Threat Roundup for November 15 to November 22

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Nov. 15 and Nov. 22. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics...

Cryptominers, ransomware among top malware in IR engagements in Q4

By David Liebenberg and Kendall McKay. This summer’s most popular malware families were commonly seen, unsophisticated attacks, with phishing being the top infection vector, according to Cisco Talos Incident Response CTIR data. In addition to threat actors repeatedly deploying common threats like...

Threat Analysis Unit (TAU) Threat Intelligence Notification: Ramnit Banking Trojan

Ramnit Banking Trojan was first discovered in 2010 and is still evolving and staying actively as the second rank on the top banking trojan list in October 2019 as from the source post. It may be distributing via malvertising, exploit kit, spear-phishing campaign or others method to infect on the...

Double Vision: Stealthy Malware Dropper Delivers Dual RATs

A newly discovered initial-stage malware dropper has been discovered sneaking by antivirus products, with the ultimate goal of delivering a double-pronged whammy of RevengeRAT and WSH RAT payloads onto targeted Windows machines. A FortiGuard Labs team recently captured a sample file that had been...

APT33 Mounts Focused, Highly Targeted Botnet Attacks Against U.S. Victims

The Iran-linked, espionage-focused advanced threat group known as APT33 has been spotted using more than a dozen obfuscated botnets to carry out narrowly targeted attacks against government and academic targets in the Middle East, the U.S. and Asia. Each botnet, linked to its own...

Magento Warns E-Commerce Sites to Upgrade ASAP to Prevent Attacks

The popular e-commerce platform Magento is urging web administrators to install its latest security update in order to defend against malicious attacks in the wild that could exploit a critical remote code-execution vulnerability. While the company didn’t specify what kinds of potential attacks...

Microsoft works with researchers to detect and protect against new RDP exploits

On November 2, 2019, security researcher Kevin Beaumont reported that his BlueKeep honeypot experienced crashes and was likely being exploited. Microsoft security researchers collaborated with Beaumont as well as another researcher, Marcus Hutchins, to investigate and analyze the crashes and...

Experts on demand: Your direct line to Microsoft security insight, guidance, and expertise

Microsoft Threat Experts is the managed threat hunting service within Microsoft Defender Advanced Threat Protection ATP that includes two capabilities: targeted attack notifications and experts on demand. Today, we are extremely excited to share that experts on demand is now generally available a...

42 Adware Apps with 8 Million Downloads Traced Back to Vietnamese Student

First of all, if you have any of the below-listed apps installed on your Android device, you are advised to uninstall it immediately. Cybersecurity researchers have identified 42 apps on the Google Play Store with a total of more than 8 million downloads, which were initially distributed as...

Gustuff Android Banker Switches Up Technical Approach

An Instagram-initiated campaign using the Gustuff Android mobile banking trojan has rolled out in October, featuring an updated version of the malware that lowers its detection profile. How the cybercriminals are rolling out the campaign is the same as a previous offensive seen in June, according...

Threat Roundup for October 4 to October 11

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Oct. 4 and Oct. 11. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics,...

Threat Roundup for September 27 to October 4

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Sept. 27 and Oct. 4. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics...

Persistence – Registry Run Keys

Getting an initial foothold inside a network during a red team operation is a time consuming task. Therefore persistence is key to a successful red team operation as will enable the team to focus on the objectives of the engagement without losing the communication with the command and control...

Masad Spyware Uses Telegram Bots for Command-and-Control

A freshly discovered commercial spyware dubbed the “Masad Clipper and Stealer” is using Telegram bots as its command-and-control C2 hub. Masad harvests information from Windows and Android users and also comes with a full cadre of other malicious capabilities, including the ability to steal...

GandCrab Operators Resurface with REvil Malware

The malware that hit 22 Texas municipalities and various dentist offices around the country recently is likely the work of the crew behind the GandCrab ransomware – indicating that the group didn’t really retire after all. In late May, the GandCrab operators said they decided to ride off into the...

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...

PsiXBot Adds PornModule, Google DNS Service to Its Arsenal

The PsiXBot malware has made a few changes in recent weeks, including implementing Google’s DNS over HTTPS DoH and adding the blackmail-ready “PornModule” to its bag of tricks. PsiXBot is a multi-use Windows malware that has a range of capabilities, including keylogging, stealing passwords and...

New Malware Uses Windows BITS Service to Stealthy Exfiltrate Data

Cybersecurity researchers have discovered a new computer virus associated with the Stealth Falcon state-sponsored cyber espionage group that abuses a built-in component of the Microsoft Windows operating system to stealthily exfiltrate stolen data to attacker-controlled server. Active since 2012,...

CB TAU Threat Intelligence Notification: State-Sponsored Espionage Group Targeting Multiple Verticals with ‘Crosswalk’

FireEye recently reported on APT41, a Chinese state-sponsored espionage group. The group has been documented as targeting healthcare, high-tech, and telecommunications companies for traditional corporate espionage purposes. Additionally this group has also targeted companies in the video game...

Unprecedented new iPhone malware discovered

A post by Ian Beer of Google Project Zero released late yesterday evening sent the security community reeling. According to Beer, a small set of websites had been hacked in February and were being used to attack iPhones, infecting them with malware. These sites, which see thousands of visitors pe...