Researchers Unveil New Linux Malware Linked to Chinese Hackers

Cybersecurity researchers on Wednesday shed light on a new sophisticated backdoor targeting Linux endpoints and servers that's believed to be the work of Chinese nation-state actors. Dubbed "RedXOR" by Intezer, the backdoor masquerades as a polkit daemon, with similarities found between the malwa...

D-Link, IoT Devices Under Attack By Tor-Based Gafgyt Variant

Researchers have discovered what they say is the first variant of the Gafgyt botnet family to cloak its activity using the Tor network. Gafgyt, a botnet that was uncovered in 2014, has become infamous for launching large-scale distributed denial-of-service DDoS attacks. Researchers first discover...

New SUNSHUTTLE Second-Stage Backdoor Uncovered Targeting U.S.-Based Entity; Possible Connection to UNC2452

Executive Summary In August 2020, a U.S.-based entity uploaded a new backdoor that we have named SUNSHUTTLE to a public malware repository. SUNSHUTTLE is a second-stage backdoor written in GoLang that features some detection evasion capabilities. Mandiant observed SUNSHUTTLE at a victim compromis...

Various Malware Lurks in Discord App to Target Gamers

A rise in online gaming, tied to pandemic-mandated social distancing, has led to a spike in criminals targeting the demographic. The latest effort to exploit the trend is malicious files planted inside the Discord platform designed to trick users into downloading malware-laced files. Researchers...

Microsoft Exchange Attack Exposes New xHunt Backdoors

Two never-before-seen Powershell backdoors have been uncovered, after researchers recently discovered an attack on Microsoft Exchange servers at an organization in Kuwait . The activity is tied back to the known xHunt threat group, which was first discovered in 2018 and has previously launched an...

Firestarter Android Malware Abuses Google Firebase Cloud Messaging

An APT group is starting fires with a new Android malware loader, which uses a legitimate Google messaging service to bypass detection. The malware, dubbed “Firestarter,” is used by an APT threat group called “DoNot.” DoNot uses Firebase Cloud Messaging FCM, which is a cross-platform cloud soluti...

IAmTheKing and the SlothfulMedia malware family

On October 1, 2020, the DHS CISA agency released information about a malware family called SlothfulMedia, which they attribute to a sophisticated threat actor. We have been tracking this set of activity through our private reporting service, and we would like to provide the community with...

CactusPete APT group’s updated Bisonal backdoor

CactusPete also known as Karma Panda or Tonto Team is an APT group that has been publicly known since at least 2013. Some of the groups activities have been previously described in public by multiple sources. We have been investigating and privately reporting on this groups activity for years as...

Espionage Group Hits U.S. Utilities with Sophisticated Spy Tool

The APT known as TA410 has added a modular remote-access trojan RAT to its espionage arsenal, deployed against Windows targets in the United States’ utilities sector. According to researchers at Proofpoint, the RAT, called FlowCloud, can access installed applications and control the keyboard,...

Unknown 'WildPressure' Malware Campaign Lets Off Steam in Middle East

A malware campaign that shares no known similarities to previous attacks has been uncovered, targeting organizations in the Middle East. Dubbed “WildPressure,” the campaign used a previously unknown malware that researchers named Milum, after the C++ class names inside the code. According to...

Loda RAT Grows Up

By Chris Neal. Over the past several months, Cisco Talos has observed a malware campaign that utilizes websites hosting a new version of Loda, a remote access trojan RAT written in AutoIT. These websites also host malicious documents that begin a multi-stage infection chain which ultimately serve...

Platinum APT Shines Up New Titanium Backdoor

APT threat group Platinum has a shiny new plaything: A custom trojan backdoor dubbed Titanium. The backdoor’s name, aside from keeping with the silvery metal theme, comes from password to one of the self-executable archives found in the code. According to Kaspersky researchers who analyzed the...

UPDATE: Covenant v0.4

Yesterday, Covenant v0.4 was released. My last about Covenant was titled Covenant v0.3.2. Majorly, this version provides options that allow developers to integrate custom C2 communication protocols into an operation within Covenant. This version really makes the development of new listeners is mu...

Virus Bulletin 2019: Geost Android Botnet Goes After Millions of Euros

LONDON — A powerful Android botnet dubbed Geost has been spotted targeting Russian citizens, with the end goal of distributing a banking trojan to victims. The botnet has infected more than 800,000 Android devices, controlling several million Euros held in five banks, according to researchers fro...

ViceLeaker Operation: mobile espionage targeting Middle East

In May 2018, we discovered a campaign targeting dozens of mobile Android devices belonging to Israeli citizens. Kaspersky spyware sensors caught the signal of an attack from the device of one of the victims; and a hash of the APK involved Android application was tagged in our sample feed for...

Sorpresa! JasperLoader targets Italy with a new bag of tricks

Nick Biasini and Edmund Brumaghin authored this blog post. Executive summary Over the past few months, a new malware loader called JasperLoader has emerged that targets Italy and other European countries with banking trojans such as Gootkit. We recently released a comprehensive analysis of the...

CB TAU Threat Intelligence Notification – Recent Emotet Campaign Leverages Phishing, PDFs & Droppers Impersonating Legitimate Applications

This past week, CB ThreatSight analysts were investigating suspicious events in an environment. This customer had installed the CB Defense sensor on a subset of systems in monitor only mode for evaluation. While investigating suspicious events, a CB ThreatSight analyst uncovered a new Emotet...

WinRAR Zero-day Abused in Multiple Campaigns

WinRAR, an over 20-year-old file archival utility used by over 500 million users worldwide, recently acknowledged a long-standing vulnerability in its code-base. A recently published path traversal zero-day vulnerability, disclosed in CVE-2018-20250 by Check Point Research, enables attackers to...

TAU Threat Intelligence Notification: DarkHydrus/RogueRobin

Recently, Palo Alto Unit 42 released an updated report regarding new DarkHydrus delivery documents, which includes the installation of an updated variant of the RogueRobin trojan. This document includes details on both DarkHydrus and RogueRobin, along with detection rules and search queries that...

TAU Threat Intelligence Notification – Crypt0r Ransomware

Summary Crypt0r ransomware is a new strain of ransomware that operates similar to WannaCry and NotPetya. When executed, it first checks for a hardcoded mutex value, and if it isn’t found, creates it as “crypt0r-mutex”. It then retrieves the temporary path of the currently logged in user, and...