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CATEGORY ARCHIVES: malware

Why Email Is Such a Dangerous Platform (And How to Protect Yourself)

Malicious emails are one of the cyber realm’s most widespread epidemics. Over 215 billion business and consumer emails are received daily, and with such an overwhelming flow of emails arises a very attractive opportunity for threat actors to easily penetrate victims’ online activity and lure them in to giving up credentials, downloading malware and more. According to the Symantec Internet Threat Security Report, one out of 412 emails contains a malware attack.

Although it seems as though cyber awareness is somewhat increasing due to the attempt to keep up with rapid advances in attack techniques, preying on human error continues to be extremely rewarding for threat actors. In retrospect, many email attack victims are dumbfounded when they realize that the email they so willingly acted upon is quite obviously suspicious upon second look. On top of that are highly thought out, sometimes tailored malicious emails, which do not even alert relatively cyber-aware people.

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Shlayer the MacOS Trojan Slays its Way into the New Year

While it does not boast any special or complex installation tactics, Shlayer’s distribution vector has made it a tremendous success - the malware has been the most prevalent MacOS strain since its debut two years ago, never falling off its leading spot. Shlayer uses a well-known infection tactic – pressing on a bad link directs the victim to a fake Adobe Flash update.

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ThreatSTOP Free Open Source Analysis Tools Series. Part 6: Guildma Information Stealer Use Case

 

Earlier this month, a new variant of the Guildma information stealer was analyzed by the Internet Storm Center (ISC). The malware’s new campaign has been seen targeting various countries in South America, with the highest number of infections recorded in Brazil. It seems that Guildma is spreading quickly, with another recent campaign reaching over 150,000 infection attempts in a matter of weeks.

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ThreatSTOP Free Open Source Analysis Tools Series. Part 4: Enrichments & Connecting the Dots

 

Making connections and finding new indicators is an important part of IOC analysis, and is probably the most enjoyable part as well. Blog posts and reports on new threats will usually mention the indicators seen to be used by the specific malware sample or attack vector analyzed, yet in many cases there is a larger malicious infrastructure behind them just waiting to be uncovered (and blocked!). Sometimes, a whole other malicious infrastructure can be revealed by examining IOCs related to malicious IPs and domains. There are a variety of tools out there that can help analysts investigate indicators of compromise and their infrastructure, and perform enrichment to shed light on related, malicious IOCs.

In this post, we will review some of our Security Research Team’s favorite connection and enrichment platforms.

 

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Getting Real (SMB) Value From Threat Intelligence

You’ve probably heard of Threat Intelligence, it's all the rage and all the cool kids are doing it… where’ve you been? Threat Intelligence, or “TI,” is everywhere and in everything, and it can be cool, but it can also be slippery and confusing and complex and a huge waste of time and resources depending on what you do (or don’t do) with it. In this post, we’re going to make a bunch of snarky statements about Threat Intelligence, and we’re going to spill the tea on how you (as a small or medium sized business) can use it and actually get some security value in return.

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Upgraded JasperLoader Infecting Machines with New Targets & Functional Improvements: What You Need to Know

 

A few months ago, JasperLoader (a new malware loader) emerged, infecting systems with various malware payloads, such as the Gootkit Banking Trojan. After a short, initial campaign, the threat actors behind the malware halted their activity and JasperLoader went off the radar for a while. However, since late May, a new and upgraded version of JasperLoader has been spotted infecting machines across Europe.

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Timeline: LokiBot Trojan Surges with Malspam Campaigns Targeting Windows-Running Machines

LokiBot is a banking Trojan, crypto-miner and info-stealer, with versions running on both Windows and Android operating systems. The malware can also transform in to ransomware on mobile devices, if victims try to remove it from the device.

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Why You Need to Block the Threat Factory. Not Just the Threats.

 

Cyber criminals will create roughly 100 million new malware variants over the next 12 months. Security vendors will respond with new malware signatures and behaviors to stop them, but thousands of companies will be victimized in the process, experiencing costly or catastrophic breaches. This isn’t new - it’s a cycle.

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These Factors MUST Work For Every Successful Ransomware Attack. DNS is Always Involved.

A government agency that found itself infected with ransomware and having to pay the ransom to restore service. Another local agency has opted not to pay the ransom and restore operations. Ransomware targeted at organizations is still a threat and even with backups, you have a highly disruptive and public event to try to get back online that comes with serious costs and potentially lost revenue.

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Torii: The New IoT Botnet You Might Need to Start Worrying About

An extremely sophisticated IoT botnet has recently been discovered and dubbed “Torii.” One of Torii malware’s many advanced capabilities is running on just about every type of smartphone, computer and tablet, with over 100 malware variants supporting over 15 different architectures.

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