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Posted by Nadav Lorber on May 7, 2021

Introduction

Morphisec has recently monitored a highly sophisticated Crypter-as-a-Service that delivers numerous RAT families onto target machines.

The Crypter is most commonly delivered through phishing emails, which lead to the download of a visual basic file. In some cases, however, the attack chain starts with a large install file, such as an Adobe installer, which bundles the next stage. 

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Posted by Nadav Lorber on March 16, 2021

Introduction

During 2021 Morphisec identified an increased usage of the “HCrypt” crypter. In this post, we will lockpick “HCrypt” – a crypter as a service that is marketed as a FUD (fully undetectable) loader for the client`s RAT of choice. We chose to dissect the crypter’s operations along with tracking several actors that utilize it.

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