Unsigned Binary Loaded From Suspicious Location

Title: Unsigned Binary Loaded From Suspicious Location
Status: test
Description:Detects Code Integrity (CI) engine blocking processes from loading unsigned DLLs residing in suspicious locations
References:
  -https://github.com/nasbench/EVTX-ETW-Resources/blob/45fd5be71a51aa518b1b36d4e1f36af498084e27/ETWEventsList/CSV/Windows11/21H2/W11_21H2_Pro_20220719_22000.795/Providers/Microsoft-Windows-Security-Mitigations.csv
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2022-08-03
modified:2022-09-28
Tags:

• -'attack.privilege-escalation'
• -'attack.persistence'
• -'attack.execution'
• -'attack.stealth'
• -'attack.t1574.001'

Logsource:

• product: windows
• service: security-mitigations

Detection:
  selection:
    EventID:
      -'11'
      -'12'

    ImageName|contains:
      -'\Users\Public\'
      -'\PerfLogs\'
      -'\Desktop\'
      -'\Downloads\'
      -'\AppData\Local\Temp\'
      -'C:\Windows\TEMP\'

  condition:selection
Falsepositives:
  -Unknown
Level: high