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P4T12ICK
63 lines
2.0 KiB
YAML
63 lines
2.0 KiB
YAML
name: Vbscript Execution Using Wscript App
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id: 35159940-228f-11ec-8a49-acde48001122
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version: 1
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date: '2021-10-01'
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author: Teoderick Contreras, Splunk
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status: production
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type: TTP
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description: This analytic is to detect a suspicious wscript commandline to execute
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vbscript. This technique was seen in several malware to execute malicious vbs file
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using wscript application. commonly vbs script is associated to cscript process
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and this can be a technique to evade process parent child detections or even some
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av script emulation system.
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data_source:
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- Sysmon Event ID 1
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search:
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selection1:
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ParentCommandLine: '*//e:vbscript*'
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ParentImage: wscript.exe
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selection2:
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CommandLine: '*//e:vbscript*'
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Image|endswith: wscript.exe
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condition: selection1 or selection2
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
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confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
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endpoint product.
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known_false_positives: unknown
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references:
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- https://www.joesandbox.com/analysis/369332/0/html
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tags:
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analytic_story:
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- FIN7
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- Remcos
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asset_type: Endpoint
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confidence: 70
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impact: 70
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message: Process name $process_name$ with commandline $process$ to execute vbsscript
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mitre_attack_id:
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- T1059.005
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- T1059
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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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- name: user
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type: User
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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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risk_score: 49
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1059.005/vbs_wscript/sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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