Threats Tagged 't1529'

An active malware campaign utilizes fraudulent software-download websites impersonating trusted vendors to distribute malicious installers. The operation primarily targets China-based operations of multinational organizations and Chinese-speaking users across healthcare, manufacturing, gaming, technology, logistics, government, and education sectors. The malicious installers deploy malware capable of establishing persistence, disabling Windows Update services, configuring Microsoft Defender exclusions, deleting volume shadow copies, and establishing command-and-control communications. Microsoft attributes this activity with moderate confidence to the Chinese threat cluster Silver Fox, known for using spoofed vendor download pages to distribute remote access trojans. The campaign leverages high-fidelity clones of legitimate vendor websites hosted on Chinese domains, delivering server-side generated payloads through ZIP archives.

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ValleyRAT is a backdoor malware distributed disguised as legitimate Chinese adware called QN Wallpaper. It uses DLL sideloading to execute malicious code under a signed process. The malware includes capabilities such as keylogging, clipboard monitoring, screenshot capture, and module delivery. The campaign has impacted over 1,500 users mainly in China and India with over 100,000 detections in 2026. The Silver Fox threat group is attributed to this campaign. The malware disables Windows Defender, establishes persistence, and protects its processes by marking them critical to cause system crashes if terminated.

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An Akira ransomware affiliate gained initial access through an exposed SonicWall VPN without multi-factor authentication via credential spraying. After compromising the domain controller, the attacker performed Active Directory enumeration, collected and exfiltrated data using WinRAR and s5cmd to cloud storage. The affiliate employed a novel evasion technique by rebooting the victim host into Safe Mode with Networking to disable EDR and antivirus protection. AnyDesk was installed as a persistent remote access mechanism. However, the Safe Mode environment caused the ransomware to fail due to out-of-virtual-memory errors, preventing encryption. Despite the encryption failure, the attacker had already exfiltrated credentials and file shares, enabling extortion through data leak threats. This marks the first observed instance of Akira affiliates using Safe Mode boot as an anti-EDR technique.

In this article Pre-encryption Encryption Post-encryption Defending against DeadLock ransomware Indicators of compromise Microsoft Threat Intelligence tracks DeadLock ransomware as an emerging financially motivated operation distinguished by its use of decentralized infrastructure to support victim communications and data leak operations. Its recovery ecosystem combines the Session messaging network with blockchain-backed services that store and deliver resources used throughout the extortion process. This architecture likely increases the resilience of portions of its communication, leak-hosting, and negotiation infrastructure, allowing DeadLock operators to recover from some disruption efforts while maintaining continuity for victims. Microsoft has observed DeadLock ransomware being deployed by multiple groups including an affiliate of the Lynx and INC ransomware ecosystems. First observed in July 2025, DeadLock operators employ double extortion tactics, encrypting victim environments while threatening to publicly release exfiltrated data. As of July 2026, the operators have published more than 80 compromised organizations on their data leak site, called the DeadLock blog, with more than half of the claimed victims in Europe. Microsoft identified DeadLock ransomware impacting organizations across information technology (IT), mining, transportation and logistics, manufacturing, hospitality, consumer goods, and other sectors in Europe, Asia, North America, South America, and Africa. The DeadLock encryptor includes a resource-aware throttling mechanism designed to maintain system responsiveness during encryption. In addition to its encryption capabilities, the ransomware also appears to implement language or country-based geofencing designed to avoid running in environments associated with former Soviet and Commonwealth of Independent States (CIS)-linked countries as well as select Middle Eastern countries, a pattern commonly observed among ransomware operators believed to operate from those regions. Together, these capabilities demonstrate how DeadLock combines established ransomware tradecraft with decentralized infrastructure designed to improve operational resilience. In this blog, we present a technical analysis of the DeadLock ransomware encryptor, covering its execution flow, defense evasion techniques, encryption design, and post-encryption behaviors, including a decentralized recovery chat system. We also provide indicators of compromise (IOCs), Microsoft Defender detections, and mitigation guidance to help organizations defend against this threat and similar ransomware activity. Pre-encryption Configuration parsing Before performing any malicious activity, the DeadLock encryptor decrypts an embedded configuration blob using XOR decoding with an 8-byte key. Below are the malware’s configuration fields and their values. Field Value Victim UID Malware public key 03bf50bbf97c4e951e66ff12b689a37a3ce675b4921e254eae76da77573843e4a9 Encryption rule 1000,05052429880,025124288000,010524288000,F991114288000 Language exclude list Geofencing language IDs (see Language geofencing ) Process stop list Processes to terminate (see Process and service termination ) Service stop list Services to stop and delete (see Process and service termination ) File exclude list Extensions and file names to avoid encrypting (see Directory traversal ) Directory exclude list Pre-traversal filter with directories to avoid encrypting (see Directory traversal ) Sub-path Exclude List Sub-paths to avoid encrypting during traversal (see Directory traversal ) Text ransom note Full text ransom note content (see Ransom notes deployment ) HTML recovery chat Full HTML/JS interactive chat page (see Recovery chat: Technical architecture ) Language geofencing As an early exit check, the malware queries the system’s default and user interface (UI) languages. If either language matches the exclude list in the configuration, the malware self-deletes immediately withou…

In October 2025, Microsoft Threat Intelligence discovered GigaWiper, a sophisticated Golang-based backdoor that combines command-and-control capabilities with multiple destructive payloads. This versatile implant consolidates functionality from at least three separate malware families: a standalone wiper operating at physical disk level, a destructive component derived from Crucio ransomware that encrypts files with randomly generated unsaved keys, and a reimplemented version of FlockWiper with enhanced multi-pass secure wiping. The backdoor provides 20 different commands enabling threat actors to maintain control, execute operations, collect system information, and trigger destructive actions on demand. GigaWiper establishes persistence through scheduled tasks, communicates via RabbitMQ and Redis servers, and can perform disk wiping, fake ransomware encryption, screen recording, VNC-like remote control, and system-level sabotage including BSOD triggers and event log clearing.

The Gentlemen is an active ransomware and extortion operation that emerged publicly in the second half of 2025, rapidly escalating into a high-volume threat actor. The group appears to be a continuation or reorganization of prior ransomware affiliate activity, with reported connections to the Qilin ecosystem and the Russian-speaking actor 'hastalamuerte.' This growth likely reflects existing ransomware experience, affiliate relationships, and access to established resources. Underground sources indicate attempts to sell data allegedly connected to The Gentlemen ransomware activity, though the available information lacks sufficient victim-specific or technical details to confirm authenticity. The operation utilizes SystemBC for command and control communications and deploys ransomware variants targeting both Windows and Linux systems.

Vect ransomware emerged in January 2026 as a new threat actor operating a Ransomware-as-a-Service program with strategic partnerships that significantly expand its reach. The group has partnered with TeamPCP, known for supply chain attacks compromising security tools like Trivy, KICS, and LiteLLM, and BreachForums, distributing affiliate keys to forum members. With 25 published victims primarily targeting the United States and Technology sector, Vect maintains an open affiliate program requiring only a $250 invite code. The operation offers multi-platform ransomware payloads for Windows, Linux, and ESXi with sophisticated lateral movement capabilities and tiered commission structures reaching 89% for top affiliates. Analysis reveals connections to the defunct Devman ransomware through shared code strings and ransom note similarities, suggesting possible rebranding or code reuse.

Check Point Research discovered critical flaws in VECT 2.0 ransomware affecting Windows, Linux, and ESXi platforms. A fundamental encryption implementation error causes files larger than 128 KB to be permanently destroyed rather than encrypted. The malware uses ChaCha20-IETF cipher but only saves one of four decryption nonces required for large files, making recovery impossible even after ransom payment. VECT's encryption speed modes are non-functional, thread scheduling degrades performance, and anti-analysis code is unreachable. Despite partnerships with TeamPCP and BreachForums for distribution, the technical implementation demonstrates amateur execution behind a professional facade. The nonce-handling flaw exists across all platform variants since initial deployment, effectively transforming this ransomware into a wiper for enterprise assets including VM disks, databases, and backups.

A highly targeted destructive wiper campaign dubbed 'Lotus Wiper' was discovered targeting the energy and utilities sector in Venezuela during late 2025 and early 2026. The attack begins with batch scripts coordinating execution across networks using domain shares as trigger mechanisms. These scripts disable security services, lock out users, and prepare the environment for the final payload. The Lotus Wiper systematically destroys data by wiping physical drives with zeros, deleting restore points, clearing USN journals, and recursively deleting files. Unlike ransomware, this wiper has no financial motivation or ransom demands, designed purely for data destruction. Evidence suggests attackers maintained long-term domain access prior to the attack, with the wiper compiled months before deployment. The malware targets older Windows systems and uses legitimate system tools like diskpart, robocopy, and fsutil.

ESET researchers provide technical details on a recent data destruction incident affecting a Polish energy company. They identified new data-wiping malware named DynoWiper, attributed to the Russia-aligned threat group Sandworm with medium confidence. The tactics, techniques, and procedures observed during the DynoWiper incident resemble those seen earlier in an incident involving the ZOV wiper in Ukraine. Sandworm has a history of destructive cyberattacks, targeting various entities including energy providers. The DynoWiper samples focus on the IT environment, with no observed functionality targeting OT industrial components. The attackers deployed additional tools and attempted to use a SOCKS5 proxy. The incident represents a rare case of a Russia-aligned threat actor deploying destructive malware against an energy company in Poland.

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