Hub configuration

Name: Potentially Suspicious Office Document Executed From Trusted Location
Author: sigmahq

More info

Potentially Suspicious Office Document Executed From Trusted Location Detection Scenario by sigmahq | CrowdSec Hub

« Potentially Suspicious Office Document Executed From Trusted Location »
v0.2 by sigmahq / proc_creation_win_office_exec_from_trusted_locations
Attack scenariowindowsNot spoofableLow confidence

Detects the execution of an Office application that points to a document that is located in a trusted location. Attackers often used this to avoid macro security and execute their malicious code.

Installation

cscli scenarios install sigmahq/proc_creation_win_office_exec_from_trusted_locations

YAML Configuration

1type: trigger
2name: sigmahq/proc_creation_win_office_exec_from_trusted_locations
3description: |
4  Detects the execution of an Office application that points to a document that is located in a trusted location. Attackers often used this to avoid macro security and execute their malicious code.
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.ParentImage endsWith '\\explorer.exe' || evt.Parsed.ParentImage endsWith '\\dopus.exe') && (evt.Parsed.Image endsWith '\\EXCEL.EXE' || evt.Parsed.Image endsWith '\\POWERPNT.EXE' || evt.Parsed.Image endsWith '\\WINWORD.exe' || evt.Parsed.OriginalFileName in ['Excel.exe', 'POWERPNT.EXE', 'WinWord.exe']) && (evt.Parsed.CommandLine contains '\\AppData\\Roaming\\Microsoft\\Templates' || evt.Parsed.CommandLine contains '\\AppData\\Roaming\\Microsoft\\Word\\Startup\\' || evt.Parsed.CommandLine contains '\\Microsoft Office\\root\\Templates\\' || evt.Parsed.CommandLine contains '\\Microsoft Office\\Templates\\') && not (evt.Parsed.CommandLine endsWith '.dotx' || evt.Parsed.CommandLine endsWith '.xltx' || evt.Parsed.CommandLine endsWith '.potx'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1202
15
16  label: "Potentially Suspicious Office Document Executed From Trusted Location"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24

Hub configuration

« Potentially Suspicious Office Document Executed From Trusted Location »v0.2 by sigmahq / proc_creation_win_office_exec_from_trusted_locationsAttack scenariowindowsNot spoofableLow confidenceMITRE:t1202

« Potentially Suspicious Office Document Executed From Trusted Location »
v0.2 by sigmahq / proc_creation_win_office_exec_from_trusted_locations
Attack scenariowindowsNot spoofableLow confidence