mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
pyth0n1c
71 lines
2.6 KiB
YAML
71 lines
2.6 KiB
YAML
author: Teoderick Contreras, Splunk
|
|
datamodel:
|
|
- Endpoint
|
|
date: '2021-10-01'
|
|
description: This analytic is to detect a suspicious wscript commandline to execute
|
|
vbscript. This technique was seen in several malware to execute malicious vbs file
|
|
using wscript application. commonly vbs script is associated to cscript process
|
|
and this can be a technique to evade process parent child detections or even some
|
|
av script emulation system.
|
|
how_to_implement: To successfully implement this search you need to be ingesting information
|
|
on process that include the name of the process responsible for the changes from
|
|
your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
|
|
confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
|
|
endpoint product.
|
|
id: 35159940-228f-11ec-8a49-acde48001122
|
|
known_false_positives: unknown
|
|
name: Vbscript Execution Using Wscript App
|
|
references:
|
|
- https://www.joesandbox.com/analysis/369332/0/html
|
|
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
|
|
as lastTime from datamodel=Endpoint.Processes where (Processes.parent_process_name
|
|
= "wscript.exe" AND Processes.parent_process = "*//e:vbscript*") OR (Processes.process_name
|
|
= "wscript.exe" AND Processes.process = "*//e:vbscript*") by Processes.parent_process_name
|
|
Processes.parent_process Processes.process_name Processes.process_id Processes.process
|
|
Processes.dest Processes.user | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`
|
|
| `security_content_ctime(lastTime)` | `vbscript_execution_using_wscript_app_filter`'
|
|
tags:
|
|
analytic_story:
|
|
- FIN7
|
|
- Remcos
|
|
automated_detection_testing: passed
|
|
confidence: 70
|
|
context:
|
|
- Source:Endpoint
|
|
- Stage:Execution
|
|
dataset:
|
|
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1059.005/vbs_wscript/sysmon.log
|
|
impact: 70
|
|
kill_chain_phases:
|
|
- Exploitation
|
|
message: Process name $process_name$ with commandline $process$ to execute vbsscript
|
|
mitre_attack_id:
|
|
- T1059.005
|
|
- T1059
|
|
observable:
|
|
- name: dest
|
|
role:
|
|
- Victim
|
|
type: Endpoint
|
|
- name: user
|
|
role:
|
|
- Victim
|
|
type: User
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
required_fields:
|
|
- Endpoint.Processes.dest
|
|
- Endpoint.Processes.parent_process
|
|
- Endpoint.Processes.parent_process_name
|
|
- Endpoint.Processes.process
|
|
- Endpoint.Processes.process_id
|
|
- Endpoint.Processes.process_name
|
|
- Endpoint.Processes.user
|
|
- _time
|
|
risk_score: 49
|
|
security_domain: endpoint
|
|
type: TTP
|
|
version: 1
|