Social Engineering and Malware Campaigns Using Diverse Lures and Delivery Chains
Multiple reports describe distinct malware and intrusion campaigns active across enterprise, government, developer, and consumer targets, rather than a single shared incident. The activity includes vishing-led abuse of Quick Assist for remote access and persistence, a .NET AOT malware chain delivering Rhadamanthys and XMRig, renewed Horabot banking Trojan activity using fake CAPTCHA and mshta, a compromised Open VSX extension that fetched BlokTrooper payloads, and a Middle East-focused Ramadan coupon lure delivering a RAT with AWS S3-based exfiltration. Additional reporting covers Operation CamelClone, which used government-themed spear-phishing and LNK files to steal data with Rclone, and Contagious Trader, a cryptocurrency-focused campaign tied to malicious GitHub and npm projects.
One reference stands apart as vulnerability research rather than campaign reporting: watchTowr detailed pre-authenticated RCE chains in BMC FootPrints, which is a separate product security disclosure and not part of the malware operations described elsewhere. Because the references cover unrelated incidents, malware families, and victim sets, the material should not be treated as one cohesive event. It is also not fluff, as the sources contain substantive threat intelligence, technical analysis, exploit research, and incident tradecraft rather than marketing or generic advice.

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How this story unfolded
12 events from the most recent confirmed update back to the earliest known activity.
Horabot resurgence in Mexico reported publicly
A follow-on report highlighted Horabot's re-emergence in Mexico, summarizing the multi-stage phishing chain, email worm behavior, and the scale of infections previously uncovered by researchers. The report reinforced that the campaign had been active since May 2025 and heavily targeted Mexican users.
Blackpoint details Quick Assist vishing intrusion tied to Tsundere Netto
Blackpoint Security described an intrusion in which a threat actor impersonated IT support over voice calls and convinced a user to grant access through Microsoft Quick Assist. After access, the operator staged payloads, used Node.js and Deno for modular follow-on malware, and activity was linked with high confidence to the Tsundere Netto botnet.
Aikido reports compromised fast-draft Open VSX releases
Aikido disclosed that multiple fast-draft extension versions published to Open VSX were malicious, while other versions appeared clean, suggesting a compromised publisher account or stolen publishing token. The second-stage payload deployed the BlokTrooper framework, including a Socket.IO RAT, browser and wallet theft, document exfiltration, and clipboard monitoring across Windows, macOS, and Linux.
Securelist publishes technical analysis and detections for Horabot
Securelist documented the active Horabot campaign's fake CAPTCHA lure, mshta-based execution chain, Delphi banking trojan payload, and PowerShell email spreader. The report also released YARA rules, a Suricata signature, hunting guidance, and indicators of compromise for detection.
CloudSEK uncovers Ramadan coupon malware campaign in the Middle East
CloudSEK reported a socially engineered campaign using fake Ramadan discount offers and a malicious document impersonating AlCoupon to target Windows users in the Middle East. The infection chain used a hidden VBA macro and C# loader to deploy the Ftu4You RAT, with exfiltration routed through AWS S3 presigned URLs.
Researchers report .NET AOT malware delivering Rhadamanthys and XMRig
Howler Cell identified a multi-stage malware campaign using .NET Ahead-of-Time compilation to hinder analysis and evade detection. The chain used a ZIP-delivered loader to fetch additional payloads, including the Rhadamanthys infostealer and an XMRig miner, while a host-scoring system screened out sandbox environments.
Contagious Trader campaign weaponizes crypto bot repos and npm packages
A large campaign dubbed Contagious Trader used malicious GitHub cryptocurrency trading bot repositories and 37 npm packages to steal private keys, sensitive files, and establish persistence, including SSH backdoors on some Linux systems. The activity was attributed with high confidence to North Korean operators based on overlaps with Lazarus-linked tradecraft and infrastructure patterns.
CamelClone espionage campaign targets government and diplomatic entities
Operation CamelClone targeted government, defense, and diplomatic organizations in Algeria, Mongolia, Ukraine, and Kuwait with spear-phishing ZIP archives disguised as official correspondence. The infection chain used LNK files, hidden PowerShell, the HOPPINGANT JavaScript loader, and Rclone to steal documents and Telegram Desktop session data via public file-sharing sites and MEGA.
BlokTrooper issue disclosed to fast-draft maintainer
Researchers disclosed the malicious fast-draft Open VSX extension activity to the maintainer via GitHub issue #565. The issue was opened on March 12, 2026 and remained unanswered at the time of reporting.
CamelClone operators create MEGA accounts for exfiltration
Researchers identified four MEGA accounts linked to Operation CamelClone that were created in February and March 2026. The accounts were used as part of the campaign's cloud-based exfiltration and staging infrastructure.
Huntress links fake tech support intrusions to customized Havoc implants
Huntress documented a February 2026 intrusion cluster affecting five partner organizations in which attackers used spam emails and fake IT support calls to obtain QuickAssist or RMM access, harvest credentials through a fake Outlook Antispam Control Panel, and deploy customized Havoc Demon payloads via DLL sideloading. The operators moved to nine additional endpoints within about eleven hours and used modified Havoc features, including registry-based fallback C2 recovery, while tradecraft overlapped with Black Basta and FIN7-style activity.
Horabot campaign begins infecting victims, mostly in Mexico
An exposed Horabot victim panel showed infections dating back to May 2025, with 5,384 victims recorded and about 93% located in Mexico. The campaign used Spanish-language lures while infrastructure and code artifacts suggested Brazilian operator ties.
Related entities
Vulnerabilities, threat actors, malware, products, organizations, and breaches Mallory has linked to this story.
Sources
9 references tracked. Mallory keeps watching after this page renders.
Horabot Banking Trojan Resurfaces in Mexico With Multi-Stage Phishing and Email Worm Tactics
cybersecuritynews.com
Open sourceA Match Made in Malware: Quick Assist - Blackpoint
blackpointcyber.com
Open sourceNew .NET AOT Malware Hides Code as a Black Box to Evade Detection
hackread.com
Open sourceOpportunistic threat actors using Ramadan coupon as a lure to target retail store customers in Middle East | CloudSEK
cloudsek.com
Open sourceHow we uncovered a Horabot campaign and how you can detect this malware | Securelist
securelist.com
Open sourcefast-draft Open VSX Extension Compromised by BlokTrooper (RAT & Infostealer)
aikido.dev
Open sourceCamelClone Spy Campaign Abuses Public File-Sharing Sites and Rclone in Government-Focused Attacks
cybersecuritynews.com
Open sourceContagious Trader campaign - Coordinated weaponisation of cryptocurrency trading bots by suspected DPRK malware operators | kmsec.uk
kmsec.uk
Open sourceFake Tech Support Delivers Havoc Command & Control | Huntress
huntress.com
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