Hidden Backdoors Uncovered in WordPress Malware Investigation
Dive into our investigation of WordPress malware and find out how mu-plugins are used to hide backdoor threats.
Go Module Mirror served backdoor to devs for 3+ years - Ars Technica
Supply chain attack targets developers using the Go programming language.
New TorNet backdoor seen in widespread campaign
Cisco Talos discovered an ongoing malicious campaign operated by a financially motivated threat actor targeting users, predominantly in Poland and Germany. The actor has delivered different payloads, including Agent Tesla, Snake Keylogger, and a new undocumented backdoor we are calling TorNet, dropped by PureCrypter malware. The actor is running a Windows scheduled task on victim machines—including on endpoints with a low battery—to achieve persistence. The actor also disconnects the victim machine from the network before dropping the payload and then connects it back to the network, allowing them to evade detection by cloud antimalware solutions. We also found that the actor connects the victim’s machine to the TOR network using the TorNet backdoor for stealthy command and control (C2) communications and detection evasion.
Mysterious backdoor found on select Juniper routers
Someone has been quietly backdooring selected Juniper routers around the world in key sectors including semiconductor, energy, and manufacturing, since at least mid-2023. The devices were infected with what appears to be a variant of cd00r, a publicly available "invisible backdoor" designed to operate stealthily on a victim's machine by monitoring network traffic for specific conditions before activating.
RansomHub Affiliate leverages Python-based backdoor
In an incident response in Q4 of 2024, GuidePoint Security identified evidence of a threat actor utilizing a Python-based backdoor to maintain access to compromised endpoints. The threat actor later leveraged this access to deploy RansomHub encryptors throughout the entire impacted network. ReliaQuest documented an earlier version of this malware on their website in February 2024.
Backdooring Your Backdoors - Another $20 Domain, More Governments
After the excitement of our .MOBI research, we were left twiddling our thumbs. As you may recall, in 2024, we demonstrated the impact of an unregistered domain when we subverted the TLS/SSL CA process for verifying domain ownership to give ourselves the ability to issue valid and trusted TLS/
PHP Reinfector and Backdoor Malware Target WordPress Sites
Understand the threat of PHP reinfector malware on WordPress sites, compromising plugins like Imagify and using malicious admin users.
Windows infected with backdoored Linux VMs in new phishing attacks
A new phishing campaign dubbed 'CRON#TRAP' infects Windows with a Linux virtual machine that contains a built-in backdoor to give stealthy access to corporate networks.
An Offer You Can Refuse: UNC2970 Backdoor Deployment Using Trojanized PDF Reader
UNC2970 is a cyber espionage group suspected to have a North Korea nexus.
Cisco warns of backdoor admin account in Smart Licensing Utility
Cisco has removed a backdoor account in the Cisco Smart Licensing Utility (CSLU) that can be used to log into unpatched systems with administrative privileges.
HZ Rat backdoor for macOS harvests data from WeChat and DingTalk
Kaspersky experts discovered a macOS version of the HZ Rat backdoor, which collects user data from WeChat and DingTalk messengers.
OpenSSH Backdoors
Imagine this: an OpenSSH backdoor is discovered, maintainers rush to push out a fixed release package, security researchers trade technical details on mailing lists to analyze the backdoor code. Speculation abounds on the attribution and motives of the attacker, and the tech media pounces on the story. A near miss of epic proportions, a blow to the fabric of trust underlying open source development, a stark reminder of the risks of supply-chain attacks. Equal measures brilliant and devious.
MIFARE Classic: exposing the static encrypted nonce variant... and a few hardware backdoors
We studied the most secure static encrypted nonce variant of "MIFARE Classic compatible" cards -- meant to resist all known card-only attacks -- and developed new attacks defeating it, uncovering a hardware backdoor in the process. And that's only the beginning...
Major Backdoor in Millions of RFID Cards Allows Instant Cloning
French security services firm Quarkslab has made an eye-popping discovery: a significant backdoor in millions of contactless cards made by Shanghai Fudan Microelectronics Group, a leading chip manufacturer in China.
CloudSorcerer APT uses cloud services and GitHub as C2 | Securelist
Kaspersky discovered a new APT CloudSorcerer targeting Russian government entities and using cloud services as C2, just like the CloudWizard actor.
Malvertising Campaign Leads to Execution of Oyster Backdoor
Rapid7 observed a recent malvertising campaign luring users to download malicious installers for popular software like Google Chrome and Microsoft Teams.
XZ backdoor behavior inside OpenSSH
In this article, we analyze XZ backdoor behavior inside OpenSSH, after it has achieved RSA-related function hook.
Newly discovered: BadSpace backdoor delivered by high-ranking websites
Threat actors deliver fake software updates on websites for popular browsers: Sites with a high search engine ranking are at an increased risk.
Malicious PyPI package opens backdoors on Windows, Linux, and Macs
Yet another malicious Python package has been spotted in the PyPI registry performing supply chain attacks to drop Cobalt Strike beacons and backdoors on Windows, Linux, and macOS systems.
Chinese hackers abuse VLC Media Player to launch malware loader
Security researchers have uncovered a long-running malicious campaign from hackers associated with the Chinese government who are using VLC Media Player to launch a custom malware loader.
Backdoor RAT for Windows, macOS, and Linux went undetected until now | Ars Technica
Never-before-seen, cross-platform SysJoker came from an "advanced threat actor."
Malicious PyPI package opens backdoors on Windows, Linux, and Macs
Yet another malicious Python package has been spotted in the PyPI registry performing supply chain attacks to drop Cobalt Strike beacons and backdoors on Windows, Linux, and macOS systems.
Chinese hackers abuse VLC Media Player to launch malware loader
Security researchers have uncovered a long-running malicious campaign from hackers associated with the Chinese government who are using VLC Media Player to launch a custom malware loader.
Backdoor RAT for Windows, macOS, and Linux went undetected until now | Ars Technica
Never-before-seen, cross-platform SysJoker came from an "advanced threat actor."
Kaspersky analysis of the backdoor in XZ
Kaspersky analysis of the backdoor recently found in XZ, which is used in many popular Linux distributions and in OpenSSH server process.
+92,000 Internet-facing D-Link NAS devices can be easily hacked
A researcher disclosed an arbitrary command injection and hardcoded backdoor issue in multiple end-of-life D-Link NAS models.
Over 92,000 exposed D-Link NAS devices have a backdoor account
A threat researcher has disclosed a new arbitrary command injection and hardcoded backdoor flaw in multiple end-of-life D-Link Network Attached Storage (NAS) device models.
GitHub - amlweems/xzbot: notes, honeypot, and exploit demo for the xz backdoor (CVE-2024-3094)
notes, honeypot, and exploit demo for the xz backdoor (CVE-2024-3094) - amlweems/xzbot
What we know about the xz Utils backdoor that almost infected the world
Malicious updates made to a ubiquitous tool were a few weeks away from going mainstream.
xz-utils backdoor situation
This is still a new situation. There is a lot we don't know. We don't know if there are more possible exploit paths. We only know about this one path. Please update your systems regardless. Unknown unknowns are safer than known unknowns. This is a living document. Everything in this document is made in good faith of being accurate, but like I just said; we don't know much about what's going on.