1200kmSECURITY RESEARCH

1200KM / sigma-rule

BitLockerTogo.EXE Execution — Sigma Rule

Sigma rule 7f2376f9-42ee-4dfc-9360-fecff9a88fc8. BitLockerTogo.EXE Execution — Sigma Rule. Detects the execution of "BitLockerToGo.EXE". BitLocker To Go is BitLocker Drive Encryption on removable data drives. This feature includes the encryption of, USB flash drives, SD cards, External hard disk drives, Other drives that are formatted by using the NTFS, FAT16, FAT32, or exFAT file system. This is a rarely used application and usage of it at all is worth investigating. Malware such as Lumma stealer has been seen using this process as a target for process hollowing.

Rule metadata and linked tags

testlowprocess_creationwindowsattack.stealthattack.t1218

Author: Josh Nickels, mttaggart. Source status: test; severity: low. Source dates: 2024-07-11 / not supplied.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: b00c8fcc1460bedc25d8d54f578eaf3fe4aa365495fae65759eb977ec172d592

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: BitLockerTogo.EXE Execution
id: 7f2376f9-42ee-4dfc-9360-fecff9a88fc8
status: test
description: |
    Detects the execution of "BitLockerToGo.EXE".
    BitLocker To Go is BitLocker Drive Encryption on removable data drives. This feature includes the encryption of, USB flash drives, SD cards, External hard disk drives, Other drives that are formatted by using the NTFS, FAT16, FAT32, or exFAT file system.
    This is a rarely used application and usage of it at all is worth investigating.
    Malware such as Lumma stealer has been seen using this process as a target for process hollowing.
references:
    - https://tria.ge/240521-ynezpagf56/behavioral1
    - https://any.run/report/6eea2773c1b4b5c6fb7c142933e220c96f9a4ec89055bf0cf54accdcde7df535/a407f006-ee45-420d-b576-f259094df091
    - https://bazaar.abuse.ch/sample/8c75f8e94486f5bbf461505823f5779f328c5b37f1387c18791e0c21f3fdd576/
    - https://bazaar.abuse.ch/sample/64e6605496919cd76554915cbed88e56fdec10dec6523918a631754664b8c8d3/
author: Josh Nickels, mttaggart
date: 2024-07-11
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\BitLockerToGo.exe'
    condition: selection
falsepositives:
    - Legitimate usage of BitLockerToGo.exe to encrypt portable devices.
level: low

Original YAML and metadata in JSON

False positives

  • Legitimate usage of BitLockerToGo.exe to encrypt portable devices.

Source references

Connected ecosystem references

Exact source-tagged techniques

Telemetry review

Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.

Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.