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Blog de Segurança

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Cyber threats
#SemFiltro: Expondo as Táticas dos Hackers de Contas do Instagram

Quais táticas os hackers de contas do Instagram usam? O que esses cibercriminosos fazem com contas roubadas? Como os usuários podem proteger suas contas? Analisamos incidentes de hacking de contas do Instagram do ponto de vista de um pesquisador de segurança e compartilhamos recomendações para usuários do Instagram e de outras plataformas de mídia social.

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SHAREit Flaw Could Lead to Remote Code Execution

We discovered vulnerabilities in the SHAREit application. These vulnerabilities can be abused to leak a user’s sensitive data, execute arbitrary code, and possibly lead to remote code execution. The app has over 1 billion downloads.

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XCSSET Mac Malware: Infects Xcode Projects, Uses 0Days

Further investigation led us to a developer’s Xcode project that contained XCSSET source malware, which leads to a rabbit hole of malicious payloads. Most notable in our investigation is the discovery of two zero-day exploits.

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Malware
Bashlite Atualizado com Comandos de Mineração e Backdoor

Descobrimos um malware Bashlite atualizado, projetado para adicionar dispositivos infectados da internet das coisas a uma botnet de negação de serviço distribuída (DDoS). Com base no módulo Metasploit que explora, o malware tem como alvo dispositivos com a API WeMo UPnP.

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IoT & smart devicesMalware
Beauty Camera Apps Send Users Porn, Collects Pictures

We discovered several beauty camera apps (detected as AndroidOS_BadCamera.HRX) on Google Play that are capable of accessing remote ad configuration servers that can be used for malicious purposes. Some of these have been downloaded millions of times.

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AutoIt-Compiled Worm Sends Fileless BLADABINDI/njRAT

BLADABINDI’s customizability and seeming availability in the underground make it a prevalent threat. Last week, we came across a worm (Worm.Win32.BLADABINDI.AA) that propagates through removable drives and installs a fileless version of BLADABINDI.

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Malware
Aplicativo bancário falso encontrado no Google Play usado em SMiShing

Conforme os usuários começam a procurar por aplicativos e outros serviços de seus bancos, as oportunidades para golpistas também aumentam. Um exemplo recente disso é o aplicativo Movil Secure, parte de um esquema de SMiShing que tem como alvo usuários de língua espanhola.

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Malware
New AndroRAT Exploits Allow for Permanent Rooting

A new variant of Android Remote Access Tool can inject root exploits to perform malicious tasks such as silent installation, shell command execution, WiFi password collection, and more. It targets CVE-2015-1805, a vulnerability disclosed in 2016.

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Google’s DoubleClick Abused to Deliver Miners

On January 24, 2018, we observed that the number of Coinhive web miner detections tripled due to a malvertising campaign. Attackers seem to have abused Google’s DoubleClick, which provides internet ad serving services, for traffic distribution.

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Cyber threats
Digmine Miner Spreading via Facebook Messenger

A new cryptocurrency-mining bot is spreading through Facebook Messenger. We named this Digmine based on the moniker (비트코인 채굴기 bot) it was referred to in a report of recent related incidents in South Korea.

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