Kaspersky analysis of the backdoor in XZ
Kaspersky analysis of the backdoor recently found in XZ, which is used in many popular Linux distributions and in OpenSSH server process.
Qakbot Strikes Back: Understanding the Threat
Binary Defense threat researchers analyzed the reemergence of the QakBot botnet. The new QakBot DLL has undergone some minor changes.
Distinctive Campaign Evolution of Pikabot Malware
Authored by Anuradha and Preksha Introduction PikaBot is a malicious backdoor that has been active since early 2023. Its modular design is comprised of a
DJI Mavic 3 Drone Research: Vulnerability Analysis
Nozomi Networks Labs found 9 vulnerabilities in DJI drones - we outline the research process for identifying and mitigating these security issues.
GitHub - amlweems/xzbot: notes, honeypot, and exploit demo for the xz backdoor (CVE-2024-3094)
notes, honeypot, and exploit demo for the xz backdoor (CVE-2024-3094) - amlweems/xzbot
xz/liblzma: Bash-stage Obfuscation Explained - gynvael.coldwind//vx.log
esterday Andres Freund emailed oss-security@ informing the community of the discovery of a backdoor in xz/liblzma, which affected OpenSSH server (huge respect for noticing and investigating this). Andres' email is an amazing summary of the whole drama, so I'll skip that. While admittedly most juicy and interesting part is the obfuscated binary with the backdoor, the part that caught my attention – and what this blogpost is about – is the initial part in bash and the simple-but-clever obfuscation methods used there. Note that this isn't a full description of what the bash stages do, but rather a write down of how each stage is obfuscated and extracted.
Shc Linux Malware Installing CoinMiner
The ASEC analysis team recently discovered that a Linux malware developed with Shc has been installing a CoinMiner. It is presumed that after successful authentication through a dictionary attack on inadequately managed Linux SSH servers, various malware were installed on the target system. Among those installed were the Shc downloader, XMRig CoinMiner installed through the former, and DDoS IRC Bot, developed with Perl.
CVE-2022-27925
On May 10, 2022, Zimbra released versions 9.0.0 patch 24 and 8.8.15 patch 31 to address multiple vulnerabilities in Zimbra Collaboration Suite, including CVE-2…
CVE-2022-35650 Analysis
CVE-2022-35650 The vulnerability was found in Moodle, occurs due to input validation error when importing lesson questions. This insufficient path checks results in arbitrary file read risk. This vulnerability allows a remote attacker to perform directory traversal attacks. The capability to access this feature is only available to teachers, managers and admins by default.
CVE-2020-3433 : élévation de privilèges sur le client VPN Cisco AnyConnect
Cet article explique comment trois vulnérabilités supplémentaires ont été découvertes dans le client VPN Cisco AnyConnect pour Windows. Elles ont été trouvées suite au développement d’un exploit pour la CVE-2020-3153 (une élévation de privilèges, étudiée dans MISC n°111). Après un rappel du fonctionnement de ce logiciel, nous étudierons chacune de ces nouvelles vulnérabilités.
CVE-2022-30333
On May 6, 2022, Rarlab released version 6.17, which addresses CVE-2022-30333, a path traversal vulnerability reported to them by Sonar, who posted a write-up about it. Sonar specifically calls out Zimbra Collaboration Suite’s usage of unrar as vulnerable (specifically, the amavisd component, which is used to inspect incoming emails for spam and malware). Zimbra addressed this issue in 9.0.0 patch 25 and 8.5.15 patch 32 by replacing unrar with 7z.
BRATA is evolving into an Advanced Persistent Threat
Here we go with another episode about our (not so) old friend, BRATA. In almost one year, threat actors (TAs) have further improved the capabilities of this malware. In our previous blog post [1] we defined three main BRATA variants, which appeared during two different waves detected by our telemetries at the very end of 2021. However, during the last months we have observed a change in the attack pattern commonly used.
ASyncRat surpasses Dridex, TrickBot and Emotet to become dominant email threat
Earlier this year Malwarebytes released its 2022 Threat Review, a review of the most important threats and cybersecurity trends of 2021, and what they could mean for 2022. Among other things it covers the year’s alarming rebound in malware detections, and a significant shift in the balance of email threats.
A closer look at Eternity Malware
In this analysis, Cyble looks at the Eternity Malware suite, listing a wide variety of malware for sale on Telegram.
An update on the threat landscape
Online security is extremely important for people in Ukraine and the surrounding region right now. Government agencies, independent newspapers and public service providers need it to function and individuals need to communicate safely. Google’s Threat Analysis Group (TAG) has been working around the clock, focusing on the safety and security of our users and the platforms that help them access and share important information.
Cybercriminals Transform Raspberry Pi into a Tool for Fraud and Anonymization: GEOBOX Discovery
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Diving Deeper into AI Package Hallucinations
Lass Security's recent research on AI Package Hallucinations extends the attack technique to GPT-3.5-Turbo, GPT-4, Gemini Pro (Bard), and Coral (Cohere).
Tycoon 2FA: an in-depth analysis of the latest version of the AiTM phishing kit
Tycoon 2FA has become one of the most widespread adversary-in-The-Middle (AiTM) phishing kits over the last few months.
Large-Scale StrelaStealer Campaign in Early 2024
We unravel the details of two large-scale StrelaStealer campaigns from 2023 and 2024. This email credential stealer has a new variant delivered through zipped JScript. #2024 #Campaign #EN #JScript #StrelaStealer #analysis #paloaltonetworks
The iSOON Disclosure: Exploring the Integrated Operations Platform
Bishop Fox examines the iSoon data disclosure from an offensive security perspective and an analysis of the platform's capabilities, design, features.
Interesting Multi-Stage StopCrypt Ransomware Variant Propagating in the Wild
Overview The SonicWall Capture Labs threat research team recently observed an interesting variant of StopCrypt ransomware. The ransomware executes its malicious activities by utilizing multi-stage shellcodes before launching a final payload that contains the file […]
The Architects of Evasion: a Crypters Threat Landscape
Learn about key concepts and different crypters-related activities as well as the lucrative ecosystem of malicious groups that exploit them.
The Anatomy of an ALPHA SPIDER Ransomware Attack
Read this blog on the anatomy of an ALPHA SPIDER ransomware attack to better understand how they operate and how to better protect your business.
NoName057(16) DDoSia project: 2024 updates and behavioural shifts
Learn about NoName057(16), a pro-Russian hacktivist group behind Project DDoSia targeting entities supporting Ukraine. Discover an overview of the changes made by the group, both from the perspective of the software shared by the group to generate DDoS attacks and the specifics of the evolution of the C2 servers. It also provides an overview of the country and sectors targeted by the group for 2024.
Scattered Spider laying new eggs
Discover the techniques, tactics (TTPs) used by Scattered Spider intrusion set, including social engineering and targeted phishing campaigns.
A first analysis of the i-Soon data leak
Data from a Chinese cybersecurity vendor that works for the Chinese government exposed a range of hacking tools and services.
Shc Linux Malware Installing CoinMiner
The ASEC analysis team recently discovered that a Linux malware developed with Shc has been installing a CoinMiner. It is presumed that after successful authentication through a dictionary attack on inadequately managed Linux SSH servers, various malware were installed on the target system. Among those installed were the Shc downloader, XMRig CoinMiner installed through the former, and DDoS IRC Bot, developed with Perl.
CVE-2022-27925
On May 10, 2022, Zimbra released versions 9.0.0 patch 24 and 8.8.15 patch 31 to address multiple vulnerabilities in Zimbra Collaboration Suite, including CVE-2…
CVE-2022-35650 Analysis
CVE-2022-35650 The vulnerability was found in Moodle, occurs due to input validation error when importing lesson questions. This insufficient path checks results in arbitrary file read risk. This vulnerability allows a remote attacker to perform directory traversal attacks. The capability to access this feature is only available to teachers, managers and admins by default.
CVE-2020-3433 : élévation de privilèges sur le client VPN Cisco AnyConnect
Cet article explique comment trois vulnérabilités supplémentaires ont été découvertes dans le client VPN Cisco AnyConnect pour Windows. Elles ont été trouvées suite au développement d’un exploit pour la CVE-2020-3153 (une élévation de privilèges, étudiée dans MISC n°111). Après un rappel du fonctionnement de ce logiciel, nous étudierons chacune de ces nouvelles vulnérabilités.