HTML Smuggling: The Hidden Threat in Your Inbox
Last October, Trustwave SpiderLabs blogged about the use and prevalence of HTML email attachments to deliver malware and phishing for credentials.
Enigma Stealer Targets Cryptocurrency Industry with Fake Jobs
We discovered an active campaign targeting Eastern Europeans in the cryptocurrency industry using fake job lures.
2023 Crypto Crime Trends: Illicit Cryptocurrency Volumes Reach All-Time Highs Amid Surge in Sanctions Designations and Hacking
Every year, we publish our estimates of illicit cryptocurrency activity to demonstrate the power of blockchains’ transparency – these kinds of estimates aren’t possible in traditional finance – and to teach investigators and compliance professionals about the latest trends in cryptocurrency-related crime that they need to know about. What could those estimates look like in a year like 2022? Last year was one of the most tumultuous in cryptocurrency history, with several large firms imploding, including Celsius, Three Arrows Capital, FTX, and others — some amid allegations of fraud.
Bitwarden password vaults targeted in Google ads phishing attack
Bitwarden and other password managers are being targeted in Google ads phishing campaigns to steal users' password vault credentials.
OpenSSL fixes High Severity data-stealing bug – patch now!
7 memory mismanagements and a timing attack. We explain all the jargon bug terminology in plain English…
Russia-linked Lockbit ransomware hacking gang threatens to publish Royal Mail data stolen in cyber attack
Ransomware gang says it will share the stolen information in a matter of days
Sliver Malware With BYOVD Distributed Through Sunlogin Vulnerability Exploitations - ASEC BLOG
Sliver is an open-source penetration testing tool developed in the Go programming language. Cobalt Strike and Metasploit are major examples of penetration testing tools used by many threat actors, and various attack cases involving these tools have been covered here on the ASEC blog. Recently, there have been cases of threat actors using Sliver in addition to Cobalt Strike and Metasploit. The ASEC (AhnLab Security Emergency response Center) analysis team is monitoring attacks against systems with either unpatched vulnerabilities or misconfigured settings. During this process, we have recently discovered a Sliver backdoor being installed through what is presumed to be vulnerability exploitation on certain software. Not only did threat actors use the Sliver backdoor, but they also used the BYOVD (Bring Your Own Vulnerable Driver) malware to incapacitate security products and install reverse shells.
Iran responsible for Charlie Hebdo attacks
Today, Microsoft’s Digital Threat Analysis Center (DTAC) is attributing a recent influence operation targeting the satirical French magazine Charlie Hebdo
Cyberattaque contre l’Université de Zurich: des accès aux serveurs vendus sur le darkweb (update)
Des cybercriminels ont pris l'Université de Zurich pour cible.
Onenote Malware: Classification and Personal Notes
During the past 4 months Microsoft Onenote file format has been (ab)used as Malware carrier by different criminal groups. While the main infection vector is still on eMail side - so nothing really relevant to write on - the used techniques, the templates and the implemented code to inoculate Malware changed a lot. So it…
Detecting OneNote Abuse
OneNote is a software part of the Office suite, commonly used within most organisations for note-keeping, task management and more. In the last year, OneNote gained more attention from a security perspective, mostly thanks to the research paper published by Emeric Nasi.
No Macro? No Worries. VSTO Being Weaponized by Threat Actors
A software development toolset, VSTO is available in Microsoft’s Visual Studio IDE. It enables Office Add-In’s (a type of Office application extension) to be developed in .NET and also allows for Office documents to be created that will deliver and execute these Add-In’s.
Cybercrime: Les hackers avaient aussi sévi en Suisse
Les autorités américaines ont récemment démantelé Hive, un des principaux réseaux mondiaux d’attaques au rançongiciel. Il avait notamment ciblé le groupe automobile Emil Frey et les magasins MediaMarkt.
Massive ESXiArgs ransomware attack targets VMware ESXi servers worldwide
Admins, hosting providers, and the French Computer Emergency Response Team (CERT-FR) warn that attackers actively target VMware ESXi servers unpatched against a two-year-old remote code execution vulnerability to deploy ransomware.
Ransomware : des centaines de serveurs VMware ESXi pris dans une vaste campagne
Déclenchée ce vendredi 3 février, une vaste campagne d’infection avec ransomware frappe les serveurs VMware ESXi à travers le monde. La France ne fait pas exception. L’échelle suggère une opération automatisée.
Campagne d’exploitation d’une vulnérabilité affectant VMware ESXi
Le 03 février 2023, le CERT-FR a pris connaissance de campagnes d'attaque ciblant les hyperviseurs VMware ESXi dans le but d'y déployer un rançongiciel. Dans l'état actuel des investigations, ces campagnes d'attaque semblent exploiter la vulnérabilité CVE-2021-21974, pour laquelle un correctif est disponible depuis le 23 février 2021. Cette vulnérabilité affecte le service Service Location Protocol (SLP) et permet à un attaquant de réaliser une exploitation de code arbitraire à distance. Les systèmes actuellement visés seraient des hyperviseurs ESXi en version 6.x et antérieures à 6.7.
Un ransomware attaque les clients ESXi des hébergeurs français (MAJ)
Plusieurs alertes ont été lancées par différents hébergeurs sur une campagne d'attaque par ransomware concernant des serveurs basés sur l'hyperviseur ESXi de VMware. OVH a dans un premier temps identifié le rançongiciel Nevada dans un blog avant de corriger son message.
Exploitation of GoAnywhere MFT zero-day vulnerability
On Thursday, February 2, 2023, security reporter Brian Krebs published a warning on Mastodon about an actively exploited zero-day vulnerability affecting on-premise instances of Fortra’s GoAnywhere MFT managed file transfer solution. Fortra (formerly HelpSystems) evidently published an advisory on February 1 behind authentication; there is no publicly accessible advisory.
Malware-Traffic-Analysis.net - 2023-02-03 - DEV-0569 activity: Google ad -- FakeBat Loader -- Redline Stealer & Gozi/ISFB/Ursnif
NOTES: Zip files are password-protected. If you don't know the password, see the "about" page of this website. IOCs are listed on this page below all of the images.
Ransomware Roundup – Trigona Ransomware
In this week's Ransomware Roundup, FortiGuardLabs covers Trigona ransomware along with protection recommendations. Read the blog to find out more.
.NET Virtualization Thrives in Malvertising Attacks
.NET malware loaders distributed through malvertising are using obfuscated virtualization for anti-analysis and evasion in an ongoing campaign.
No Pineapple! –DPRK Targeting of Medical Research and Technology Sector
During Q4 2022, WithSecure™ detected and responded to a cyber attack conducted by a threat actor that WithSecure™ have attributed with high confidence to an intrusion set referred to as Lazarus Group. Attribution with high confidence was based off of overlapping techniques tactics and procedures as well as an operational security mistake by the threat actor. Amongst technical indications, the incident observed by WithSecure™ also contains characteristics of recent campaigns attributed to Lazarus Group by other researchers.
Following the Scent of TrickGate: 6-Year-Old Packer Used to Deploy the Most Wanted Malware
- Initially observed in July 2016, TrickGate is a shellcode-based packer offered as a service to hide malware from EDRs and antivirus programs. * Over the last 6 years, TrickGate was used to deploy the top members of the “Most Wanted Malware” list, such as Cerber, Trickbot, Maze, Emotet, REvil, Cobalt Strike, AZORult, Formbook, AgentTesla and more. * TrickGate managed to stay under the radar for years because it is transformative – it undergoes changes periodically. This characteristic caused the research community to identify it by numerous attributes and names. * While the packer’s wrapper changed over time, the main building blocks within TrickGate shellcode are still in use today. * Check Point Threat Emulation successfully detects and blocks the TrickGate packer.
OneNote Documents Increasingly Used to Deliver Malware
Key Findings: * The use of Microsoft OneNote documents to deliver malware via email is increasing. * Multiple cybercriminal threat actors are using OneNote documents to deliver malware. * While some campaigns are targeted at specific industries, most are broadly targeted and include thousands of messages. * In order to detonate the payload, an end-user must interact with the OneNote document. * Campaigns have impacted organizations globally, including North America and Europe. * TA577 returned from a month-long hiatus in activity and began using OneNote to deliver Qbot at the end of January 2023.
Qakbot's Evolution Continues with New Strategies
Cyble Research & Intelligence Labs analyzes new strategies deployed by Qakbot to infect users via Microsoft OneNote.
HeadCrab: A Novel State-of-the-Art Redis Malware in a Global Campaign
HeadCrab: A Novel State-of-the-Art Redis Malware in a Global Campaign Aqua Nautilus researchers discovered a new elusive and severe threat that has been infiltrating and residing on servers worldwide since early September 2021. Known as HeadCrab, this advanced threat actor utilizes a state-of-the-art, custom-made malware that is undetectable by agentless and traditional anti-virus solutions to compromise a large number of Redis servers. The HeadCrab botnet has taken control of at least 1,200 servers. This blog will delve into the details of the HeadCrab attack, examining its methods of operation, techniques used to evade detection, and steps organizations can take to safeguard their systems.
Hospitals urged to tighten DDoS defenses after health data found on Killnet list
The Killnet hacktivist group is actively targeting the health sector with DDoS attacks, claiming to have successfully exfiltrated data from a number of hospitals within the last month, according to a Department of Health and Human Services Cybersecurity Coordination Center alert.
Pro-Russian DDoS attacks raise alarm in Denmark, U.S.
Distributed denial-of-service (DDoS) attacks by pro-Russian hacking groups are causing alarm in the U.S. and Denmark after several incidents affected websites of hospitals and government offices in both countries. On Tuesday, Denmark announced that it was raising its cyber risk alert level after weeks of attacks on banks and the country’s defense ministry.
Google sponsored ads malvertising targets password manager
We have recently written about malvertising campaigns that leverage Google paid advertisements to try and trick people into downloading malware instead of the software they were looking for. This malware then stole login credentials from the affected system.
Action needed for GitHub Desktop and Atom users
Update to the latest version of Desktop and previous version of Atom before February 2.