Sigma rule: Suspicious Child Process Of SQL Server

Rule

Title

Suspicious Child Process Of SQL Server

Status

test

Level

high

Author

FPT.EagleEye Team, wagga

Date

2020-12-11

Modified

2023-05-04

File

rules/windows/process_creation/proc_creation_win_mssql_susp_child_process.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects suspicious child processes of the SQLServer process. This could indicate potential RCE or SQL Injection.

Log source

product

windows

category

process_creation

Detection

selection:
    ParentImage|endswith: '\sqlservr.exe'
    Image|endswith:
        # You can add other uncommon or suspicious processes
        - '\bash.exe'
        - '\bitsadmin.exe'
        - '\cmd.exe'
        - '\netstat.exe'
        - '\nltest.exe'
        - '\ping.exe'
        - '\powershell.exe'
        - '\pwsh.exe'
        - '\regsvr32.exe'
        - '\rundll32.exe'
        - '\sh.exe'
        - '\systeminfo.exe'
        - '\tasklist.exe'
        - '\wsl.exe'
filter_optional_datev:
    ParentImage|startswith: 'C:\Program Files\Microsoft SQL Server\'
    ParentImage|endswith: 'DATEV_DBENGINE\MSSQL\Binn\sqlservr.exe'
    Image: 'C:\Windows\System32\cmd.exe'
    CommandLine|startswith: '"C:\Windows\system32\cmd.exe" '
condition: selection and not 1 of filter_optional_*

Tags

• attack.t1505.003
• attack.t1190
• attack.initial-access
• attack.persistence
• attack.privilege-escalation

MITRE ATT&CK ids this rule names

• T1190
• T1505.003

Related rules

• 344482e4-a477-436c-aa70-7536d18a48c7 (obsolete)

References

• Internal Research

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