![]() Above we mentioned the “cryptor”, used to protect malware strings before they are actually launched. RedLine Stealer Analysisįirst and foremost, let’s have a look at the way RedLine is unfolding after being delivered to the target system. However, it retains all the functionality of a regular RedLine Stealer sample, and is ready to mischief as usual after the unpacking. At the same time, the sample within this archive is bloated with null sections, thus it will exceed the size limit of certain sandboxes and anti-malware software. The one’s name resembles what the victim is supposed to download, lulling its attention. Malware in this case is masked as a legit software pack – a ZIP archive. Typical example of Google search ads flooded by malicious links Most often, these sites replicate the websites of free software developers, or the official pages for downloading some auxiliary software, like drivers or toolkits. That is not the first case when something malicious slips into Google ads, but the scale of a current case is unprecedented. Recent events with massive flow of malicious ads in Google Search results became a very potent method of malware spreading. ![]() Google is considered a trustworthy advertising platform, where both users and advertisers may be confident about what they see and click. Besides that, samples of this malware delivered by a dropper seriously distinct from ones delivered in a different way. That typically happens with SmokeLoader backdoor, which is in turn often delivered along with STOP/Djvu ransomware. That happens when hackers seek to get into the system as stealthy as possible, and then, after gaining initial access, deploy their own lineup of malicious programs. RedLine Stealer is sometimes applied as an “instant” payload of droppers. a lot of other malware was already delivered, and most of the valuable information is likely to be already extracted. The problems may appear if the network is “used”, i.e. RedLine masters do not disdain this way of spreading, as it is proven to be pretty efficient. Extensive networks of computers that are running a dropper are offered widely in the Darknet, so anyone can pay for uploading their malware to these PCs. Post from the hijacked account of Brazilian ISP that contained a link to RedLine downloading Dropper malwareĭropper, or downloader, is a kind of malware used to deliver other malware to the infected computer. It is something people may expect from a provider and appreciate such care about their clients – and thus will eat the bait. ![]() For example, using an ISP provider’s account hackers made a post with a link that led to RedLine Stealer downloading, which promoted free Adobe software. Instead, they try to look convincingly enough with banners that include details about the organisation or a person, and are related to their usual business. Social engineering, or preceding malware injection supplies hackers with account’s credentials, and here the show starts.Ĭrooks that use this method to spread RedLine rarely fall into obvious spam that may easily be recognised. Facebook, Twitter, Instagram – any social media accessible from PC will fit, the key point is to find accounts that have the most trust. Social network accounts, especially ones that belong to celebrities or well-known organisations, are generally trusted by their subscribers. And it seems they mastered their approaches well enough to overtake all competitors. ![]() Crooks who spread this malware have their own options, despite applying spam in certain cases. Email spamming is both effective and cheap, but attracts too much attention. Bot that RedLine developers use to sell and promote their malware RedLine Stealer SpreadingĪbove we mentioned that RedLine Stealer applies some unique ways of self-propagation, different from what is considered usual these days. ![]()
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