mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
divious1
115 lines
4.0 KiB
YAML
115 lines
4.0 KiB
YAML
asset_type: Endpoint
|
|
confidence: medium
|
|
creation_date: '2017-10-09'
|
|
data_metadata:
|
|
data_models:
|
|
- Endpoint
|
|
data_source:
|
|
- Endpoint Intel
|
|
providing_technologies:
|
|
- Carbon Black Response
|
|
- CrowdStrike Falcon
|
|
- Sysmon
|
|
- Tanium
|
|
- Ziften
|
|
description: This search looks for the execution of the cscript.exe or wscript.exe
|
|
processes, with a parent of cmd.exe. The search will return the count, the first
|
|
and last time this execution was seen on a machine, the user, and the destination
|
|
of the machine
|
|
detect:
|
|
splunk:
|
|
correlation_rule:
|
|
notable:
|
|
nes_fields: dest, process_name, parent_process
|
|
rule_description: Potentially malicious script execution detected.
|
|
rule_title: 'Command prompt is executing scripts on $dest$ using $process_name$ '
|
|
risk:
|
|
risk_object: dest
|
|
risk_object_type:
|
|
- system
|
|
risk_score: 50
|
|
schedule:
|
|
cron_schedule: 0 * * * *
|
|
earliest_time: -70m@m
|
|
latest_time: -10m@m
|
|
search: '| tstats `security_content_summariesonly` count values(Processes.process) min(_time)
|
|
as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where
|
|
Processes.parent_process="*cmd.exe" (Processes.process_name=cscript.exe OR
|
|
Processes.process_name =wscript.exe) by Processes.parent_process Processes.process_name
|
|
Processes.user Processes.dest | `drop_dm_object_name("Processes")` | `security_content_ctime(firstTime)`|`security_content_ctime(lastTime)`'
|
|
suppress:
|
|
suppress_fields: dest, process_name
|
|
suppress_period: 86400s
|
|
eli5: Attackers often leverage various scripting languages to execute their attacks.
|
|
In a Windows environment, the Windows Script Host is the tool that interprets the
|
|
scripts and is included in all modern versions of Windows. The Windows Script Host
|
|
is available as a command-line tool called "cscript.exe" or "wscript.exe." To detect
|
|
this behavior, the search looks for process-creation events for cscript.exe or wscript.exe
|
|
with a parent process of cmd.exe. The search will return the count, the first and
|
|
last times this behavior was seen on a destination machine, and user and process
|
|
information.
|
|
entities:
|
|
- dest
|
|
- process_name
|
|
- user
|
|
how_to_implement: To successfully implement this search, you must be ingesting data
|
|
that records process activity from your hosts to populate the endpoint data model
|
|
in the processes node. If you are using Sysmon, you must have at least version 6.0.4
|
|
of the Sysmon TA.
|
|
id: b89919ed-fe5f-492c-b139-95dbb162039e
|
|
investigations:
|
|
- id: bc91a8cf-35e7-4bb2-8140-e756cc06fd76
|
|
name: Get Authentication Logs For Endpoint
|
|
type: splunk
|
|
- id: fecf2918-670d-4f1c-872b-3d7317a41bf9
|
|
name: Get Parent Process Info
|
|
type: splunk
|
|
- id: fdcfb369-1725-4c24-824a-22972d7f0d55
|
|
name: Get Risk Modifiers For User
|
|
type: splunk
|
|
- id: bc91a8cf-35e7-4bb2-8140-e756cc06fd71
|
|
name: Get Process Info
|
|
type: splunk
|
|
- id: 3d6c3213-5fff-4a1e-b57d-b24c262171e7
|
|
name: Get Notable History
|
|
type: splunk
|
|
- id: f3fb4d1b-5f33-4b01-b541-c7af9534c242
|
|
name: Get Notable Info
|
|
type: splunk
|
|
- id: fdcfb369-1725-4c24-824a-22972d7f0d65
|
|
name: Get Risk Modifiers For Endpoint
|
|
type: splunk
|
|
- id: bc91a8cf-35e7-4bb2-8140-e756cc06fd74
|
|
name: Get User Information from Identity Table
|
|
type: splunk
|
|
- id: bc91a8cf-35e7-4bb2-8140-e756cc06fd22
|
|
name: Investigate Web Activity From Host
|
|
type: splunk
|
|
known_false_positives: Some legitimate applications may exhibit this behavior.
|
|
maintainers:
|
|
- company: Splunk
|
|
email: bpatel@splunk.com
|
|
name: Bhavin Patel
|
|
mappings:
|
|
cis20:
|
|
- CIS 8
|
|
kill_chain_phases:
|
|
- Exploitation
|
|
mitre_attack:
|
|
- Execution
|
|
- Command-Line Interface
|
|
nist:
|
|
- PR.PT
|
|
- DE.CM
|
|
modification_date: '2018-11-02'
|
|
name: Detect Use of cmd.exe to Launch Script Interpreters
|
|
original_authors:
|
|
- company: Splunk
|
|
email: bpatel@splunk.com
|
|
name: Bhavin Patel
|
|
references: []
|
|
security_domain: endpoint
|
|
spec_version: 2
|
|
type: splunk
|
|
version: '2.0'
|