Potential Persistence Via Logon Scripts - Registry

calendar Oct 23, 2025 · attack.privilege-escalation attack.t1037.001 attack.persistence attack.lateral-movement  ·
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Detects creation of "UserInitMprLogonScript" registry value which can be used as a persistence method by malicious actors

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 1title: Potential Persistence Via Logon Scripts - Registry
 2id: 9ace0707-b560-49b8-b6ca-5148b42f39fb
 3status: test
 4description: Detects creation of "UserInitMprLogonScript" registry value which can be used as a persistence method by malicious actors
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1037.001/T1037.001.md
 7author: Tom Ueltschi (@c_APT_ure)
 8date: 2019-01-12
 9modified: 2023-06-09
10tags:
11    - attack.privilege-escalation
12    - attack.t1037.001
13    - attack.persistence
14    - attack.lateral-movement
15logsource:
16    category: registry_add
17    product: windows
18detection:
19    selection:
20        EventType: CreateKey
21        TargetObject|contains: 'UserInitMprLogonScript'
22    condition: selection
23falsepositives:
24    - Investigate the contents of the "UserInitMprLogonScript" value to determine of the added script is legitimate
25level: medium

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