Sigma rule: SharpHound Recon Account Discovery
A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-a0ab245213b2, updated 2022-01-01T00:00:00.000Z.
Rule
- Title
- SharpHound Recon Account Discovery
- Status
- test
- Level
- high
- Author
- Sagie Dulce, Dekel Paz
- Date
- 2022-01-01
- File
- rules/application/rpc_firewall/rpc_firewall_sharphound_recon_account.yml
- Commit
- ccbb0369507f796db0b0ae6854c8a2be471b9d84
Detects remote RPC calls useb by SharpHound to map remote connections and local group membership.
Log source
- product
- rpc_firewall
- category
- application
- definition
- Requirements: install and apply the RPC Firewall to all processes with "audit:true action:block uuid:6bffd098-a112-3610-9833-46c3f87e345a opnum:2
Detection
selection:
EventLog: RPCFW
EventID: 3
InterfaceUuid: 6bffd098-a112-3610-9833-46c3f87e345a
OpNum: 2
condition: selectionFalse positives (as the rule lists them)
- Unknown
Tags
- attack.t1087
- attack.discovery
MITRE ATT&CK ids this rule names
References
- https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-wkst/55118c55-2122-4ef9-8664-0c1ff9e168f3
- https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-WKST.md
- https://github.com/zeronetworks/rpcfirewall
- https://zeronetworks.com/blog/stopping-lateral-movement-via-the-rpc-firewall/
Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/application/rpc_firewall/rpc_firewall_sharphound_recon_account.yml
Sources and licences
SigmaHQ
"SharpHound Recon Account Discovery" by Sagie Dulce, Dekel Paz (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/application/rpc_firewall/rpc_firewall_sharphound_recon_account.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Cite this page
Dragons Eye Ransomware Tracker, "Sigma rule: SharpHound Recon Account Discovery",
entity page, dataset version ref-a0ab245213b2, updated 2022-01-01T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/65f77b1e-8e79-45bf-bb67-5988a8ce45a5 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 65f77b1e-8e79-45bf-bb67-5988a8ce45a5, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.