{"id":763,"date":"2013-02-27T20:42:14","date_gmt":"2013-02-28T04:42:14","guid":{"rendered":"http:\/\/e-olio.com\/cknow\/cms\/?p=763"},"modified":"2013-05-07T22:20:40","modified_gmt":"2013-05-08T05:20:40","slug":"laroux","status":"publish","type":"post","link":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html","title":{"rendered":"Laroux"},"content":{"rendered":"<p><div class=\"simplePullQuote right\"><p><strong>Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about.<\/strong><\/p>\n<\/div>Sneaking up on the world in July 1996 while everyone was so worried about Word macro viruses, Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about.<\/p>\n<p>Laroux is a fairly simple macro virus. The original contains two macros: AUTO_OPEN and CHECK_FILES. The first tells Excel to run the second as soon as a worksheet is opened. CHECK_FILES will look in the Excel startup path (usually the XLSTART directory) for a file called PERSONAL.XLS. If not found one is created; if found the module LAROUX is created in it. Since PERSONAL.XLS is automatically opened whenever Excel is run (much like NORMAL.DOT under Word) the virus will be loaded every time Excel is started and all accessed worksheets infected.<\/p>\n<p>Laroux is written in Visual Basic for Applications (VBA), a macro language based on the Visual Basic programming language. Laroux is not intentionally destructive; it just replicates. Variants, however, frequently appear and there is no guarantee they will be benign.<\/p>\n<p>Laroux, in its many variants, was fairly widespread in its day.<\/p>\n<table style=\"margin: 0pt; width: 100%;\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr align=\"center\">\n<td style=\"padding: 0 0 0 0;\" colspan=\"2\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png\" alt=\"Up Arrow\" width=\"16\" height=\"16\" class=\"alignnone size-full wp-image-579\" \/> <a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/some-virus-threat-details.html\">Some Virus Threat Details<\/a> <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png\" alt=\"Up Arrow\" width=\"16\" height=\"16\" class=\"alignnone size-full wp-image-579\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 0 0 0 0;\" align=\"right\"><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/kakworm.html\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_prior.gif\" alt=\"Prior Page\" width=\"48\" height=\"32\" class=\"alignnone size-full wp-image-578\" \/><\/a><\/td>\n<td style=\"padding: 0 0 0 0;\" align=\"left\"><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/love-letter.html\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_next.gif\" alt=\"Next Page\" width=\"48\" height=\"32\" class=\"alignnone size-full wp-image-577\" \/><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"padding-right: 20px; text-align: right; width: 50%;\"><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/kakworm.html\">Kakworm<\/a> <\/td>\n<td style=\"padding-left: 20px; width: 50%; text-align: left;\"> <a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/love-letter.html\">Love Letter<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Sneaking up on the world in July 1996 while everyone was so worried about Word macro viruses, Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about. Laroux is a fairly simple macro virus. The original contains two macros: AUTO_OPEN and CHECK_FILES. The first tells Excel to [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-763","post","type-post","status-publish","format-standard","hentry","category-vtutor","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Laroux - C-Know Media<\/title>\n<meta name=\"description\" content=\"Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Laroux - C-Know Media\" \/>\n<meta property=\"og:description\" content=\"Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html\" \/>\n<meta property=\"og:site_name\" content=\"C-Know Media\" \/>\n<meta property=\"article:published_time\" content=\"2013-02-28T04:42:14+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2013-05-08T05:20:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png\" \/>\n<meta name=\"author\" content=\"DaBoss\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"DaBoss\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html\"},\"author\":{\"name\":\"DaBoss\",\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/#\\\/schema\\\/person\\\/47944007814fe46e32a1ebee5954638f\"},\"headline\":\"Laroux\",\"datePublished\":\"2013-02-28T04:42:14+00:00\",\"dateModified\":\"2013-05-08T05:20:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html\"},\"wordCount\":210,\"image\":{\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/wp-content\\\/uploads\\\/2013\\\/02\\\/arrow_up.png\",\"articleSection\":[\"VTutor\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html\",\"url\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html\",\"name\":\"Laroux - C-Know Media\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/wp-content\\\/uploads\\\/2013\\\/02\\\/arrow_up.png\",\"datePublished\":\"2013-02-28T04:42:14+00:00\",\"dateModified\":\"2013-05-08T05:20:40+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/#\\\/schema\\\/person\\\/47944007814fe46e32a1ebee5954638f\"},\"description\":\"Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html#primaryimage\",\"url\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/wp-content\\\/uploads\\\/2013\\\/02\\\/arrow_up.png\",\"contentUrl\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/wp-content\\\/uploads\\\/2013\\\/02\\\/arrow_up.png\",\"width\":16,\"height\":16,\"caption\":\"Up Arrow\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/vtutor\\\/laroux.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Laroux\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/#website\",\"url\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/\",\"name\":\"C-Know Media\",\"description\":\"Fun media for all\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/#\\\/schema\\\/person\\\/47944007814fe46e32a1ebee5954638f\",\"name\":\"DaBoss\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d4ba3f829b22682345f1dec9f43e839d822e1b4c570d7ce15475db8b4d5ce111?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d4ba3f829b22682345f1dec9f43e839d822e1b4c570d7ce15475db8b4d5ce111?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d4ba3f829b22682345f1dec9f43e839d822e1b4c570d7ce15475db8b4d5ce111?s=96&d=mm&r=g\",\"caption\":\"DaBoss\"},\"url\":\"https:\\\/\\\/www.cknow.com\\\/cms\\\/author\\\/daboss-2\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Laroux - C-Know Media","description":"Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html","og_locale":"en_US","og_type":"article","og_title":"Laroux - C-Know Media","og_description":"Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about.","og_url":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html","og_site_name":"C-Know Media","article_published_time":"2013-02-28T04:42:14+00:00","article_modified_time":"2013-05-08T05:20:40+00:00","og_image":[{"url":"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png","type":"","width":"","height":""}],"author":"DaBoss","twitter_misc":{"Written by":"DaBoss","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html#article","isPartOf":{"@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html"},"author":{"name":"DaBoss","@id":"https:\/\/www.cknow.com\/cms\/#\/schema\/person\/47944007814fe46e32a1ebee5954638f"},"headline":"Laroux","datePublished":"2013-02-28T04:42:14+00:00","dateModified":"2013-05-08T05:20:40+00:00","mainEntityOfPage":{"@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html"},"wordCount":210,"image":{"@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html#primaryimage"},"thumbnailUrl":"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png","articleSection":["VTutor"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html","url":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html","name":"Laroux - C-Know Media","isPartOf":{"@id":"https:\/\/www.cknow.com\/cms\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html#primaryimage"},"image":{"@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html#primaryimage"},"thumbnailUrl":"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png","datePublished":"2013-02-28T04:42:14+00:00","dateModified":"2013-05-08T05:20:40+00:00","author":{"@id":"https:\/\/www.cknow.com\/cms\/#\/schema\/person\/47944007814fe46e32a1ebee5954638f"},"description":"Laroux became the first Microsoft Excel macro virus and opened up yet another data file to worry about.","breadcrumb":{"@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html#primaryimage","url":"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png","contentUrl":"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png","width":16,"height":16,"caption":"Up Arrow"},{"@type":"BreadcrumbList","@id":"https:\/\/www.cknow.com\/cms\/vtutor\/laroux.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.cknow.com\/cms\/"},{"@type":"ListItem","position":2,"name":"Laroux"}]},{"@type":"WebSite","@id":"https:\/\/www.cknow.com\/cms\/#website","url":"https:\/\/www.cknow.com\/cms\/","name":"C-Know Media","description":"Fun media for all","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.cknow.com\/cms\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.cknow.com\/cms\/#\/schema\/person\/47944007814fe46e32a1ebee5954638f","name":"DaBoss","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/d4ba3f829b22682345f1dec9f43e839d822e1b4c570d7ce15475db8b4d5ce111?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/d4ba3f829b22682345f1dec9f43e839d822e1b4c570d7ce15475db8b4d5ce111?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d4ba3f829b22682345f1dec9f43e839d822e1b4c570d7ce15475db8b4d5ce111?s=96&d=mm&r=g","caption":"DaBoss"},"url":"https:\/\/www.cknow.com\/cms\/author\/daboss-2"}]}},"_links":{"self":[{"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/posts\/763","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/comments?post=763"}],"version-history":[{"count":0,"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/posts\/763\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/media?parent=763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/categories?post=763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cknow.com\/cms\/wp-json\/wp\/v2\/tags?post=763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}