Name:Cisco Secure Firewall - Privileged Command Execution via HTTP id:0c1d2e3f-4a5b-6c7d-8e9f-0a1b2c3d4e5f version:5 date:None author:Nasreddine Bencherchali, Michael Haag, Splunk status:production type:Anomaly Description:This analytic detects HTTP requests to privileged execution paths on Cisco routers, specifically targeting the `/level/15/exec/-/*` endpoint using Cisco Secure Firewall Intrusion Events.
This detection leverages Snort signature 65370 to identify requests to these sensitive endpoints, which when combined with other indicators may signal active exploitation or post-compromise activity.
Data_source:
search:`cisco_secure_firewall` EventType=IntrusionEvent signature_id=65370 | fillnull | stats dc(signature_id) as unique_signature_count values(signature_id) as signature_id values(signature) as signature values(class_desc) as class_desc values(MitreAttackGroups) as MitreAttackGroups values(InlineResult) as InlineResult values(InlineResultReason) as InlineResultReason values(src) as src values(dest_port) as dest_port values(rule) as rule values(transport) as transport values(app) as app min(_time) as firstTime max(_time) as lastTime by dest | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `cisco_secure_firewall___privileged_command_execution_via_http_filter`
how_to_implement:This search requires Cisco Secure Firewall Threat Defense Logs, which
includes the FileEvent EventType. This search uses an input macro named `cisco_secure_firewall`.
We strongly recommend that you specify your environment-specific configurations
(index, source, sourcetype, etc.) for Cisco Secure Firewall Threat Defense logs. Replace the macro definition
with configurations for your Splunk environment. The search also uses a post-filter
macro designed to filter out known false positives.
The logs are to be ingested using the Splunk Add-on for Cisco Security Cloud (https://splunkbase.splunk.com/app/7404).
The malware & file access policy must also enable logging.
known_false_positives:No false positives have been identified yet.
References: -https://www.cisa.gov/news-events/cybersecurity-advisories/aa25-239a drilldown_searches: name:'View the detection results for - "$src$"' search:'%original_detection_search% | search src = "$src$"' earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' name:'View risk events for the last 7 days for - "$src$"' search:'| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$src$") | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`' earliest_offset:'7d' latest_offset:'0' analytic_story:['Cisco Secure Firewall Threat Defense Analytics', 'Salt Typhoon']
