Microsoft Confirms PaperCut Servers Used to Deliver LockBit and Cl0p Ransomware

Microsoft has confirmed that the active exploitation of PaperCut servers is linked to attacks that are designed to deliver Cl0p and LockBit ransomware families. The tech giant's threat intelligence team is attributing a subset of the intrusions to a financially motivated actor it tracks under the...

Chinese Hackers Spotted Using Linux Variant of PingPull in Targeted Cyberattacks

The Chinese nation-state group dubbed Alloy Taurus is using a Linux variant of a backdoor called PingPull as well as a new undocumented tool codenamed Sword2033. That's according to findings from Palo Alto Networks Unit 42, which discovered recent malicious cyber activity carried out by the group...

Chinese Hackers Spotted Using Linux Variant of PingPull in Targeted Cyberattacks

The Chinese nation-state group dubbed Alloy Taurus is using a Linux variant of a backdoor called PingPull as well as a new undocumented tool codenamed Sword2033. That's according to findings from Palo Alto Networks Unit 42, which discovered recent malicious cyber activity carried out by the group...

Striker - A Command And Control (C2)

Striker is a simple Command and Control C2 program. Disclaimer This project is under active development. Most of the features are experimental, with more to come. Expect breaking changes. Features A Agents Native agents for linux and windows hosts. Self-contained, minimal python agent should you...

New Zaraza Bot Credential-Stealer Sold on Telegram Targeting 38 Web Browsers

A novel credential-stealing malware called Zaraza bot is being offered for sale on Telegram while also using the popular messaging service as a command-and-control C2. "Zaraza bot targets a large number of web browsers and is being actively distributed on a Russian Telegram hacker channel popular...

Uncommon infection methods—part 2

Introduction Although ransomware is still a hot topic on which we will keep on publishing, we also investigate and publish about other threats. Recently we explored the topic of infection methods, including malvertising and malicious downloads. In this blog post, we provide excerpts from the rece...

PT-2023-5279 · Tp Link · Tp-Link Archer C2 +2

Name of the Vulnerable Software and Affected Versions: TP-Link Archer C50 version Archer C50US V2 160801 TP-Link Archer C20 version Archer C20 V1 150707 TP-Link Archer C2 version Archer C2 US V1 170228 Description: The issue is related to a buffer overflow in the Wi-Fi router's firmware when...

Cryptocurrency Companies Targeted in Sophisticated 3CX Supply Chain Attack

The adversary behind the supply chain attack targeting 3CX deployed a second-stage implant specifically singling out a small number of cryptocurrency companies. Russian cybersecurity firm Kaspersky, which has been internally tracking the versatile backdoor under the name Gopuram since 2020, said ...

RedditC2 - Abusing Reddit API To Host The C2 Traffic, Since Most Of The Blue-Team Members Use Reddit, It Might Be A Great Way To Make The Traffic Look Legit

Abusing Reddit API to host the C2 traffic, since most of the blue-team members use Reddit, it might be a great way to make the traffic look legit.  Disclaimer: Use of this project is for Educational/Testing purposes only. Using it on unauthorised machines is strictly forbidden. If somebody is...

Not just an infostealer: Gopuram backdoor deployed through 3CX supply chain attack

On March 29, Crowdstrike published a report about a supply chain attack conducted via 3CXDesktopApp, a popular VoIP program. Since then, the security community has started analyzing the attack and sharing their findings. The following has been discovered so far: The infection is spread via...

Threat Advisory: 3CX Softphone Supply Chain Compromise

Cisco Talos is tracking and actively responding to a supply chain attack involving the 3CX Desktop Softphone application. This is a multi-stage attack that involves sideloading DLLs, seven-day sleep routines, and additional payloads dependent on a now-removed GitHub repository for Windows-based...

Backdoored 3CXDesktopApp Installer Used in Active Threat Campaign

Emergent threats evolve quickly. We will update this blog with new information as it comes to light and we are able to verify it. Erick Galinkin, Ted Samuels, Zach Dayton, Eoin Miller, Caitlin Condon, Stephen Fewer, Spencer McIntyre, and Christiaan Beek all contributed to this blog. On Wednesday,...

NimPlant - A Light-Weight First-Stage C2 Implant Written In Nim

ByCas van Cooten @chvancooten, with special thanks to some awesome folks: Fabian Mosch @S3cur3Th1sSh1t for sharing dynamic invocation implementation in Nim and the Ekko sleep mask function snovvcrash @snovvcrash for adding the initial version of execute-assembly & self-deleting implant option...

BianLian ransomware ramps up data-leak extortion and improves operational security

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary BianLian ransomware group is ramping up data-leak extortion to extract payments, using similar tactics & a custom backdoor, and bringing 30 new C2 servers online monthly. To receive real-time threat...

SYS01stealer: New Threat Using Facebook Ads to Target Critical Infrastructure Firms

Cybersecurity researchers have discovered a new information stealer dubbed SYS01stealer targeting critical government infrastructure employees, manufacturing companies, and other sectors since November 2022. "The threat actors behind the campaign are targeting Facebook business accounts by using...

SysUpdate Malware Strikes Again with Linux Version and New Evasion Tactics

The threat actor known as Lucky Mouse has developed a Linux version of a malware toolkit called SysUpdate, expanding on its ability to target devices running the operating system. The oldest version of the updated artifact dates back to July 2022, with the malware incorporating new features...

Threat Actors Adopt Havoc Framework for Post-Exploitation in Targeted Attacks

An open source command-and-control C2 framework known as Havoc is being adopted by threat actors as an alternative to other well-known legitimate toolkits like Cobalt Strike, Sliver, and Brute Ratel. Cybersecurity firm Zscaler said it observed a new campaign in the beginning of January 2023...

MyloBot Botnet Spreading Rapidly Worldwide: Infecting Over 50,000 Devices Daily

A sophisticated botnet known as MyloBot has compromised thousands of systems, with most of them located in India, the U.S., Indonesia, and Iran. That's according to new findings from BitSight, which said it's "currently seeing more than 50,000 unique infected systems every day," down from a high ...

Researchers Discover Numerous Samples of Information Stealer 'Stealc' in the Wild

A new information stealer called Stealc that's being advertised on the dark web could emerge as a worthy competitor to other malware of its ilk. "The threat actor presents Stealc as a fully featured and ready-to-use stealer, whose development relied on Vidar, Raccoon, Mars, and RedLine stealers,"...

Researchers Warn of ReverseRAT Backdoor Targeting Indian Government Agencies

A spear-phishing campaign targeting Indian government entities aims to deploy an updated version of a backdoor called ReverseRAT. Cybersecurity firm ThreatMon attributed the activity to a threat actor tracked as SideCopy. SideCopy is a threat group of Pakistani origin that shares overlaps with...