The FamousSparrow espionage group, linked to China, has deployed a new backdoor malware named SparroWocky targeting government organizations in Latin America since mid-2025. SparroWocky is a modular C++ backdoor with advanced anti-analysis and evasion techniques, including DLL side-loading, runtime code patching, and thread creation interception to disguise malicious activity. It enables extensive system reconnaissance, file operations, screenshot capture, process creation, and network proxying. Persistence is maintained via Windows services or registry keys. The malware communicates with multiple command-and-control servers over common ports and proxies. The attacks aim to gather intelligence on Latin American governments' responses to U.S. pressure on Chinese economic interests.
A financially motivated Russian threat actor tracked as UAT-11795 is using trojanized software to steal credentials and cryptocurrency by deploying a new backdoor called Starland RAT. [...]
Dubbed Lotus Wiper, the malware targets recovery mechanisms, overwrites drives, and systematically deletes files. The post New Wiper Malware Targeted Venezuelan Energy Sector Prior to US Intervention appeared first on SecurityWeek .
A new phishing campaign is targeting TikTok for Business accounts using adversary-in-the-middle (AitM) techniques. The attackers employ Cloudflare Turnstile to evade detection and create convincing lookalike pages impersonating TikTok for Business or Google Careers. Victims are tricked into clicking malicious links, leading to credential theft. The campaign aims to seize control of business accounts, which can be used for malvertising and malware distribution. Multiple domains are involved in hosting the phishing pages. Additionally, a separate campaign using SVG file attachments to deliver malware has been observed in Venezuela, with potential links to BianLian ransomware activity.
UAT-9244, a China-nexus advanced persistent threat actor, has been targeting critical telecommunications infrastructure in South America since 2024. The group employs three new malware implants: TernDoor, a Windows-based backdoor variant of CrowDoor; PeerTime, an ELF-based backdoor using BitTorrent protocol; and BruteEntry, a brute force scanner for SSH, Postgres, and Tomcat servers. UAT-9244 uses dynamic-link library side-loading, scheduled tasks, and registry modifications for persistence. The group is closely associated with FamousSparrow and Tropic Trooper, sharing similar tooling and tactics. Their infrastructure includes multiple command and control servers and operational relay boxes for scanning and brute-forcing activities.
An investigation using Silent Push's Traffic Origin and residential proxy data revealed a suspicious Chinese VPN provider. The analysis focused on IP address 205.198.91.155, which showed unusual traffic from Russia, China, Myanmar, Iran, and Venezuela. This IP was linked to the domain lvcha.in, hosting a Chinese-language VPN. Further investigation uncovered nearly 50 related domains promoting the same VPN, suggesting attempts to bypass country-level firewalls. The VPN's infrastructure was found to use residential proxies and had connections to various high-risk countries. This case study demonstrates the importance of verifying physical and technical behaviors of connections to protect against fraud and state-sponsored actors using stolen identities and spoofed locations.
