Drive-by Compromise T1189

Events covered

9 catalog events are tagged with this technique by at least one rule.

Authoring guide

Patterns shared across the 39 rules above: which fields they filter on, what specific values they look for, and what they exclude. The catalog normalizes field names across vendors so Sigma's Image, Elastic's process.name, and Splunk's process_name collapse into one row. Each rule contributes at most once per row.

Fields filtered most (74 distinct)

The fields most rules look at when detecting this technique. The How column shows the operators authors use (eq, wildcard, regex_match, match) and how often each appears. Sample values are concrete examples to start from, not an exhaustive list.

Top indicator values (202 distinct)

Specific (field, operator, value) combinations the rules check for, ranked by how many rules under this technique use each one. The Corpus reach column counts how many rules across the entire catalog (any technique) check the same combination. High numbers point to widely-used indicators that are likely noisy on their own; combine them with another condition for useful signal. Blank means the combination is specific to rules under this technique. Click a value to expand the rules under this technique that use it.

Exclusions (26 distinct)

Field/operator/value combinations excluded by rules under this technique (top-level not() clauses), sorted by how many rules exclude each. These are the false-positive paths the community has learned to filter out. A new rule that ignores the high-count entries here will likely fire on the same noisy paths. Click a value to expand the rules under this technique that exclude it.

Rules under this technique

Every rule in the catalog tagged with this technique, grouped by vendor. Click a rule title for its full predicates, exclusions, and indicators.

Sigma 3 rules

• Cross Site Scripting Strings
• Flash Player Update from Suspicious Location
• Suspicious Browser Child Process - MacOS

Elastic 5 rules

• Potential Fake CAPTCHA Phishing Attack
• Potential Masquerading as Business App Installer
• Suspicious Browser Child Process
• Unusual Web Request
• WPS Office Exploitation via DLL Hijack

Splunk 1 rule

• Detect hosts connecting to dynamic domain providers

Kusto 30 rules

• A client made a web request to a potentially harmful file (ASIM Web Session schema)
• Apache - Request to sensitive files
• App Gateway WAF - XSS Detection
• Application Gateway WAF - XSS Detection
• Box - Executable file in folder
• Box - Forbidden file type downloaded
• Cisco Cloud Security - Request to blocklisted file type
• Cisco SDWAN - Intrusion Events
• Cisco SDWAN - IPS Event Threshold
• Cisco WSA - Internet access from public IP
• Cisco WSA - Multiple attempts to download unwanted file
• Cisco WSA - Multiple errors to resource from risky category
• Cisco WSA - Multiple infected files
• Cisco WSA - Unexpected file type
• Cisco WSA - Unscannable file or scan error
• Critical Risks
• Front Door Premium WAF - XSS Detection
• Malformed user agent
• McAfee ePO - Multiple threats on same host
• McAfee ePO - Threat was not blocked
• New UserAgent observed in last 24 hours
• NGINX - Request to sensitive files
• Oracle - Request to sensitive files
• Power Apps - Multiple users access a malicious link after launching new app
• RecordedFuture Threat Hunting Hash All Actors
• SlackAudit - Suspicious file downloaded.
• Tomcat - Request to sensitive files
• Vulerabilities
• Web sites blocked by Eset
• Website blocked by ESET