PowerShell Script with Webcam Video Capture Capabilities

 1[metadata]
 2creation_date = "2023/07/18"
 3integration = ["windows"]
 4maturity = "production"
 5min_stack_comments = "New fields added: required_fields, related_integrations, setup"
 6min_stack_version = "8.3.0"
 7updated_date = "2024/03/08"
 8
 9[rule]
10author = ["Elastic"]
11description = """
12Detects PowerShell scripts that can be used to record webcam video. Attackers can capture this information to extort or
13spy on victims.
14"""
15from = "now-9m"
16index = ["winlogbeat-*", "logs-windows.powershell*"]
17language = "kuery"
18license = "Elastic License v2"
19name = "PowerShell Script with Webcam Video Capture Capabilities"
20references = ["https://github.com/EmpireProject/Empire/blob/master/lib/modules/powershell/collection/WebcamRecorder.py"]
21risk_score = 47
22rule_id = "eb44611f-62a8-4036-a5ef-587098be6c43"
23setup = """## Setup
24
25The 'PowerShell Script Block Logging' logging policy must be enabled.
26Steps to implement the logging policy with Advanced Audit Configuration:

1
2Steps to implement the logging policy via registry:

 1"""
 2severity = "medium"
 3tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Collection", "Data Source: PowerShell Logs"]
 4timestamp_override = "event.ingested"
 5type = "query"
 6
 7query = '''
 8event.category:process and host.os.type:windows and
 9  powershell.file.script_block_text : (
10    "NewFrameEventHandler" or
11    "VideoCaptureDevice" or
12    "DirectX.Capture.Filters" or
13    "VideoCompressors" or
14    "Start-WebcamRecorder" or
15    (
16      ("capCreateCaptureWindowA" or
17       "capCreateCaptureWindow" or
18       "capGetDriverDescription") and
19      ("avicap32.dll" or "avicap32")
20    )
21  )
22'''
23
24
25[[rule.threat]]
26framework = "MITRE ATT&CK"
27[[rule.threat.technique]]
28id = "T1125"
29name = "Video Capture"
30reference = "https://attack.mitre.org/techniques/T1125/"
31
32
33[rule.threat.tactic]
34id = "TA0009"
35name = "Collection"
36reference = "https://attack.mitre.org/tactics/TA0009/"
37[[rule.threat]]
38framework = "MITRE ATT&CK"
39[[rule.threat.technique]]
40id = "T1059"
41name = "Command and Scripting Interpreter"
42reference = "https://attack.mitre.org/techniques/T1059/"
43[[rule.threat.technique.subtechnique]]
44id = "T1059.001"
45name = "PowerShell"
46reference = "https://attack.mitre.org/techniques/T1059/001/"
47
48
49
50[rule.threat.tactic]
51id = "TA0002"
52name = "Execution"
53reference = "https://attack.mitre.org/tactics/TA0002/"