Attackers Target ProxyLogon Exploit to Install Cryptojacker

Cryptojacking can be added to the list of threats that face any unpatched Exchange servers that remain vulnerable to the now-infamous ProxyLogon exploit, new research has found. Researchers discovered the threat actors using Exchange servers compromised using the highly publicized exploit...

TrickBot Takes Over, After Cops Kneecap Emotet

A massive malicious spam campaign, along with the global takedown of Emotet, has vaulted the TrickBot trojan to the top of the Check Point’s list of the most popular malware among cybercriminals for February. In January, TrickBot was ranked third on Check Point’s list, and it was fourth overall f...

Fake Ad Blocker Delivers Hybrid Cryptominer/Ransomware Infection

At its previous peak in February, the Monero Miner cryptocurrency ransominer was targeting more than 2,500 users a day, disguised as an antivirus installer. Now, the tricky hybrid malware is on the rise again, this time impersonating an ad blocker and OpenDNS service. In total, it has infected mo...

DanaBot Malware Roars Back into Relevancy

Researchers are warning that a new fourth version of the DanaBot banking trojan has surfaced after months of mysteriously going quiet. The latest variant, still under analysis by researchers, is raising concerns given the number of past DanaBot effective campaigns. From May 2018 to June 2020,...

SQL Server Malware Tied to Iranian Software Firm, Researchers Allege

Researchers have made new discoveries surrounding the source of a previously-uncovered cryptomining operation that has targeted internet-facing database servers. The campaign, dubbed MrbMiner, was discovered in September 2020 downloading and installing a cryptominer on thousands of SQL servers...

Python Cryptominer Botnet Quickly Adopts Latest Vulnerabilities

Over the last few days, Imperva researchers have monitored the emergence of a new botnet, one whose primary activity is performing different DDoS attacks and mining cryptocurrency. It also acts as a worm trying to extend its reach by scanning specific subnets and ports and using different remote...

Gitpaste-12 Worm Widens Set of Exploits in New Attacks

The Gitpaste-12 worm has returned in new attacks targeting web applications, IP cameras and routers, this time with an expanded set of exploits for initially compromising devices. First discovered in a round of late-October attacks that targeted Linux-based servers and internet-of-things IoT...

suricata-rules

This repository contains Suricata IDS Intrusion Detection System rules for detecting various types of malicious activity, including CobaltStrike, CryptoMiner, and other threats. The rules are designed to identify specific patterns and behaviors associated with these threats. The rules are organiz...

Undetectable Linux Malware Targeting Docker Servers With Exposed APIs

Cybersecurity researchers today uncovered a completely undetectable Linux malware that exploits undocumented techniques to stay under the radar and targets publicly accessible Docker servers hosted with popular cloud platforms, including AWS, Azure, and Alibaba Cloud. Docker is a popular...

This Week in Security News: Google Faces Privacy Lawsuit Over Tracking Users in Incognito Mode and TrickBot Adds Enterprise-grade Module to Malware Arsenal

Welcome to our weekly roundup, where we share what you need to know about the cybersecurity news and events that happened over the past few days. This week, learn about a new module for the infamous trojan known as TrickBot that has been deployed. Also, read about Google’s $5 billion class-action...

WARNING: Hackers Install Secret Backdoor on Thousands of Microsoft SQL Servers

Cybersecurity researchers today uncovered a sustained malicious campaign dating back to May 2018 that targets Windows machines running MS-SQL servers to deploy backdoors and other kinds of malware, including multi-functional remote access tools RATs and cryptominers. Named "Vollgar " after the...

Domen toolkit gets back to work with new malvertising campaign

Last year, we documented a new social engineering toolkit we called "Domen" being used in the wild. Threat actors were using this kit to trick visitors into visiting compromised websites and installing malware under the guise of a browser update or missing font. Despite being a robust toolkit, we...

LibMiner: Container-Based Cryptocurrency Miner Targeting Unprotected Redis Servers

Qualys is actively tracking threats which target containers. In our recent analysis, we have identified a few docker instances executing a malware which we term as “LibMiner”. This malware has the capability to deploy and execute Cryptominer. It uses a unique technique for lateral movement across...

Elderly China Chopper Tool Still Going Strong in Multiple Campaigns

A nine-year-old web shell used for providing remote access to web servers for cyberattackers is staying very active despite its advanced age in cyber-years, anyway. Researchers said they’ve spotted it being used in several recent campaigns – all with disparate goals. The tool, known as China...

Norman Cryptominer Employs Sophisticated Obfuscation Tactics

A never-before-seen cryptomining variant, dubbed “Norman” after one of its executable files, has been spotted in the wild using various techniques to hide and avoid discovery. The levels of obfuscation are notable for their sheer depth, according to an analysis. Varonis uncovered an initial sampl...

A week in security (June 17 – 23)

Last week on the Malwarebytes Labs blog, we took a look at the growing pains of smart cities, took a deep dive into AI, jammed along to Radiohead, and looked at the lessons learned from Chernobyl in relation to critical infrastructure. We also explored a new Steam phish attack, and pulled apart a...

Millions of Linux Servers Under Worm Attack Via Exim Flaw

A widespread campaign is exploiting a vulnerability in the Exim mail transport agent MTA to gain remote command-execution on victims’ Linux systems. Researchers say that currently more than 3.5 million servers are at risk from the attacks, which are using a wormable exploit. Specifically under...

A week in security (April 22 – 28)

Last week on Labs, we looked at security threats to headphones, privacy options in the world of law, and wandered through the FBI’s 2018 IC3 online crime report. We also explored another MageCart attack, and we released our 2019 Q1 Crime Tactics and Techniques report. Other cybersecurity news...

This Week in Security News: Medical Malware and Monitor Hacks

Welcome to our weekly roundup, where we share what you need to know about the cybersecurity news and events that happened over the past few days. This week, learn how baby monitors may be susceptible to hacking. Also, learn about a medical flaw that enables hackers to hide malware. Read on: Is Yo...

Qualys BrowserCheck CoinBlocker Protects Users From Active Cryptojacking Campaigns

Qualys Malware Research Labs recently released the Qualys BrowserCheck CoinBlocker Chrome Extension. We have seen enthusiastic adoption from users across the globe in the first week since its release, which has given us enough telemetry data to indicate success in protecting users from popular...