Sigma rule: MITRE BZAR Indicators for Persistence

Rule

Title

MITRE BZAR Indicators for Persistence

Status

test

Level

medium

Author

@neu5ron, SOC Prime

Date

2020-03-19

Modified

2021-11-27

File

rules/network/zeek/zeek_dce_rpc_mitre_bzar_persistence.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Windows DCE-RPC functions which indicate a persistence techniques on the remote system. All credit for the Zeek mapping of the suspicious endpoint/operation field goes to MITRE.

Log source

product

zeek

service

dce_rpc

Detection

op1:
    endpoint: 'spoolss'
    operation: 'RpcAddMonitor'
op2:
    endpoint: 'spoolss'
    operation: 'RpcAddPrintProcessor'
op3:
    endpoint: 'IRemoteWinspool'
    operation: 'RpcAsyncAddMonitor'
op4:
    endpoint: 'IRemoteWinspool'
    operation: 'RpcAsyncAddPrintProcessor'
op5:
    endpoint: 'ISecLogon'
    operation: 'SeclCreateProcessWithLogonW'
op6:
    endpoint: 'ISecLogon'
    operation: 'SeclCreateProcessWithLogonExW'
condition: 1 of op*

False positives (as the rule lists them)

• Windows administrator tasks or troubleshooting
• Windows management scripts or software

Tags

• attack.privilege-escalation
• attack.persistence
• attack.t1547.004

MITRE ATT&CK ids this rule names

• T1547.004

References

• https://github.com/mitre-attack/bzar#indicators-for-attck-persistence

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/network/zeek/zeek_dce_rpc_mitre_bzar_persistence.yml