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Added detection testing service results inCertUtil Download With VerifyCtl and Split Arguments

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2021-09-21 19:28:43 +00:00
parent f257545630
commit badfacb77e
1 changed files with 11 additions and 7 deletions
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detections/endpoint/certutil_download_with_verifyctl_and_split_arguments.yml
+11 -7
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@@ -14,12 +14,16 @@ description: 'Certutil.exe may download a file from a remote destination using `
the remote IP or domain in question. Using `-VerifyCtl`, the file will either be
written to the current working directory or `%APPDATA%\..\LocalLow\Microsoft\CryptnetUrlCache\Content\<hash>`. '
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
as lastTime from datamodel=Endpoint.Processes where `process_certutil`
Processes.process=*verifyctl* Processes.process=*split* by Processes.dest Processes.user Processes.original_file_name
as lastTime from datamodel=Endpoint.Processes where `process_certutil` Processes.process=*verifyctl*
Processes.process=*split* by Processes.dest Processes.user Processes.original_file_name
Processes.parent_process Processes.process_name Processes.process Processes.process_id
Processes.parent_process_id | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)` | `certutil_download_with_verifyctl_and_split_arguments_filter`'
how_to_implement: To successfully implement this search you need to be ingesting information on process that include the name of the process responsible for the changes from your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition, confirm the latest CIM App 4.20 or higher is installed and the latest TA for the endpoint product.
how_to_implement: To successfully implement this search you need to be ingesting information
on process that include the name of the process responsible for the changes from
your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
endpoint product.
known_false_positives: Limited false positives in most environments, however tune
as needed based on parent-child relationship or network connection.
references:
@@ -70,11 +74,11 @@ tags:
- _time
- Processes.dest
- Processes.user
- Processes.parent_process_name #parent process name
- Processes.parent_process #parent cmdline
- Processes.parent_process_name
- Processes.parent_process
- Processes.original_file_name
- Processes.process_name #process name
- Processes.process #process cmdline
- Processes.process_name
- Processes.process
- Processes.process_id
- Processes.parent_process_path
- Processes.process_path