{"id":228975,"date":"2026-01-14T01:23:55","date_gmt":"2026-01-14T07:23:55","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/01\/new-malware-campaign-delivers-remcos-rat-through-multi-stage-windows-attack"},"modified":"2026-01-14T01:23:55","modified_gmt":"2026-01-14T07:23:55","slug":"new-malware-campaign-delivers-remcos-rat-through-multi-stage-windows-attack","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/01\/new-malware-campaign-delivers-remcos-rat-through-multi-stage-windows-attack","title":{"rendered":"New Malware Campaign Delivers Remcos RAT Through Multi-Stage Windows Attack"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/new-malware-campaign-delivers-remcos-rat-through-multi-stage-windows-attack.jpg\"><\/a><\/p>\n<p>Cybersecurity researchers have disclosed details of a new campaign dubbed <strong>SHADOW#REACTOR<\/strong> that employs an evasive multi-stage attack chain to deliver a commercially available remote administration tool called <a href=\"https:\/\/thehackernews.com\/2025\/05\/fileless-remcos-rat-delivered-via-lnk.html\" rel=\"noopener\" target=\"_blank\">Remcos RAT<\/a> and establish persistent, covert remote access.<\/p>\n<p>\u201cThe infection chain follows a tightly orchestrated execution path: an obfuscated VBS launcher executed via wscript.exe invokes a PowerShell downloader, which retrieves fragmented, text-based payloads from a remote host,\u201d Securonix researchers Akshay Gaikwad, Shikha Sangwan, and Aaron Beardslee <a href=\"https:\/\/www.securonix.com\/blog\/shadowreactor-text-only-staging-net-reactor-and-in-memory-remcos-rat-deployment\/\" rel=\"noopener\" target=\"_blank\">said<\/a> in a technical report shared with The Hacker News.<\/p>\n<p>\u201cThese fragments are reconstructed into encoded loaders, decoded in memory by a. NET Reactor\u2013protected assembly, and used to fetch and apply a remote Remcos configuration. The final stage leverages MSBuild.exe as a living-off-the-land binary (LOLBin) to complete execution, after which the Remcos RAT backdoor is fully deployed and takes control of the compromised system.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cybersecurity researchers have disclosed details of a new campaign dubbed SHADOW#REACTOR that employs an evasive multi-stage attack chain to deliver a commercially available remote administration tool called Remcos RAT and establish persistent, covert remote access. \u201cThe infection chain follows a tightly orchestrated execution path: an obfuscated VBS launcher executed via wscript.exe invokes a PowerShell downloader, [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-228975","post","type-post","status-publish","format-standard","hentry","category-cybercrime-malcode"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/228975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=228975"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/228975\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=228975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=228975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=228975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}