Detection rules › Sigma
Suspicious History File Operations
Detects commandline operations on shell history files
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Credential Access | T1552.003 Unsecured Credentials: Shell History |
Event coverage
| Provider | Event | Title |
|---|---|---|
| ESF | exec | Process Execution (Notify) |
Rule body yaml
title: Suspicious History File Operations
id: 508a9374-ad52-4789-b568-fc358def2c65
status: test
description: Detects commandline operations on shell history files
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.003/T1552.003.md
author: 'Mikhail Larin, oscd.community'
date: 2020-10-17
modified: 2021-11-27
tags:
- attack.credential-access
- attack.t1552.003
logsource:
product: macos
category: process_creation
detection:
selection:
CommandLine|contains:
- '.bash_history'
- '.zsh_history'
- '.zhistory'
- '.history'
- '.sh_history'
- 'fish_history'
condition: selection
falsepositives:
- Legitimate administrative activity
- Legitimate software, cleaning hist file
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
CommandLine|contains:
- '.bash_history'
- '.zsh_history'
- '.zhistory'
- '.history'
- '.sh_history'
- 'fish_history'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|