The past few years have seen a significant increase in the number of Rust developers. Rust is a programming language focused on performance and reliability.
However, for an attacker, its complicated assembly code is a significant merit. In May 2024, FortiGuard Labs observed a Rust-based stealer. In addition to its intricate code, the stealer is distributed using a variety of strategies and has a flexible way of choosing its target. Because of this ambiguity, we decided to call it Fickle Stealer. This article summarizes the details of this campaign, roughly dividing the attack chain into three stages: Delivery, Preparatory Work, and Packer and Stealer Payload.
Read more…
Source: Fortinet
Related:
- XCSSET Mac Malware: Infects Xcode Projects, Performs UXSS Attack on Safari, Other Browsers, Leverages Zero-day Exploits
August 13, 2020
Trend Micro has discovered an unusual infection related to Xcode developer projects. Upon further investigation, we discovered that a developer’s Xcode project at large contained the source malware, which leads to a rabbit hole of malicious payloads. Most notable in our investigation is the discovery of two zero-day exploits: one is used to steal cookies ...
- Script-Based Malware: A New Attacker Trend on Internet Explorer
August 11, 2020
Over the past few months, we have detected sophisticated script-based malware through Internet Explorer (IE) browser exploits that infect Windows Operating System (OS) users. We decided to investigate those scripts to identify their key features to demonstrate that they are attractive for attackers and so could lead to a trend worth paying attention to. Indeed, with ...
- Take a “NetWalk” on the Wild Side
August 3, 2020
The NetWalker ransomware, initially known as Mailto, was first detected in August 2019. Since then, new variants were discovered throughout 2019 and the beginning of 2020, with a strong uptick noticed in March of this year. NetWalker has noticeably evolved to a more stable and robust ransomware-as-a-service (RaaS) model, and our research suggests that the malware ...
- WastedLocker: technical analysis
July 31, 2020
The use of crypto-ransomware in targeted attacks has become an ordinary occurrence lately: new incidents are being reported every month, sometimes even more often. On July 23, Garmin, a major manufacturer of navigation equipment and smart devices, including smart watches and bracelets, experienced a massive service outage. As confirmed by an official statement later, the cause ...
- Emotet malware now steals your email attachments to attack contacts
July 29, 2020
The Emotet malware botnet is now also using stolen attachments to increase the authenticity of spam emails used for infecting targets’ systems. This is the first time the botnet is using stolen attachments to add credibility to emails as Binary Defense threat researcher James Quinn told BleepingComputer. The attachment stealer module code — that also steals email ...
- Mirai Botnet Exploit Weaponized to Attack IoT Devices via CVE-2020-5902
July 28, 2020
Following the initial disclosure of two F5 BIG-IP vulnerabilities on the first week of July, we continued monitoring and analyzing the vulnerabilities and other related activities to further understand their severities. Based on the workaround published for CVE-2020-5902, we found an internet of things (IoT) Mirai botnet downloader (detected by Trend Micro as Trojan.SH.MIRAI.BOI) that ...