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tccontre
89 lines
3.4 KiB
YAML
89 lines
3.4 KiB
YAML
name: Impacket Lateral Movement Commandline Parameters
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id: 8ce07472-496f-11ec-ab3b-3e22fbd008af
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version: 2
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date: '2022-01-18'
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author: Mauricio Velazco, Splunk
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type: TTP
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datamodel:
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- Endpoint
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description: This analytic looks for the presence of suspicious commandline parameters
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typically present when using Impacket tools. Impacket is a collection of python
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classes meant to be used with Microsoft network protocols. There are multiple scripts
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that leverage impacket libraries like `wmiexec.py`, `smbexec.py`, `dcomexec.py`
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and `atexec.py` used to execute commands on remote endpoints. By default, these
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scripts leverage administrative shares and hardcoded parameters that can be used
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as a signature to detect its use. Red Teams and adversaries alike may leverage Impackets
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tools for lateral movement and remote code execution.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where (Processes.process = "*/c* \\\\127.0.0.1\\*"
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OR Processes.process= "*/c* 2>&1") by Processes.dest Processes.user Processes.parent_process_name
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Processes.process_name Processes.process Processes.process_id Processes.parent_process_id
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| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`| `security_content_ctime(lastTime)`
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| `impacket_lateral_movement_commandline_parameters_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints.
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known_false_positives: Although uncommon, Administrators may leverage Impackets tools
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to start a process on remote systems for system administration or automation use
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cases.
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references:
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- https://attack.mitre.org/techniques/T1021/002/
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- https://attack.mitre.org/techniques/T1021/003/
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- https://attack.mitre.org/techniques/T1047/
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- https://attack.mitre.org/techniques/T1053/
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- https://attack.mitre.org/techniques/T1053/005/
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- https://github.com/SecureAuthCorp/impacket
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- https://vk9-sec.com/impacket-remote-code-execution-rce-on-windows-from-linux/
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- https://www.microsoft.com/security/blog/2022/01/15/destructive-malware-targeting-ukrainian-organizations/
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tags:
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analytic_story:
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- Active Directory Lateral Movement
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- WhisperGate
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- Industroyer2
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- CISA AA22-277A
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- Prestige Ransomware
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confidence: 70
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context:
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- Source:Endpoint
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- Stage:Lateral Movement
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1021.003/impacket/windows-sysmon.log
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impact: 90
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kill_chain_phases:
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- Exploitation
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message: Suspicious command line parameters on $dest may represent a lateral movement
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attack with Impackets tools
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mitre_attack_id:
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- T1021
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- T1021.002
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- T1021.003
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- T1047
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- T1543.003
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observable:
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- name: dest
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type: Endpoint
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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- Processes.dest
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- Processes.user
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.original_file_name
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_path
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- Processes.process_path
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- Processes.parent_process_id
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risk_score: 63
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security_domain: endpoint
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supported_tas:
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- Splunk_TA_microsoft_sysmon
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asset_type: Endpoint
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