Sigma rule: Triple Cross eBPF Rootkit Default LockFile

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-d6e180724cb0, updated 2022-12-31T00:00:00.000Z.

Rule

Title
Triple Cross eBPF Rootkit Default LockFile
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2022-07-05
Modified
2022-12-31
File
rules/linux/file_event/file_event_lnx_triple_cross_rootkit_lock_file.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the creation of the file "rootlog" which is used by the TripleCross rootkit as a way to check if the backdoor is already running.

Log source

product
linux
category
file_event

Detection

selection:
    TargetFilename: '/tmp/rootlog'
condition: selection

False positives (as the rule lists them)

  • Unlikely

Tags

  • attack.stealth

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/file_event/file_event_lnx_triple_cross_rootkit_lock_file.yml

Sources and licences

  • SigmaHQ

    "Triple Cross eBPF Rootkit Default LockFile" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/file_event/file_event_lnx_triple_cross_rootkit_lock_file.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Triple Cross eBPF Rootkit Default LockFile",
entity page, dataset version ref-d6e180724cb0, updated 2022-12-31T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/c0239255-822c-4630-b7f1-35362bcb8f44 (accessed 2026-11-03).
Underlying source: SigmaHQ rule c0239255-822c-4630-b7f1-35362bcb8f44, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.