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: September 26, 2026 ~ October 2, 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 37 new detectable malware families, 7,786 new detectable malicious code variants, and 27,438 new detection rules.

Number	Virus Name	Virus Description
1	Trojan/Win64.Biriba[Backdoor]	The family is a Trojan primarily spread through network downloads, featuring independent propagation and strong stealth capabilities. It attempts to conceal itself, steal users’ sensitive information, and compromise system security and stability.
2	Trojan/Win64.Doomma[Ransom]	This family is a type of Trojan, typically spreading through phishing emails, malicious downloads, or exploit attacks. Once infected, the malware encrypts users’ files and demands a ransom for the decryption key, posing a severe threat to computer systems.
3	Trojan/Win64.MemTenSteal	This family is a Trojan that primarily lurks within computer systems through Trojan programs, monitoring user keyboard inputs and screen operations to record sensitive information such as account credentials and passwords.
4	Trojan/MacOS.MacSync[PSW]	This family is a Trojan primarily targeting macOS systems, which infiltrates victims’ computers by deceiving users or carrying other malicious software. Once infected, it operates in the background, stealing sensitive information covertly, monitoring user activities, and transmitting data to remote servers.
5	Trojan/Linux.ZaWoo[Ransom]	This family is a Trojan virus. Attackers gain initial access by exploiting valid VPN credentials (lacking MFA), then conduct network reconnaissance, credential theft, and lateral movement. They disable EDR/AV via HRSword (BYOVD) while using self-developed PowerShell scripts (G-.ps1, Cp-.ps1) for data collection. Business data is exfiltrated using tools like Rclone, and a two-stage silent encryption process is executed via a Linux/ELF64 encryptor targeting Synology NAS.

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

For more related content, please visit www.virusview.net

2. Full Detection Capabilities

As of 24:00 on October 2, 2026, the AVL SDK anti-virus engine can detect 18,726,035 malware variants of 57,495 malware families distributed in 8 basic categories, with a total of 42,727,740 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	59,819	6,855,566
Worms	316,693	3,970,224
Trojans	13,661,609	26,191,253
Hacking tools	461,927	373,337
Risk tools	1,209,007	2,280,612
Rogue software	3,016,941	3,055,536
Junk files	11	1,086
Test programs (for self-test)	28	126
Total	18,726,035	42,727,740

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 AVL SDK and the accompanying malware knowledge base can output 533 key behavior mapping tags, covering 139 categories of ATT&CK tactical 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

This week, be vigilant against attacks launched by the Zawoo ransomware operated by the Zawoo group. Attackers gain initial access by exploiting valid VPN credentials (lacking MFA), then conduct network reconnaissance, credential theft, lateral movement, and disable EDR/AV via HRSword (BYOVD). They also use self-developed PowerShell scripts (G-.ps1, Cp-.ps1) for data collection, steal business data with tools like Rclone, and deploy a Linux/ELF64 encryptor targeting Synology NAS to perform a two-stage silent encryption. Affected organizations primarily include those without MFA enabled or lacking active monitoring of VPN exposure

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).

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