Iranian APT is targeting Middle Eastern Aerospace and Telecommunications companies

THREAT LEVEL: Amber. For a detailed advisory, download the pdf file here. ShellClient is a powerful new Remote Access Trojan RAT that was used in highly targeted attacks on a select few Aerospace and Telecommunications firms, primarily in the Middle East, with other victims in the United States,...

This Week in Security News - September 24, 1021

Water Basilik Uses New HCrypt Variant to Flood Victims With RAT Payloads & Biden Administration Issues Sanctions To Counter Ransomware...

Operation “Armor Piercer:” Targeted attacks in the Indian subcontinent using commercial RATs

By Asheer Malhotra, Vanja Svajcer and Justin Thattil. Cisco Talos is tracking a campaign targeting government personnel in India using themes and tactics similar to APT36 aka Mythic Leopard and Transparent Tribe.This campaign distributes malicious documents and archives to deliver the Netwire...

Water Basilisk Uses New HCrypt Variant to Flood Victims with RAT Payloads

In this blog entry we look into a fileless campaign that used a new HCrypt variant to distribute numerous remote access trojans RATs in victim systems. This new variant also uses an updated obfuscation mechanism which we detail...

Malware Attack on Aviation Sector Uncovered After Going Unnoticed for 2 Years

A targeted phishing campaign aimed at the aviation industry for two years may be spearheaded by a threat actor operating out of Nigeria, highlighting how attackers can carry out small-scale cyber offensives for extended periods of time while staying under the radar. Cisco Talos dubbed the malware...

golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents

A flaw was found in Go, where it attempts to allocate excessive memory. This issue may cause panic or unrecoverable fatal error if passed inputs with very large exponents. The highest threat from this vulnerability is to system availability...

Experts Uncover Mobile Spyware Attacks Targeting Kurdish Ethnic Group

Cybersecurity researchers on Tuesday released new findings that reveal a year-long mobile espionage campaign against the Kurdish ethnic group to deploy two Android backdoors that masquerade as legitimate apps. Active since at least March 2020, the attacks leveraged as many as six dedicated Facebo...

golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents

A flaw was found in Go, where it attempts to allocate excessive memory. This issue may cause panic or unrecoverable fatal error if passed inputs with very large exponents. The highest threat from this vulnerability is to system availability...

Talos Takes Ep: #65: How several RAT campaigns in Latin America are connected

By Jon Munshaw. The latest episode of Talos Takes is available now. Download this episode and subscribe to Talos Takes using the buttons below, or visit the Talos Takes page. As more people around the world start to get vaccinated against COVID-19, travel is becoming easier, especially during...

Konni RAT variant targeting Russia in ongoing attack campaign

By Waqas So far, Konni RAT has managed to evade detection as only 3 security solutions on VirusTotal were able to detect the malware. This is a post from HackRead.com Read the original post: Konni RAT variant targeting Russia in ongoing attack campaign...

WordPress Sites Abused in Aggah Spear-Phishing Campaign

Threat actors are using compromised WordPress websites to target manufacturers across Asia with a new spear-phishing campaign that delivers the Warzone RAT, a commodity infostealer available widely for purchase on criminal forums, researchers have found. The threat group Aggah, believed to be...

Threat Source newsletter (Aug. 12, 2021)

Newsletter compiled by Jon Munshaw.Good afternoon, Talos readers. No, that's not Ratatouille. It's ServHelper, who is much more dangerous albeit just as cute as the cartoon chef. We have a new blog post out today detailing this RAT, run by the threat actor Group TA505, that is... This is only the...

Signed MSI files, Raccoon and Amadey are used for installing ServHelper RAT

By Vanja Svajcer. News summaryGroup TA505 has been active for at least seven years, making wide-ranging connections with other threat actors involved in ransomware, stealing credit card numbers and exfiltrating data. One of the common tools in TA505's arsenal is ServHelper. In mid-June, Cisco...

golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents

A flaw was found in Go, where it attempts to allocate excessive memory. This issue may cause panic or unrecoverable fatal error if passed inputs with very large exponents. The highest threat from this vulnerability is to system availability...

DEBIAN-CVE-2021-33198

In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method...

UBUNTU-CVE-2021-33198

In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method...

CVE-2021-33198

In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method...

A week in security (July 26 – August 1)

Last week on Malwarebytes Labs: OSX.XLoader hides little except its main purpose: What we learned in the installation process. The Clubhouse database “breach” is likely a non-breach. Here’s why. Kaseya Unitrends has unpatched vulnerabilities that could help attackers expand a breach. UDP Technolo...

Crimea “manifesto” deploys VBA Rat using double attack vectors

This blog post was authored by Hossein Jazi. On July 21, 2021, we identified a suspicious document named "Манифест.docx" "Manifest.docx" that downloads and executes two templates: one is macro-enabled and the other is an html object that contains an Internet Explorer exploit. While both technique...

Chinese Hackers Implant PlugX Variant on Compromised MS Exchange Servers

A Chinese cyberespionage group known for targeting Southeast Asia leveraged flaws in the Microsoft Exchange Server that came to light earlier this March to deploy a previously undocumented variant of a remote access trojan RAT on compromised systems. Attributing the intrusions to a threat actor...