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Dissecting REMCOS RAT: An in-depth analysis of a widespread 2024 malware, Part One

ID: d2cc3659-b6d7-5965-a22c-caa0c07e8ea1

STIX ID: report--d2cc3659-b6d7-5965-a22c-caa0c07e8ea1

Feed Name: Elastic Security Labs

Threat Score
75/100

Date Published: 2024-04-24

Date Updated: 2026-04-27

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This report is a technical analysis of REMCOS v4.9.3 Pro, detailing how the malware loads and decrypts its embedded configuration, performs UAC bypass and optional UAC disabling, installs and persists on a host (with optional folder/binary hiding), injects into target processes via ZwMapViewOfSection/SetThreadContext/ResumeThread, and optionally cleans browser cookies/login files; it highlights configuration flags, logging modes, and detection notes useful for defenders.

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