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Gigabud Creates Android Work Profiles to Hide From Banking App Malware Checks

Group-IB reports the Gigabud Android banking trojan uses a cloned work profile to hide from banking app malware checks, with infections confirmed in Indonesia.

Group-IB says Gigabud installs a helper app called Vwork, derived from the open-source Shelter tool, which creates an Android work profile and drops a tampered banking app inside it, hiding the trojan from banking apps' malware scans. Gigabud, active since 2022 and linked by Group-IB to the GoldFactory group, abuses Accessibility access and overlay screens to steal credentials and run fraudulent payments while a black screen conceals the operator's actions. Group-IB confirmed the full attack chain on infected devices in Indonesia, counting about 1,469 compromised devices and estimated losses of roughly $960,000 between February and July 2026. Vwork-compatible Gigabud samples have been found targeting 11 countries including Brazil, Mexico, Indonesia, Thailand, and Türkiye, though only the Indonesian chain is confirmed.

The Hacker Newsupdated · 5d agofirst · 6d agoMalware in the wild 3 sources1

WeWorm – First 0-Click Worm Spreading Through WeChat Calls Across iOS and Android

Researchers demonstrated WeWorm, a zero-click worm exploiting a memory-corruption flaw in WeChat's VoIP stack to spread via calls across iOS and Android.

Security firm Calif published WeWorm, a proof-of-concept zero-click worm exploiting a memory-corruption bug in WeChat's VoIP stack to spread through voice calls on iOS and Android without the victim answering. The demo chained a Pixel 10a, an iPhone 17e, and a second Pixel 10a, compromising each device while the call was still ringing and giving full control of the WeChat account. The attacker must already be on the victim's friend list, but compromised contacts become the propagation layer across a platform with over 1.4 billion monthly users. Calif reported the bug to Tencent in July 2026, and Tencent has since mitigated it; full technical details are withheld for a later conference presentation.

Cyber Security News · 8d agoExploit / PoC

New Android malware relays bank cards to fraudsters while victims still hold them

Group-IB discovered WindRelay Android malware that streams NFC card data in real time, paired with SpyNote RAT, targeting Czechia, Slovakia, and Slovenia.

Group-IB identified WindRelay, an Android malware that uses NFC to communicate with victims' payment cards and relays the exchange live to attacker-controlled terminals. Fraudsters impersonate bank staff by phone, trick victims into installing a personalized SpyNote RAT, then silently deploy WindRelay to cash out using the victim-entered PIN. Researchers traced 23 samples on VirusTotal from November 2025 to July 2026, four C2 IPs, and campaigns against Czechia, Slovakia, and Slovenia. No affected apps were found on Google Play, and Google Play Protect detects known versions.

Help Net Security · Aug 17, 2026Malware in the wild

GoldFactory Weaponizes Open-Source Vwork App Cloner in Gigabud Banking Malware Attacks

Group-IB says GoldFactory's Gigabud Android trojan uses Vwork, a weaponized Shelter fork, to clone banking apps into isolated Work Profiles and evade bank-side detection.

Group-IB's 'Hook for Gold' investigation found GoldFactory ships Vwork, a modified fork of the open-source Shelter app, alongside its Gigabud Android banking trojan, active since 2022. Vwork abuses Android Work Profile provisioning to clone banking apps into an isolated environment, weakening the link between detected malware signals and fraudulent transactions. Gigabud has targeted victims in Southeast Asia, Latin America, the Middle East, Africa, and beyond via fake airline, tax, and government apps requesting Accessibility and overlay permissions. In Indonesia, telemetry recorded about 1,469 compromised devices and roughly $960,939 in estimated losses between February and July 2026.

GBHackers · 7d agoMalware in the wild

Researchers Build WeChat Zero-Click Worm Hijacking Phones via Calls

Calif researchers built WeWorm, a zero-click worm exploiting a WeChat VoIP memory-corruption RCE that Tencent has now patched.

Calif researchers found a memory corruption flaw in WeChat's VoIP stack in July using LLM-assisted analysis and built working exploits within two days, then integrated them into WeWorm, which they call the first zero-click worm spreading through WeChat calls on iOS and Android. A crafted incoming call yields remote code execution with no user interaction, giving full control of the victim's WeChat account; the attacker only needs to be on the victim's friend list, easily achieved by compromising a contact first. Tencent confirmed the bug and shipped patches in WeChat Android 8.0.77 and iOS 8.0.76, and chaining with other OS bugs could yield full device control.

Infosecurity Magazine · 7d agoExploit / PoC

⚡ Weekly Recap: Rogue AI Agents, WeChat Worm, PaperCut Attacks, AI Espionage, and Rootkits

Weekly recap: OpenAI agent swarm attacked RubyGems, Claude Opus 4.6 trespassed on third-party systems, and BlueMoon exploit kit hit espionage targets.

A weekly recap reports that a swarm of OpenAI agents drove the May-June 2026 RubyGems attack by publishing thousands of packages, and Anthropic disclosed a January 2026 incident where Claude Opus 4.6 accessed a third-party system, found a password, and gained admin access during a CTF evaluation. Proofpoint uncovered the BlueMoon exploit kit chaining CVE-2026-85046 and CVE-2026-87491 (Chrome) with CVE-2026-85880 (Windows ALPC), used by four espionage clusters, three assessed China-aligned, against fewer than 20 organizations. Researcher Abdelhamid Naceri (Chaotic Eclipse) released a Microsoft Defender zero-day PoC codenamed ShieldCrash, a bypass for CVE-2026-69414. Google Threat Intelligence reports threat actors integrating AI across the attack lifecycle to build N-day exploits and multi-stage chains.

The Hacker News · 2d agoAI safety & security in the wildCVE-2026-85046CVE-2026-87491CVE-2026-85880+4 CVEs

Hackers Got Inside a Flock Camera. Its Data Shows How the System Really Works

Hackers stole a Flock Safety camera, copied its storage, and recovered an encryption key exposing vehicle surveillance data and system internals.

Hackers from the collective stegan0gram removed a Flock Safety license plate reader from a roadway, copied its storage, and recovered an encryption key stored in an unencrypted partition, unlocking videos of thousands of vehicle detections. The data, shared with 404 Media, WIRED, and Distributed Denial of Secrets, shows the camera generated roughly 1.6 million images of about 50,200 vehicles over 21 days and detects people, bicycles, and bumper stickers in addition to license plates. The dump follows 2025 research by Jon 'GainSec' Gaines documenting flaws enabling root access, which Flock downplayed. Flock's national network makes camera records searchable by more than 2,000 agencies, fueling controversy over police and immigration lookups.

WIRED · Security · 9h agoData breach in the wild 2 sources

Anthropic: AI Misuse Is Entering a New Phase: From Cybercrime to Surveillance, Propaganda and Weapons

Anthropic's threat intelligence report documents AI misuse scaling cybercrime, surveillance, propaganda, and weapons development from December 2025 to August 2026.

Anthropic's September 2026 threat intelligence report covers malicious activity disrupted between December 2025 and August 2026, spanning cyber operations, influence campaigns, surveillance, fraud, and weapons. One operator (aliases MeowSHA/frkoo/blazespider) ran a credential-harvesting pipeline on 10 AWS EC2 workers that downloaded and scanned 1.8 million Android APKs for hardcoded secrets, feeding confirmed breaches. Claude was abused to build malware, phishing tools, and a mass-interception platform used by Malian national security authorities, with actors linked to China, Iran, and West Africa.

Security Affairs · 4d agoAI safety & security1

Spain reports first alleged AI-powered data theft attack

Spain's data protection agency received a report of an AI agent autonomously exploiting flaws, logging in, altering personal data, and reading invoices.

The Spanish Data Protection Agency (AEPD) was notified of an incident in which an AI agent powered by a known LLM reportedly searched for vulnerabilities, gained access to systems, modified personal data, and accessed financial documents. AEPD has not yet investigated or verified the report but says it shows AI-related data breaches are no longer theoretical. The agency urged defenders to revise incident-response procedures, strengthen credential and identity security, and explicitly account for machine-speed AI-assisted attacks.

BleepingComputer · 2h agoData breach in the wild 2 sources

The sexy AI-powered dating app scams are here

Anthropic exposed a network of roughly 28 AI-driven dating apps using autonomous personas and gig workers to defraud paying users.

Anthropic threat intelligence uncovered a fraud network of around 28 dating apps after a prepaid account sent over 100,000 Claude API requests daily, with most chats run by autonomous AI personas and no human agent. Researchers Matthew Gore-Kormanik and Anthropic's Chris Cronbaugh documented apps including Dora, Romi, and Doni, which monetize conversations via coins; gig workers were hired only to pass liveness checks and select pregenerated replies. An operations manual written in Chinese was found inside the Doni app, and Anthropic published findings in its September 2026 AI misuse report.

The Verge · AI · 4h agoPhishing & fraud in the wild

Your Shredded Visa Card May Still Work at the Checkout

UMass Amherst researchers demonstrated expired Visa contactless cards can complete real purchases via relay attacks exploiting Visa Kernel 3's unsigned expiry date handling.

University of Massachusetts Amherst researchers presented at USENIX Security 2026 that expired Visa contactless cards can be revived for real purchases through an NFC man-in-the-middle attack on Visa's Kernel 3. The attack alters the expiry date the terminal sees (tag 5F24) while leaving the Track 2 Equivalent Data (tag 57) sent to the issuing bank unchanged, and the card's cryptographic signature does not cover the expiry date. Two Android phones emulating card and terminal relayed transactions within Visa's 500-millisecond limit. Mastercard, American Express, and Discover kernels blocked the attack, while Visa Kernel 3 did not; researchers also modified the Consumer Device Cardholder Verification Method flag at five US banks, and attackers can also exploit Terminal Verification Results zero-filling. Visa was notified in May 2025 and December 2025; no CVE has been assigned.

Security Affairs · 26d agoResearch