{"id":7329,"date":"2023-11-08T08:46:01","date_gmt":"2023-11-08T14:46:01","guid":{"rendered":"https:\/\/blog.zoha-islands.com\/?p=7329"},"modified":"2023-11-08T08:46:01","modified_gmt":"2023-11-08T14:46:01","slug":"dissecting-the-free-l-viewer-scam-chaser-zaks","status":"publish","type":"post","link":"https:\/\/zoha-islands.com\/blog\/dissecting-the-free-l-viewer-scam-chaser-zaks\/","title":{"rendered":"Dissecting the \u201cfree L$\u201d viewer scam \u2013 Chaser Zaks"},"content":{"rendered":"<div id=\"primary\" class=\"content-area\"><main id=\"main\" class=\"site-main\" role=\"main\">\n<article id=\"post-135686\" class=\"post-135686 post type-post status-publish format-standard hentry category-second-life tag-scams tag-viewer\"><header class=\"entry-header\">\n<div class=\"entry-meta\"><span class=\"posted-on\">Posted <\/span><span class=\"byline\"><span class=\"byline-prefix\">by<\/span> <span class=\"author vcard\"><a class=\"url fn n\" href=\"https:\/\/modemworld.me\/author\/peysworld\/\" target=\"_blank\" rel=\"noopener\">Inara Pey<\/a><\/span><\/span><\/div>\n<\/header>\n<div class=\"entry-content\">\n<p data-adtags-visited=\"true\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone\" src=\"https:\/\/www.searchenginejournal.com\/wp-content\/uploads\/2017\/10\/black-hat-seo.png\" alt=\"\" width=\"1600\" height=\"840\" \/><\/p>\n<p data-adtags-visited=\"true\">The last several days have seen the circulation of news regarding what is patiently a scam viewer. The item in question is being \u201cpromoted\u201d by means of an IM circulating to users promising all sorts of goodies and advantages: free Linden Dollars! Freedom to build where you please! And so on.<\/p>\n<p data-adtags-visited=\"true\">Most established users are a little too wily to fall for such promises \u2013 and the IM has apparently given rise to a number of Abuse Reports being filed, with additional warnings going out via social media. However, those not so familiar with such schemes might be tempted by promises of free L$ and so on, and others might be tempted to \u201cjust give it a quick try\u201d to \u201csee what it is all about\u201d \u2013 neither of which would be especially wise, as the \u201cviewer\u201d in question does far more than might initially be suspected.<\/p>\n<p data-adtags-visited=\"true\">To discover the threats posed by the \u201cviewer\u201d in question, programmer and Firestorm Bug Hunter (and also animator and modeller) Chaser Zaks risked taking a look under the covers of the code that is supplied, and published his findings on <a href=\"https:\/\/gist.github.com\/FelixWolf\/ddea8e96b8195181098d8d4e7c4273c4\" target=\"_blank\" rel=\"noopener\">Github Gists<\/a>. So as to (hopefully) help spread the word more generally, I asked Chaser if I could repro his notes here, to which he agreed.<\/p>\n<p data-adtags-visited=\"true\">In his document, Chaser neatly encompasses the high-level claims of the \u201cviewer\u201d before dismantling them, before going on to describe the threats posed by installing it. For ease of reference, I\u2019ll summarise the realities behind the claims made by the \u201cviewer\u201d in my own words in the table below, and then turn to Chaser\u2019s notes directly on the threats posed by the \u201cviewer\u201d, if installed on a computer.<\/p>\n<table>\n<tbody>\n<tr>\n<td><strong>Claim<\/strong><\/td>\n<td><strong>Reality<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Unlock unlimited Linden Dollars (L$)<\/td>\n<td>This isn\u2019t possible. Linden Dollars are created and controlled by Linden Lab through the LindeX mechanism, which is <strong>not<\/strong> a part of the viewer. Therefore, any claim of being able to access \/ generate unlimited Linden Dollars outside of this mechanism constitutes the crime of fraud and is a violation of both the Terms of Service <em>and<\/em> (among others) US federal law. Further:\n<p>&nbsp;<\/p>\n<ul>\n<li>Linden Lab has the capability to immediately identify and track fraudulent transactions \u2013 and to take action (up to and including) banning accounts engaging in such transactions, as well as reporting such activities to the relevant authorities.<\/li>\n<li>The Lab can also identify and block malicious viewers (and similarly take action against accounts using such viewers).<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td>Fly to Unlimited heights<\/td>\n<td>This is already possible; Linden Lab removed the limit on flying to any altitude a fair while ago, and most third-party viewers allow users to fly as high as they like (<em>Building<\/em>, however does remain constrained to below 4096 metres \u2013 but\u2019s that\u2019s a different matter).<\/td>\n<\/tr>\n<tr>\n<td>Build on any land<\/td>\n<td>Not possible; land permissions are checked by the simulator, not the viewer, the the permissions set by a land holder as to what can \/ cannot be done on their land cannot be overridden.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-adtags-visited=\"true\">For the rest, I\u2019ll refer directly to Chaser\u2019s notes.<\/p>\n<h3 id=\"user-content-so-what-does-it-actually-do\" dir=\"auto\">So What Does It Actually Do?<\/h3>\n<p data-adtags-visited=\"true\">A lot of stuff you don\u2019t want happening. I\u2019ll break it down into steps:<\/p>\n<ol>\n<li>You are instructed to download\u00a0<code>viewer.exe<\/code>, upon execution it will pretend to install a viewer so that it looks legitimate.<\/li>\n<li>Upon running the newly installed program, it will run\u00a0<code>builddata.bat.<\/code><\/li>\n<\/ol>\n<p data-adtags-visited=\"true\">This script elevates the permission to administrator permissions <strong>on your computer<\/strong>! This is incredibly dangerous as it allows whatever is running to do what it wants. In specific, this script will download and execute the files called \u201cV1\u201d, \u201cQ\u201d, and \u201cA\u201d.<\/p>\n<ul dir=\"auto\">\n<li>\u201cV1\u201d, will install files \u201c1\u201d and \u201c2\u201d.\n<ul dir=\"auto\">\n<li>\u201c1\u201d is <a href=\"https:\/\/www.malwarebytes.com\/blog\/detections\/trojan-cobaltstrike\" target=\"_blank\" rel=\"nofollow noopener\">Trojan.CobaltStrike<\/a>, which is a penetration testing toolkit which cybercriminals often abuse in order to do remote administrative access.<\/li>\n<li>\u201c2\u201d will install Trojan.Molotov\/Reflo. While I am not 100% sure about what it does, it is very likely another remote administration toolkit.<\/li>\n<\/ul>\n<\/li>\n<li>\u201cQ\u201d will install\u00a0Quasar, which is also a remote administration toolkit.<\/li>\n<li>\u201cA\u201d will install\u00a0AsyncRAT\u00a0which is also a remote administrative toolkit.<\/li>\n<li>Some of these toolkits will automatically install additional stuff not included in the script, such as a cryptominer.<\/li>\n<li>The script will execute\u00a0<code>start.vbs<\/code> \u2013 which shows a fake dialog saying that there was an error.<\/li>\n<\/ul>\n<h3 id=\"user-content-why-so-many-remote-administrative-toolkits\" dir=\"auto\">Why So Many Remote Administrative Toolkits?<\/h3>\n<p dir=\"auto\" data-adtags-visited=\"true\">Attackers will intentionally install as many backdoors as possible so that it becomes increasingly difficult to remove to the point where you should probably just wipe your hard drive and re-install your operating system.<\/p>\n<h3 id=\"user-content-what-does-a-remote-administrative-toolkit-do\" dir=\"auto\">What Does a Remote Administrative Toolkit Do?<\/h3>\n<p dir=\"auto\" data-adtags-visited=\"true\">A remote administrative toolkit(also known as a RAT), is basically like giving someone physical access to your computer. They can, but are not limited to, do the following:<\/p>\n<ul dir=\"auto\">\n<li>Steal your username \/ passwords<\/li>\n<li>Steal your browser cookies<\/li>\n<li>Steal your files<\/li>\n<li>Steal your banking information<\/li>\n<li>Steal your L$<\/li>\n<li>Steal your REAL WORLD money (through credit \/ banking \/ wire fraud)<\/li>\n<li>View your webcam and take pictures\/videos<\/li>\n<li>View your desktop<\/li>\n<li>Install additional software<\/li>\n<li>Encrypt your files<\/li>\n<li>Delete your files<\/li>\n<\/ul>\n<h3 id=\"user-content-what-does-a-cryptominer-do\" dir=\"auto\">What Does a Cryptominer Do?<\/h3>\n<p dir=\"auto\" data-adtags-visited=\"true\">A cryptominer abuses your GPU to mine cryptocurrency such as bitcoin. This wastes electricity, computing power, and also degrades your graphics card. And you do not see a dime of what they make. It\u2019s basically turning your computer into a mining slave.<\/p>\n<h3 id=\"user-content-is-that-it-does-it-install-anything-else\" dir=\"auto\">Does it Install Anything Else?<\/h3>\n<p dir=\"auto\" data-adtags-visited=\"true\">Yes and no:<\/p>\n<ul dir=\"auto\">\n<li>No: The script it\u2019s self doesn\u2019t install anything else<\/li>\n<li>Yes: However, when each of the remote administrative toolkits are installed, it pings as server, which that server can tell the toolkit to install even more stuff.<\/li>\n<li>\n<p dir=\"auto\" data-adtags-visited=\"true\">While I could do further investigation, it involves going further than I feel reasonably safe doing so.<\/p>\n<h3 id=\"user-content-help-i-installed-it-what-do-i-do\" dir=\"auto\">Help! I installed it! What do I do?<\/h3>\n<ol dir=\"auto\">\n<li>Turn the computer that you installed it on\u00a0<strong>OFF<\/strong>\u00a0immediately! If the computer is off, they can\u2019t access it. Make sure you do not put it in a \u201csleep\u201d state where the CPU is still operating in a lower power mode, make sure it is OFF off!<\/li>\n<li>Take your device to a computer technician who is specialized in removing viruses and malware. Be prepared to have to have your files backed up and system re-installed.<\/li>\n<li>Do not be tempted to use it until it is cleaned! Malware can spread over internal networks, and every moment it is on is a chance that the hacker will be able to steal any or more data from you!<\/li>\n<\/ol>\n<p data-adtags-visited=\"true\">\u00a0<\/p>\n<h3>Closing Notes (from Inara)<\/h3>\n<p data-adtags-visited=\"true\">\u201cViewers\u201d like his are not a new phenomena, although not all of them are as blatantly suspicious in terms of up-front claims as this particular example. Some are extremely subtle, seeking to trick users into downloading them (such as by spoofing the genuine download address in a manner which makes it look like you\u2019re going to the official website when you are not).\u00a0To this end, when it comes to installing viewers:<\/p>\n<ul>\n<li>Stick to recognised viewers such as the <a href=\"https:\/\/secondlife.com\/support\/downloads\/\" target=\"_blank\" rel=\"noopener\">official Second Life viewer<\/a> or those <a href=\"https:\/\/wiki.secondlife.com\/wiki\/Third_Party_Viewer_Directory\" target=\"_blank\" rel=\"noopener\">listed on the Lab\u2019s Third Party Viewer Directory<\/a>.\n<ul>\n<li>While the latter are self-certified and <em>not<\/em> validated directly by the Lab, the fact that they have registered for inclusion on the Directory generally means they are regularly updated, ensuring stability, security, and compatibility with the platform.<\/li>\n<\/ul>\n<\/li>\n<li>Only download such viewers directly from their \u201cofficial\u201d websites. Do not use links supplied via random IMs or notecards, and carefully check the links provided by other website and blogs (even this blog!) to ensure they are pointing to a valid download page for a viewer.<\/li>\n<li>If you are on X (or as most of us \u2013 and quite frequently, the platform itself \u2013 still prefer, \u201cTwitter\u201d), then follow <a href=\"https:\/\/twitter.com\/soft\" target=\"_blank\" rel=\"noopener\">Soft Linden<\/a> for news and information on dealing with malware in general.<\/li>\n<li>Keep an eye on the <a href=\"https:\/\/community.secondlife.com\/forums\/\" target=\"_blank\" rel=\"noopener\">Second Life forums<\/a> for warnings about bad faith viewers, etc. These may be posted in the General forum or within the Technology forum.<\/li>\n<\/ul>\n<p data-adtags-visited=\"true\"><em>My thanks to Chaser Zaks and Inara Pey for allowing me to reproduce his work here and for his work in investigating the \u201cviewer\u201d in question; also thanks to Soft Linden for pointing me towards Chaser\u2019s Github document. Do be sure to read the latter as well, as it also includes code snippets for those with a more technical interest.<\/em><\/p>\nBe Safe and DON&#8217;T CLICK ON ANYTHING FROM ANYONE YOU DON&#8217;T KNOW!<\/li>\n<li>\n<h2>Zoha Islands\/ Fruit Islands<\/h2>\n<\/li>\n<\/ul>\n<\/div>\n<\/article>\n<\/main><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Posted by Inara Pey The last several days have seen the circulation of news regarding what is patiently a scam viewer. The item in question is being \u201cpromoted\u201d by means of an IM circulating to users promising all sorts of goodies and advantages: free Linden Dollars! Freedom to build where you please! And so on. &hellip; <a href=\"https:\/\/zoha-islands.com\/blog\/dissecting-the-free-l-viewer-scam-chaser-zaks\/\" class=\"more-link\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":7336,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2,3,4,5,6],"tags":[],"_links":{"self":[{"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/posts\/7329"}],"collection":[{"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/comments?post=7329"}],"version-history":[{"count":0,"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/posts\/7329\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/media\/7336"}],"wp:attachment":[{"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/media?parent=7329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/categories?post=7329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zoha-islands.com\/blog\/wp-json\/wp\/v2\/tags?post=7329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}