SigmaHQ/rules/apt/apt_chafer_mar18.yml

---
action: global
title: Chafer Activity
description: Detects Chafer activity attributed to OilRig as reported in Nyotron report in March 2018 
references:
    - https://nyotron.com/nyotron-discovers-next-generation-oilrig-attacks/
detection:
    condition: 1 of them
falsepositives:
    - Unknown
level: critical
---
logsource:
    product: windows
    service: system
detection:
    selection_service:
        EventID: 7045
        ServiceName:
            - 'SC Scheduled Scan'
            - 'UpdatMachine'
---
logsource:
   product: windows
   service: sysmon
detection:
    selection_reg1:
        EventID: 13 
        TargetObject: 
            - '*SOFTWARE\Microsoft\Windows\CurrentVersion\UMe'
            - '*SOFTWARE\Microsoft\Windows\CurrentVersion\UT'
        EventType: 'SetValue'
    selection_reg2:
        EventID: 13 
        TargetObject: 
            - '*\Control\SecurityProviders\WDigest\UseLogonCredential'
        EventType: 'SetValue'
        Details: 'DWORD (0x00000001)'
    selection_process1:
        EventID: 1 
        CommandLine: 
            - '*\Service.exe i'
            - '*\Service.exe u'
            - '*\microsoft\Taskbar\autoit3.exe'
            - 'C:\wsc.exe*'
    selection_process2:
        EventID: 1
        Image:
            - '*\Windows\Temp\DB\*.exe'