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Code Issues Releases Wiki Activity

feat(threat-hunting): chisel proxy detection

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Ming Di Leom 2025-06-30 08:44:57 +00:00
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@ -2,7 +2,7 @@
title: Splunk Threat Hunting
layout: page
date: 2025-01-15
updated: 2025-06-01
updated: 2025-06-30
---
Some searches utilise [cmdb_ci_list_lookup](https://gitlab.com/curben/splunk-scripts/-/tree/main/Splunk_TA_snow) lookup.
@ -1531,11 +1531,11 @@ SPL:
## Unauthorised Reverse Proxy Tunnel
References: [1](https://thedfirreport.com/2024/08/12/threat-actors-toolkit-leveraging-sliver-poshc2-batch-scripts/#c14)
References: [1](https://thedfirreport.com/2024/08/12/threat-actors-toolkit-leveraging-sliver-poshc2-batch-scripts/#c14), [chisel](https://unit42.paloaltonetworks.com/cybercriminals-attack-financial-sector-across-africa/#section2SubHeading4)
SPL:
```spl
| tstats summariesonly=true allow_old_summaries=true count FROM datamodel=Endpoint.Processes WHERE index="windows" Processes.signature_id=4688 Processes.process_name IN ("ngrok.exe", "cloudflared.exe", "tailscale*.exe") BY index, host, Processes.signature_id, Processes.signature, Processes.process, Processes.user, _time span=1s
| tstats summariesonly=true allow_old_summaries=true count FROM datamodel=Endpoint.Processes WHERE index="windows" Processes.signature_id=4688 Processes.process_name IN ("ngrok.exe", "cloudflared.exe", "tailscale*.exe", "chisel*") BY index, host, Processes.signature_id, Processes.signature, Processes.process, Processes.user, _time span=1s
| rename Processes.* AS *, signature_id AS EventCode, signature AS EventDescription
| eval Time = strftime(_time, "%Y-%m-%d %H:%M:%S %z")
| lookup ad_users sAMAccountName AS user OUTPUT displayName AS Name, mail AS Email