Popular Malware Families Using 'Process Doppelgänging' to Evade Detection

The fileless code injection technique called Process Doppelgänging is actively being used by not just one or two but a large number of malware families in the wild, a new report shared with The Hacker News revealed. Discovered in late 2017, Process Doppelgänging is a fileless variation of Process...

SWEED: Exposing years of Agent Tesla campaigns

By Edmund Brumaghin and other Cisco Talos researchers. Executive summary Cisco Talos recently identified a large number of ongoing malware distribution campaigns linked to a threat actor we're calling "SWEED," including such notable malware as Formbook, Lokibot and Agent Tesla. Based on our...

New FormBook Dropper Harbors Obfuscation, Persistence

Researchers are warning that a future data-theft attack may be brewing after discovering a new sample of the FormBook malware, with a never-before-seen dropper — i.e. a malicious file that is used in the initial infection stage and installs malware on the system. FormBook, a browser form-stealer...

Threat Source (April 18): New attacks distribute Formbook, LokiBot

Newsletter compiled by Jonathan Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. If you haven’t yet, there’s still time to register for this year’s Talos Threat Research Summit — our second annual conference by...

Cyber Security Week in Review (Feb. 1)

Welcome to this week's Cyber Security Week in Review, where Cisco Talos runs down all of the news we think you need to know in the security world. For more news delivered to your inbox every week, sign up for our Threat Source newsletter here. Top headlines this week Apple revoked a set of...

Old dog, new tricks - Analysing new RTF-based campaign distributing Agent Tesla, Loki with PyREbox

This blog post was authored by Edmund Brumaghin and Holger Unterbrink with contributions from Emmanuel Tacheau. Executive Summary Cisco Talos has discovered a new malware campaign that drops the sophisticated information-stealing trojan called "Agent Tesla," and other malware such as the Loki...

My Little FormBook

This blog post is authored by Warren Mercer and Paul Rascagneres. Summary Cisco Talos has been tracking a new campaign involving the FormBook malware since May 2018 that utilizes four different malicious documents in a single phishing email. FormBook is an inexpensive stealer available as "malwar...

Word Attachment Delivers FormBook Malware, No Macros Required

A new wave of document attacks targeting inboxes do not require enabling macros in order for adversaries to trigger an infection chain that ultimately delivers FormBook malware. Researchers at Menlo Security are reporting a wave of attacks that began last month that are targeting financial and...

Significant FormBook Distribution Campaigns Impacting the U.S. and South Korea

We observed several high-volume FormBook malware distribution campaigns primarily taking aim at Aerospace, Defense Contractor, and Manufacturing sectors within the U.S. and South Korea during the past few months. The attackers involved in these email campaigns leveraged a variety of distribution...

Significant FormBook Distribution Campaigns Impacting the U.S. and South Korea

We observed several high-volume FormBook malware distribution campaigns primarily taking aim at Aerospace, Defense Contractor, and Manufacturing sectors within the U.S. and South Korea during the past few months. The attackers involved in these email campaigns leveraged a variety of distribution...

FormBook—Cheap Password Stealing Malware Used In Targeted Attacks

It seems sophisticated hackers have changed the way they conduct targeted cyber operations—instead of investing in zero-days and developing their malware; some hacking groups have now started using ready-made malware just like script kiddies. Possibly, this could be a smart move for state-sponsor...

KLA11024 Defense-in-Depth Update for Microsoft Office

An unspecified vulnerability was found in the EPS Encapsulated PostScript filter in Microsoft Office. By exploiting this vulnerability malicious users can possibly execute arbitrary code. This vulnerability can be exploited remotely via a specially designed website or file. NB: This vulnerability...