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P4T12ICK
81 lines
2.5 KiB
YAML
81 lines
2.5 KiB
YAML
name: Suspicious Copy on System32
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id: ce633e56-25b2-11ec-9e76-acde48001122
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version: 1
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date: '2021-10-05'
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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 copy of file from systemroot
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folder of the windows OS. This technique is commonly used by APT or other malware
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as part of execution (LOLBIN) to run its malicious code using the available legitimate
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tool in OS. this type of event may seen or may execute of normal user in some instance
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but this is really a anomaly that needs to be check within the network.
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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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ParentImage:
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- cmd.exe
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- powershell*
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- pwsh.exe
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- sqlps.exe
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- sqltoolsps.exe
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- powershell_ise.exe
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selection2:
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OriginalFileName: copy.exe
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selection3:
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Image|endswith: copy.exe
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selection4:
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Image|endswith: xcopy.exe
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selection5:
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OriginalFileName: xcopy.exe
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selection6:
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CommandLine:
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- '*\\Windows\\System32\*'
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- '*\\Windows\\SysWow64\\*'
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selection7:
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CommandLine: '*copy*'
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condition: selection1 and selection2 and selection3 and selection4 and selection5
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and selection6 and selection7
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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: every user may do this event but very un-ussual.
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references:
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- https://www.hybrid-analysis.com/sample/8da5b75b6380a41eee3a399c43dfe0d99eeefaa1fd21027a07b1ecaa4cd96fdd?environmentId=120
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tags:
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analytic_story:
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- Unusual Processes
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- Qakbot
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- IcedID
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asset_type: Endpoint
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confidence: 90
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impact: 70
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message: execution of copy exe to copy file from $process$ in $dest$
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mitre_attack_id:
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- T1036.003
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- T1036
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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: 63
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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/T1036.003/copy_sysmon/sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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