Intel is among the most popular microprocessor architectures introduced till to date. An extensively large number of applications have been developed on Intel ISA over the last more than three decades. However, Intel architectures also suffered intentionally or unintentionally from the cyber security related issues like Spectre, Meltdown and ZombieLoad. As compared to ARM & MIPS architectures, Intel is strictly proprietary; therefore it gives only minimal provision to implement safeguards against security threats at architectural level by its large scale users. In this work, we propose a heterogeneous microprocessor architecture named as ARMINTEL derived from our base concept of ARM inside Intel. Armintel uses an Intel front-end and an ARM back-end in its microarchitecture to make user able to run the applications developed for Intel in a secure execution environment of ARM. The contributions of this work are quad-fold starting from proposal on a heterogeneous microprocessor architecture, establishing its feasibility by driving Intel ISA mappings on ARM ISA, development of a complete simulation framework for functional evaluations of Armintel and last but not least is the performance estimation by adding cycle level measurements in the simulator. The results show that this new architecture can help replace security hazardous of Intel regime to a safer option of using open source ARM cores with front-end design to accept Intel binaries.