name: Shim Database Installation With Suspicious Parameters
id: 404620de-46d8-48b6-90cc-8a8d7b0876a3
version: 4
date: '2020-11-23'
author: David Dorsey, Splunk
type: batch
datamodel:
- Endpoint
description: This search detects the process execution and arguments required to silently
  create a shim database.  The sdbinst.exe application is used to install shim database
  files (.sdb). A shim is a small library which transparently intercepts an API, changes
  the parameters passed, handles the operation itself, or redirects the operation
  elsewhere.
search: '| tstats `security_content_summariesonly` values(Processes.process) as process
  min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes
  where Processes.process_name = sdbinst.exe by Processes.process_name Processes.parent_process_name
  Processes.dest Processes.user | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`
  | `security_content_ctime(lastTime)` | `shim_database_installation_with_suspicious_parameters_filter`'
how_to_implement: You must be ingesting data that records process activity from your
  hosts to populate the Endpoint data model in the Processes node. You must also be
  ingesting logs with both the process name and command line from your endpoints.
  The command-line arguments are mapped to the "process" field in the Endpoint data
  model.
known_false_positives: None identified
references: []
tags:
  analytic_story:
  - Windows Persistence Techniques
  asset_type: Endpoint
  automated_detection_testing: passed
  cis20:
  - CIS 8
  dataset:
  - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1546.011/atomic_red_team/windows-sysmon.log
  kill_chain_phases:
  - Actions on Objectives
  mitre_attack_id:
  - T1546.011
  nist:
  - DE.CM
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  required_fields:
  - _time
  - Processes.process_name
  - Processes.parent_process_name
  - Processes.dest
  - Processes.user
  security_domain: endpoint
