VulnHub

The latest Security Affairs Malware newsletter covers several significant malware threats that have emerged recently. Notably, a group identified as Stan Ghouls is targeting users in Russia and Uzbekistan using the NetSupport Remote Access Trojan (RAT), which allows attackers to control infected systems remotely. Another concerning development is the discovery of ZeroDayRAT, a new spyware designed to infiltrate both Android and iOS devices. Additionally, researchers have uncovered a Linux botnet named SSHStalker, which utilizes old-school IRC methods to compromise new victims. These activities demonstrate the evolving tactics of cybercriminals and emphasize the need for users and organizations to remain vigilant against these persistent threats.

Researchers have identified a new spyware kit called ZeroDayRAT, which is being distributed via Telegram. This toolkit is said to allow attackers to fully compromise both iOS and Android devices, functioning at a level typically associated with resources available to nation-states. The implications of this spyware are significant, as it can potentially give hackers complete access to personal data and device controls. Users of mobile devices, especially those who may be targeted for sensitive information, should be particularly cautious. The emergence of such advanced tools raises serious concerns about mobile security and privacy.

Bitdefender has identified a new Android malware campaign that uses Hugging Face, a platform typically associated with artificial intelligence and machine learning. This malware, classified as a Remote Access Trojan (RAT), is designed to gain unauthorized access to Android devices, potentially compromising user data and privacy. The campaign raises concerns as it exploits a legitimate platform to distribute malicious software, making it harder for users to detect the threat. Users of Android devices should be particularly cautious and ensure they download apps only from trusted sources to avoid falling victim to this malware. The implications are significant, especially for those who may unknowingly install infected applications, leading to data theft or device control by attackers.

ESET researchers have uncovered a spyware campaign targeting individuals in Pakistan that employs romance scam tactics. This operation uses a malicious app masquerading as a chat service, which facilitates conversations through WhatsApp but primarily serves to steal data from infected devices. The malware is identified as GhostChat, and it appears to be part of a larger surveillance effort by the same threat actor. This incident is particularly concerning as it exploits personal relationships and trust, potentially affecting many unsuspecting users who are seeking companionship online. The implications of such spyware are significant, as it not only compromises personal data but also raises issues of privacy and security in digital communications.

The Black Lotus Labs team at Lumen Technologies has taken significant action against the AISURU and Kimwolf botnets by null-routing over 550 command-and-control (C2) servers since early October 2025. These botnets have gained notoriety for their ability to commandeer devices and use them in distributed denial-of-service (DDoS) attacks. By cutting off access to these C2 nodes, researchers aim to disrupt the operations of these botnets, which primarily target Android devices. This move is crucial as it not only protects potential victims from being exploited but also highlights the ongoing battle against cybercriminals who leverage such networks for malicious activities. The impact of these botnets underscores the need for continued vigilance in cybersecurity practices, especially for users of vulnerable devices.

The Kimwolf Android botnet has expanded significantly, now comprising around 2 million devices. This botnet primarily targets residential proxy networks, allowing its operators to profit through various means, including launching Distributed Denial of Service (DDoS) attacks, installing applications without user consent, and selling proxy bandwidth. The growth of this botnet poses serious risks to users, as it can lead to unauthorized use of their devices and potential data breaches. It also raises concerns for internet service providers and businesses that may be targeted by DDoS attacks. The situation highlights the ongoing challenges in securing IoT devices and the need for users to be vigilant about their device security.

The Kimwolf Android botnet has been discovered infecting over 1.8 million devices, according to security researchers at XLab. This botnet, which is linked to the previously identified Aisuru botnet, has been responsible for sending more than 1.7 billion commands for Distributed Denial of Service (DDoS) attacks. The scale of these attacks is significant, raising concerns about the potential for disruption to various online services. The fact that millions of devices are compromised highlights the ongoing vulnerability of Android systems to malware. Users should be cautious and consider securing their devices to prevent further infections and attacks.

A new botnet named Kimwolf has compromised around 1.8 million Android-based devices, including TVs, set-top boxes, and tablets. Researchers from QiAnXin XLab report that this botnet may be linked to another one known as AISURU. Kimwolf is built using the Native Development Kit (NDK), which allows attackers to control these devices and use them for large-scale distributed denial-of-service (DDoS) attacks. This incident raises concerns about the security of smart devices, as many consumers may not realize their equipment can be hijacked in this way. Users of affected devices should be vigilant and consider measures to secure their systems against such threats.

Researchers at Zimperium zLabs have discovered a new Android malware called DroidLock, which behaves like ransomware. This malicious software can lock users out of their devices and steal sensitive information by tricking them into providing their credentials through phishing tactics. Additionally, DroidLock has the capability to stream users' screens and activate their front cameras through VNC, raising serious privacy concerns. This malware primarily targets Android users, making it essential for them to remain vigilant about their device security and be cautious of suspicious links or applications. The emergence of DroidLock emphasizes the ongoing risks associated with mobile malware and the need for users to adopt strong security practices.

GoldFactory, a financially motivated cybercriminal group, has launched new attacks targeting mobile users in Southeast Asia, specifically Indonesia, Thailand, and Vietnam. They are distributing modified banking applications that serve as conduits for Android malware, leading to over 11,000 infections since October 2024, posing significant risks to users' financial security.

Google has addressed 51 vulnerabilities in Android, including two high-severity flaws (CVE-2025-48633 and CVE-2025-48572) that are potentially under targeted exploitation. Both vulnerabilities impact the Android Framework, which is essential for app development, and could allow malicious applications to access sensitive information.