Try in Splunk Security Cloud

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

  • Last Updated: 2021-04-26
  • Author: Teoderick Contreras, Splunk
  • ID: 1804b0a4-a682-11eb-8f68-acde48001122

Annotations

ATT&CK

ATT&CK

ID Technique Tactic
T1055 Process Injection Defense Evasion, Privilege Escalation
Kill Chain Phase
  • Exploitation
NIST
  • DE.CM
CIS20
  • CIS 10
CVE 


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

Macros

The SPL above uses the following Macros:

:information_source: trickbot_named_pipe_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Required fields

List of fields required to use this analytic.

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

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. .

Known False Positives

unknown

Associated Analytic Story

RBA

Risk Score Impact Confidence Message
42.0 70 60 Possible Trickbot namedpipe created on $dest$ by $process_name$

:information_source: The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.

Reference

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

source | version: 1