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Category — Antivirus
Hackers Use Corrupted ZIPs and Office Docs to Evade Antivirus and Email Defenses

Hackers Use Corrupted ZIPs and Office Docs to Evade Antivirus and Email Defenses

Dec 04, 2024 Email Security / Malware
Cybersecurity researchers have called attention to a novel phishing campaign that leverages corrupted Microsoft Office documents and ZIP archives as a way to bypass email defenses. "The ongoing attack evades #antivirus software, prevents uploads to sandboxes, and bypasses Outlook's spam filters, allowing the malicious emails to reach your inbox," ANY.RUN said in a series of posts on X. The malicious activity entails sending emails containing ZIP archives or Office attachments that are intentionally corrupted in such a way that they cannot be scanned by security tools. These messages aim to trick users into opening the attachments with false promises of employee benefits and bonuses. In other words, the corrupted state of the files means that they are not flagged as suspicious or malicious by email filters and antivirus software. However, the attack still works because it takes advantage of the built-in recovery mechanisms of programs like Word, Outlook, and WinRAR ...
Cybercriminals Exploit Popular Game Engine Godot to Distribute Cross-Platform Malware

Cybercriminals Exploit Popular Game Engine Godot to Distribute Cross-Platform Malware

Nov 28, 2024 Windows Security / Cryptomining
A popular open-source game engine called Godot Engine is being misused as part of a new GodLoader malware campaign, infecting over 17,000 systems since at least June 2024. "Cybercriminals have been taking advantage of Godot Engine to execute crafted GDScript code which triggers malicious commands and delivers malware," Check Point said in a new analysis published Wednesday. "The technique remains undetected by almost all antivirus engines in VirusTotal." It's no surprise that threat actors are constantly on the lookout for new tools and techniques that can help them deliver malware while sidestepping detection by security controls, even as defenders continue to erect new guardrails. The newest addition is Godot Engine , a game development platform that allows users to design 2D and 3D games across platforms , including Windows, macOS, Linux, Android, iOS, PlayStation, Xbox, Nintendo Switch, and the web. The multi-platform support also makes it an attract...
7 PAM Best Practices to Secure Hybrid and Multi-Cloud Environments

7 PAM Best Practices to Secure Hybrid and Multi-Cloud Environments

Dec 04, 2024Risk Management / Zero Trust
Are you using the cloud or thinking about transitioning? Undoubtedly, multi-cloud and hybrid environments offer numerous benefits for organizations. However, the cloud's flexibility, scalability, and efficiency come with significant risk — an expanded attack surface. The decentralization that comes with utilizing multi-cloud environments can also lead to limited visibility into user activity and poor access management.  Privileged accounts with access to your critical systems and sensitive data are among the most vulnerable elements in cloud setups. When mismanaged, these accounts open the doors to unauthorized access, potential malicious activity, and data breaches. That's why strong privileged access management (PAM) is indispensable. PAM plays an essential role in addressing the security challenges of complex infrastructures by enforcing strict access controls and managing the life cycle of privileged accounts. By employing PAM in hybrid and cloud environments, you're not...
Researchers Uncover Malware Using BYOVD to Bypass Antivirus Protections

Researchers Uncover Malware Using BYOVD to Bypass Antivirus Protections

Nov 25, 2024 Malware / Windows Security
Cybersecurity researchers have uncovered a new malicious campaign that leverages a technique called Bring Your Own Vulnerable Driver ( BYOVD ) to disarm security protections and ultimately gain access to the infected system. "This malware takes a more sinister route: it drops a legitimate Avast Anti-Rootkit driver (aswArPot.sys) and manipulates it to carry out its destructive agenda," Trellix security researcher Trishaan Kalra said in an analysis published last week. "The malware exploits the deep access provided by the driver to terminate security processes, disable protective software, and seize control of the infected system." The starting point of the attack is an executable file (kill-floor.exe) that drops the legitimate Avast Anti-Rootkit driver, which is subsequently registered as a service using Service Control (sc.exe) to perform its malicious actions. Once the driver is up and running, the malware gains kernel-level access to the system, allowing it...
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The AppSec & R&D Playbook: How to Align Security and Innovation

websiteBackslashApplication Security
AppSec vs. R&D? Bridge the gap with clear steps to streamline workflows and foster collaboration.
New Stealthy BabbleLoader Malware Spotted Delivering WhiteSnake and Meduza Stealers

New Stealthy BabbleLoader Malware Spotted Delivering WhiteSnake and Meduza Stealers

Nov 18, 2024 Threat Intelligence / Ransomware
Cybersecurity researchers have shed light on a new stealthy malware loader called BabbleLoader that has been observed in the wild delivering information stealer families such as WhiteSnake and Meduza . BabbleLoader is an "extremely evasive loader, packed with defensive mechanisms, that is designed to bypass antivirus and sandbox environments to deliver stealers into memory," Intezer security researcher Ryan Robinson said in a report published Sunday. Evidence shows that the loader is being used in several campaigns targeting both English and Russian-speaking individuals, primarily singling out users looking for generic cracked software as well as business professionals in finance and administration by passing it off as accounting software. Loaders have become an increasingly prevalent method to deliver malware, like stealers or ransomware, often acting as the first stage in an attack chain in a manner that sidesteps traditional antivirus defenses by incorporating a be...
Kaspersky Exits U.S. Market Following Commerce Department Ban

Kaspersky Exits U.S. Market Following Commerce Department Ban

Jul 16, 2024 National Security / Data Security
Russian security vendor Kaspersky has said it's exiting the U.S. market nearly a month after the Commerce Department announced a ban on the sale of its software in the country citing a national security risk. News of the closure was first reported by journalist Kim Zetter. The company is expected to wind down its U.S. operations on July 20, 2024, the same day the ban comes into effect. It's also expected to lay off less than 50 employees in the U.S. "The company has carefully examined and evaluated the impact of the U.S. legal requirements and made this sad and difficult decision as business opportunities in the country are no longer viable," the company said in a statement. In late June 2024, the Commerce Department said it was enforcing a ban after what it said was an "extremely thorough investigation." The company was also added to the Entity List, preventing U.S. enterprises from conducting business with it. It's currently not known what was...
Cybercriminals Employ PhantomLoader to Distribute SSLoad Malware

Cybercriminals Employ PhantomLoader to Distribute SSLoad Malware

Jun 13, 2024 Malware / Cyber Attack
The nascent malware known as SSLoad is being delivered by means of a previously undocumented loader called PhantomLoader, according to findings from cybersecurity firm Intezer. "The loader is added to a legitimate DLL, usually EDR or AV products, by binary patching the file and employing self-modifying techniques to evade detection," security researchers Nicole Fishbein and Ryan Robinson said in a report published this week. SSLoad, likely offered to other threat actors under a Malware-as-a-Service (MaaS) model owing to its different delivery methods, infiltrates systems through phishing emails, conducts reconnaissance, and pushes additional types of malware down to victims. Prior reporting from Palo Alto Networks Unit 42 and Securonix has revealed the use of SSLoad to deploy Cobalt Strike, a legitimate adversary simulation software often used for post-exploitation purposes. The malware has been detected since April 2024. The attack chains typically involve the use o...
Beware: These Fake Antivirus Sites Spreading Android and Windows Malware

Beware: These Fake Antivirus Sites Spreading Android and Windows Malware

May 24, 2024 Malvertising / Endpoint Security
Threat actors have been observed making use of fake websites masquerading as legitimate antivirus solutions from Avast, Bitdefender, and Malwarebytes to propagate malware capable of stealing sensitive information from Android and Windows devices. "Hosting malicious software through sites which look legitimate is predatory to general consumers, especially those who look to protect their devices from cyber attacks," Trellix security researcher Gurumoorthi Ramanathan  said . The list of websites is below - avast-securedownload[.]com, which is used to deliver the  SpyNote trojan  in the form of an Android package file ("Avast.apk") that, once installed, requests for intrusive permissions to read SMS messages and call logs, install and delete apps, take screenshot, track location, and even mine cryptocurrency bitdefender-app[.]com, which is used to deliver a ZIP archive file ("setup-win-x86-x64.exe.zip") that deploys the  Lumma  information stealer malw...
GHOSTENGINE Exploits Vulnerable Drivers to Disable EDRs in Cryptojacking Attack

GHOSTENGINE Exploits Vulnerable Drivers to Disable EDRs in Cryptojacking Attack

May 22, 2024 Cryptojacking / Malware
Cybersecurity researchers have discovered a new cryptojacking campaign that employs vulnerable drivers to disable known security solutions (EDRs) and thwart detection in what's called a Bring Your Own Vulnerable Driver ( BYOVD ) attack. Elastic Security Labs is tracking the campaign under the name REF4578 and the primary payload as GHOSTENGINE. Previous research from Chinese cybersecurity firm Antiy Labs has codenamed the activity as HIDDEN SHOVEL. "GHOSTENGINE leverages vulnerable drivers to terminate and delete known EDR agents that would likely interfere with the deployed and well-known coin miner," Elastic researchers Salim Bitam, Samir Bousseaden, Terrance DeJesus, and Andrew Pease said . "This campaign involved an uncommon amount of complexity to ensure both the installation and persistence of the XMRig miner." It all starts with an executable file ("Tiworker.exe"), which is used to run a PowerShell script that retrieves an obfuscated Power...
Network Threats: A Step-by-Step Attack Demonstration

Network Threats: A Step-by-Step Attack Demonstration

Apr 25, 2024 Endpoint Security / Cyber Security
Follow this real-life network attack simulation, covering 6 steps from Initial Access to Data Exfiltration. See how attackers remain undetected with the simplest tools and why you need multiple choke points in your defense strategy. Surprisingly, most network attacks are not exceptionally sophisticated, technologically advanced, or reliant on zero-day tools that exploit edge-case vulnerabilities. Instead, they often use commonly available tools and exploit multiple vulnerability points. By simulating a real-world network attack, security teams can test their detection systems, ensure they have multiple choke points in place, and demonstrate the value of networking security to leadership. In this article, we demonstrate a real-life attack that could easily occur in many systems. The attack simulation was developed based on the MITRE ATT&CK framework, Atomic Red Team,  Cato Networks ' experience in the field, and publ...
eScan Antivirus Update Mechanism Exploited to Spread Backdoors and Miners

eScan Antivirus Update Mechanism Exploited to Spread Backdoors and Miners

Apr 24, 2024 Cryptocurrency / Threat Intelligence
A new malware campaign has been exploiting the updating mechanism of the eScan antivirus software to distribute backdoors and cryptocurrency miners like XMRig through a long-standing threat codenamed GuptiMiner targeting large corporate networks. Cybersecurity firm Avast said the activity is the work of a threat actor with possible connections to a North Korean hacking group dubbed  Kimsuky , which is also known as Black Banshee, Emerald Sleet, and TA427. "GuptiMiner is a highly sophisticated threat that uses an interesting infection chain along with a couple of techniques that include performing DNS requests to the attacker's DNS servers, performing sideloading, extracting payloads from innocent-looking images, signing its payloads with a custom trusted root anchor certification authority, among others," Avast  said . The intricate and elaborate infection chain, at its core, leverages a security shortcoming in the update mechanism of Indian antivi...
Malicious Google Ads Pushing Fake IP Scanner Software with Hidden Backdoor

Malicious Google Ads Pushing Fake IP Scanner Software with Hidden Backdoor

Apr 18, 2024 Malvertising / Endpoint Security
A new Google malvertising campaign is leveraging a cluster of domains mimicking a legitimate IP scanner software to deliver a previously unknown backdoor dubbed  MadMxShell . "The threat actor registered multiple look-alike domains using a typosquatting technique and leveraged Google Ads to push these domains to the top of search engine results targeting specific search keywords, thereby luring victims to visit these sites," Zscaler ThreatLabz researchers Roy Tay and Sudeep Singh  said . As many as 45 domains are said to have been registered between November 2023 and March 2024, with the sites masquerading as port scanning and IT management software such as Advanced IP Scanner, Angry IP Scanner, IP scanner PRTG, and ManageEngine. While this is  not the first time  threat actors are  banking  on  malvertising techniques  to serve malware via lookalike sites, the development marks the first time the delivery vehicle is being used to propagate a ...
Raspberry Robin Returns: New Malware Campaign Spreading Through WSF Files

Raspberry Robin Returns: New Malware Campaign Spreading Through WSF Files

Apr 10, 2024 Cyber Crime / Malvertising
Cybersecurity researchers have discovered a new Raspberry Robin campaign wave that has been propagating the malware through malicious Windows Script Files ( WSFs ) since March 2024. "Historically, Raspberry Robin was known to spread through removable media like USB drives, but over time its distributors have experimented with other initial infection vectors," HP Wolf Security researcher Patrick Schläpfer  said  in a report shared with The Hacker News. Raspberry Robin, also called QNAP worm, was  first spotted  in September 2021 that has since  evolved into a downloader  for various other payloads in recent years, such as SocGholish, Cobalt Strike, IcedID, BumbleBee, and TrueBot, and also serving as a precursor for ransomware. While the malware was initially distributed by means of USB devices containing LNK files that retrieved the payload from a compromised QNAP device, it has since  adopted other methods  such as social engineering and malv...
SASE Solutions Fall Short Without Enterprise Browser Extensions, New Report Reveals

SASE Solutions Fall Short Without Enterprise Browser Extensions, New Report Reveals

Mar 27, 2024 Data Protection / Browser Security
As SaaS applications dominate the business landscape, organizations need optimized network speed and robust security measures. Many of them have been turning to SASE, a product category that offers cloud-based network protection while enhancing network infrastructure performance. However, a new report: "Better Together: SASE and Enterprise Browser Extension for the SaaS-First Enterprise" ( Download here ), challenges SASE's ability to deliver comprehensive security against web-borne cyber threats on its own. From phishing attacks to malicious extensions and account takeovers, traditional network traffic analysis and security falls short. The report sheds light on these limitations and introduces the role of secure browser extensions as an essential component in a comprehensive security strategy. SASE Advantages and Limitations SASE takes on a dual role in addressing both infrastructure and security. However, while SASE offers clear advantages in security, it may not e...
Alert: New Phishing Attack Delivers Keylogger Disguised as Bank Payment Notice

Alert: New Phishing Attack Delivers Keylogger Disguised as Bank Payment Notice

Mar 27, 2024 Vulnerability / Cybercrime
A new phishing campaign has been observed leveraging a novel loader malware to deliver an information stealer and keylogger called  Agent Tesla . Trustwave SpiderLabs said it identified a phishing email bearing this attack chain on March 8, 2024. The message masquerades as a bank payment notification, urging the user to open an archive file attachment. The archive ("Bank Handlowy w Warszawie - dowód wpłaty_pdf.tar.gz") conceals a malicious loader that activates the procedure to deploy Agent Tesla on the compromised host. "This loader then used obfuscation to evade detection and leveraged polymorphic behavior with complex decryption methods," security researcher Bernard Bautista  said  in a Tuesday analysis. "The loader also exhibited the capability to bypass antivirus defenses and retrieved its payload using specific URLs and user agents leveraging proxies to further obfuscate traffic." The tactic of embedding malware within seemingly benign files is...
New BunnyLoader Malware Variant Surfaces with Modular Attack Features

New BunnyLoader Malware Variant Surfaces with Modular Attack Features

Mar 20, 2024 Cybercrime / Financial Security
Cybersecurity researchers have discovered an updated variant of a stealer and malware loader called  BunnyLoader  that modularizes its various functions as well as allow it to evade detection. "BunnyLoader is dynamically developing malware with the capability to steal information, credentials and cryptocurrency, as well as deliver additional malware to its victims," Palo Alto Networks Unit 42  said  in a report published last week. The new version, dubbed BunnyLoader 3.0, was announced by its developer named Player (or Player_Bunny) on February 11, 2024, with rewritten modules for data theft, reduced payload size, and enhanced keylogging capabilities. BunnyLoader was  first documented  by Zscaler ThreatLabz in September 2023, describing it as a malware-as-a-service (MaaS) designed to harvest credentials and facilitate cryptocurrency theft. It was initially offered on a subscription basis for $250 per month. The malware has since undergone frequent upd...
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