#web shell
Stealth Linux Rootkit Hides Fileless Web Shells Inside F5 BIG-IP Memory
Researchers have uncovered a Linux rootkit that alters PHP code only in memory on compromised F5 BIG-IP APM appliances. Its fileless web shell, local socket backdoor and upgrade...
China-Linked OP-512 Uses Cryptographically Unique Web Shells in Patient IIS Server Espionage Campaign
ReliaQuest has uncovered OP-512, a new China-linked threat cluster targeting IIS servers with a custom web shell framework that generates cryptographically unique signatures per deployment, evading traditional detection....