diff --git a/source/threat-hunting/index.md b/source/threat-hunting/index.md index 96c1361..46bf131 100644 --- a/source/threat-hunting/index.md +++ b/source/threat-hunting/index.md @@ -676,6 +676,16 @@ SPL: | makemv delim="^" RDPs ``` +## File hiding using attrib.exe observed + +Description: attrib.exe can be used to hide files from Explorer. +References: [1](https://thedfirreport.com/2025/03/31/fake-zoom-ends-in-blacksuit-ransomware/#defense-evasion), [2](https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/attrib) + +```spl +| tstats summariesonly=true allow_old_summaries=true fillnull_value="unknown" count FROM datamodel=Endpoint.Processes WHERE index="windows" Processes.process_name="attrib.exe" Processes.process IN ("*+h", "*+s*", "*+r*") BY index, host, Processes.signature_id, Processes.signature, Processes.parent_process, Processes.process, Processes.user, _time span=1s +| rename Processes.* AS *, signature_id AS EventCode, signature AS EventDescription +``` + ## Gootloader IOC References: [1](https://redcanary.com/blog/gootloader/)