Remote Schedule Task Recon via AtScv
Detects remote RPC calls to read information about scheduled tasks via AtScv
Sigma rule (View on GitHub)
1title: Remote Schedule Task Recon via AtScv
2id: f177f2bc-5f3e-4453-b599-57eefce9a59c
3status: test
4description: Detects remote RPC calls to read information about scheduled tasks via AtScv
5references:
6 - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931
7 - https://github.com/zeronetworks/rpcfirewall
8 - https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md
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:1ff70682-0a51-30e8-076d-740be8cee98b"'
18detection:
19 selection:
20 EventLog: RPCFW
21 EventID: 3
22 InterfaceUuid: 1ff70682-0a51-30e8-076d-740be8cee98b
23 filter:
24 OpNum:
25 - 0
26 - 1
27 condition: selection and not filter
28falsepositives:
29 - Unknown
30level: high
References
-
Specifies the Task Scheduler Service Remoting Protocol, which is used to register and configure a task and to inquire about
Read More -
-
A repository that maps commonly used attacks using MSRPC protocols to ATT&CK - jonny-jhnson/MSRPC-to-ATTACK
Read More -
RPC Firewall is a free & open source tool, which detects and protects against RPC based attacks used by ransomware for lateral movement and other attacks
Read More
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