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https://github.com/splunk/security_content
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Eric
71 lines
3.4 KiB
YAML
71 lines
3.4 KiB
YAML
name: MS Scripting Process Loading Ldap Module
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id: 0b0c40dc-14a6-11ec-b267-acde48001122
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version: 7
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date: '2025-05-02'
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author: Teoderick Contreras, Splunk
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status: production
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type: Anomaly
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description: The following analytic detects the execution of MS scripting processes
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(wscript.exe or cscript.exe) loading LDAP-related modules (Wldap32.dll, adsldp.dll,
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adsldpc.dll). It leverages Sysmon EventCode 7 to identify these specific DLL loads.
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This activity is significant as it may indicate an attempt to query LDAP for host
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information, a behavior observed in FIN7 implants. If confirmed malicious, this
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could allow attackers to gather detailed Active Directory information, potentially
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leading to further exploitation or data exfiltration.
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data_source:
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- Sysmon EventID 7
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search: '`sysmon` EventCode =7 Image IN ("*\\wscript.exe", "*\\cscript.exe") ImageLoaded
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IN ("*\\Wldap32.dll", "*\\adsldp.dll", "*\\adsldpc.dll") | fillnull | stats count
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min(_time) as firstTime max(_time) as lastTime by Image ImageLoaded dest loaded_file
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loaded_file_path original_file_name process_exec process_guid process_hash process_id
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process_name process_path service_dll_signature_exists service_dll_signature_verified
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signature signature_id user_id vendor_product | `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)` | `ms_scripting_process_loading_ldap_module_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. If you are using Sysmon, you must have at least version 6.0.4 of the
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Sysmon TA. Tune and filter known instances where renamed rundll32.exe may be used.
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known_false_positives: automation scripting language may used by network operator
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to do ldap query.
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references:
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- https://www.mandiant.com/resources/fin7-pursuing-an-enigmatic-and-evasive-global-criminal-operation
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- https://attack.mitre.org/groups/G0046/
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drilldown_searches:
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- name: View the detection results for - "$dest$"
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search: '%original_detection_search% | search dest = "$dest$"'
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earliest_offset: $info_min_time$
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latest_offset: $info_max_time$
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- name: View risk events for the last 7 days for - "$dest$"
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search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$dest$")
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starthoursago=168 | stats count min(_time) as firstTime max(_time) as lastTime
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values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories)
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as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic)
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as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)`'
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earliest_offset: $info_min_time$
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latest_offset: $info_max_time$
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rba:
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message: $process_name$ loading ldap modules $ImageLoaded$ on $dest$
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risk_objects:
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- field: dest
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type: system
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score: 9
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threat_objects: []
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tags:
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analytic_story:
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- FIN7
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asset_type: Endpoint
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mitre_attack_id:
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- T1059.007
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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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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/malware/fin7/fin7_js_2/sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: XmlWinEventLog
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