Access To Crypto Currency Wallets By Uncommon Applications — Sigma Rule

Rule metadata and linked tags

Author: X__Junior (Nextron Systems). Source status: test; severity: medium. Source dates: 2024-07-29 / not supplied.

{
  "category": "file_access",
  "product": "windows",
  "definition": "Requirements: Microsoft-Windows-Kernel-File ETW provider"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 5de7cd7e6688228a10422ed797fbb88a96fccde4d64ee3fa18da3fafcd4eac18

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Access To Crypto Currency Wallets By Uncommon Applications
id: f41b0311-44f9-44f0-816d-dd45e39d4bc8
status: test
description: |
    Detects file access requests to crypto currency files by uncommon processes.
    Could indicate potential attempt of crypto currency wallet stealing.
references:
    - Internal Research
author: X__Junior (Nextron Systems)
date: 2024-07-29
tags:
    - attack.t1003
    - attack.credential-access
logsource:
    category: file_access
    product: windows
    definition: 'Requirements: Microsoft-Windows-Kernel-File ETW provider'
detection:
    selection:
        - FileName|contains:
              - '\AppData\Roaming\Ethereum\keystore\'
              - '\AppData\Roaming\EthereumClassic\keystore\'
              - '\AppData\Roaming\monero\wallets\'
        - FileName|endswith:
              - '\AppData\Roaming\Bitcoin\wallet.dat'
              - '\AppData\Roaming\BitcoinABC\wallet.dat'
              - '\AppData\Roaming\BitcoinSV\wallet.dat'
              - '\AppData\Roaming\DashCore\wallet.dat'
              - '\AppData\Roaming\DogeCoin\wallet.dat'
              - '\AppData\Roaming\Litecoin\wallet.dat'
              - '\AppData\Roaming\Ripple\wallet.dat'
              - '\AppData\Roaming\Zcash\wallet.dat'
    filter_main_system:
        Image: System
    filter_main_generic:
        # This filter is added to avoid large amount of FP with 3rd party software. You should remove this in favour of specific filter per-application
        Image|startswith:
            - 'C:\Program Files (x86)\'
            - 'C:\Program Files\'
            - 'C:\Windows\system32\'
            - 'C:\Windows\SysWOW64\'
    filter_optional_defender:
        Image|startswith: 'C:\ProgramData\Microsoft\Windows Defender\'
        Image|endswith:
            - '\MpCopyAccelerator.exe'
            - '\MsMpEng.exe'
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - Antivirus, Anti-Spyware, Anti-Malware Software
    - Backup software
    - Legitimate software installed on partitions other than "C:\"
    - Searching software such as "everything.exe"
level: medium

Original YAML and metadata in JSON

False positives

• Antivirus, Anti-Spyware, Anti-Malware Software
• Backup software
• Legitimate software installed on partitions other than "C:\"
• Searching software such as "everything.exe"

Source references

• Internal Research (source note; no public URL supplied)