Suspicious Bootkitty Rootkit Component Drop under opt via File System

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1574.006Dynamic Linker Hijacking
Persistence
- T1542.003Bootkit
- T1574.006Dynamic Linker Hijacking
Priv Esc
- T1574.006Dynamic Linker Hijacking
Defense Evasion
- T1542.003Bootkit
- T1574.006Dynamic Linker Hijacking
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects creation of the Bootkitty user-space and kernel components /opt/injector.so, /opt/observer, and /opt/rootkit_loader.ko. These fixed paths are dropped by the first known UEFI bootkit for Linux to load a kernel module and inject a shared object through the boot process. Their presence indicates a UEFI bootkit compromise.

Reporting behind it

Related detections9 linkedT1574.006 — drag to rearrange

Malicious ld.so.preload Hijack Loading libcext by Auto-Color (via process_creation)

Malicious Glupteba UEFI Bootkit EfiGuard Driver Drop to ESP (via file_event)

Malicious ld.so.preload Persistence Modification on Ivanti Connect Secure (via file_event)

Malicious Secure Boot Bypass Files Dropped to EFI Partition

Malicious Windows Boot Manager Backup Created by UEFI Bootkit

Suspicious Renamed GRUB Bootloader grubx64-real Creation via File System

Suspicious Dynamic Linker Hijacking via ld.so.preload Modification

Malicious Koske Userland Rootkit Installation via ld.so.preload (via file_event)

Malicious TeamTNT prochider Rootkit Deployment as Shared Object (via file_event)

Suspicious Bootkitty Rootkit Component Drop under opt via File System

Pivot detection · T1574.006 · 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 →