splunk-security_content/docs/_posts/2021-04-26-trickbot_named_pipe.md

title, excerpt, categories, last_modified_at, toc, toc_label, tags

title	excerpt	categories	last_modified_at	toc	toc_label	tags
Trickbot Named Pipe	Process Injection	Endpoint	2021-04-26	true		Process Injection Defense Evasion Privilege Escalation Splunk Enterprise Splunk Enterprise Security Splunk Cloud Endpoint

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Description

this search is to detect potential trickbot infection through the create/connected named pipe to the system. This technique is used by trickbot to communicate to its c2 to post or get command during infection.

• Type: TTP
• Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
• Datamodel: Endpoint
• Last Updated: 2021-04-26
• Author: Teoderick Contreras, Splunk
• ID: 1804b0a4-a682-11eb-8f68-acde48001122

ATT&CK

ID	Technique	Tactic
T1055	Process Injection	Defense Evasion, Privilege Escalation

Search

`sysmon` EventCode IN (17,18) PipeName="\\pipe\\*lacesomepipe" 
| stats  min(_time) as firstTime max(_time) as lastTime count by Computer user_id EventCode PipeName signature Image process_id 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `trickbot_named_pipe_filter`

Associated Analytic Story

• Trickbot

How To Implement

To successfully implement this search, you need to be ingesting logs with the process name and pipename from your endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the Sysmon TA. .

Required field

• _time
• Computer
• user_id
• EventCode
• PipeName
• signature
• Image
• process_id

Kill Chain Phase

• Exploitation

Known False Positives

unknown

RBA

Risk Score	Impact	Confidence	Message
42.0	70	60	Possible Trickbot namedpipe created on Computer by Image

Reference

• https://labs.vipre.com/trickbot-and-its-modules/
• https://blog.whitehat.eu/2019/05/incident-trickbot-ryuk-2.html

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

• https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/trickbot/namedpipe/windows-sysmon.log

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