If you are scanning a system with BitLocker enabled, TDSSKiller may struggle to read the raw disk structures required to detect rootkits if the drive is locked during a pre-boot environment scan.
To understand TDSSKiller, you must understand its namesake. refers to the TDL family of rootkits (also known as Alureon or Tidserv ). kaspersky tdsskiller portable
It looks specifically for known threats like TDL2, TDL3, TDL4, Sinowal, and Cidox. System Integrity: If you are scanning a system with BitLocker