLine|contains|all:
            - ' -c '
            - 'import'
            - 'pty'
            - 'socket'
            - 'spawn'
            - '.connect'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    Image|contains: 'python'
    CommandLine|contains|all:
        - ' -c '
        - 'import'
        - 'pty'
        - 'socket'
        - 'spawn'
        - '.connect'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
CommandLinematch
  • -c
  • .connect
  • import
  • pty
  • socket
  • spawn
field:"CommandLine" kind:match
Imagematch
  • python
field:"Image" kind:match value:"python"