Hub configuration

Name: Suspicious Mshta.EXE Execution Patterns
Author: sigmahq

More info

Suspicious Mshta.EXE Execution Patterns Detection Scenario by sigmahq | CrowdSec Hub

« Suspicious Mshta.EXE Execution Patterns »
v0.2 by sigmahq / proc_creation_win_mshta_susp_pattern
Attack scenariowindowsNot spoofableLow confidence

Detects suspicious mshta process execution patterns

Installation

cscli scenarios install sigmahq/proc_creation_win_mshta_susp_pattern

YAML Configuration

1type: trigger
2name: sigmahq/proc_creation_win_mshta_susp_pattern
3description: |
4  Detects suspicious mshta process execution patterns
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\mshta.exe' || evt.Parsed.OriginalFileName == 'MSHTA.EXE') && (evt.Parsed.ParentImage endsWith '\\cmd.exe' || evt.Parsed.ParentImage endsWith '\\cscript.exe' || evt.Parsed.ParentImage endsWith '\\powershell.exe' || evt.Parsed.ParentImage endsWith '\\pwsh.exe' || evt.Parsed.ParentImage endsWith '\\regsvr32.exe' || evt.Parsed.ParentImage endsWith '\\rundll32.exe' || evt.Parsed.ParentImage endsWith '\\wscript.exe') && (evt.Parsed.CommandLine contains '\\AppData\\Local\\' || evt.Parsed.CommandLine contains 'C:\\ProgramData\\' || evt.Parsed.CommandLine contains 'C:\\Users\\Public\\' || evt.Parsed.CommandLine contains 'C:\\Windows\\Temp\\') || (evt.Parsed.Image endsWith '\\mshta.exe' || evt.Parsed.OriginalFileName == 'MSHTA.EXE') && not (evt.Parsed.Image startsWith 'C:\\Windows\\System32\\' || evt.Parsed.Image startsWith 'C:\\Windows\\SysWOW64\\' || evt.Parsed.CommandLine contains '.htm' || evt.Parsed.CommandLine contains '.hta' || evt.Parsed.CommandLine endsWith 'mshta.exe' || evt.Parsed.CommandLine endsWith 'mshta'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1106
15
16  label: "Suspicious Mshta.EXE Execution Patterns"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24

Hub configuration

« Suspicious Mshta.EXE Execution Patterns »v0.2 by sigmahq / proc_creation_win_mshta_susp_patternAttack scenariowindowsNot spoofableLow confidenceMITRE:t1106

« Suspicious Mshta.EXE Execution Patterns »
v0.2 by sigmahq / proc_creation_win_mshta_susp_pattern
Attack scenariowindowsNot spoofableLow confidence