Astaroth Banking Trojan Targets Brazilians via WhatsApp Messages

Researchers at Acronis have discovered a new campaign called Boto Cor-de-Rosa, where the Astaroth banking malware spreads like a worm through WhatsApp Web to steal contact lists and banking credentials...

WhatsApp Worm Spreads Astaroth Banking Trojan Across Brazil via Contact Auto-Messaging

Cybersecurity researchers have disclosed details of a new campaign that uses WhatsApp as a distribution vector for a Windows banking trojan called Astaroth in attacks targeting Brazil. The campaign has been codenamed Boto Cor-de-Rosa by Acronis Threat Research Unit. "The malware retrieves the...

Astaroth Trojan Uses GitHub Images to Stay Active After Takedowns

Astaroth banking trojan has evolved to use GitHub and steganography for resilient C2, hiding its vital commands in images. Learn how this sophisticated malware employs fileless techniques to steal banking and crypto credentials from users across Latin America...

Astaroth Banking Trojan Abuses GitHub to Remain Operational After Takedowns

Cybersecurity researchers are calling attention to a new campaign that delivers the Astaroth banking trojan that employs GitHub as a backbone for its operations to stay resilient in the face of infrastructure takedowns. "Instead of relying solely on traditional command-and-control C2 servers that...

Astaroth Phishing Kit Bypasses 2FA to Hijack Gmail and Microsoft Accounts

New Astaroth Phishing Kit bypasses 2FA two-factor authentication to steal Gmail, Yahoo and Microsoft login credentials using a…...

Astaroth Banking Malware Resurfaces in Brazil via Spear-Phishing Attack

A new spear-phishing campaign targeting Brazil has been found delivering a banking malware called Astaroth aka Guildma by making use of obfuscated JavaScript to slip past security guardrails. "The spear-phishing campaign's impact has targeted various industries, with manufacturing companies, reta...

Water Makara Uses Obfuscated JavaScript in Spear Phishing Campaign, Targets Brazil With Astaroth Malware

Trend Micro researchers have uncovered a surge of malicious activities involving a threat actor group that we track as Water Makara. This group is targeting enterprises in Brazil, deploying banking malware using obfuscated JavaScript to slip past security defenses...

Grandoreiro Banking Trojan Hits Brazil as Smishing Scams Surge in Pakistan

Pakistan has become the latest target of a threat actor called the Smishing Triad, marking the first expansion of its footprint beyond the E.U., Saudi Arabia, the U.A.E., and the U.S. "The group's latest tactic involves sending malicious messages on behalf of Pakistan Post to customers of mobile...

Astaroth, Mekotio & Ousaban abusing Google Cloud Run in LATAM-focused malware campaigns

Google Cloud Run is currently being abused in high-volume malware distribution campaigns, spreading several banking trojans such as Astaroth aka Guildma, Mekotio and Ousaban to targets across Latin America and Europe. The volume of emails associated with these campaigns has significantly increase...

The Tetrade: Brazilian banking malware goes global

Introduction Brazil is a well-known country with plenty of banking trojans developed by local crooks. The Brazilian criminal underground is home to some of the worlds busiest and most creative perpetrators of cybercrime. Like their counterparts in China and Russia, their cyberattacks have a stron...

Threat Source newsletter for May 14, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. Our main focus this week is on Astaroth. This is a malware family that has been targeting Brazil with a variety of lures, including...

Threat Spotlight: Astaroth — Maze of obfuscation and evasion reveals dark stealer

By Nick Biasini, Edmund Brumaghin and Nick Lister. Cisco Talos is detailing an information stealer, Astaroth, that has been targeting Brazil with a variety of lures, including COVID-19 for the past nine to 12 months.Complex maze of obfuscation and anti-analysis/evasion techniques implemented by...

Astaroth’s New Evasion Tactics Make It 'Painful to Analyze'

The operators of the Astaroth infostealer have implemented several new tactics aimed at evading detection, which researchers say have made the malware “painful to analyze.” Astaroth first emerged in 2017, but has steadily been used over the years in increasingly sophisticated campaigns aimed at...

Latest Astaroth living-off-the-land attacks are even more invisible but not less observable

Following a short hiatus, Astaroth came back to life in early February sporting significant changes in its attack chain. Astaroth is an info-stealing malware that employs multiple fileless techniques and abuses various legitimate processes to attempt running undetected on compromised machines. Th...

Microsoft Patch Tuesday, February 2020 Edition

Microsoft today released updates to plug nearly 100 security holes in various versions of its Windows operating system and related software, including a zero-day vulnerability in Internet Explorer IE that is actively being exploited. Also, Adobe has issued a bevy of security updates for its vario...

Astaroth Spy Trojan Uses Facebook, YouTube Profiles to Cover Tracks

Facebook and YouTube profiles are at the heart of an ongoing phishing campaign spreading the Astaroth trojan, bent on the eventual exfiltration of sensitive information. The attack is sophisticated in that it uses normally trusted sources as cover for malicious activities – thus evading usually...

The Hottest Malware Hits of the Summer

It's been a summer of ransomware hold-ups, supply chain attacks and fileless attacks flying under the radar of old-school security. With malware running amok while we were lying on the beach, here's a recap of the most burning strains and trends seen in the wild during the months of July and Augu...

Canadian Centre for Cyber Security Releases Advisory on Fileless Malware

The Canadian Centre for Cyber Security CCCS has released an advisory on an Astaroth fileless malware campaign affecting Microsoft Windows. Astaroth resides solely in memory, and an attacker can use it and other fileless malware to steal information, such as credentials and keystrokes, and obtain...

Watch Out! Microsoft Spotted Spike in Astaroth Fileless Malware Attacks

Security researchers at Microsoft have released details of a new widespread campaign distributing an infamous piece of fileless malware that was primarily being found targeting European and Brazilian users earlier this year. Dubbed Astaroth , the malware trojan has been making the rounds since at...

Watch Out! Microsoft Spotted Spike in Astaroth Fileless Malware Attacks

Security researchers at Microsoft have released details of a new widespread campaign distributing an infamous piece of fileless malware that was primarily being found targeting European and Brazilian users earlier this year. Dubbed Astaroth, the malware trojan has been making the rounds since at...