Suspicious Vulnerable ASUS AsIO3.sys Driver Load

ATT&CK techniques

Priv Esc → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
- T1068Exploitation for Privilege Escalation
Defense Evasion
- T1211Exploitation for Stealth
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects loading of the ASUS AsIO3.sys kernel driver, a vulnerable driver abused in this bring-your-own-vulnerable-driver technique. The driver exposes IOCTLs that grant arbitrary kernel memory access, which the actor leverages for privilege escalation and to bypass process allowlisting, so its load outside a genuine ASUS software context is a strong exploitation indicator.

Reporting behind it

Related detections9 linkedT1068 — drag to rearrange

Suspicious Dell ControlVault DLL Load by Unexpected Process (ReVault)

Malicious Bring-Your-Own-Vulnerable-Driver Load By BlackByte

Windows Audit-CVE: User Applications Writing CveEventWrite Events (Event ID 1)

Malicious Payload Download From copy.fail Exploit Host on Linux (via process_creation)

Suspicious su Execution From Uncommon Parent Process on Linux (via process_creation)

Possible noPac sAMAccountName Spoofing via Machine Account Rename

Possible macOS TCC Bypass via mdimport Loading Custom Spotlight Importer

Suspicious CLFS Base Log File Created in SkyPDF ProgramData Path during Zero-Day Exploitation (via file_event)

Malicious Cisco SD-WAN Tenant List Upload Script Execution (via process_creation)

Suspicious Vulnerable ASUS AsIO3.sys Driver Load

Pivot detection · T1068 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

Full detection rule

Unlock this rule to view and copy it

The detection logic is included with a plan. Everything else — context, mappings and implementation details — stays free on this page.

Sign in for 3 free unlocks

Signing in gives you 3 unlocks to spend on any rule in the library. No card, and they do not expire.

Also included

Unlocked rules convert on this page — to Splunk SPL or Splunk — Raw Index SPL or Microsoft Sentinel KQL or Microsoft Sentinel ASIM ASIM KQL or Microsoft Defender XDR KQL or Elastic Security KQL or Elastic Security Lucene or Elastic Security ES|QL or CrowdStrike Falcon CQL or SentinelOne PowerQuery or Palo Alto Cortex XDR XQL or Carbon Black Cloud Platform Search or Carbon Black EDR Process Search or Google Security Operations UDM Search or IBM QRadar AQL or Sumo Logic Cloud SIEM Rules expression or Rapid7 InsightIDR LEQL or Graylog Search or OpenSearch Lucene or OpenSearch PPL PPL or Grafana Loki LogQL or SQLite SQL or Zircolite SQLite — with the log-source profile the engine picked, the field map it used, and everything it could not express. Converting a rule you have unlocked costs no further credit.

See it run on a free rule →Convert your own rule →