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Remcos RAT Infection Chain Hides Behind Obfuscated Scripts and Trusted Windows Binaries

Cybersecuritynews •Tushar Subhra Dutta • April 2, 2026

Cybercriminals are getting better at hiding their tracks, and a recently uncovered Remcos RAT campaign is proof of that. This attack does not rely on a single malicious file dropped onto a system. Instead, it uses a carefully built, multi-stage chain that starts with a simple phishing email and ends with a full, in-memory system […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Stealthy Remcos RAT Campaign Utilizes Obfuscated Scripts in Phishing Attack A new Remcos RAT campaign has been identified, employing obfuscated scripts and trusted Windows binaries to execute a largely fileless infection chain. The attack initiates through a phishing email containing a ZIP archive named 'MV MERKET COOPER SPECIFICATION.zip,' which mimics a legitimate business document to deceive users. This multi-stage attack does not rely on a single malicious file, making it more challenging for traditional defenses to detect. The infection runs almost entirely in memory, further complicating remediation efforts. Organizations utilizing Windows systems are particularly at risk due to the use of trusted binaries. The campaign highlights the evolving tactics of cybercriminals who are increasingly adept at evading detection. Current status indicates ongoing investigations into the scope and impact of the attack. No specific numbers or CVEs were mentioned in the articles. 2 sources 65

Extracted Entities

Remcos RAT Infection Chain Hides Behind Obfuscated Scripts and Trusted Windows Binaries

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Extracted Entities

Attack Types (2)

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Malware (1)

MITRE ATT&CK (1)

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