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FamousSparrow Deploys New SparroWocky Backdoor Against Latin American Governments

China-aligned APT FamousSparrow deployed a new modular backdoor, SparroWocky, against government entities across eight Latin American countries since August 2025, ESET reports.

ESET reports that China-aligned threat actor FamousSparrow replaced its SparrowDoor implant with SparroWocky, a distinct modular C++ backdoor active against governments in Argentina, Ecuador, Guatemala, Honduras, Panama, Peru, Puerto Rico, and Venezuela. Around 90% of the group's targets from mid-2025 into 2026 were in Latin America, which ESET links to regional competition over US influence. The backdoor arrives via a three-component DLL side-loading chain, persists through a Windows service (ProcAuditManager) or Run keys (SnapCart), captures screenshots, and exfiltrates RC4-encrypted data over TLS C2 on ports 443 and 8080. It supports in-memory Beacon Object File execution, API hashing, and SilentMoonwalk-style call-stack spoofing; IOCs for three C2 servers were released.

GBHackersupdated 11:20 UTC · 2h agofirst 11:04 UTC · 2h agoThreat actor in the wild 3 sources CVE-2021-26855

Hackers Are Hiding Espionage Infrastructure Inside Ordinary-Looking Casino Websites

Infoblox links China-aligned APT PeckBirdy C2 infrastructure hidden in casino and adult websites targeting Asian government, finance, IT, and education sectors.

Infoblox researchers report that China-aligned APT groups have used casino and adult websites as cover for PeckBirdy, a JavaScript command-and-control framework active since 2023. The sites embed C2 servers, register service workers for persistence, and serve fake browser-update prompts delivering backdoors capable of running commands, stealing credentials, and providing remote access. Targeted sectors across Asia include education, IT, banking, financial services, and government. Just over 3% of Infoblox enterprise customers resolved at least one PeckBirdy C2 domain, with detection coverage on VirusTotal ranging from 13 detections to none.

Cyber Security NewsSep 16, 11:44 UTC · 1d agoThreat actor 2 sources

One Exploit Chain, Two Espionage Campaigns: Chrome and Windows Under Fire

Two China-linked APT groups reused identical Chrome/Windows zero-day chain against NGOs, deploying GRIMWIDGE backdoor and LONGTALE credential-stealing extension.

Volexity reports that China-linked actors UTA0560 and JungleBamboo (APT31/TA412) ran byte-identical Chrome/Windows exploit chains against NGOs starting September 1, 2026, combining Chrome type confusion CVE-2026-85046, WebAssembly sandbox escape CVE-2026-87491, and Windows kernel flaw CVE-2026-85880. The Chrome bug was fixed in Chromium source but not yet shipped to Chrome users, making it an effective zero-day with an unusual patch gap. UTA0560 delivered the in-memory GRIMWEDGE JScript backdoor, while JungleBamboo deployed the SUPERSTOMP loader installing LONGTALE, a malicious Chrome extension disguised as Google Gemini that steals cookies, session tokens, and keystrokes. Volexity assesses with low confidence the exploit chain was sold or shared among different Chinese end-users.

Security AffairsSep 15, 10:17 UTC · 2d agoThreat actor in the wild 8 sources CVE-2026-85046 CVE-2026-87491 CVE-2026-858804