c2 framework
OpenStrike
An open-source Cobalt Strike reimplementation, staged alongside cracked Cobalt Strike builds. Named by 2 reports, 6 detection rules, 0 IOC feeds and 1 tracked actor.
Reports
Detection rules
YARA rules whose family metadata names this family, by detection page.
Detection rules
OpenStrike Expanded Toolkit — 106 New Files (2026-04-08)
TOOLKIT_OpenStrike_Gen4_Beacon, TOOLKIT_OpenStrike_Proto_Beacons, TOOLKIT_OpenStrike_DllLoader
Detection rules
OpenStrike Beacon Toolkit (172.105.0.126)
RAT_OpenStrike_C_Beacon, TOOLKIT_OpenStrike_Loader_Chain, TOOLKIT_OpenStrike_Python_Beacon
Tracked actors
Designations whose profile lists this family as tooling.
- UTA-2026-004: Developer of the OpenStrike multi-implant C2 toolkit, with a cracked Cobalt Strike arsenal
A family name here is the label the linked rule, feed or profile carries, normalised to one spelling by _data/families.yml. Where a report declines to name a family, this page does not either.