Hub configuration

Name: Base64 MZ Header In CommandLine
Author: sigmahq

More info

Base64 MZ Header In CommandLine Detection Scenario by sigmahq | CrowdSec Hub

« Base64 MZ Header In CommandLine »
v0.2 by sigmahq / proc_creation_win_susp_inline_base64_mz_header
Attack scenariowindowsNot spoofableLow confidence

Detects encoded base64 MZ header in the commandline

Installation

cscli scenarios install sigmahq/proc_creation_win_susp_inline_base64_mz_header

YAML Configuration

1type: trigger
2name: sigmahq/proc_creation_win_susp_inline_base64_mz_header
3description: |
4  Detects encoded base64 MZ header in the commandline
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.CommandLine contains 'TVqQAAMAAAAEAAAA' || evt.Parsed.CommandLine contains 'TVpQAAIAAAAEAA8A' || evt.Parsed.CommandLine contains 'TVqAAAEAAAAEABAA' || evt.Parsed.CommandLine contains 'TVoAAAAAAAAAAAAA' || evt.Parsed.CommandLine contains 'TVpTAQEAAAAEAAAA')
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14
15  label: "Base64 MZ Header In CommandLine"
16  behavior : "windows:audit"
17  remediation: false
18
19scope:
20  type: ParentProcessId
21  expression: evt.Parsed.ParentProcessId
22
23

Hub configuration

« Base64 MZ Header In CommandLine »v0.2 by sigmahq / proc_creation_win_susp_inline_base64_mz_headerAttack scenariowindowsNot spoofableLow confidence

« Base64 MZ Header In CommandLine »
v0.2 by sigmahq / proc_creation_win_susp_inline_base64_mz_header
Attack scenariowindowsNot spoofableLow confidence