evasion techniques Archives

AppWizard

February 19, 2026

PromptSpy Android Malware Abuses Google Gemini to Automate Recent-Apps Persistence

Cybersecurity researchers have identified a new Android malware named PromptSpy that utilizes Google's Gemini AI chatbot to enhance its capabilities and persistence on infected devices. PromptSpy can capture lockscreen data, obstruct uninstallation, gather device information, take screenshots, and record screen activity. It integrates Gemini to analyze the current screen and provide instructions to keep the malware active in the recent apps list. The malware uses a hard-coded AI model and communicates with a command-and-control server via the VNC protocol, allowing remote access to the victim's device. It is financially motivated, targeting users in Argentina, and was developed in a Chinese-speaking environment. PromptSpy is distributed through a dedicated website and is considered an advanced version of a previously unidentified malware called VNCSpy.

Tech Optimizer

February 1, 2026

When Digital Guardians Turn Rogue: Inside the eScaneS an Antivirus Supply Chain Attack That Exposed Millions

eScan, an antivirus solution, has become a conduit for a supply chain attack that may have affected millions of users through a compromised software update mechanism. The attack exploited eScan’s automatic update system, distributing malware via official channels that appeared legitimate, thus bypassing traditional security measures. Reports indicate that supply chain attacks have increased by over 300% in the past three years, with software update mechanisms being prime targets. The exact number of affected users is still under investigation, but the breach occurred over a limited period before detection. Enterprises using eScan now face vulnerabilities in their security infrastructure, prompting IT departments to conduct forensic analyses to determine if their networks were compromised. The breach raises concerns about digital security as users typically rely on antivirus solutions for protection. Researchers found that the malware used advanced techniques, including multi-stage deployment and polymorphic behavior to evade detection, indicating significant resources behind the attack. In response, eScan has initiated an incident response protocol, revoked compromised digital certificates, and added verification layers to its update system. However, restoring user trust will require transparency about the breach and preventive measures. The incident has led to widespread security audits across the antivirus sector and may accelerate the adoption of zero-trust security models. Regulatory inquiries are underway regarding eScan's data protection practices, and legal experts anticipate class-action lawsuits from affected users and enterprises. The breach highlights a trend where attackers target security infrastructure itself, making software distribution security a critical focus for cybersecurity professionals. Proposed solutions include blockchain-based verification systems and industry-wide standards for supply chain security. The eScan breach underscores that no organization is immune to sophisticated supply chain attacks, as compromising a security vendor can provide access to its entire customer base. Increased information sharing about supply chain threats is advocated to enhance collaboration within the security industry. Moving forward, eScan must balance technical remediation with transparent communication to rebuild trust, while users are advised to implement defense-in-depth strategies rather than relying solely on one security tool.

Tech Optimizer

January 30, 2026

When Digital Guardians Turn Rogue: Inside the Avast Antivirus Supply Chain Attack That Exposed Millions

Avast's automatic update system was compromised, allowing malicious code to be distributed through its official channels, affecting potentially millions of users. This breach is characterized as a sophisticated supply chain attack, which exploited the software update mechanism, making it difficult to detect as the malware appeared legitimate. Security analysts noted a 300% increase in supply chain attacks over the past three years, with this incident highlighting vulnerabilities in security solutions. Avast has initiated an incident response, revoked compromised digital certificates, and is collaborating with cybersecurity firms to address the breach. European regulators have begun inquiries into Avast's data protection measures, and legal experts anticipate class-action lawsuits from affected users. The incident underscores a trend of attackers targeting security infrastructure itself, prompting calls for improved software distribution security and industry-wide standards.

Tech Optimizer

December 28, 2025

Threat Actors Advertised NtKiller Malware on Dark Web Claiming Terminate Antivirus and EDR Bypass

A malicious entity named AlphaGhoul has introduced a tool called NtKiller, designed to disable antivirus software and endpoint detection systems, posing a threat to organizations using traditional security measures. NtKiller was advertised on an underground forum, claiming to allow attackers to operate undetected while executing malware. It reportedly circumvents security programs like Microsoft Defender, ESET, Kaspersky, Bitdefender, and Trend Micro, and can bypass enterprise-grade Endpoint Detection and Response solutions in aggressive modes. Analysts from KrakenLabs noted that NtKiller uses early-boot persistence mechanisms to evade detection and operates on a modular pricing structure, with core functionality available for [openai_gpt model="gpt-4o-mini" prompt="Summarize the content and extract only the fact described in the text bellow. The summary shall NOT include a title, introduction and conclusion. Text: A malicious entity known as AlphaGhoul has recently surfaced within the cybercriminal underworld, promoting a tool dubbed NtKiller. This tool is engineered to discreetly disable antivirus software and endpoint detection systems, posing a new threat to organizations that rely on traditional security measures. NtKiller was unveiled on an underground forum frequented by individuals seeking to buy and sell hacking services. The advertisement claims that this tool enables attackers to operate undetected while executing their malware on compromised machines. The introduction of NtKiller signifies a formidable challenge for businesses that depend on established security solutions. According to the threat actor, the tool is capable of circumventing several widely-used security programs, including Microsoft Defender, ESET, Kaspersky, Bitdefender, and Trend Micro. Alarmingly, it is also said to bypass enterprise-grade Endpoint Detection and Response (EDR) solutions when utilized in aggressive modes. Analysts from KrakenLabs have observed that NtKiller employs early-boot persistence mechanisms, allowing it to remain concealed and evade detection by security teams once activated. This stealthy approach complicates efforts to identify and eliminate the malware. Further investigation by KrakenLabs revealed that NtKiller operates on a modular pricing structure. The core functionality is available for 0, with additional features such as rootkit capability and User Account Control (UAC) bypass each priced at an extra 0. This pricing model indicates that the tool has been meticulously crafted for commercial distribution within the cybercriminal ecosystem. Beyond merely terminating processes, NtKiller is purported to support advanced evasion techniques, including HVCI disabling, VBS manipulation, and memory integrity circumvention. Technical capabilities The technical features attributed to NtKiller render it particularly perilous in the hands of adept attackers. The tool's early-boot persistence mechanism allows it to embed itself during system startup, prior to the activation of many security monitoring systems. This timing advantage facilitates the execution of malicious payloads in an environment where detection capabilities are significantly diminished. Moreover, the anti-debugging and anti-analysis protections embedded within NtKiller hinder researchers and automated tools from scrutinizing the malware's behavior, resulting in a substantial knowledge gap regarding its true capabilities versus its promotional claims. Another critical feature is the silent UAC bypass option, which enables malware to acquire elevated system privileges without triggering standard Windows prompts that could alert users to suspicious activities. When combined with rootkit functionality, this allows attackers to maintain persistent access to compromised systems while remaining undetected by conventional security measures. It is essential to highlight that these capabilities have yet to be independently verified by third-party researchers, leaving the actual effectiveness of NtKiller uncertain. Organizations are urged to remain vigilant and ensure their security tools incorporate behavioral detection mechanisms that extend beyond signature-based identification to effectively combat such emerging threats. Follow us on Google News, LinkedIn, and X to Get More Instant Updates, Set CSN as a Preferred Source in Google." max_tokens="3500" temperature="0.3" top_p="1.0" best_of="1" presence_penalty="0.1" frequency_penalty="frequency_penalty"] and additional features priced at 0 each. The tool supports advanced evasion techniques, including HVCI disabling, VBS manipulation, and memory integrity circumvention. Its silent User Account Control bypass option allows malware to gain elevated privileges without alerting users. The effectiveness of NtKiller's capabilities has not been independently verified, prompting organizations to enhance their security measures beyond signature-based detection.

Winsage

November 18, 2025

Microsoft to integrate Sysmon directly into Windows 11, Server 2025

Microsoft will integrate Sysmon into Windows 11 and Windows Server 2025, eliminating the need for standalone deployment. Sysmon will allow users to utilize custom configuration files for event filtering, logging events in the Windows event log. It tracks events such as process creation, DNS queries, executable file creation, changes to the clipboard, and auto-backup of deleted files. Users can access Sysmon through "Optional features" in Windows 11 and receive updates via Windows Update. Key events logged by Sysmon include process creation, network connections, process access, file creation, process tampering, and WMI events. Comprehensive documentation and new enterprise management features will be released next year.

Tech Optimizer

November 17, 2025

Dragon Breath Uses RONINGLOADER to Disable Security Tools and Deploy Gh0st RAT

The threat actor Dragon Breath, also known as APT-Q-27 and Golden Eye, has been observed using a multi-stage loader called RONINGLOADER to deploy a modified variant of the remote access trojan Gh0st RAT, primarily targeting Chinese-speaking users. The campaign employs trojanized NSIS installers disguised as legitimate applications, such as Google Chrome and Microsoft Teams. The infection chain utilizes various evasion techniques, including a legitimately signed driver, custom Windows Defender Application Control policies, and manipulation of the Microsoft Defender binary. RONINGLOADER's attack chain involves delivering a DLL and an encrypted file labeled "tp.png," which contains shellcode. It attempts to neutralize security products by terminating processes associated with popular antivirus solutions in the region. Specific actions are taken against Qihoo 360 Total Security, including blocking network communication, injecting shellcode into the Volume Shadow Copy service, and restoring firewall settings. For other security processes, RONINGLOADER directly writes a driver to disk to perform process termination. The malware aims to inject a rogue DLL into "regsvr32.exe" to conceal its activities and launch a next-stage payload into high-privilege system processes. The final payload is a modified version of Gh0st RAT, capable of communicating with a remote server, configuring Windows Registry keys, clearing Windows Event logs, and capturing keystrokes and clipboard contents. Additionally, two interconnected malware campaigns identified by Palo Alto Networks Unit 42 employed brand impersonation to deliver Gh0st RAT to Chinese-speaking users. The first campaign, Campaign Trio, occurred between February and March 2025, while the second, Campaign Chorus, detected in May 2025, impersonated over 40 applications. Both campaigns utilized complex infection chains and trojanized installers hosted on domains that circumvented network filters. The second campaign also involved an embedded Visual Basic Script for launching the final payload through DLL side-loading.

Tech Optimizer

November 17, 2025

EVALUSION Campaign Using ClickFix Technique to deploy Amatera Stealer and NetSupport RAT

In November 2025, a sophisticated malware campaign emerged, combining social engineering with advanced data theft tools. The attack begins with a tactic called ClickFix, where users are tricked into executing commands in the Windows Run window, leading to the installation of Amatera Stealer, which extracts sensitive information from browsers, cryptocurrency wallets, and password managers. Following this, attackers deploy NetSupport RAT for remote access to the compromised computer. Amatera Stealer employs advanced evasion techniques, including obfuscated PowerShell code and XOR encryption to mislead security efforts. It was originally marketed as ACR Stealer by a group named SheldIO. The infection process starts with a .NET-based downloader that retrieves payloads encrypted with RC2 from platforms like MediaFire. This downloader is packed with Agile.net, complicating analysis for cybersecurity teams. The malware disables AMSI by overwriting the "AmsiScanBuffer" string in memory, neutralizing Windows' security scanning. Amatera communicates with command servers through encrypted channels, using AES-256-CBC for traffic encryption, making inspection difficult. It aggregates stolen data into zip files and sends them to criminal servers, selectively executing additional payloads targeting high-value assets.

Tech Optimizer

November 15, 2025

RONINGLOADER Weaponizes Signed Drivers to Disable Defender and Evade EDR Tools

A new malware called RONINGLOADER specifically targets Chinese users and can disable security tools. It operates as a multi-stage loader that spreads a modified version of gh0st RAT and bypasses antivirus protections. RONINGLOADER infiltrates systems through fake software installers that mimic legitimate applications like Google Chrome and Microsoft Teams. Once inside, it disables Windows Defender and Chinese security solutions such as Qihoo 360 Total Security and Huorong. The malware uses a signed driver that appears legitimate to Windows but is designed to terminate security processes. If one method of disabling security fails, RONINGLOADER has multiple fallback strategies. The Dragon Breath APT group is behind this campaign, having refined their techniques based on previous operations. The infection begins with a trojanized NSIS installer that drops components onto the victim's system. One installer deploys genuine software, while the other initiates the attack chain. RONINGLOADER creates a directory at C:Program FilesSnieoatwtregoable and deposits two files: Snieoatwtregoable.dll and an encrypted file named tp.png. The DLL decrypts tp.png using XOR encryption and a rotation operation, then loads new system libraries to eliminate security hooks. It elevates privileges using the runas command and scans for active security software, specifically targeting Microsoft Defender, Kingsoft Internet Security, Tencent PC Manager, and Qihoo 360 Total Security. To terminate these processes, it uses a signed driver named ollama.sys, which is digitally signed by Kunming Wuqi E-commerce Co., Ltd. This driver can terminate processes using kernel-level APIs that standard security tools cannot intercept. Additionally, RONINGLOADER blocks network connections for Qihoo 360 before injecting code into the Volume Shadow Copy service process, utilizing Windows thread pools with file write triggers to evade detection.

Tech Optimizer

October 17, 2025

Android Spyware Threats Surge 147% in 2025: Protect Your Device Now

Android users are facing sophisticated spyware threats, specifically two strains known as ProSpy and ToSpy, which disguise themselves as legitimate applications like updates for Signal and ToTok. These malware types evade detection and steal sensitive information such as messages, contacts, and location data by requesting innocuous permissions. In 2025, spyware detections increased by 147%, with attackers mimicking financial tools and system updates. Google plans to implement a policy requiring app registration to verified developers in 2026 to combat these threats. Experts recommend downloading apps only from the Google Play Store, enabling Play Protect, and using reputable antivirus software. Vigilance against unofficial sources is crucial for protecting personal and professional data. New threats like ClayRat are emerging, further complicating the security landscape.

Tech Optimizer

October 10, 2025

From infostealer to full RAT: dissecting the PureRAT attack chain

An investigation revealed that a Python-based infostealer campaign led to the deployment of PureRAT, a sophisticated remote access trojan (RAT). The campaign began with a phishing email containing a ZIP archive that included a legitimate PDF reader executable and a malicious DLL. The DLL executed a series of payloads, including a Python info-stealer that harvested sensitive data and exfiltrated it via the Telegram API. The attack progressed to a .NET executable, which employed techniques like process hollowing and evasion tactics to load additional payloads. The final payload, Mhgljosy.dll, was identified as PureRAT, which established an encrypted command-and-control (C2) channel and allowed for extensive control over the compromised host. The C2 server was traced to Vietnam, suggesting a connection to the PXA group. The malware's functionality included host fingerprinting, command execution, and potential access to sensitive information and resources. Indicators of compromise included specific file hashes, registry keys, and IP addresses associated with the C2 server.