MALWARE FAMILY

SectopRAT

Internal ID: win.sectop_rat

aliases

Last seen:Mar 17, 2026

Intelligence Profile

SectopRAT, aka ArechClient2, is a .NET RAT with numerous capabilities including multiple stealth functions. Arechclient2 can profile victim systems, steal information such as browser and crypto-wallet data, and launch a hidden secondary desktop to control browser sessions. Additionally, it has several anti-VM and anti-emulator capabilities.

Threat Analysis

SectopRAT is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.

External References

→https://blog.sekoia.io/exposing-fakebat-loader-distribution-methods-and-adversary-infrastructure/

→https://cdn-production.blackpointcyber.com/wp-content/uploads/2022/11/01161208/Blackpoint-Cyber-Ratting-out-Arechclient2-Whitepaper.pdf

→https://cyberflorida.org/2022/11/arechclient2/

→https://dr4k0nia.github.io/posts/Analysing-a-sample-of-ArechClient2/

→https://medium.com/@gi7w0rm/a-long-way-to-sectoprat-eb2f0aad6ec8

→https://medium.com/@joshuapenny88/hostinghunter-series-chang-way-technologies-co-limited-a9ba4fce0f65

→https://medium.com/@sarviyamalwareanalyst/sectoprat-a-dangerous-remote-access-trojan-spreading-through-google-fake-ads-0c43a15c1cd8

→https://medium.com/walmartglobaltech/arechclient-decoding-iocs-and-finding-the-onboard-browser-extension-477f8796568d

→https://tampabay.tech/2022/11/30/arechclient2/

→https://vxhive.blogspot.com/2021/01/deep-dive-into-sectoprat.html

Quick Facts

TypeMalware Family

Aliases1

Also Known As

win.sectop_rat

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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