Threat Source newsletter (Oct. 24, 2019)

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. Never assume that a malware family is really dead. We’ve done it time and time again with things like Emotet, and Gustuff is proving it...

Gustuff return, new features for victims

By Vitor Ventura with contributions from Chris Neal. Executive summary The Gustuff banking trojan is back with new features, months after initially appearing targeting financial institutions in Australia. Cisco Talos first reported on Gustuff in April. Soon after, the actors behind Gustuff starte...

ZhiCms V1.0.4 suffers from a command execution vulnerability

ZhiCms is an enterprise building system based on PHP and mysql technology. ZhiCms V1.0.4 suffers from a command execution vulnerability, which is due to the system failing to effectively filter input parameters. An attacker can exploit this vulnerability to write a Trojan horse and execute it to...

Code Execution Vulnerability in ZhiCms V1.0.4

ZhiCms is an enterprise building system based on PHP and mysql technology. A code execution vulnerability exists in ZhiCms v1.0.4, which is due to the system failing to effectively filter input parameters. An attacker can exploit this vulnerability to write a Trojan horse and execute it to obtain...

ZhiCms V1.0.4 suffers from a command execution vulnerability (CNVD-2019-43081)

ZhiCms is an enterprise building system based on PHP and mysql technology. A code execution vulnerability exists in ZhiCms v1.0.4, which is due to the system failing to effectively filter input parameters. An attacker can exploit this vulnerability to write a Trojan horse and execute it to obtain...

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 11 to October 18

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Oct. 11 and Oct. 18. 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 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,...

New Reductor Nation-State Malware Compromises TLS

Kaspersky has a detailed blog post about a new piece of sophisticated malware that it's calling Reductor. The malware is able to compromise TLS traffic by infecting the computer with hacked TLS engine substituted on the fly, "marking" infected TLS handshakes by compromising the underlining...

Joomla! configuration.php file RCE vulnerability

Joomla! is an open source, cross-platform content management system CMS developed using PHP and MySQL. An RCE vulnerability exists in the Joomla! configuration.php file. An attacker can exploit the vulnerability to write a one-sentence Trojan horse and gain server privileges...

CVE-2019-16913

PC Protect Antivirus v4.14.31 installs by default to %PROGRAMFILESX86%\PCProtect with very weak folder permissions, granting any user full permission "Everyone: F" to the contents of the directory and its subfolders. In addition, the program installs a service called SecurityService that runs as...

CVE-2019-16913

PC Protect Antivirus v4.14.31 installs by default to %PROGRAMFILESX86%\PCProtect with very weak folder permissions, granting any user full permission "Everyone: F" to the contents of the directory and its subfolders. In addition, the program installs a service called SecurityService that runs as...

CVE-2008-5843

Multiple untrusted search path vulnerabilities in pdfjam allow local users to gain privileges via a Trojan horse program in 1 the current working directory or 2 /var/tmp, related to the a pdf90, b pdfjoin, and c pdfnup scripts...

New malware mimics Windows scanner to infect PCs with ransomware

By Sudais This trojan horse was discovered which pretends to be a Windows scanner by Microsoft but in reality, it is everything evil but so. This is a post from HackRead.com Read the original post: New malware mimics Windows scanner to infect PCs with ransomware...

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...

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...

HQWar: the higher it flies, the harder it drops

Mobile dropper Trojans are one of today's most rapidly growing classes of malware. In Q1 2019, droppers are in the 2nd or 3rd position in terms of share of total detected threats, while holding nearly half of all Top 20 places in 2018. Since the droppers' main task is to deliver payload while...

The State of Stalkerware in 2019

Introduction and methodology Six months ago, we created a special alert that notifies users about commercial spyware stalkerware products installed on their phones. This report examines the use of stalkerware and the number of users affected by this software in the first eight months of 2019...

Mariposa Botnet Author, Darkcode Crime Forum Admin Arrested in Germany

A Slovenian man convicted of authoring the destructive and once-prolific Mariposa botnet and running the infamous Darkode cybercrime forum has been arrested in Germany on request from prosecutors in the United States, who've recently re-indicted him on related charges. NiceHash CTO Matjaž "Iserdo...

Threat Roundup for September 20 to September 27

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Sept. 20 and Sept. 27. 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...