New Cryptocurrency Mining Malware Infected Over 500,000 PCs in Just Few Hours

Two days ago, Microsoft encountered a rapidly spreading cryptocurrency-mining malware that infected almost 500,000 computers within just 12 hours and successfully blocked it to a large extent. Dubbed Dofoil, aka Smoke Loader, the malware was found dropping a cryptocurrency miner program as payloa...

The devil’s in the Rich header

In our previous blog, we detailed our findings on the attack against the Pyeongchang 2018 Winter Olympics. For this investigation, our analysts were provided with administrative access to one of the affected servers, located in a hotel based in Pyeongchang county, South Korea. In addition, we...

CannibalRAT targets Brazil

This post was authored by Warren Mercer and Vitor Ventura Introduction Talos has identified two different versions of a RAT, otherwise known as a remote access trojan, that has been written entirely in Python and is wrapped into a standalone executable. The RAT is impacting users of a Brazilian...

Threat Analysis: ROKRAT Malware

ROKRAT also referred to as DOGcall is a family of malware that has been used by attackers originating from North Korea. The family continues to evolve and adopt techniques from other families also used by the same attack group. The ROKRAT core payload is typically deployed by a loader, which has...

Cyber Espionage Group Targets Asian Countries With Bitcoin Mining Malware

Security researchers have discovered a custom-built piece of malware that's wreaking havoc in Asia for past several months and is capable of performing nasty tasks, like password stealing, bitcoin mining, and providing hackers complete remote access to compromised systems. Dubbed Operation PZChao...

A Death Match of Domain Generation Algorithms

By Hongliang Liu and Yuriy Yuzifovich Originally posted on December 29, 2017 Today's post is all about DGA's Domain Generation Algorithms: what they are, why they came into existence, what are some use cases where they are used, and, most importantly - how to detect and block them. As we will...

A state of constant uncertainty or uncertain constancy? Fast flux explained

Last August, WireX made headlines. For one thing, it was dubbed the first-known DDoS botnet that used the Android platform. For another, it used a technique that—for those who have been around in the industry for quite a while now—rung familiar in the ears: fast flux. In the context of...

GitLab: Lack of validation before assigning custom domain names leading to abuse of GitLab pages service

One way to add a custom domain name for GitLab pages is to create a new DNS A record pointing to the IP of GitLab Pages server i.e. 52.167.214.135. A person who owns the domain name, could then add the domain name in the Pages settings at https://gitlab.com///pages. GitLab then assigns the domain...

RAT Distributed Via Google Drive Targets East Asia

Researchers said that they are tracking a new remote access Trojan dubbed UBoatRAT that is targeting individuals or organizations linked to South Korea or the video game industry. While targets aren’t 100 percent clear, researchers at Palo Alto Networks Unit 42 said UBoatRAT threats are evolving...

Newly Observed Ursnif Variant Employs Malicious TLS Callback Technique to Achieve Process Injection

Introduction TLS Thread Local Storage callbacks are provided by the Windows operating system to support additional initialization and termination for per-thread data structures. As previously reported, malicious TLS callbacks, as an anti-analysis trick, have been observed for quite some time and...

Google Detects Android Spyware That Spies On WhatsApp, Skype Calls

In an attempt to protect Android users from malware and shady apps, Google has been continuously working to detect and remove malicious apps from your devices using its newly launched Google Play Protect service. Google Play Protect—a security feature that uses machine learning and app usage...

BankBot Returns On Play Store – A Never Ending Android Malware Story

Even after so many efforts by Google for making its Play Store away from malware, shady apps somehow managed to fool its anti-malware protections and infect people with malicious software. A team of researchers from several security firms has uncovered two new malware campaigns targeting Google...

Mitigating and eliminating info-stealing Qakbot and Emotet in corporate networks

The threat to sensitive financial information is greater than ever. Data breaches, phishing attacks, and other forms of information theft are all too common in today’s threat landscape. Point-of-sale systems and ATMs have been targeted by hackers. Information-stealing trojans pose a risk to data...

Excerpts from The Ransomware Economy: The Ransomware Supply Chain

Carbon Black recently published an investigative report on the Dark Web marketplace for ransomware. This is an excerpt from that report, which you can find here. For more information about the rise of ransomware, and what you can do about it, check out the Ransomware Epidemic: Stop Bad Rabbit In...

System Compromise

npm-script-demo compromises the system. It is possible because the module can create an unauthorized connection to a command and control server when it is installed...

Malicious Chrome Extension Steals Data Posted to Any Website

Malicious browser extensions continue to bear fruit for hackers who have been using them to spread banking malware and adware, and hijacking popular add-ons to spread other nasty code. The latest abuse involves a Google Chrome extension being spread in phishing emails that steals any data posted...

Latest Sofacy Campaign Targeting Security Researchers

Sofacy, the Russian-speaking APT group connected to interference in the 2016 U.S. presidential election, has been targeting researchers, admins and others interested in cybersecurity. Cisco’s security research arm Talos published a report on Sunday describing a campaign linked to Sofacy, also kno...

‘IOTroop’ Botnet Could Dwarf Mirai in Size and Devastation, Says Researcher

A botnet, which is adding new bots every day, has already infected one million businesses during the past month and could easily eclipse the size and devastation caused by Mirai. The malware and botnet, dubbed IOTroop, was spotted in September by researchers at Check Point who warn that 60 percen...

Inside the CCleaner Backdoor Attack

MADRID—As the investigation continues into the backdoor planted inside CCleaner, two members of parent company Avast’s threat intelligence team said today the desktop and cloud versions of the popular software contained different payloads. The revelation was made during a talk at Virus Bulletin...

First Android Malware Found Exploiting Dirty COW Linux Flaw to Gain Root Privileges

Nearly a year after the disclosure of the Dirty COW vulnerability that affected the Linux kernel, cybercriminals have started exploiting the vulnerability against Android users, researchers have warned. Publicly disclosed last year in October, Dirty COW was present in a section of the Linux...