PT-2025-41312

Name of the Vulnerable Software and Affected Versions CCleaner versions 5.33.6162 CCleaner Cloud versions 1.07.3191 Description CCleaner and CCleaner Cloud contained a malicious pre-entry-point loader that redirects execution to a custom loader. This loader decodes an embedded blob into shellcode...

XWorm 6.0 Returns with 35+ Plugins and Enhanced Data Theft Capabilities

Cybersecurity researchers have charted the evolution of XWorm malware, turning it into a versatile tool for supporting a wide range of malicious actions on compromised hosts. "XWorm's modular design is built around a core client and an array of specialized components known as plugins," Trellix...

New LockBit 5.0 Targets Windows, Linux, ESXi

Trend™ Research analyzed source binaries from the latest activity from notorious LockBit ransomware with their 5.0 version that exhibits advanced obfuscation, anti-analysis techniques, and seamless cross-platform capabilities for Windows, Linux, and ESXi systems...

New YiBackdoor Malware Shares Major Code Overlaps with IcedID and Latrodectus

Cybersecurity researchers have disclosed details of a new malware family dubbed YiBackdoor that has been found to share "significant" source code overlaps with IcedID and Latrodectus. "The exact connection to YiBackdoor is not yet clear, but it may be used in conjunction with Latrodectus and Iced...

New FileFix Variant Delivers StealC Malware Through Multilingual Phishing Site

Cybersecurity researchers have warned of a new campaign that's leveraging a variant of the FileFix social engineering tactic to deliver the StealC information stealer malware. "The observed campaign uses a highly convincing, multilingual phishing site e.g., fake Facebook Security page, with...

Hackers Use Facebook Ads to Spread JSCEAL Malware via Fake Cryptocurrency Trading Apps

Cybersecurity researchers are calling attention to an ongoing campaign that distributes fake cryptocurrency trading apps to deploy a compiled V8 JavaScript JSC malware called JSCEAL that can capture data such as credentials and wallets. The activity leverages thousands of malicious advertisements...

Threat Analysis: SquidLoader - Still Swimming Under the Radar

Threat Analysis: SquidLoader - Still Swimming Under the Radar By Charles Crofford · July 15, 2025 Executive summary A new wave of SquidLoader malware samples are actively targeting financial services institutions in Hong Kong. This sophisticated malware exhibits significant evasion capabilities,...

Demystifying Myth Stealer: A Rust Based InfoStealer

Demystifying Myth Stealer: A Rust Based InfoStealer By Niranjan Hegde, Vasantha Lakshmanan Ambasankar and Adarsh S · June 5, 2025 Introduction During regular proactive threat hunting, the Trellix Advanced Research Center identified a fully undetected infostealer malware sample written in Rust. Up...

New TgToxic Banking Trojan Variant Evolves with Anti-Analysis Upgrades

Cybersecurity researchers have discovered an updated version of an Android malware called TgToxic aka ToxicPanda, indicating that the threat actors behind it are continuously making changes in response to public reporting. "The modifications seen in the TgToxic payloads reflect the actors' ongoin...

Anatomy of Celestial Stealer: Malware-as-a-Service Revealed

Anatomy of Celestial Stealer: Malware-as-a-Service Revealed By Niranjan Hegde, Adarsh S and Shashikala Piddannavar · December 3, 2024 Introduction During proactive hunting, Trellix Advanced Research Center found samples belonging to Celestial Stealer, a JavaScript-based infostealer which is...

A Bag of RATs: VenomRAT vs. AsyncRAT

Introduction Remote access tools RATs have long been a favorite tool for cyber attackers, since they enable remote control over compromised systems and facilitate data theft, espionage, and continuous monitoring of victims. Among the well-known RATs are VenomRAT and AsyncRAT. These are open-sourc...

Cybercriminals Use Excel Exploit to Spread Fileless Remcos RAT Malware

Cybersecurity researchers have discovered a new phishing campaign that spreads a new fileless variant of known commercial malware called Remcos RAT. Remcos RAT "provides purchases with a wide range of advanced features to remotely control computers belonging to the buyer," Fortinet FortiGuard Lab...

New Stealer Uses Invalid Cert To Compromise Systems

New Stealer Uses Invalid Cert To Compromise Systems By Mohinder Gill, Mallikarjun Wali and Sangram Mohapatro · November 07, 2024 A new Stealer has been making the rounds. Its name: Fickle. Fickle Stealer is a new Rust-based information stealer that spreads through various attack vectors, includin...

Hackers Use Fake GlobalProtect VPN Software in New WikiLoader Malware Attack

A new malware campaign is spoofing Palo Alto Networks' GlobalProtect VPN software to deliver a variant of the WikiLoader aka WailingCrab loader by means of a search engine optimization SEO campaign. The malvertising activity, observed in June 2024, is a departure from previously observed tactics...

New macOS Malware "Cthulhu Stealer" Targets Apple Users' Data

Cybersecurity researchers have uncovered a new information stealer that's designed to target Apple macOS hosts and harvest a wide range of information, underscoring how threat actors are increasingly setting their sights on the operating system. Dubbed Cthulhu Stealer, the malware has been...

New Banshee Stealer Targets 100+ Browser Extensions on Apple macOS Systems

Cybersecurity researchers have uncovered new stealer malware that's designed to specifically target Apple macOS systems. Dubbed Banshee Stealer, it's offered for sale in the cybercrime underground for a steep price of $3,000 a month and works across both x8664 and ARM64 architectures. "Banshee...

New Phishing Campaign Deploys WARMCOOKIE Backdoor Targeting Job Seekers

Cybersecurity researchers have disclosed details of an ongoing phishing campaign that leverages recruiting- and job-themed lures to deliver a Windows-based backdoor named WARMCOOKIE. "WARMCOOKIE appears to be an initial backdoor tool used to scout out victim networks and deploy additional...

Latrodectus Malware Loader Emerges as IcedID's Successor in Phishing Campaigns

Cybersecurity researchers have observed a spike in email phishing campaigns starting early March 2024 that delivers Latrodectus, a nascent malware loader believed to be the successor to the IcedID malware. "These campaigns typically involve a recognizable infection chain involving oversized...

Hijack Loader Malware Employs Process Hollowing, UAC Bypass in Latest Version

A newer version of a malware loader called Hijack Loader has been observed incorporating an updated set of anti-analysis techniques to fly under the radar. "These enhancements aim to increase the malware's stealthiness, thereby remaining undetected for longer periods of time," Zscaler ThreatLabz...

ZLoader Malware Evolves with Anti-Analysis Trick from Zeus Banking Trojan

The authors behind the resurfaced ZLoader malware have added a feature that was originally present in the Zeus banking trojan that it's based on, indicating that it's being actively developed. "The latest version, 2.4.1.0, introduces a feature to prevent execution on machines that differ from the...