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Cyware Daily Threat Intelligence

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Daily Threat Briefing • Aug 3, 2023

A cybersecurity team investigating the dark web discovered a new macOS hVNC (Hidden Virtual Network Computing) tool targeting SMEs. The tool allows stealthy remote control of compromised devices, stealing sensitive information without the user's knowledge. Crypto scams continue to get sophisticated with advanced tools. Security experts reported that CryptoRom fraudsters are using AI chat tools and manipulating dating app users to siphon off more money. Besides, they also sneaked seven fake cryptocurrency investment apps into official app stores, increasing the risk for victims.

Separately, an ongoing cyberattack spree exploiting the critical CVE-2023-3519 vulnerability has compromised hundreds of Citrix Netscaler ADC and Gateway servers. The CISA has also warned of attacks against Citrix devices, and Citrix itself confirmed active exploitation of the vulnerability.

Top Breaches Reported in the Last 24 Hours

Data breach impacts millions

The MOVEit saga isn’t over yet as Allegheny County of Pennsylvania issued a warning about a global cybersecurity breach affecting the personal information of individuals, such as driver's licenses and Social Security numbers. The county was targeted by cybercriminals who gained access to files on May 28-29. The hackers, reportedly, asserted their interest in solely obtaining business data and stated that they deleted the remaining files from the county.

Top Malware Reported in the Last 24 Hours

New macOS threat

Israeli cybersecurity company Guardz warned of a new hVNC malware targeting macOS devices. The malware, advertised on a Russian hacker forum, has been available since April 2023. It provides threat actors with stealthy remote control over infected machines, reverse shell, file management, and browser detection capabilities. The main purpose of the malware appears to be data theft, including sensitive information such as credentials, and personal and financial data.

Top Vulnerabilities Reported in the Last 24 Hours

Hundreds of Citrix servers breached, abused

A critical RCE vulnerability, CVE-2023-3519, affecting Citrix Netscaler ADC and Gateway servers has been exploited in a series of attacks, resulting in the compromise of at least 640 servers with web shells. The Shadowserver Foundation disclosed the extent of the attacks, indicating that the actual number of compromised servers is likely higher. Citrix released security updates on July 18th and only little progress has been observed in patching vulnerable servers.

Chrome released updates

The recent Chrome update addresses three high-severity type confusion bugs in the V8 JavaScript and WebAssembly engines. The update also fixes six other high-severity vulnerabilities. As of now, there is no evidence of these vulnerabilities being exploited in attacks. The latest Chrome release is version 115.0.5790.170 for Mac and Linux and version 115.0.5790.170/.171 for Windows.

Top Scams Reported in the Last 24 Hours

Scammers target dating app users

Sophos researchers have identified a rise in CryptoRom scams, a type of pig butchering scheme targeting users of dating apps with fake cryptocurrency investments. The scammers adopted an AI chat tool, possibly ChatGPT, to engage victims in more convincing conversations and extort money by claiming the victims' crypto accounts were hacked. Furthermore, seven new fake cryptocurrency investment apps have been found in the official Apple App Store and Google Play Store, expanding the potential victim pool.

Don’t take those Flipper Devices

Scammers are impersonating Flipper Devices and offering free FlipperZero gadgets in exchange for completing an offer. However, the website directs users to insecure browser extensions and fraudulent sites. The real Flipper Devices warns users to be cautious, as they have no affiliation with the fake site. The scam website is still active, so users have been advised to shop via a legitimate store and avoid falling victim to such campaigns.

Related Threat Briefings

Feb 4, 2025

Cyware Daily Threat Intelligence, February 04, 2025

Cybercriminals are finding new ways to weaponize everyday tools, and this time, they’re using TryCloudflare to hide their tracks. Researchers uncovered a phishing campaign that stealthily delivers AsyncRAT via Python scripting and cloud tunnels. The attack starts with a Dropbox link leading to a maze of scripts that ultimately drop a harmful payload. Even AI developers aren’t safe from deception. Threat actors have infiltrated PyPI with two malicious packages disguised as legitimate tools for DeepSeek. These fraudulent packages steal sensitive data, from user credentials to API keys, proving once again that trust in open-source repositories can be a double-edged sword. One small vulnerability, one massive risk. Russian cybercriminals exploited a zero-day in 7-Zip to deliver SmokeLoader in attacks on Ukrainian entities. By bypassing Windows Mark-of-the-Web protections, the attackers tricked victims into executing malware-laden files.

Feb 3, 2025

Cyware Daily Threat Intelligence, February 03, 2025

Cybercriminals are exploiting trust and social engineering at scale, preying on unsuspecting victims across industries. The Russian-speaking cybercrime gang Crazy Evil has been linked to over 10 social media scams, tricking users into installing malware like StealC and AMOS. Operating primarily through Telegram, the group specializes in identity fraud, cryptocurrency theft, and info-stealers. A wedding invitation should bring good news, not malware. Hackers in Malaysia and Brunei are targeting users with fake wedding invites spread via WhatsApp and Telegram, tricking them into installing a new Android malware called Tria. The campaign resembles UdangaSteal but focuses on new social engineering tactics. Even the tightest security can come undone with a race condition. Apple patched a critical vulnerability in macOS Sonoma, Sequoia, and iPadOS, which allowed hackers to escalate privileges and run code at the kernel level. Apple fixed the issue by improving memory management, but this serves as another reminder that even the most secure systems need constant vigilance.

Jan 31, 2025

Cyware Daily Threat Intelligence, January 31, 2025

Cybercriminals are sharpening their tactics, and Brazilian financial firms are the latest target. The Coyote banking trojan is on the prowl, using malicious Windows LNK files to execute PowerShell scripts that steal data and compromise systems. Meanwhile, a new browser-based threat is emerging—syncjacking. This attack exploits malicious extensions to hijack browsers, disable security settings, and access stored credentials. In its final stage, attackers gain full control of devices, including cameras and audio, without detection. Speaking of hidden threats, users of Microsoft Ads are being tricked by fraudulent Google ads leading to phishing pages designed to steal their login credentials. This campaign has persisted for two years, slipping past security filters and mimicking Microsoft’s login process with deceptive precision. For detailed Cyber Threat Intel, click ‘Read More’.

Jan 29, 2025

Cyware Daily Threat Intelligence, January 29, 2025

Cybercriminals are refining their tactics, blending deception with persistence to breach defenses. A financially motivated threat actor has been running a phishing email campaign since last year, targeting users in Poland and Germany. The attacks use payloads like Agent Tesla, Snake Keylogger, and a new backdoor named TorNet. Zyxel CPE Series devices are under siege as researchers uncover an actively exploited zero-day vulnerability. This flaw allows attackers to execute remote commands, potentially leading to system takeovers, data loss, and network intrusions. The attacks, originating primarily from Taiwan, have compromised over 1,500 devices, sparking urgent calls for users to apply security updates. Phishing scams continue to evolve, with a new campaign exploiting PDF documents to steal Amazon Prime credentials. Victims receive emails warning of an expired membership, leading them to a fake Amazon login page where they unknowingly hand over personal and credit card information.

Jan 28, 2025

Cyware Daily Threat Intelligence, January 28, 2025

Even the sleekest systems have their cracks. Apple has patched a critical CoreMedia vulnerability that hackers have already exploited to target devices. The flaw, which impacts how audio and video are processed, had been actively used against earlier versions of iOS prior to iOS 17.2. Apple’s fix is now available for iPhones XS and later, select iPads, and the company’s latest hardware. Security shouldn’t feel like Swiss cheese. Yet, SonicWall’s SMA1000 appliances are under siege, with attackers exploiting a critical vulnerability to install malware without requiring credentials. Despite a patch being available, over 5,000 devices remain exposed, allowing hackers to hijack SSL VPN sessions remotely. Think twice before clicking on that delivery notification. Phishers posing as USPS are sending fraudulent SMS messages claiming a package couldn’t be delivered due to “incomplete address information.” With over 630 phishing pages spanning 50 countries, the campaign targets unsuspecting individuals at an alarming scale. In today’s digital landscape, not all deliveries are worth opening - especially the fraudulent ones.

Jan 27, 2025

Cyware Daily Threat Intelligence, January 27, 2025

Once again proving there’s no honor among thieves, hackers were found preying on script kiddies via a trojanized XWorm RAT builder, compromising over 18,000 devices globally. The fake builder allowed operators to steal data and issue commands through a Telegram-based C2. LTE and 5G networks face a critical challenge as researchers uncover 119 vulnerabilities that could disrupt services or breach core networks. These flaws, linked to buffer overflows and memory corruption, leave mobile users exposed to potential monitoring and targeted attacks. A deceptive malware campaign leverages fake CAPTCHA pages and clipboard hijacking to spread Lumma Stealer across industries in multiple regions. The malware uses advanced evasion tactics to outmaneuver security defenses while stealing sensitive data.

Jan 24, 2025

Cyware Daily Threat Intelligence, January 24, 2025

Hackers are crafting convincing traps by mimicking trusted platforms. Nearly 1,000 fake web pages imitating Reddit and WeTransfer are being used to distribute Lumma Stealer. Fraudsters fake Reddit discussions and provide malicious WeTransfer links, creating an illusion of authenticity. Juniper edge devices are under attack by J-magic, a stealthy malware that activates only when it detects a specific magic packet. Targeting multiple industries J-magic’s reverse shell remains dormant until triggered, enabling covert communications. A flaw in Cloudflare's CDN exposes users’ locations via images sent through apps like Signal and Discord. By exploiting this vulnerability, attackers can pinpoint a target’s location within a 250-mile radius, leveraging Cloudflare's caching system to silently gather data.

Jan 23, 2025

Cyware Daily Threat Intelligence, January 23, 2025

Cybercriminals are finding new ways to exploit the cloud. The financially driven TRIPLESTRENGTH group has been targeting platforms like Google Cloud and AWS for cryptojacking and ransomware, often leveraging stolen credentials from malware infections. The QakBot loader has a new ally: BackConnect (BC) malware. Researchers uncovered its use in tandem with tools like DarkVNC and KeyHole, bolstering system data theft and remote access capabilities. This innovation is linked to Storm-1811 and the deployment of Black Basta ransomware. AIRASHI, an AISURU botnet variant, has been exploiting zero-day vulnerabilities in Cambium Networks cnPilot routers to deliver DDoS attacks reaching up to 3 Tbps. Its operators flaunt their capabilities on Telegram, with compromised devices found across the globe.

Jan 22, 2025

Cyware Daily Threat Intelligence, January 22, 2025

A covert supply chain attack compromised a South Korean VPN provider, with the China-linked APT group PlushDaemon embedding its SlowStepper backdoor into a malicious installer. Active since 2019, this espionage campaign leverages a sophisticated toolkit, hijacked app updates, and server vulnerabilities to target victims across multiple nations. The Murdoc botnet has emerged as a formidable threat, exploiting vulnerabilities in AVTECH IP cameras and Huawei routers to infect over 1,370 systems in Southeast Asia and Latin America. With its roots in Mirai, this botnet uses shell scripts tailored to IoT architectures, aiming to power massive DDoS campaigns. Oracle’s latest Critical Patch Update addresses 318 vulnerabilities, including a severe flaw in its Agile Framework. With critical risks spanning products like JD Edwards and Communications Routers, organizations are urged to update immediately to mitigate the danger of exploitation.

Jan 21, 2025

Cyware Daily Threat Intelligence, January 21, 2025

From malware campaigns targeting critical infrastructure to vulnerabilities in core networking protocols, threat actors are exploiting trust and technical gaps to infiltrate systems. The MintsLoader campaign targets sectors like energy and law with the StealC malware and the BOINC client, masking malicious actions as legitimate. Meanwhile, the DoNot APT group is using the new Tanzeem Android malware to spy on South Asian government and military entities. Flaws in tunneling protocols put millions of systems at risk of DoS attacks and unauthorized network access, underscoring the need for stronger configurations. Meanwhile, attackers are impersonating CERT-UA using AnyDesk to infiltrate Ukrainian systems under the pretense of a “security audit.” For detailed Cyber Threat Intel, click ‘Read More’.

Jan 20, 2025

Cyware Daily Threat Intelligence, January 20, 2025

In today’s evolving cyber landscape, even natural disasters are becoming fertile ground for exploitation by bad actors. Southern California’s raging wildfires have ignited a parallel wave of phishing scams targeting affected individuals and businesses. Fraudsters are leveraging themes of relief and recovery to propagate bogus donation requests, fake insurance claims, and cryptocurrency fraud schemes. Elsewhere, PHP-based web servers in Indonesia are being hijacked to promote online gambling platforms. Targeting servers running Moodle LMS, attackers are installing rogue plugins, stealing credentials, and deploying Python-based bots to propagate the attack. Meanwhile, a critical flaw in Moxa’s EDS-508A Series Ethernet switches has been patched, addressing vulnerabilities that could grant unauthorized access and disrupt operations. Admins are urged to apply the security patch immediately. For detailed Cyber Threat Intel, click ‘Read More’.

Jan 16, 2025

Cyware Daily Threat Intelligence, January 16, 2025

Threat actors continue to exploit misconfigurations and vulnerabilities to spread malware and disrupt systems. A newly discovered MikroTik botnet of 13,000 devices abuses SPF DNS flaws to spoof 20,000 domains, bypassing email security and delivering malware via fake DHL-themed emails. At the same time, adversaries are embedding rogue code in image files to spread VIP Keylogger and 0bj3ctivity Stealer, leveraging phishing emails and Base64-encoded payloads to compromise systems. The CERT/CC warned of newly discovered vulnerabilities affecting over 660,000 Rsync servers. Among the six identified flaws, two—CVE-2024-12084 and CVE-2024-12085—allow remote code execution when combined. Cybercriminals are also weaponizing Google Search ads to steal Google Ads credentials. By directing users to phishing pages hosted on Google Sites, attackers can disguise their schemes under the guise of legitimate Google Ads pages.