1200KM / sigma-rule
Boot Configuration Tampering Via Bcdedit.EXE — Sigma Rule
Sigma rule 1444443e-6757-43e4-9ea4-c8fc705f79a2. Boot Configuration Tampering Via Bcdedit.EXE — Sigma Rule. Detects the use of the bcdedit command to tamper with the boot configuration data. This technique is often times used by malware or attackers as a destructive way before launching ransomware.
Rule metadata and linked tags
Author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community. Source status: stable; severity: high. Source dates: 2019-10-24 / 2023-02-15.
{
"category": "process_creation",
"product": "windows"
}Pinned original Sigma rule · Detection Rule License 1.1
Source SHA-256: 427a4c4f4e21d1b06f0cd89e15139f38096bf903c9f471fcbd5e460314fb095e
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: Boot Configuration Tampering Via Bcdedit.EXE
id: 1444443e-6757-43e4-9ea4-c8fc705f79a2
status: stable
description: Detects the use of the bcdedit command to tamper with the boot configuration data. This technique is often times used by malware or attackers as a destructive way before launching ransomware.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md
- https://eqllib.readthedocs.io/en/latest/analytics/c4732632-9c1d-4980-9fa8-1d98c93f918e.html
author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
date: 2019-10-24
modified: 2023-02-15
tags:
- attack.impact
- attack.t1490
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith: '\bcdedit.exe'
- OriginalFileName: 'bcdedit.exe'
selection_set:
CommandLine|contains: 'set'
selection_cli:
- CommandLine|contains|all:
- 'bootstatuspolicy'
- 'ignoreallfailures'
- CommandLine|contains|all:
- 'recoveryenabled'
- 'no'
condition: all of selection_*
falsepositives:
- Unlikely
level: high
simulation:
- type: atomic-red-team
name: Windows - Disable Windows Recovery Console Repair
technique: T1490
atomic_guid: cf21060a-80b3-4238-a595-22525de4ab81
False positives
- Unlikely
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.