Remote Schedule Task Recon via ITaskSchedulerService

calendar Jun 4, 2025 · attack.discovery  ·
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Detects remote RPC calls to read information about scheduled tasks

Sigma rule (View on GitHub)

 1title: Remote Schedule Task Recon via ITaskSchedulerService
 2id: 7f7c49eb-2977-4ac8-8ab0-ab1bae14730e
 3status: test
 4description: Detects remote RPC calls to read information about scheduled tasks
 5references:
 6    - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931
 7    - https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md
 8    - https://github.com/zeronetworks/rpcfirewall
 9    - https://zeronetworks.com/blog/stopping-lateral-movement-via-the-rpc-firewall/
10author: Sagie Dulce, Dekel Paz
11date: 2022-01-01
12tags:
13    - attack.discovery
14logsource:
15    product: rpc_firewall
16    category: application
17    definition: 'Requirements: install and apply the RPC Firewall to all processes with "audit:true action:block uuid:86d35949-83c9-4044-b424-db363231fd0c"'
18detection:
19    selection:
20        EventLog: RPCFW
21        EventID: 3
22        InterfaceUuid: 86d35949-83c9-4044-b424-db363231fd0c
23    filter:
24        OpNum:
25            - 1
26            - 3
27            - 4
28            - 10
29            - 11
30            - 12
31            - 13
32            - 14
33            - 15
34    condition: selection and not filter
35falsepositives:
36    - Unknown
37level: high

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