Hub configuration

Name: Suspicious Usage Of ShellExec_RunDLL
Author: sigmahq

More info

Suspicious Usage Of ShellExec_RunDLL Detection Scenario by sigmahq | CrowdSec Hub

« Suspicious Usage Of ShellExec_RunDLL »
v0.2 by sigmahq / proc_creation_win_rundll32_susp_shellexec_execution
Attack scenariowindowsNot spoofableLow confidence

Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin attack

Installation

cscli scenarios install sigmahq/proc_creation_win_rundll32_susp_shellexec_execution

YAML Configuration

1type: trigger
2name: sigmahq/proc_creation_win_rundll32_susp_shellexec_execution
3description: |
4  Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin attack
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.CommandLine contains 'ShellExec_RunDLL' && (evt.Parsed.CommandLine contains 'regsvr32' || evt.Parsed.CommandLine contains 'msiexec' || evt.Parsed.CommandLine contains '\\Users\\Public\\' || evt.Parsed.CommandLine contains 'odbcconf' || evt.Parsed.CommandLine contains '\\Desktop\\' || evt.Parsed.CommandLine contains '\\Temp\\' || evt.Parsed.CommandLine contains 'Invoke-' || evt.Parsed.CommandLine contains 'iex' || evt.Parsed.CommandLine contains 'comspec'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14
15  label: "Suspicious Usage Of ShellExec_RunDLL"
16  behavior : "windows:audit"
17  remediation: false
18
19scope:
20  type: ParentProcessId
21  expression: evt.Parsed.ParentProcessId
22
23

Hub configuration

« Suspicious Usage Of ShellExec_RunDLL »v0.2 by sigmahq / proc_creation_win_rundll32_susp_shellexec_executionAttack scenariowindowsNot spoofableLow confidence

« Suspicious Usage Of ShellExec_RunDLL »
v0.2 by sigmahq / proc_creation_win_rundll32_susp_shellexec_execution
Attack scenariowindowsNot spoofableLow confidence