Babuk ransomware builder leaked following muddled “retirement”

In the last days of April 2021, the operators of Babuk ransomware announced they were going to focus on demanding a ransom for information stolen from compromised networks, leaving the encryption part of their operation behind. It meant that they no longer needed ransomware at all. “Babuk changes...

Lil’ skimmer, the Magecart impersonator

This blog post was authored by Jérôme Segura A very common practice among criminals consists of mimicking legitimate infrastructure when registering new domain names. This is very true for Magecart threat actors who love to impersonate Google, jQuery and many other popular brands. In this post we...

Strategies, tools, and frameworks for building an effective threat intelligence team

How to think about building a threat intelligence program The security community is continuously changing, growing, and learning from each other to better position the world against cyber threats. In the latest Voice of the Community blog series post, Microsoft Product Marketing Manager Natalia...

Strategies, tools, and frameworks for building an effective threat intelligence team

How to think about building a threat intelligence program The security community is continuously changing, growing, and learning from each other to better position the world against cyber threats. In the latest Voice of the Community blog series post, Microsoft Product Marketing Manager Natalia...

A week in security (May 17 – May 23)

Last week on Malwarebytes Labs, we looked at a banking trojan full of nasty tricks, explained some tips and pointers for using VirusTotal, and dug into how an authentication vulnerability was patched by Pega Infinity. We also explored how a Royal Mail phish deploys evasion tricks to avoid analysi...

4 things you should know about testing AV software with VirusTotal’s free online multiscanner

As COVID-19 soldiers on, small and medium-size businesses now feel as ripe for malware attacks as deep-pocketed multinationals. SMBs see that, along with remote work, our pandemic has also brought troubling new holes to their security. This means cybercriminals—equal opportunity charlatans that...

New Pingback Malware Using ICMP Tunneling to Evade C&C Detection

Researchers on Tuesday disclosed a novel malware that uses a variety of tricks to stay under the radar and evade detection, while stealthily capable of executing arbitrary commands on infected systems. Called 'Pingback,' the Windows malware leverages Internet Control Message Protocol ICMP tunneli...

Breaking free from the VirusTotal silo: Lock and Code S02E07

This week on Lock and Code, we speak to Malwarebytes Chief Information Security Officer John Donovan about the flaws in using VirusTotal as the one source of truth when evaluating whether or not a cybersecurity tool actually works. Its a practice that is surprisingly common. Weeks ago, Malwarebyt...

Prometei Botnet Exploiting Unpatched Microsoft Exchange Servers

Attackers are exploiting the ProxyLogon Microsoft Exchange Server flaws to co-opt vulnerable machines to a cryptocurrency botnet named Prometei, according to new research. "Prometei exploits the recently disclosed Microsoft Exchange vulnerabilities associated with the HAFNIUM attacks to penetrate...

Did Someone at the Commerce Dept. Find a SolarWinds Backdoor in Aug. 2020?

On Aug. 13, 2020, someone uploaded a suspected malicious file to VirusTotal, a service that scans submitted files against more than five dozen antivirus and security products. Last month, Microsoft and FireEye identified that file as a newly-discovered fourth malware backdoor used in the sprawlin...

CISA and CNMF Analysis of SolarWinds-related Malware

CISA and the Department of Defense DoD Cyber National Mission Force CNMF have analyzed additional SolarWinds-related malware variants—referred to as SUNSHUTTLE and SOLARFLARE. One of the analyzed files was identified as a China Chopper webshell server-side component that was observed on a network...

RAT-el - An Open Source Penetration Test Tool That Allows You To Take Control Of A Windows Machine

RAT-el is an open source penetration test tool that allows you to take control of a windows machine. It works on the client-server model, the server sends commands and the client executes the commands and sends the result back to the server. The client is completely undetectable by anti-virus...

Knockpy 4.1.1 - CSV Injection

Exploit Title: Knockpy 4.1.1 - CSV Injection Author: Dolev Farhi Date: 2020-12-29 Vendor Homepage: https://github.com/guelfoweb/knock Version : 4.1.1 Tested on: Debian 9.13 Knockpy, as part of its subdomain brute forcing flow of a remote domain, issues a HEAD request to the server to fetch detail...

Knockpy 4.1.1 CSV Injection

Exploit Title: Knockpy 4.1.1 - CSV Injection Author: Dolev Farhi Date: 2020-12-29 Vendor Homepage: https://github.com/guelfoweb/knock Version : 4.1.1 Tested on: Debian 9.13 Knockpy, as part of its subdomain brute forcing flow of a remote domain, issues a HEAD request to the server to fetch detail...

Knockpy 4.1.1 - CSV Injection Exploit

Exploit Title: Knockpy 4.1.1 - CSV Injection Author: Dolev Farhi Vendor Homepage: https://github.com/guelfoweb/knock Version : 4.1.1 Tested on: Debian 9.13 Knockpy, as part of its subdomain brute forcing flow of a remote domain, issues a HEAD request to the server to fetch details such as headers...

Freki - Malware Analysis Platform

Freki is a free and open-source malware analysis platform. Goals 1. Facilitate malware analysis and reverse engineering; 2. Provide an easy-to-use REST API for different projects; 3. Easy deployment via Docker; 4. Allow the addition of new features by the community. Current features Hash...

CISA and CNMF Identify a New Malware Variant: Zebrocy

Content: The Cybersecurity and Infrastructure Security Agency CISA and the Department of Defense DOD Cyber National Mission Force CNMF have identified a malware variant—referred to as Zebrocy—used by a sophisticated cyber actor. In addition, U.S. Cyber Command has released the malware sample to t...

CISA, FBI, and CNMF Identify a New Malware Variant: ComRAT

The Cybersecurity and Infrastructure Security Agency CISA, the Federal Bureau of Investigation FBI, and the Department of Defense Cyber National Mission Force CNMF have identified a malware variant—referred to as ComRAT—used by the Russian-sponsored advanced persistent threat APT actor Turla. In...

CrimeOps of the KashmirBlack Botnet – Part II

Introduction The previous blog - “CrimeOps of the KasmirBlack Botnet - Part I” - described the DevOps behind the botnet. It showed how its well-designed infrastructure makes it easy to expand and add new exploits or payloads without much effort,and explained the evolution and version deployment o...

This Week in Security News: Cybercriminals Use Stolen Data and Hacking Tools as Prizes in Poker Games and Rap Battles and VirusTotal Now Supports Trend Micro ELF Hash

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 how cybercriminals are passing the time during the COVID-19 pandemic with online poker games, where the prizes include stolen...