Detection rules › Sigma
PUA - Potential PE Metadata Tamper Using Rcedit
Detects the use of rcedit to potentially alter executable PE metadata properties, which could conceal efforts to rename system utilities for defense evasion.
Known false positives
- Legitimate use of the tool by administrators or users to update metadata of a binary
MITRE ATT&CK coverage
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: PUA - Potential PE Metadata Tamper Using Rcedit
id: 0c92f2e6-f08f-4b73-9216-ecb0ca634689
status: test
description: Detects the use of rcedit to potentially alter executable PE metadata properties, which could conceal efforts to rename system utilities for defense evasion.
references:
- https://security.stackexchange.com/questions/210843/is-it-possible-to-change-original-filename-of-an-exe
- https://www.virustotal.com/gui/file/02e8e8c5d430d8b768980f517b62d7792d690982b9ba0f7e04163cbc1a6e7915
- https://github.com/electron/rcedit
author: Micah Babinski
date: 2022-12-11
modified: 2023-03-05
tags:
- attack.stealth
- attack.t1036.003
- attack.t1036
- attack.t1027.005
- attack.t1027
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith:
- '\rcedit-x64.exe'
- '\rcedit-x86.exe'
- Description: 'Edit resources of exe'
- Product: 'rcedit'
selection_flags:
CommandLine|contains: '--set-' # Covers multiple edit commands such as "--set-resource-string" or "--set-version-string"
selection_attributes:
CommandLine|contains:
- 'OriginalFileName'
- 'CompanyName'
- 'FileDescription'
- 'ProductName'
- 'ProductVersion'
- 'LegalCopyright'
condition: all of selection_*
falsepositives:
- Legitimate use of the tool by administrators or users to update metadata of a binary
level: medium
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
- Image|endswith:
- '\rcedit-x64.exe'
- '\rcedit-x86.exe'
- Description: 'Edit resources of exe'
- Product: 'rcedit'
Stage 2: selection_flags
selection_flags:
CommandLine|contains: '--set-'
Stage 3: selection_attributes
selection_attributes:
CommandLine|contains:
- 'OriginalFileName'
- 'CompanyName'
- 'FileDescription'
- 'ProductName'
- 'ProductVersion'
- 'LegalCopyright'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |
Description | eq |
| field:"Description" kind:eq value:"Edit resources of exe" |
Image | ends_with |
| field:"Image" kind:ends_with |
Product | eq |
| field:"Product" kind:eq value:"rcedit" |