Remote Schedule Task Recon via AtScv

 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
12modified: 2022-01-01
13tags:
14    - attack.discovery
15logsource:
16    product: rpc_firewall
17    category: application
18    definition: 'Requirements: install and apply the RPC Firewall to all processes with "audit:true action:block uuid:1ff70682-0a51-30e8-076d-740be8cee98b"'
19detection:
20    selection:
21        EventLog: RPCFW
22        EventID: 3
23        InterfaceUuid: 1ff70682-0a51-30e8-076d-740be8cee98b
24    filter:
25        OpNum:
26            - 0
27            - 1
28    condition: selection and not filter
29falsepositives:
30    - Unknown
31level: high

References

• [MS-TSCH]: Task Scheduler Service Remoting Protocol

  

  Specifies the Task Scheduler Service Remoting Protocol, which is used to register and configure a task and to inquire about

  
  Read More

• GitHub - zeronetworks/rpcfirewall

  

  Contribute to zeronetworks/rpcfirewall development by creating an account on GitHub.

  
  Read More

• MSRPC-to-ATTACK/documents/MS-TSCH.md at ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3 · jsecurity101/MSRPC-to-ATTACK

  

  A repository that maps commonly used attacks using MSRPC protocols to ATT&CK - jsecurity101/MSRPC-to-ATTACK

  
  Read More

• Stopping Lateral Movement via the RPC Firewall - Sagie Dulce

  

  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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