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:
- Riding Dragons: capa Harnesses Ghidra
February 14, 2024
capa is the FLARE team’s open source tool that detects capabilities in executable files. Ghidra is an open source software reverse engineering framework created and maintained by the National Security Agency Research Directorate. With the release of capa v7, Mandian researchers have integrated capa with Ghidra, bringing capa’s detection capabilities directly to Ghidra’s user interface. With ...
- TicTacToe Dropper
February 14, 2024
While analyzing malware samples collected from several victims, the FortiGuard team identified a grouping of malware droppers used to deliver various final-stage payloads throughout 2023. Malware droppers are malicious software designed to deliver and execute additional malware on a victim system and are employed to obfuscate final payloads during load and initial execution. Droppers within this ...
- Python Info-stealer Distributed by Malicious Excel Document
February 5, 2024
In January 2024, FortiGuard Labs obtained an Excel document distributing an info-stealer. From the fingerprints in this attack, it is related to a Vietnamese-based group that was first reported on in August 2023 and again in September. The attack stages before the info-stealer are simple downloaders that increase the difficulty of detection. This article introduces each stage ...
- Another Phobos Ransomware Variant Launches Attack – FAUST
January 25, 2024
The Phobos ransomware family is a notorious group of malicious software designed to encrypt files on a victim’s computer. It emerged in 2019 and has since been involved in numerous cyber attacks. This ransomware typically appends encrypted files with a unique extension and demands a ransom payment in cryptocurrency for the decryption key. FortiGuard Labs has ...
- Mexican Banks and Cryptocurrency Platforms Targeted With AllaKore RAT
January 24, 2024
A financially motivated threat actor is targeting Mexican banks and cryptocurrency trading entities with custom packaged installers delivering a modified version of AllaKore RAT – an open-source remote access tool. Lures use Mexican Social Security Institute (IMSS) naming schemas and links to legitimate, benign documents during the installation process. The AllaKore RAT payload is heavily modified ...
- A lightweight method to detect potential iOS malware
January 16, 2024
In 2021 and 2022, Kaspersky researchers had the privilege of working on a few Pegasus malware infections on several iPhone devices. The iPhones were Initially given to them by their partners for general security checks before the researchers discovered the infections. Investigating such cases can be complicated, costly, or time consuming due to the nature of ...