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Detection rules › Sigma

Sysmon Blocked Executable

Status
test
Severity
high
Log source
product windows, service sysmon
Author
Nasreddine Bencherchali (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Triggers on any Sysmon "FileBlockExecutable" event, which indicates a violation of the configured block policy

Known false positives

  • Unlikely

MITRE ATT&CK coverage

TacticTechniques
Defense ImpairmentNo specific technique

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 27: FileBlockExecutable

Rule body

title: Sysmon Blocked Executable
id: 23b71bc5-953e-4971-be4c-c896cda73fc2
status: test
description: Triggers on any Sysmon "FileBlockExecutable" event, which indicates a violation of the configured block policy
references:
    - https://medium.com/@olafhartong/sysmon-14-0-fileblockexecutable-13d7ba3dff3e
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-16
modified: 2023-09-16
tags:
    - attack.defense-impairment
logsource:
    product: windows
    service: sysmon
detection:
    selection:
        EventID: 27  # this is fine, we want to match any FileBlockExecutable event
    condition: selection
falsepositives:
    - Unlikely
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    EventID: 27