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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 Pow

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 public threat intel. In the end, we explain why a holistic secur

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 antivirus vendor eScan to

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SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike
May 13, 2024Threat Detection / SoC / SIEM
In the last decade, there has been a growing disconnect between front-line analysts and senior management in IT and Cybersecurity. Well-documented challenges facing modern analysts revolve around a high volume of alerts, false positives, poor visibility of technical environments, and analysts spending too much time on manual tasks. The Impact of Alert Fatigue and False Positives  Analysts are overwhelmed with alerts. The knock-on effect of this is that fatigued analysts are at risk of missing key details in incidents, and often conduct time-consuming triaging tasks manually only to end up copying and pasting a generic closing comment into a false positive alert.  It is likely that there will always be false positives. And many would argue that a false positive is better than a false negative. But for proactive actions to be made, we must move closer to the heart of an incident. That requires diving into how analysts conduct the triage and investigation process. SHQ Response Platfo

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 sophisticated Windows backdoo

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 malvertising. It's attribute

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 updates that are aimed

Albabat, Kasseika, Kuiper: New Ransomware Gangs Rise with Rust and Golang

 Albabat, Kasseika, Kuiper: New Ransomware Gangs Rise with Rust and Golang
Jan 29, 2024 Ransomware / Malware
Cybersecurity researchers have detected in the wild yet another variant of the Phobos ransomware family known as  Faust . Fortinet FortiGuard Labs, which detailed the latest iteration of the ransomware, said it's being propagated by means of an infection that delivers a Microsoft Excel document (.XLAM) containing a VBA script. "The attackers utilized the Gitea service to store several files encoded in Base64, each carrying a malicious binary," security researcher Cara Lin  said  in a technical report published last week. "When these files are injected into a system's memory, they initiate a file encryption attack." Faust is the latest addition to several ransomware variants from the Phobos family, including Eking, Eight, Elbie, Devos, and 8Base. It's worth noting that Faust was  previously documented  by Cisco Talos in November 2023. The cybersecurity firm described the variant as active since 2022 and "does not target specific industries or re

New CherryLoader Malware Mimics CherryTree to Deploy PrivEsc Exploits

New CherryLoader Malware Mimics CherryTree to Deploy PrivEsc Exploits
Jan 25, 2024 Threat Intelligence / Malware Research
A new Go-based malware loader called  CherryLoader  has been discovered by threat hunters in the wild to deliver additional payloads onto compromised hosts for follow-on exploitation. Arctic Wolf Labs, which discovered the new attack tool in two recent intrusions, said the loader's icon and name masquerades as the legitimate CherryTree note-taking application to dupe potential victims into installing it. "CherryLoader was used to drop one of two privilege escalation tools,  PrintSpoofer  or  JuicyPotatoNG , which would then run a batch file to establish persistence on the victim device," researchers Hady Azzam, Christopher Prest, and Steven Campbell  said . In another novel twist, CherryLoader also packs modularized features that allow the threat actor to swap exploits without recompiling code. It's currently not known how the loader is distributed, but the attack chains examined by the cybersecurity firm show that CherryLoader ("cherrytree.exe") and i

New iShutdown Method Exposes Hidden Spyware Like Pegasus on Your iPhone

New iShutdown Method Exposes Hidden Spyware Like Pegasus on Your iPhone
Jan 17, 2024 Spyware / Forensic Analysis
Cybersecurity researchers have identified a "lightweight method" called  iShutdown  for reliably identifying signs of spyware on Apple iOS devices, including notorious threats like NSO Group's  Pegasus , QuaDream's  Reign , and Intellexa's  Predator .  Kaspersky, which analyzed a set of iPhones that were compromised with Pegasus, said the infections left traces in a file named "Shutdown.log," a text-based system log file available on all iOS devices and which records every reboot event alongside its environment characteristics. "Compared to more time-consuming acquisition methods like forensic device imaging or a full iOS backup, retrieving the Shutdown.log file is rather straightforward," security researcher Maher Yamout  said . "The log file is stored in a sysdiagnose (sysdiag) archive." The Russian cybersecurity firm said it identified entries in the log file that recorded instances where "sticky" processes, such as

NoaBot: Latest Mirai-Based Botnet Targeting SSH Servers for Crypto Mining

NoaBot: Latest Mirai-Based Botnet Targeting SSH Servers for Crypto Mining
Jan 10, 2024 Server Security / Cryptocurrency
A new Mirai-based botnet called  NoaBot  is being used by threat actors as part of a crypto mining campaign since the beginning of 2023. "The capabilities of the new botnet, NoaBot, include a wormable self-spreader and an SSH key backdoor to download and execute additional binaries or spread itself to new victims," Akamai security researcher Stiv Kupchik said in a report shared with The Hacker News. Mirai , which had its source code leaked in 2016, has been the progenitor of a number of botnets, the most recent being  InfectedSlurs , which is capable of mounting distributed denial-of-service (DDoS) attacks. There are indications that NoaBot could be linked to another botnet campaign involving a Rust-based malware family known as  P2PInfect , which recently received an update to target routers and IoT devices. This is based on the fact that threat actors have also experimented with dropping P2PInfect in place of NoaBot in recent attacks targeting SSH servers, indicating likely at

Researchers Unveil GuLoader Malware's Latest Anti-Analysis Techniques

Researchers Unveil GuLoader Malware's Latest Anti-Analysis Techniques
Dec 09, 2023 Malware / Cyberattack
Threat hunters have unmasked the latest tricks adopted by a malware strain called  GuLoader  in an effort to make analysis more challenging. "While GuLoader's core functionality hasn't changed drastically over the past few years, these constant updates in their obfuscation techniques make analyzing GuLoader a time-consuming and resource-intensive process," Elastic Security Labs researcher Daniel Stepanic  said  in a report published this week. First spotted in late 2019, GuLoader (aka CloudEyE) is an advanced shellcode-based malware downloader that's used to distribute a wide range of payloads, such as information stealers, while incorporating a bevy of sophisticated anti-analysis techniques to dodge traditional security solutions. A  steady stream  of  open-source reporting  into the malware in recent months has revealed the threat actors behind it have continued to improve its ability to bypass existing or new security features alongside other implemented fe

Discover Why Proactive Web Security Outsmarts Traditional Antivirus Solutions

Discover Why Proactive Web Security Outsmarts Traditional Antivirus Solutions
Nov 29, 2023 Proactive vs. Antivirus
In a rapidly evolving digital landscape, it's crucial to reevaluate how we secure web environments. Traditional antivirus-approach solutions have their merits, but they're reactive. A new report delves into the reasons for embracing proactive web security solutions, ensuring you stay ahead of emerging threats.  To learn more, download the full report  here . The New Paradigm If you've been relying on the old-style antivirus-based approach to website security up to now, then we could summarize why you need to update to the more proactive approach simply by saying — prevention is always preferable to cure. That's the overarching rationale for adopting a proactive web security solution, but let's break it down into a few more detailed reasons for updating to the newer and more effective proactive approach.  To be clear, we're not denying that an antivirus-approach solution is ideal for detecting and responding to threats, but there's no escaping the fact that it's limited
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