PUA - Potential PE Metadata Tamper Using Rcedit

01

description

What this is, in brief.

Detects the use of rcedit to potentially alter executable PE metadata properties, which could conceal efforts to rename system utilities for defense evasion.

02

rule source (YAML)

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

04

detects techniques (4)

ATT&CK techniques this enables or maps to.

05

references

External citations — patches, advisories, analysis.