Threats Tagged 'rat'

BlueShell is an open-source remote access trojan developed in Go language, primarily used by Chinese-based threat actors. A variant of BlueShell has been identified in post-intrusion activities by APT groups including BlackTech, targeting organizations in Japan, South Korea, and Thailand. This variant differs from the original through a dedicated dropper mechanism, proxy server-based C2 communication, and anti-forensic capabilities. The dropper deploys the variant to /tmp/kthread, disguises it as a Linux kernel worker process, and removes filesystem traces. Recent variants observed since 2024 include XOR-encoded configuration data and proxy functionality, indicating continuous development. The malware performs hostname verification, validates C2 certificates, and implements commands for file transfer, remote shell, and SOCKS5 proxy capabilities.

MediumMalwareIndonesiaJapanSingapore+2#anti-forensic#apt#proxy communication

A newly discovered Windows stealer and remote access trojan called Dolphin X targets over 300 applications including browsers, cryptocurrency wallets, password managers, and cloud command-line tools. The malware collects credentials ranging from browser logins to SSH keys, .env files, and cloud tokens. A distinctive feature called the AI Profiler automatically scores infected victims based on application usage, browsing activity, and installed software, helping attackers identify high-value targets through daily summaries. The malware builder operates through a remote server that compiles agents and offers optional mutation engines to evade detection. Advertised by a vendor using the alias Kontraktnik, Dolphin X poses significant risk to developers and organizations by potentially exposing access to entire production environments through compromised DevOps credentials.