Cyware Daily Threat Intelligence

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Daily Threat Briefing • May 24, 2022

A Chrome extension with video-capturing capabilities poses threat to tens of millions of users due to a flaw using which a hacker can secretly turn on their systems’ camera. The patch released for it earlier in February didn’t seem to fix the issue. Meanwhile, millions of others fell victim to cyberattack incidents at General Motors and MGM Resorts International.

Security analysts spotted two new ransomware variants for Nokoyawa and Chaos ransomware, in two separate reports. The former is relying on publicly available sources to augment performance, whereas the latter has broadened its gamut for file encryption.

Top Breaches Reported in the Last 24 Hours

Credential stuffing at GM

U.S. automobile giant General Motors confirmed suffering a credential stuffing attack last month that impacted its customer information. Further, the hackers were able to redeem gift card reward points. The firm has advised victims to review their credit reports and initiate a security freeze if they see some irregularities.

Zola accounts compromised

A hacker group infiltrated the networks of the wedding planning website Zola through a credential stuffing attack to access the user accounts. They attempted to initiate fraudulent cash transfers. According to reports, Zola does not currently offer two-factor authentication (2FA) for its users.

MGM Resorts Customers’ PII on Telegram

vpnMentor has reported that approximately 142 million records of customers of MGM Resorts International were leaked on Telegram in four storage files. The dumps include personal data such as names, postal addresses, phone numbers, email addresses, and dates of birth of millions of people. Hackers claimed the leak encompasses at least 30 million people.

Top Malware Reported in the Last 24 Hours

New Nokoyawa ransomware variant

Fortinet has observed a new variant of Nokoyawa ransomware targeting Windows users. Researchers confirm that it is reusing code from publicly available sources to become more effective. The samples from April contained three new features to maximize the encryption of files. Besides, the latest variant deletes volume snapshots by resizing the allocated space for snapshots of volume shadow copies to one byte.

Scope of encryption widens with Chaos 4.0

The BlackBerry team has discovered the latest version of the Chaos ransomware dubbed Yashma. Since its discovery in June 2021, Chaos has undergone five successive iterations for improving its functionalities. The variant, also known as Chaos 4.0, has expanded its upper limit of files to encrypt to 2.1MB.

Top Vulnerabilities Reported in the Last 24 Hours

XSS flaw cripples Screencastify

Screencastify is a popular Chrome extension meant to capture and share videos from websites. The extension was found containing a bug that can trigger cross-site scripting attacks. This can cause an arbitrary website to turn on users’ webcams without their knowledge. Although this flaw was reported and patched in February, it doesn’t properly ensure the security of over 10 million users.

Yik Yak’s long-awaited patch

Anonymous social network platform Yik Yak delivered a patch for a vulnerability reported by two researchers independently in a month’s gap. The vulnerability made it possible for a stalker to locate a user’s home address by intercepting HTTP requests from the client using the open-source Mitmproxy tool.

Top Scams Reported in the Last 24 Hours

Physical abuse scam on dating apps

Bleeping Computer highlighted that scammers are now acting as former victims of physical abuse on dating apps like Tinder and Grindr. By doing so, they tend to gain a potential target’s trust and sympathy and pitch fraudulent ID verification services. This may land the victim on a fake site where they are asked to pay a nominal fee for signing up for an account.

New Threat in Spotlight

Pre-hijacking of accounts

A researcher from Microsoft Security Response Center and an independent researcher warned that cybercriminals are abusing vulnerabilities that were already fixed for platforms like Instagram, LinkedIn, Zoom, WordPress, and Dropbox. These bugs can be exploited to hijack the online accounts of users even before they create or register them.

Related Threat Briefings

Mar 25, 2025

Cyware Daily Threat Intelligence, March 25, 2025

A stealthy browser extension called Rilide has resurfaced with improved evasion capabilities and support for Chrome’s latest extension framework. Disguised as a utility for Google Drive, it quietly collects data, particularly those tied to cryptocurrency wallets. Ongoing campaigns have used lures ranging from fake PowerPoint documents to spoofed Twitter notifications, all aimed at embedding the extension into Chromium-based browsers. On GitHub, a seemingly innocent coding challenge is being used as a delivery mechanism for malware. A malicious repository targets Polish-speaking developers and installs FogDoor, a backdoor capable of data theft, remote command execution, and persistence. The campaign uses clever techniques, while quietly harvesting sensitive information. Kubernetes environments are facing serious risk after the discovery of IngressNightmare - a collection of five critical flaws in the Ingress NGINX Controller. These bugs open the door to unauthenticated remote code execution and expose thousands of clusters to full compromise. In the wrong hands, this vulnerability could allow attackers to exfiltrate secrets across all namespaces, effectively granting full control over affected clusters.

Mar 24, 2025

Cyware Daily Threat Intelligence, March 24, 2025

A newly surfaced threat actor, UAT-5918, has been quietly embedding itself into Taiwan’s critical infrastructure since 2023. With a focus on information theft, the group has been targeting multiple sectors using a mix of off-the-shelf tools and stealthy web shells. The threat actor also boasts of an extensive toolkit. Meanwhile, the Medusa ransomware operation is refining its ability to bypass defenses using a malicious driver disguised as a legitimate security component. Dubbed ABYSSWORKER, the driver is signed with compromised certificates. Once deployed, it disables anti-malware tools and clears the path for ransomware delivery through a loader. On the plugin front, a critical vulnerability in WP Ghost has put thousands of WordPress sites at risk. If certain non-default settings are enabled, the bug can be used to load arbitrary files - opening the door to remote code execution. Though a patch has been issued in version 5.4.02, the exposure window combined with the plugin’s wide install base makes this a notable concern for site admins still lagging on updates.

Mar 21, 2025

Cyware Daily Threat Intelligence, March 21, 2025

A stealthy cyber campaign briefly surfaced before vanishing. Researchers uncovered a public web server tied to a campaign targeting South Korean entities, hosting a Rust-based payload delivering Cobalt Strike Cat alongside open-source hacking tools. The infrastructure disappeared within 24 hours but revealed a target list of over 1,000 Korean domains. A backup tool vulnerability is now a fast track for attackers. CISA issued a warning for a path traversal flaw in Nakivo Backup and Replication, which is being actively exploited to execute code remotely and access sensitive enterprise data. The vulnerability has also been added to the KEV catalog. Fake ads are turning Semrush into phishing bait. A malicious ad campaign is tricking users into visiting fraudulent Semrush login pages, stealing Google credentials by forcing victims to use the “Log in with Google” option on spoofed pages.

Mar 20, 2025

Cyware Daily Threat Intelligence, March 20, 2025

Cybercriminals don’t just break in; they move in and redecorate. The DollyWay malware campaign, active since 2016, has now compromised over 20,000 WordPress sites, according to GoDaddy. By February 2025, it was redirecting 10 million users each month to scam sites. Originally a ransomware operation, it has evolved into a redirection scam using the VexTrio and LosPollos affiliate networks. Hackers have found a new disguise for malware—virtual hard disk files. Threat actors are distributing VenomRAT through phishing emails with .VHD files masked as purchase orders. These files help the malware evade detection while a hidden batch script self-replicates, maintains PowerShell persistence, and steals data using HVNC and Pastebin-based C2 communication. Meanwhile, a year-old sophisticated phishing campaign has shifted gears. After successfully tricking Windows users with fake Microsoft security alerts on windows[.]net, attackers are now targeting macOS users. For detailed Cyber Threat Intel, click ‘Read More’.

Mar 19, 2025

Cyware Daily Threat Intelligence, March 19, 2025

Cyber threats are increasingly targeting sensitive industries and posing national security concerns. Ukraine’s CERT-UA has raised alarms about a wave of cyberattacks leveraging the DarkCrystal RAT to target defense industry professionals and military entities. The attackers are using Signal messenger to send phishing messages disguised as trusted contacts, luring victims into opening a fake PDF file containing a malware dropper. When even your AI assistant can be tricked into working for hackers, the stakes couldn’t be higher. Security researchers have uncovered a supply chain attack known as the 'Rules File backdoor,' which compromises AI-powered code editors like GitHub Copilot and Cursor. Meanwhile, in the healthcare sector, PoC exploits have surfaced for vulnerabilities in Sante PACS servers. These flaws, including CVE-2025-2263 through CVE-2025-2284, could enable unauthorized data access and system disruption. For detailed Cyber Threat Intel, click ‘Read More’.

Mar 18, 2025

Cyware Daily Threat Intelligence, March 18, 2025

Cybercriminals are getting craftier, with Microsoft uncovering StilachiRAT, a stealthy malware that steals crypto, spies on systems, and evades detection. It targets digital wallets, browser data, and RDP sessions while maintaining persistence through Windows services. Meanwhile, a year-old SSRF flaw in ChatGPT (CVE-2024-27564) is under active exploitation, with over 10,000 attack attempts in a week, mainly targeting US financial and government entities. Phishers are now exploiting Microsoft 365 infrastructure in a BEC campaign, tricking users with fake support notifications and fraudulent call centers. Attackers collect credentials and take over accounts while avoiding detection. As AI vulnerabilities, RATs, and phishing tactics evolve, businesses must stay ahead to protect sensitive data. For detailed Cyber Threat Intel, click ‘Read More’.

Mar 17, 2025

Cyware Daily Threat Intelligence, March 17, 2025

The Black Basta gang has cooked up a relentless new tool. Its automated brute-forcing framework has been relentlessly probing edge networking devices since 2023, zeroing in on widely used edge networking devices. Something sinister was brewing in the PyPI repository. Multiple fraudulent packages racked up tens of thousands of downloads and hid a nasty secret: code designed to siphon cloud access tokens. However, the packages have been removed. Coinbase users are getting hit with a scam that’s all polish and bad intentions. Dressed up as an official notice about a court-ordered shift to self-custodial wallets, it nudges recipients to set up a new wallet with a recovery phrase - except it’s a trap, pre-controlled by the attackers.

Mar 14, 2025

Cyware Daily Threat Intelligence, March 14, 2025

A new ransomware group is making waves with tactics reminiscent of LockBit. Mora_001 has been exploiting Fortinet vulnerabilities to gain access to networks. Subsequently, it deploys its SuperBlack ransomware, ensuring persistent control before encrypting critical systems. GitLab users should patch now as critical authentication flaws surface. Two newly discovered GitLab vulnerabilities could allow attackers to impersonate users, potentially leading to data breaches and privilege escalation. Security updates have been released to mitigate the risk. Cybercriminals are faking Clop ransomware attacks to scam businesses. Fraudsters are posing as the Clop ransomware gang, fabricating extortion claims to trick victims into paying ransoms for non-existent data breaches.

Mar 13, 2025

Cyware Daily Threat Intelligence, March 13, 2025

A new spyware is lurking in fake apps, and it’s tied to North Korea. KoSpy, a newly discovered Android surveillance tool, is believed to be the work of APT37 and has been targeting Korean and English-speaking users. Distributed via Google Play Store and Firebase Firestore, the spyware could access a plethora of information. Juniper routers are being turned into stealthy backdoors. The Chinese threat group UNC3886 has infiltrated older Juniper MX routers, deploying customized TinyShell backdoors to evade detection. By accessing devices via terminal servers with legitimate credentials, the attackers bypassed Junos OS security protections, allowing persistent access to compromised networks. A widely used font library is now a security risk. Facebook has warned of a critical flaw in FreeType. The bug, caused by an out-of-bounds write, can lead to arbitrary code execution and has been exploited in attacks.

Mar 12, 2025

Cyware Daily Threat Intelligence, March 12, 2025

Copy, paste, and lose everything - MassJacker turns a simple action into a costly mistake. The operation leverages 778,000 fraudulent wallet addresses to siphon digital assets from unsuspecting victims. It has targeted victims by replacing copied cryptocurrency wallet addresses with those controlled by attackers. Exploited in the wild and patched just in time. Microsoft has released security updates fixing 57 vulnerabilities, including six zero-days actively exploited by attackers. The update also addresses 17 Edge browser vulnerabilities, reinforcing the critical need for immediate patching before these flaws can be leveraged for malicious purposes. A botnet is turning home routers into attack platforms, and there’s still no fix in sight. The Ballista botnet is actively exploiting a remote code execution flaw in TP-Link Archer routers, allowing attackers to inject commands without authentication. With thousands of compromised devices and growing, the botnet uses Tor domains for stealth and has been traced back to an Italian-based threat actor.

Mar 11, 2025

Cyware Daily Threat Intelligence, March 11, 2025

A new ransomware strain isn’t just locking up files, it’s locking out hope of recovery. Researchers uncovered EByte Ransomware, a Golang-based malware that’s actively targeting Windows systems with advanced cryptographic techniques, making decryption nearly impossible without the attackers' key. A simple-looking PDF is all it takes for attackers to hijack your system. A new malware strain, Phantom Goblin, is being spread through RAR attachments in phishing campaigns, tricking users into opening a malicious LNK file disguised as a document. It also abuses VSCode tunnels for remote access. Attackers don’t need new tricks when unpatched systems do the job for them. The CISA has flagged five new vulnerabilities under active exploitation, affecting Advantive VeraCore and Ivanti Endpoint Manager. The VeraCore flaw exploitation is linked to a likely Vietnamese threat group, while the Ivanti EPM vulnerabilities allow attackers to coerce credentials for further access.

Mar 10, 2025

Cyware Daily Threat Intelligence, March 10, 2025

When cybercriminals upgrade their arsenal, staying hidden becomes easier than ever. Several ransomware and cybercrime groups are leveraging the Ragnar Loader malware toolkit to maintain long-term access to compromised systems. Constantly evolving with new features, Ragnar Loader has become more modular and harder to detect. A single flaw in a widely used API almost handed attackers full control over vulnerable applications. The Volt API for Livewire recently patched a critical remote code execution vulnerability. The issue has been fixed in version 1.7.0, and users are strongly urged to update to prevent exploitation. A billion devices, a hidden backdoor, and tens of undocumented commands that could change everything. Security researchers have uncovered a major issue in ESP32 revealing 29 undocumented commands that attackers could exploit for spoofing devices, unauthorized data access, and long-term persistence. This vulnerability raises concerns over supply chain security, as OEMs could unknowingly ship compromised devices.