Hub configuration

Name: Bypass UAC via CMSTP
Author: sigmahq

More info

Bypass UAC via CMSTP Detection Scenario by sigmahq | CrowdSec Hub

« Bypass UAC via CMSTP »
v0.2 by sigmahq / proc_creation_win_uac_bypass_cmstp
Attack scenariowindowsNot spoofableLow confidence

Detect commandline usage of Microsoft Connection Manager Profile Installer (cmstp.exe) to install specially formatted local .INF files

Installation

cscli scenarios install sigmahq/proc_creation_win_uac_bypass_cmstp

YAML Configuration

1type: trigger
2name: sigmahq/proc_creation_win_uac_bypass_cmstp
3description: |
4  Detect commandline usage of Microsoft Connection Manager Profile Installer (cmstp.exe) to install specially formatted local .INF files
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\cmstp.exe' || evt.Parsed.OriginalFileName == 'CMSTP.EXE') && (evt.Parsed.CommandLine contains '/s' || evt.Parsed.CommandLine contains '-s' || evt.Parsed.CommandLine contains '/au' || evt.Parsed.CommandLine contains '-au' || evt.Parsed.CommandLine contains '/ni' || evt.Parsed.CommandLine contains '-ni'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1548.002
15   - attack.t1218.003
16
17  label: "Bypass UAC via CMSTP"
18  behavior : "windows:audit"
19  remediation: false
20
21scope:
22  type: ParentProcessId
23  expression: evt.Parsed.ParentProcessId
24
25

Hub configuration

« Bypass UAC via CMSTP »v0.2 by sigmahq / proc_creation_win_uac_bypass_cmstpAttack scenariowindowsNot spoofableLow confidenceMITRE:t1548MITRE:t1218

« Bypass UAC via CMSTP »
v0.2 by sigmahq / proc_creation_win_uac_bypass_cmstp
Attack scenariowindowsNot spoofableLow confidence