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Iranian hackers use CHOSEN BRICK Windows malware to spy on targets

Iranian state-linked hackers use CHOSEN BRICK Windows malware, spread via Telegram and WhatsApp social engineering, to spy on dissidents and journalists worldwide.

US, UK, and Dutch cyber agencies with the FBI issued a joint advisory on Iranian state-linked hackers deploying a Windows malware strain called CHOSEN BRICK against dissidents, activists, and journalists, primarily in the US, UK, and Netherlands. Attacks begin with messages on WhatsApp or Telegram impersonating trusted contacts or technical support, tricking victims into running malicious files disguised as apps such as Pictory, RunwayML, Norton Antivirus, Telegram, and KeePass. The malware persists via Registry Run keys, adds Microsoft Defender exclusions, and uses a per-victim Telegram bot for command-and-control while stealing email, Telegram and WhatsApp data, screenshots, and audio. Stolen data is exfiltrated via Telegram or cloud services like VultrObjects and StorjShare, and sometimes appears on pro-Iranian leak sites, increasing physical risk for dissidents abroad.

BleepingComputerupdated · 5h agofirst · 16h agoThreat actor in the wild 7 sources

Three Threat Groups Target Russian Enterprises With Backdoors, Ransomware, and Wipers

Kaspersky details NightEagle, Hacking Cat, and Toy Ghouls targeting Russian enterprises with Exchange backdoors, Gorilla RAT, and destructive Monkey ransomware.

Kaspersky reports three threat clusters targeting Russian enterprises: NightEagle (APT-Q-95), the pro-Ukrainian hacktivist group Hacking Cat, and Toy Ghouls. NightEagle uses compromised VPN credentials and the GhostContainer modular backdoor to fully compromise Microsoft Exchange servers, chaining CVE-2020-0688 exploitation, BlueKeep (CVE-2019-0708), Active Directory vulnerabilities, and DCSync to seize domain controllers. Hacking Cat exploits Exchange flaws including CVE-2021-26855 and CVE-2026-42897 to deliver the Gorilla RAT and multiple Monkey ransomware variants written in Rust, .NET, C++, and Golang targeting Windows, Linux, and VMware ESXi, with some variants acting as wipers that never store the encryption key.

The Hacker Newsupdated · 5h agofirst · 21h agoThreat actor in the wild 5 sourcesCVE-2020-0688CVE-2019-0708CVE-2021-26855+1 CVEs1

Ransomware incidents in Japan in the first half of 2026: Investigation of The Gentlemen’s infrastructure and evidence of Qilin's AI use

Cisco Talos reports 90 ransomware incidents hit Japanese organizations in H1 2026, led by The Gentlemen, with Qilin using AI for efficiency.

Cisco Talos observed 90 ransomware incidents against Japanese organizations from January to July 2026, up about 4.7% year over year, with manufacturing accounting for 34% of victims. The Gentlemen was the most active group with 14 incidents; its leak-site listings grew from 48 in January to 105 in July. Qilin and SafePay followed with seven incidents each, and Talos notes Qilin is leveraging AI to improve operational efficiency.

Cisco Talosupdated · 27m agofirst · 2h agoRansomware in the wild 2 sources

FamousSparrow Exploits Public-Facing Exchange Servers to Deploy SparroWocky Backdoor

ESET attributes a new SparroWocky backdoor to espionage group FamousSparrow, deployed via exploited internet-facing Exchange servers across Latin American governments.

ESET's Welivesecurity team reports FamousSparrow gained initial access by exploiting publicly reachable Microsoft Exchange servers, with roughly 90 percent of targets since mid-2025 in Latin America, including governments in Argentina, Ecuador, Guatemala, Honduras, Panama, Peru, Puerto Rico, and Venezuela. The group's new modular C-language backdoor SparroWocky replaces SparrowDoor and uses a three-part loader: a legitimate executable, a malicious DLL side-loaded in memory, and an encrypted payload. It persists via Windows services or Registry Run keys, supports screenshots, file operations, TCP proxying, Beacon Object Files, TLS/RC4-encrypted C2, and anti-forensics such as call-stack spoofing. IOCs including loader SHA-1 hashes and C2 IP addresses were published.

Cyber Security News · 1h agoThreat actor in the wild 3 sources

APT36 Uses USB-Spreading Malware to Reach Air-Gapped Government Networks

Zscaler attributes the RapidRust campaign by Pakistan-linked APT36 to USB-propagating Rust malware targeting air-gapped government networks in India and Afghanistan.

Zscaler identified in August 2026 a campaign tracked as RapidRust in which APT36 uses infected removable drives to reach air-gapped government environments in India and Afghanistan. RUSTYMOVE, a Rust USB-spreading utility, copies a fake-PDF shortcut and the RUSTYSHADE backdoor to removable media; RUSTYSHADE uses attacker-controlled private GitHub repositories for C2, running shell commands, capturing screenshots and webcam images, while PSNATCH and BASHNATCH steal files. Operators enumerated users, shares, and remote administrative shares to expand beyond initial victims, with payloads staged on lookalike domains mimicking Indian media outlets and Backblaze B2 storage.

Cyber Security News · 2h agoThreat actor in the wild 3 sources

SilkParasite-Linked Malware Infrastructure Traced Back Four Years Across Central Asianew

Hunt.io links SpiceRAT C2 servers to China-nexus SilkParasite espionage targeting Central Asian governments, with related infrastructure active since 2022.

Hunt.io and researcher Guy Yasur traced a cluster of SpiceRAT command-and-control servers active from late 2025 to August 2026 to infrastructure linked to the China-nexus SilkParasite espionage operation. Shared parent domains, a certificate resembling an Uzbek railway entity, and a cloned RTX Corporation homepage appearing on 13 servers connect SpiceRAT systems to NodeEdgeRAT and NomadRAT infrastructure. Passive DNS records show related subdomains as early as mid-2022, suggesting the infrastructure has existed for at least four years. Hostnames impersonate government, energy and telecom targets across Turkmenistan, Tajikistan, Uzbekistan, Kyrgyzstan and Kazakhstan.

Cyber Security News · 30m agoThreat actor in the wild

Fake AI trading agent steals crypto wallet passwords

Fake AI crypto trading agent sites deliver Needle Stealer, which replaces browser wallet extensions to steal wallet passwords, HP reports.

HP researchers tracked campaigns between April and June 2026 in which a fake AI trading agent site, tradingclaw[.]pro, distributed a Microsoft-signed OLEView executable that DLL side-loads a malicious iviewers.dll and launches Needle Stealer via process hollowing. Needle replaces one of seven browser wallet extensions, including MetaMask, Coinbase Wallet, and Phantom, to capture wallet passwords. Related campaigns used QR-code invoice phishing leading to fake OneDrive pages, Phantom Stealer sold as a penetration testing tool with VBScript-to-PowerShell steganographic loaders, and image-hidden payloads delivering XWorm, PureLogs Stealer, and Formbook; a perceptual-hash VirusTotal search found about 400 distinct rigged images.

Help Net Security · 4h agoMalware in the wild1

GhostCode Abuses Microsoft Entra Device Enrollment to Maintain Access After Token Revocation

eSentire exposes GhostCode, a device-code phishing kit that abuses Microsoft Entra device enrollment to persist even after stolen tokens are revoked.

eSentire's Threat Response Unit observed GhostCode campaigns in late August 2026, using BEC-style social engineering that impersonated procurement staff, including BJ's Wholesale Club, via Salesforce contact forms. Victims received password-protected HTML lures disguised as a FlipBook document portal, with junk-data padding, HTML comment injection, and AES-256-GCM encrypted redirects gated by anti-bot checks. The kit exploits the OAuth 2.0 device authorization grant, prompting victims to approve real Microsoft device-code sign-ins with MFA. Within 78 seconds of approval, attackers registered three Entra devices and obtained a Primary Refresh Token, so rogue device registrations persist even after session token revocation.

GBHackers · 23h agoPhishing & fraud in the wild2

Oracle Critical Security Update – 673 Vulnerabilities Patched Across Product Families

Oracle's September 2026 Critical Patch Update ships 673 patches across 17 product families, including 100+ critical and 240+ remotely exploitable flaws.

Oracle's September 2026 Critical Security Patch Update ships 673 patches covering 672 unique CVEs, with more than 130 additional CVEs resolved through bundled fixes, pushing the effective total past 800. Over 100 flaws are critical severity and more than 240 are remotely exploitable without authentication. Oracle E-Business Suite received 159 fixes, Fusion Middleware 153 (78 unauthenticated and network-exploitable), and Hyperion 102. No in-the-wild exploitation of these specific flaws is reported, but Oracle cites CISA's earlier 72-hour remediation order for actively exploited CVE-2026-21962 (CVSS 10.0).

Cyber Security Newsupdated · 17h agofirst · 23h agoAdvisory 3 sourcesCVE-2026-219621