HackTool - TruffleSnout Execution

Status: test
Severity: high
Log source: category process_creation, product windows
Author: frack113
Source: github.com/SigmaHQ/sigma

Detects the use of TruffleSnout.exe an iterative AD discovery toolkit for offensive operators, situational awareness and targeted low noise enumeration.

MITRE ATT&CK coverage

Tactic	Techniques
Discovery	`T1482` Domain Trust Discovery

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation

Rule body

title: HackTool - TruffleSnout Execution
id: 69ca006d-b9a9-47f5-80ff-ecd4d25d481a
status: test
description: Detects the use of TruffleSnout.exe an iterative AD discovery toolkit for offensive operators, situational awareness and targeted low noise enumeration.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1482/T1482.md
    - https://github.com/dsnezhkov/TruffleSnout
    - https://github.com/dsnezhkov/TruffleSnout/blob/7c2f22e246ef704bc96c396f66fa854e9ca742b9/TruffleSnout/Docs/USAGE.md
author: frack113
date: 2022-08-20
modified: 2023-02-13
tags:
    - attack.discovery
    - attack.t1482
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - OriginalFileName: 'TruffleSnout.exe'
        - Image|endswith: '\TruffleSnout.exe'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: `condition`

selection

Stage 1: `selection`

selection:
    - OriginalFileName: 'TruffleSnout.exe'
    - Image|endswith: '\TruffleSnout.exe'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`Image`	ends_with	`\TruffleSnout.exe`	`field:"Image" kind:ends_with value:"\TruffleSnout.exe"`
`OriginalFileName`	eq	`TruffleSnout.exe`	`field:"OriginalFileName" kind:eq value:"TruffleSnout.exe"`