mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
research bot
76 lines
2.8 KiB
YAML
76 lines
2.8 KiB
YAML
name: Detect SharpHound Usage
|
|
id: dd04b29a-beed-11eb-87bc-acde48001122
|
|
version: 1
|
|
date: '2021-05-27'
|
|
author: Michael Haag, Splunk
|
|
type: batch
|
|
datamodel:
|
|
- Endpoint
|
|
description: The following analytic identifies SharpHound binary usage by using the
|
|
`OriginalFileName` from Sysmon. In addition to renaming the PE, other coverage is
|
|
available to detect command-line arguments. This particular analytic only looks
|
|
for the OriginalFileName of `SharpHound.exe`. It is possible older instances of
|
|
SharpHound.exe have different original filenames. Dependent upon the operator, the
|
|
code may be re-compiled and the attributes removed or changed to anything else.
|
|
During triage, review the metadata of the binary in question. Review parallel processes
|
|
for suspicious behavior. Identify the source of this binary.
|
|
search: '`sysmon` EventID=1 (OriginalFileName=SharpHound.exe process_name!=sharphound.exe)
|
|
| stats count min(_time) as firstTime max(_time) as lastTime by Computer, User,
|
|
parent_process_name, process_name, OriginalFileName, process_path, CommandLine Product
|
|
| rename Computer as dest | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
|
|
| `detect_sharphound_usage_filter`'
|
|
how_to_implement: To successfully implement this search, you need to be ingesting
|
|
logs with the process name, parent process, and command-line executions from your
|
|
endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the
|
|
Sysmon TA.
|
|
known_false_positives: False positives should be limited as this is specific to a
|
|
file attribute not used by anything else. Filter as needed.
|
|
references:
|
|
- https://attack.mitre.org/software/S0521/
|
|
- https://thedfirreport.com/?s=bloodhound
|
|
- https://github.com/BloodHoundAD/BloodHound/tree/master/Collectors
|
|
- https://github.com/BloodHoundAD/SharpHound3
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1059.001/T1059.001.md#atomic-test-2---run-bloodhound-from-local-disk
|
|
tags:
|
|
analytic_story:
|
|
- Discovery Techniques
|
|
- Ransomware
|
|
automated_detection_testing: passed
|
|
confidence: 80
|
|
context:
|
|
- Source:Endpoint
|
|
- Stage:Discovery
|
|
dataset:
|
|
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1059.001/sharphound/windows-sysmon.log
|
|
impact: 30
|
|
kill_chain_phases:
|
|
- Reconnaissance
|
|
message: Potential SharpHound binary identified on $dest$
|
|
mitre_attack_id:
|
|
- T1087.002
|
|
- T1087.001
|
|
- T1482
|
|
- T1069.002
|
|
- T1069.001
|
|
observable:
|
|
- name: dest
|
|
type: Endpoint
|
|
role:
|
|
- Victim
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
required_fields:
|
|
- _time
|
|
- dest
|
|
- User
|
|
- parent_process_name
|
|
- process_name
|
|
- OriginalFileName
|
|
- process_path
|
|
- CommandLine
|
|
- Product
|
|
risk_score: 24
|
|
security_domain: endpoint
|