Merge branch 'The-Haag-of-The-Storm' of https://github.com/splunk/security_content into The-Haag-of-The-Storm

This commit is contained in:
Detection Testing Service
2021-09-20 18:05:06 +00:00
3 changed files with 24 additions and 16 deletions
@@ -16,7 +16,11 @@ search: '| tstats `security_content_summariesonly` count FROM datamodel=Endpoint
Processes.dest Processes.process_path Processes.process Processes.parent_process_name
| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
| regex process="(dllhost\.exe.{0,4}$)" | `suspicious_dllhost_no_command_line_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 may be present in small environments.
Tuning may be required based on parent process.
references:
@@ -58,11 +62,11 @@ 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
@@ -5,7 +5,7 @@ date: '2021-09-20'
author: Michael Haag, Splunk
type: TTP
datamodel:
- Endpoint
- Endpoint
description: The following analytic identifies gpupdate.exe with no command line arguments.
It is unusual for gpupdate.exe to execute with no command line arguments present.
This particular behavior is common with malicious software, including Cobalt Strike.
@@ -62,11 +62,11 @@ 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
@@ -5,7 +5,7 @@ date: '2021-09-20'
author: Michael Haag, Splunk
type: TTP
datamodel:
- Endpoint
- Endpoint
description: The following analytic identifies rundll32.exe with no command line arguments.
It is unusual for rundll32.exe to execute with no command line arguments present.
This particular behavior is common with malicious software, including Cobalt Strike.
@@ -17,7 +17,11 @@ search: '| tstats `security_content_summariesonly` count FROM datamodel=Endpoint
Processes.dest Processes.process_path Processes.process Processes.parent_process_name
| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
| regex process="(rundll32\.exe.{0,4}$)" | `suspicious_rundll32_no_command_line_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: Although unlikely, some legitimate applications may use a moved
copy of rundll32, triggering a false positive.
references:
@@ -69,11 +73,11 @@ 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