Kronos Banking Trojan Surfaces After Years of Silence

The Kronos banking trojan is back from the malware dustbin. After years of lying dormant, hackers have reworked the underlying code and are actively targeting victims in Germany, Japan and Poland. The latest variant has incorporated a new command-and-control feature designed to work with the Tor...

Smaller Nation State Attacks: A Growing Cyber Menace

Last year, a Qatari state media website was compromised and defaced with false reports of the Emir of that country praising Iran and Hamas. The fake content was blasted on social media and amplified through bots, eventually provoking a regional boycott that persists today. Andrea Little Limbago...

Hawkeye Keylogger – Reborn v8: An in-depth campaign analysis

Much of cybercrime today is fueled by underground markets where malware and cybercriminal services are available for purchase. These markets in the deep web commoditize malware operations. Even novice cybercriminals can buy malware toolkits and other services they might need for malware campaigns...

To crypt, or to mine – that is the question

Way back in 2013 our malware analysts spotted the first malicious samples related to the Trojan-Ransom.Win32.Rakhni family. That was the starting point for this long-lived Trojan family, which is still functioning to this day. During that time the malware writers have changed: the way their Troja...

The Effects of Iran's Telegram Ban

The Center for Human Rights in Iran has released a report outlining the effect's of that country's ban on Telegram, a secure messaging app used by about half of the country. The ban will disrupt the most important, uncensored platform for information and communication in Iran, one that is used...

Global Threats to Information Systems

The advanced capabilities of organized hacker groups and cyber threat actors are an increasing global threat to information systems. Rising threat levels place more demands on cybersecurity personnel and network administrators to protect information systems. Protecting network infrastructure is...

PSA: Recruitment portals and job sites at risk

Readers of Malwarebytes Labs aren't new to the social engineering tactics of malcontents to get users to respond to fake job offers via email. In 2014, we wrote about spam claiming to be from the recipient's supposed work application to a "Career Services Department," only to be redirected to a...

Despite Ringleader’s Arrest, Cobalt Group Still Active

Evidence has surfaced that the Cobalt Group – the threat actors behind widespread attacks on banks and ATM jackpotting campaigns across Europe – is continuing to operate, despite the arrest of its accused ringleader in March. The Cobalt Group, first burst on the scene in 2016: in a single night,...

GandCrab Ransomware Found Hiding on Legitimate Websites

The GandCrab ransomware continues to virulently spread and adapt to shifting cyber-conditions, most recently crawling back into relevance on the back of several large-scale spam campaigns. What’s interesting is that GandCrab payload was found hiding on legitimate but compromised websites. These,...

Gandcrab Ransomware Walks its Way onto Compromised Sites

This blog post authored by Nick Biasini with contributions from Nick Lister and Christopher Marczewski. Despite the recent decline in the prevalence of ransomware in the threat landscape, Cisco Talos has been monitoring the now widely distributed ransomware called Gandcrab. Gandcrab uses both...

Phishing in the Wild: A New Threat Research Paper

Phishing is an extremely common attack vector that has been used for many years, and the potential impact and risks involved are well known to most Internet users. Despite this, phishing is still a highly relevant attack method being used in the wild, affecting many people. The question is, how c...

Metamorfo Campaigns Targeting Brazilian Users

FireEye Labs recently identified several widespread malspam malware spam campaigns targeting Brazilian companies with the goal of delivering banking Trojans. We are referring to these campaigns as Metamorfo. Across the stages of these campaigns, we have observed the use of several tactics and...

Metamorfo Campaigns Targeting Brazilian Users

FireEye Labs recently identified several widespread malspam malware spam campaigns targeting Brazilian companies with the goal of delivering banking Trojans. We are referring to these campaigns as Metamorfo. Across the stages of these campaigns, we have observed the use of several tactics and...

RSAC 2018: Tech Giants Form Cybersecurity Tech Accord

SAN FRANCISCO – Microsoft President Brad Smith during a keynote at the 2018 RSA Conference condemned government-backed cyberattacks as endangering innocent civilian’s lives – and said that tech companies need to come together to “open the world’s eyes to the impact that this is having.” At this...

Magnitude exploit kit switches to GandCrab ransomware

The GandCrab ransomware is reaching far and wide via malspam, social engineering schemes, and exploit kit campaigns. On April 16, we discovered that Magnitude EK, which had been loyal to its own Magniber ransomware, was now being leveraged to push out GandCrab, too. While Magnitude EK remains...

A week in security (April 09 – April 15)

Last week, we took a look at a malware-campaign called FakeUpdates, methods to use secure instant messaging, the inner workings of a decryption tool, and some Facebook spam campaigns. We also published our first quarterly Malwarebytes Labs CTNT report of 2018. Other news A security researcher...

Easter Holiday Phishing Scams and Malware Campaigns

As the Easter holiday approaches, NCCIC/US-CERT reminds users to be aware of potential holiday scams and cyber campaigns, which may include emails and ecards from unknown senders that may contain malicious links, fake advertisements or shipping notifications with attachments infected with malware...

Your new friend, KLara

While doing threat research, teams need a lot of tools and systems to aid their hunting efforts – from systems storing Passive DNS data and automated malware classification to systems allowing researchers to pattern-match a large volume of data in a relatively short period of time. These tools ar...

Facebook Data Privacy Policies Bashed By Critics After Cambridge Analytica Incident

Facebook is in hot water after acknowledging that a consulting group – that has worked on several high profile political campaigns, including that of President Donald Trump’s – used the social media company’s platform to harvest the data of 50 million users. The company last week said that in 201...

Hermes ransomware distributed to South Koreans via recent Flash zero-day

This blog post was authored by @hasherezade, Jérôme Segura and Vasilios Hioureas. At the end of January, the South Korean Emergency Response Team KrCERT published news of a Flash Player zero-day used in targeted attacks. The flaw, which exists in Flash Player 28.0.0.137 and below, was distributed...