Detection rules › Sigma
Space After Filename - macOS
Detects attempts to masquerade as legitimate files by adding a space to the end of the filename.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Stealth | T1036.006 Masquerading: Space after Filename |
Event coverage
| Provider | Event | Title |
|---|---|---|
| ESF | exec | Process Execution (Notify) |
Rule body yaml
title: Space After Filename - macOS
id: b6e2a2e3-2d30-43b1-a4ea-071e36595690
status: test
description: Detects attempts to masquerade as legitimate files by adding a space to the end of the filename.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1036.006/T1036.006.md
author: remotephone
date: 2021-11-20
modified: 2023-01-04
tags:
- attack.stealth
- attack.t1036.006
logsource:
product: macos
category: process_creation
detection:
selection1:
CommandLine|endswith: ' '
selection2:
Image|endswith: ' '
condition: 1 of selection*
falsepositives:
- Mistyped commands or legitimate binaries named to match the pattern
level: low
Stages and Predicates
Stage 0: condition
1 of selection*Stage 1: selection1
selection1:
CommandLine|endswith: ' '
Stage 2: selection2
selection2:
Image|endswith: ' '
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 | ends_with | |
Image | ends_with |