CRITICAL

Stuxnet Sabotage

Stuxnet utilized stolen private keys from Realtek and JMicron to digitally sign its kernel drivers. This allowed the malware to silently bypass Windows Driver Signature Enforcement.

Windows Kernel Mode Code Signing

Windows x64 strictly requires all kernel-mode drivers (`.sys`) to be digitally signed by a trusted Certificate Authority. Stuxnet bypassed this by stealing private keys from legitimate hardware manufacturers.

mrxnet.sys

Signer: Realtek Semiconductor Corp.
Status: Pending

mrxcls.sys

Signer: JMicron Technology Corp.
Status: Pending

ATTACKER TERMINAL // KERNEL ACCESS LOG

Phase 1 of 3

Authenticode Verification