mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Eric McGinnis
81 lines
3.9 KiB
YAML
81 lines
3.9 KiB
YAML
name: CMD Carry Out String Command Parameter
|
|
id: 54a6ed00-3256-11ec-b031-acde48001122
|
|
version: 19
|
|
creation_date: '2021-10-21'
|
|
modification_date: '2026-05-13'
|
|
author: Teoderick Contreras, Bhavin Patel, Splunk
|
|
status: production
|
|
type: Hunting
|
|
description: The following analytic detects the use of `cmd.exe /c` to execute commands, a technique often employed by adversaries and malware to run batch commands or invoke other shells like PowerShell. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions and process metadata. Monitoring this activity is crucial as it can indicate script-based attacks or unauthorized command execution. If confirmed malicious, this behavior could lead to unauthorized code execution, privilege escalation, or persistence within the environment.
|
|
data_source:
|
|
- Sysmon EventID 1
|
|
- Windows Event Log Security 4688
|
|
- CrowdStrike ProcessRollup2
|
|
search: |-
|
|
| tstats `security_content_summariesonly` min(_time) as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Processes
|
|
WHERE `process_cmd`
|
|
AND
|
|
Processes.process IN ("*/c*", "*/k*")
|
|
BY Processes.action Processes.dest Processes.original_file_name
|
|
Processes.parent_process Processes.parent_process_exec Processes.parent_process_guid
|
|
Processes.parent_process_id Processes.parent_process_name Processes.parent_process_path
|
|
Processes.process Processes.process_exec Processes.process_guid
|
|
Processes.process_hash Processes.process_id Processes.process_integrity_level
|
|
Processes.process_name Processes.process_path Processes.user
|
|
Processes.user_id Processes.vendor_product
|
|
| `drop_dm_object_name(Processes)`
|
|
| `security_content_ctime(firstTime)`
|
|
| `security_content_ctime(lastTime)`
|
|
| `cmd_carry_out_string_command_parameter_filter`
|
|
how_to_implement: The detection is based on data that originates from Endpoint Detection and Response (EDR) agents. These agents are designed to provide security-related telemetry from the endpoints where the agent is installed. To implement this search, you must ingest logs that contain the process GUID, process name, and parent process. Additionally, you must ingest complete command-line executions. These logs must be processed using the appropriate Splunk Technology Add-ons that are specific to the EDR product. The logs must also be mapped to the `Processes` node of the `Endpoint` data model. Use the Splunk Common Information Model (CIM) to normalize the field names and speed up the data modeling process.
|
|
known_false_positives: False positives may be high based on legitimate scripted code in any environment. Filter as needed.
|
|
references:
|
|
- https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/
|
|
- https://www.microsoft.com/security/blog/2022/01/15/destructive-malware-targeting-ukrainian-organizations/
|
|
analytic_story:
|
|
- StealC Stealer
|
|
- PlugX
|
|
- Warzone RAT
|
|
- Data Destruction
|
|
- Winter Vivern
|
|
- WhisperGate
|
|
- ProxyNotShell
|
|
- DarkGate Malware
|
|
- Chaos Ransomware
|
|
- Hermetic Wiper
|
|
- Quasar RAT
|
|
- Rhysida Ransomware
|
|
- DarkCrystal RAT
|
|
- Qakbot
|
|
- IcedID
|
|
- CISA AA23-347A
|
|
- Azorult
|
|
- Living Off The Land
|
|
- Crypto Stealer
|
|
- Malicious Inno Setup Loader
|
|
- NjRAT
|
|
- AsyncRAT
|
|
- RedLine Stealer
|
|
- Log4Shell CVE-2021-44228
|
|
- Interlock Rat
|
|
- 0bj3ctivity Stealer
|
|
- Gh0st RAT
|
|
asset_type: Endpoint
|
|
cve:
|
|
- CVE-2021-44228
|
|
mitre_attack_id:
|
|
- T1059.003
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
category: endpoint
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/icedid/cmd_carry_str_param/sysmon.log
|
|
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
|
|
sourcetype: XmlWinEventLog
|
|
test_type: unit
|