New Stealthier ZLoader Variant Spreading Via Fake TeamViewer Download Ads

Users searching for TeamViewer remote desktop software on search engines like Google are being redirected to malicious links that drop ZLoader malware onto their systems while simultaneously embracing a stealthier infection chain that allows it to linger on infected devices and evade detection by...

Microsoft Office Users Face Malware-Protection Bypass

Legacy users of Microsoft Excel are being targeted in a malware campaign that uses a novel malware-obfuscation technique to disable Office defenses and deliver the Zloader trojan. The attack, according to research published Thursday by McAfee, marries functions in Microsoft Office Word and Excel ...

Hackers Use New Trick to Disable Macro Security Warnings in Malicious Office Files

While it's a norm for phishing campaigns that distribute weaponized Microsoft Office documents to prompt victims to enable macros in order to trigger the infection chain directly, new findings indicate attackers are using non-malicious documents to disable security warnings prior to executing mac...

Attackers Target Porn Site Goers in ‘Malsmoke’ Zloader Attack

Cybercriminals are tricking adult website visitors – including sites such as bravoporn.com and xhamster.com – in malvertising attacks that redirect victims to malicious websites serving up malware. The campaign, which is part of a larger malvertising effort dubbed “malsmoke”, has been tracked...

Microsoft Teams Users Under Attack in 'FakeUpdates' Malware Campaign

Attackers are using ads for fake Microsoft Teams updates to deploy backdoors, which use Cobalt Strike to infect companies’ networks with malware. Microsoft is warning its customers about the so-called “FakeUpdates” campaigns in a non-public security advisory, according to a report in Bleeping...

Threat Source newsletter for Sept. 3, 2020

Newsletter compiled by Jon Munshaw. Good afternoon, Talos readers. We recently uncovered a series of email campaigns utilizing links to malicious documents hosted on legitimate file-sharing platforms to spread malware. The campaigns distributed various malware payloads including Gozi ISFB, ZLoade...

Salfram: Robbing the place without removing your name tag

By Holger Unterbrink and Edmund Brumaghin. Threat summary Cisco Talos recently uncovered a series of email campaigns utilizing links to malicious documents hosted on legitimate file-sharing platforms to spread malware.The campaigns distributed various malware payloads including Gozi ISFB, ZLoader...

ZLoader-Laced Emails Masquerade As CVs From Job-Seekers

Cybercriminals are taking advantage of the massive uptick in unemployment across the U.S. in a recent spear-phishing campaign, which purports to be CVs sent from job-seekers – but actually spreads banking credential-stealing malware. Researchers recently uncovered emails that distributed maliciou...

Shining a light on “Silent Night” Zloader/Zbot

When it comes to banking Trojans, ZeuS is probably the most famous one ever released. Since its source code originally leaked in 2011, several new variants proliferated online. That includes a past fork called Terdot Zbot/Zloader, which we extensively covered in 2017. But recently, we observed...