Researchers Discover Raindrop — 4th Malware Linked to the SolarWinds Attack

Cybersecurity researchers have unearthed a fourth new malware strain—designed to spread the malware onto other computers in victims' networks—which was deployed as part of the SolarWinds supply chain attack disclosed late last year. Dubbed "Raindrop" by Broadcom-owned Symantec, the malware joins...

Injecting a Backdoor into SolarWinds Orion

Crowdstrike is reporting on a sophisticated piece of malware that was able to inject malware into the SolarWinds build process: Key Points SUNSPOT is StellarParticles malware used to insert the SUNBURST backdoor into software builds of the SolarWinds Orion IT management product. SUNSPOT monitors...

Microsoft Spooler Local Privilege Elevation Exploit

This exploit leverages a file write vulnerability in the print spooler service which will restart if stopped. Because the service cannot be stopped long enough to remove the dll, there is no way to remove the dll once it is loaded by the service. Essentially, on default settings, this module adds...

Microsoft Spooler Local Privilege Elevation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework require 'msf/core/post/windows/powershell' class MetasploitModule 'Microsoft Spooler Local Privilege Elevation Vulnerability', 'Description' = %q This exploit leverages ...

Backdoor.Win32.Nucleroot.t MaskPE 1.6 Local Buffer Overflow

Discovery / credits: Malvuln - malvuln.com c 20211 Original source: https://malvuln.com/advisory/170d3ccf9f036c552aef6690bf419b2e.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Nucleroot.t - MaskPE 1.6 Vulnerability: File Based Buffer Overflow Description:...

Researchers Disclose Undocumented Chinese Malware Used in Recent Attacks

Cybersecurity researchers have disclosed a series of attacks by a threat actor of Chinese origin that has targeted organizations in Russia and Hong Kong with malware — including a previously undocumented backdoor. Attributing the campaign to Winnti or APT41, Positive Technologies dated the first...

Researchers Disclose Undocumented Chinese Malware Used in Recent Attacks

Cybersecurity researchers have disclosed a series of attacks by a threat actor of Chinese origin that has targeted organizations in Russia and Hong Kong with malware — including a previously undocumented backdoor. Attributing the campaign to Winnti or APT41, Positive Technologies dated the first...

Increasing resilience against Solorigate and other sophisticated attacks with Microsoft Defender

­Even as investigations into the sophisticated attack known as Solorigate are still underway, details and insights about the tools, patterns, and methods used by the attackers point to steps that organizations can take to improve their defenses against similar attacks. Solorigate is a cross-domai...

Unveiled: SUNSPOT Malware Was Used to Inject SolarWinds Backdoor

As the investigation into the SolarWinds supply-chain attack continues, cybersecurity researchers have disclosed a third malware strain that was deployed into the build environment to inject the backdoor into the company's Orion network monitoring platform. Called "Sunspot," the malignant tool ad...

Unveiled: SUNSPOT Malware Was Used to Inject SolarWinds Backdoor

As the investigation into the SolarWinds supply-chain attack continues, cybersecurity researchers have disclosed a third malware strain that was deployed into the build environment to inject the backdoor into the company's Orion network monitoring platform. Called "Sunspot," the malignant tool ad...

Backdoor.Win32.Zombam.a Remote Stack Buffer Overflow

Discovery / credits: malvuln - Malvuln.com c 2021 Original source: https://malvuln.com/advisory/6c5081e9b65a52963b0b1ae612ef7eb4.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Zombam.a Vulnerability: Remote Stack Buffer Overflow Description: The malware listens...

Researchers Find Links Between Sunburst and Russian Kazuar Malware

Cybersecurity researchers, for the first time, may have found a potential connection between the backdoor used in the SolarWinds hack to a previously known malware strain. In new research published by Kaspersky researchers today, the cybersecurity firm said it discovered several features that...

Researchers Find Links Between Sunburst and Russian Kazuar Malware

Cybersecurity researchers, for the first time, may have found a potential connection between the backdoor used in the SolarWinds hack to a previously known malware strain. In new research published by Kaspersky researchers today, the cybersecurity firm said it discovered several features that...

Sunburst backdoor – code overlaps with Kazuar

Introduction On December 13, 2020, FireEye published a blog post detailing a supply chain attack leveraging Orion IT, an infrastructure monitoring and management platform by SolarWinds. In parallel, Volexity published an article with their analysis of related attacks, attributed to an actor named...

Backdoor.Win32.Levelone.b Remote Stack Buffer Overflow

Discovery / credits: malvuln - Malvuln.com c 2021 Original source: https://malvuln.com/advisory/3f82e6ddc9f5242f5af200d2fbae4ce4.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Levelone.b Vulnerability: Remote Stack Buffer Overflow Description: The backdoor...

Backdoor in Zyxel Firewalls and Gateways

This is bad: More than 100,000 Zyxel firewalls, VPN gateways, and access point controllers contain a hardcoded admin-level backdoor account that can grant attackers root access to devices via either the SSH interface or the web administration panel. … Installing patches removes the backdoor...

Drow - Injects Code Into ELF Executables Post-Build

drow is a command-line utility that is used to inject code and hook the entrypoint of ELF executables post-build. It takes unmodified ELF executables as input and exports a modified ELF contianing an embedded user-supplied payload that executes at runtime. Slightly more detail ... Drow takes the...

A week in security (December 28 – January 3)

First off we would like to wish all our readers a happy and secure 2021! Last week on Malwarebytes Labs we presented an overview of developments in the SearchDimension hijackers, we looked at the most enticing cyberattacks of 2020, and we also looked back at the strangest cybersecurity events of...

Win32 Backdoor 2019-02-ARTRADOWNLOADER SEH Buffer Overflow

Discovery / credits: malvuln - Malvuln.com c 2021 Original source: http://malvuln.com/advisory/8d42c01180be7588a2a68ad96dd0cf85.txt Contact: [email protected] Media: twitter.com/malvuln Threat: WIN32 BACKDOOR - 2019-02-ARTRADOWNLOADER Vulnerabilities: Remote SEH Buffer Overflow and Insecure...

Backdoor account found in 100,000+ Zyxel Firewalls, VPN Gateways

By Deeba Ahmed Researchers have discovered a hard-coded admin-level backdoor account as a Zyxel firmware binary revealing username and password. This is a post from HackRead.com Read the original post: Backdoor account found in 100,000+ Zyxel Firewalls, VPN Gateways...