Based on the principles of transparency, accessibility, usability, verifiability and perceptibility of security capabilities, Antiy releases weekly updates of the AVL SDK anti-virus engine and the full set of capabilities to the public every week.

1.Weekly Update                           

Statistical period: August 15, 2026 ~ August 21, 2026

Antiy AVL SDK anti-virus engine released a total of 84 virus database updates this week, with an average of 12 updates per day, adding 25 new detectable malicious code families, 11,751 new detectable malicious code variants, and 36,604 new detection rules.

The following table shows the TOP5 newly detectable malicious code families:

Number	Virus Name	Virus Description
1	Trojan/Win32.RmmProject	This family of malware is a type of Trojan virus that spreads primarily through phishing emails, malicious download links, or bundled with software. Once it infects a user’s computer, it hides itself and steals sensitive user information—such as account credentials and bank card details—thereby compromising user privacy and security.
2	Trojan/Win64.RedTigerStealer	This family of malware is a type of Trojan virus that gains access to victims’ computer systems by deceiving users or by carrying other malware. Once infected, it runs in the background and covertly steals sensitive information, monitors user activity, and sends data to a remote server.
3	Trojan/Win32.HdaRAT[Backdoor]	This family of malware is a type of Trojan virus that primarily spreads and infects systems by exploiting security vulnerabilities. The virus tricks users into downloading and running it by disguising itself as legitimate software or by hiding within cracked or pirated software, and then steals users’ sensitive information, including important data such as bank account details, passwords, and personal identification information.
4	Trojan/Win32.CryptoX[Ransom]	This family of malware is a type of Trojan virus that typically spreads through phishing emails, malicious downloads, or exploits. Once infected, the malware encrypts the user’s files and demands a ransom in exchange for the decryption key, posing a serious threat to computer systems.
5	Trojan/Java.WebShell[Backdoor]	This family is a type of Trojan virus. The malware is a Java WebShell backdoor customized for the Clop ransomware group. After successfully exploiting a vulnerability, it can steal sensitive credentials, enumerate file repositories and project data, covertly transmit data, and execute extended malicious code in memory, thereby enabling data theft, lateral movement, persistence, and subsequent ransomware attacks.

(According to the HASH number of family samples within the period)

For more related content, please visit virusview.net

2. Full Detection Capabilities

As of 24:00 on August 22, 2026, the AVL SDK anti-virus engine can detect malware variants of malware families distributed in 8 basic categories, with a total of detection rules.

The detection capabilities and the number of rules classified by malicious code are as follows:

Type	Detectable Malicious Code (Types)	Detection Rules (Items)
Infectious viruses	59,759	6,842,013
Worms	316,131	3,961,126
Trojans	13,607,586	25,988,033
Hacking tools	459,588	369,695
Risk tools	1,207,902	2,265,035
Rogue software	3,016,537	3,041,633
Junk files	11	1,084
Test programs (for self-test)	28	112
Total	18,667,542	42,468,731

Preprocessing Capabilities (partial) :

There are 31 types of shells that can be unpacked (accurate to the type), and 132 packages that can be disassembled, including all common packages and self-extracting packages.

Supporting Knowledge Output Capabilities:

For malware payloads, the integrated AVL SDK malware knowledge base encompasses 533 key behavioral patterns of ATT&CK, covering 171 ATT&CK technical tags with a coverage rate of 64.29%, basically covering all the statically detectable tags in the ATT&CK framework.

3. Be on Guard Against These Virus Families This Week

Be on alert this week for large-scale attacks by the Clop ransomware group targeting PTC Windchill systems. Attackers exploit high-severity vulnerabilities in Windchill to compromise systems exposed to the public internet, where they deploy custom-built malware to steal system account credentials, engineering files, and other sensitive business data, thereby paving the way for subsequent lateral movement and extortion. These attacks primarily affect enterprises and organizations that use PTC Windchill for product lifecycle management, engineering design, and data storage. If a system is compromised, it could result in the leakage of core business data, the theft of account credentials, and the risk of further intrusions into internal networks.

Appendix: Introduction to Antiy AVL SDK Anti-Virus Engine

Antiy AVL SDK anti-virus engine is a threat detection capability middleware developed by Antiy for all architectures and system platforms. By embedding the AVL SDK, Antiy products and ecosystem partners’ products can acquire virus and malicious code detection capabilities, and receive continuous updates through the virus database.

For eight malicious code categories including infectious viruses, worms, Trojans, hacking tools, gray software, risky software, junk files, and test files, it accurately identifies and detects over 50,000 families and 18 million malicious code variants. The detection capability fully covers all known malicious codes and strictly adheres to the CARO convention. The output is structured and named in sections by classification, environment, and family, and based on the behavioral capabilities of malicious samples, it outputs nearly a hundred types of malicious behavior tags for typical malicious behaviors such as encryption ransomware, data theft, remote control, botnet programs, and mining. Antiy Engine can recognize over 300 file formats and conduct in-depth preprocessing on compilable executable formats such as PE and ELF. It also performs recursive unpacking of various packages (including self-extracting archives), and conduct structural analysis of compound documents such as OFFICE and ACAD files that may contain embedded scripts or vulnerability-prone formats. This ensures high robustness against malicious code. Antiy Engine also comes with a trusted file signature library, supporting the product to implement security policies based on blacklist and whitelist controls, significantly enhancing the difficulty for attackers.

Antiy’s detection capabilities can be fully deployed locally. Antiy automatically analyzes and processes over 2 million new file objects on average every day and releases a virus database update every two hours. It also provides support services such as cloud detection, cloud analysis, and computer virus encyclopedia.

Antiy AVL SDK is available in various versions such as traditional PC hosts, smart terminals, network traffic, IT application innovation systems, industrial systems, and unmanned systems. It provides threat detection capabilities for scenarios including host system and workload security, network traffic security, business flow security, email and file service security, etc. It fully supports various architectures such as X86, ARM, MIPS (including Cavium), RISC, and PowerPC, supports a variety of mainstream operating systems including domestic operating systems, Linux, and Windows, as well as real-time industrial operating systems like Vxwork. It also supports high-speed detection in backbone network scenarios.

Antiy AVL SDK empowers over 100 industry partners. In addition to Antiy’s own product deployment, Antiy Engine has cumulatively covered more than 4 billion nodes (including mobile terminals, secure and controllable PC endpoints, cloud-native nodes, network devices, network security devices, etc.), providing inherent security detection capabilities for mobile phones and smart terminals. The main partners using Antiy Engine include mobile phone enterprises such as Huawei, Xiaomi, Honor, VIVO and OPPO, large Internet enterprises such as Ant Financial, and several listed cybersecurity companies. Partner products using Antiy Engine have won internationally renowned evaluation awards such as AV-TEST and NSS Labs. The “L Tomahawk” logo of AVL SDK has become a symbol of reliable anti-virus capabilities.

All of Antiy’s products, including but not limited to IEP security protection system product family, Unified Workload Protect, Persistent Threat Detection System (PTD), Persistent Threat Analysis System (PTA), Attack Capture System, Qingzhu Zhiyu WAF, etc., all use Antiy anti-virus engine.

The AVL SDK anti-virus engine has been under development since 2001 and has undergone significant version upgrades and iterations. It has successively received support from key national initiatives, including: the Ministry of Science and Technology’s Innovation Fund for Technology-based Firms (2004), the Ministry of Science and Technology’s National High-Tech R&D Program (863 Program) (2006), the National Development and Reform Commission’s Information Security Special Project (2008), and the Ministry of Industry and Information Technology’s Engineering Special Project (2019). The mobile version of AVL SDK won the 2014 AV-TEST Best Protection Award for Mobile Devices. Products powered by the AVL SDK, Antiy PTD and PTA, won first place in both the first and second National Cybersecurity Technology Challenge competitions hosted by the National Computer Network Emergency Response Technical Team/Coordination Center of China (CNCERT/CC).