eric-forte-elastic
46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
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# or more contributor license agreements. Licensed under the Elastic License
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# 2.0; you may not use this file except in compliance with the Elastic License
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# 2.0.
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# Name: Boot Config Deletion With bcdedit
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# RTA: delete_bootconf.py
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# ATT&CK: T1107
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# signal.rule.name: Modification of Boot Configuration
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# Description: Uses bcdedit.exe to backup the current boot configuration, and then to delete the current boot
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# configuration, finally restoring the original.
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from pathlib import Path
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from . import RtaMetadata, common
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metadata = RtaMetadata(
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uuid="eaf71384-2e38-4970-b170-9645ccde1d2b",
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platforms=["windows"],
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endpoint=[],
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siem=[{"rule_id": "69c251fb-a5d6-4035-b5ec-40438bd829ff", "rule_name": "Modification of Boot Configuration"}],
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techniques=["T1490"],
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)
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@common.requires_os(*metadata.platforms)
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def main():
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# Messing with the boot configuration is probably not a great idea so create a backup:
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common.log("Exporting the boot configuration....")
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bcdedit = "bcdedit.exe"
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backup_file = Path("boot.cfg").resolve()
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common.execute(["bcdedit.exe", "/export", backup_file])
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# WARNING: this is a destructive command which might be super bad to run
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common.log("Changing boot configuration", log_type="!")
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common.execute([bcdedit, "/set", "{current}", "bootstatuspolicy", "ignoreallfailures"])
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common.execute([bcdedit, "/set", "{current}", "recoveryenabled", "no"])
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# Restore the boot configuration
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common.log("Restoring boot configuration from %s" % backup_file, log_type="-")
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common.execute([bcdedit, "/import", backup_file])
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if __name__ == "__main__":
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exit(main())
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