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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.
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Gigabud Uses Android App Cloning to Evade Fraud Detection
Group-IB reports the Gigabud Android banking trojan clones bank apps into isolated work profiles via the Vwork tool to evade fraud detection, with roughly $960,000 in losses in Indonesia.
Group-IB found Gigabud now ships dedicated code to work with Vwork, a weaponized fork of the open-source Android cloning app Shelter it attributes to GoldFactory, exposing cloning functions so any installed app can call them. After installing via phishing sites and messengers posing as airline, tax and government apps, operators request accessibility and overlay permissions, then clone the victim's banking app into a new work profile where it is invisible to signature-based detection in the personal profile. Fake login screens and overlays capture credentials while cloned-app transactions appear to banks as coming from an unrecognized, malware-free device. Between February and July 2026 in Indonesia, Group-IB observed about 1,469 compromised devices, 1,281 potentially compromised logins and estimated losses of roughly $960,939, with Vwork-enabled samples targeting 11 countries including Brazil, Mexico, Egypt and Thailand.
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Hackers Clone Banking Apps Into Hidden Android Work Profiles to Evade Fraud Detection
GoldFactory-linked Gigabud and Vwork malware clone banking apps into hidden Android work profiles to evade fraud detection across 11+ countries.
Group-IB links Vwork, a modified version of the open-source Shelter app cloner, to the GoldFactory group and its Gigabud Android RAT, which clones victim banking apps into an isolated work profile so fraud sessions look clean to banks. From February through July 2026, researchers observed about 1,469 compromised devices and 1,281 potentially compromised logins in Indonesia, with estimated losses near $960,939. Targets span Brazil, Colombia, Egypt, Indonesia, Mexico, Morocco, the Philippines, Thailand, Türkiye, Laos, and a GCC state; delivery uses fake airline, tax, government, and banking apps pushed via phishing sites, messaging apps, and social media.
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Authorities Turn Sality's P2P Network Against Itself, Cutting Off New Malware Payloads
US and European authorities with CrowdStrike dismantled the two-decade-old Sality P2P botnet using peer-list manipulation, blocking payload delivery to infected hosts.
The US Department of Justice announced a coordinated takedown of the Sality peer-to-peer botnet, executed August 31, 2026 by authorities from the US, Bulgaria, Hungary, and Romania with CrowdStrike and the Shadowserver Foundation. Sality, active since 2003, infects Windows executables and delivers payloads including the EggJagger crypto clipper, which stole at least $150,000, and was used for DDoS campaigns. The operation abused the botnet's peer-list maintenance cycle to insert sinkhole nodes and isolate both super peers and NAT-hidden infections, cutting off URL and payload distribution to more than 15,000 infected machines across two P2P networks.
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HVNC Backdoor Targets LATAM Organizations with Fake Tax and DocuSign Lures
A custom HVNC backdoor is targeting Latin American financial organizations via fake DocuSign and NFe tax-document lures, giving attackers hidden persistent remote access.
ANY.RUN researchers analyzed a multi-stage phishing campaign delivering a custom HVNC backdoor to banking and financial organizations in Latin America. The chain starts with fake DocuSign and NFe tax-document pages that serve per-visitor ZIP archives, followed by an LNK dropper, an NSIS loader, and a 64-bit backdoor masquerading as Windows Update Assistant. The implant provides hidden remote desktop control, keystroke monitoring, Firefox data theft, Startup-folder persistence, and EDR-aware behavior, communicating over TCP/27015.
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