Tag: linux

Akira ransomware has established itself as a prominent threat, constantly evolving its tactics. Initially employing double-extortion, it shifted focus to data exfiltration in early 2024. The group developed a Rust variant of their ESXi encryptor, moving away from C++. Recently, Akira has returned t…

The Beast Ransomware group, active since 2022, offers a Ransomware-as-a-Service (RaaS) platform with constant updates. It supports Windows, Linux, and ESXi systems, providing affiliates with customizable binary options. Beast employs advanced encryption methods, including Elliptic-curve and ChaCha2…

A recent analysis reveals a new variant of the FASTCash malware, designed to compromise financial networks by manipulating payment transactions. Developed by threat actors potentially linked to North Korean hacking groups, this Linux version specifically targets Ubuntu 20.04 systems in ATMs. It int…

A newly identified variant of FASTCash "payment switch" malware specifically targets the Linux operating system, as well as Microsoft Windows, according to CISA and the Department of Homeland Security (DHS).

Lynx ransomware, discovered in July 2024, is a successor to INC ransomware targeting organizations in retail, real estate, architecture, and financial services in the U.S. and UK. It shares significant source code with INC and operates as a ransomware-as-a-service model. Lynx employs double extorti…

A new stealthy Linux malware called perfctl has been analyzed. The malware runs two processes: perfctl and a disguised process mimicking known Linux processes. It uses Tor for external communications and local sockets for inter-process communication. After 30 minutes, the attacker drops scripts to …

A sophisticated Linux malware named 'perfctl' has been actively targeting millions of servers worldwide for the past 3-4 years. It exploits over 20,000 types of misconfigurations to compromise Linux systems. The malware employs advanced evasion techniques, including rootkits, process masquerading, …

This investigation tracked infrastructure linked to the APT group Transparent Tribe, identifying 15 malicious hosts on DigitalOcean serving as command-and-control servers for the Mythic exploitation framework. The group employs Linux desktop entry files as an attack vector, targeting individuals in…

Aqua Nautilus researchers identified a Linux malware, named Hadooken, targeting Oracle WebLogic servers. Upon gaining initial access through an exploited weak password, Hadooken deploys a cryptominer and the Tsunami malware. The report details the attack flow, techniques employed by the threat acto…

A critical security flaw in the Open Geospatial Consortium (OGC) GeoServer server has been exploited by cyber-attackers to gain control of vulnerable systems, according to FortiGuard Labs.

Stroz Friedberg discovered sedexp, a stealthy Linux malware that utilizes udev rules to achieve persistence and evade detection. It provides reverse shell capabilities and advanced concealment tactics. Employed by a financially motivated threat actor, sedexp hides credit card scraping code, indicat…

An in-depth analysis examined a threat actor utilizing Akira ransomware to compromise a Latin American airline. The attacker gained initial network access via SSH, exploiting a vulnerability in Veeam backup software, and subsequently exfiltrated critical data before deploying the ransomware payload…

This report analyzes how threat actors can exploit misconfigured Jenkins servers to execute malicious Groovy scripts, leading to activities like deploying cryptocurrency miners. Misconfigurations exposing the /script endpoint allow remote code execution, enabling attackers to run scripts that downl…

Volexity identified a cyber-espionage campaign by a suspected Pakistan-based threat actor tracked as UTA0137 targeting government entities in India. The campaign leveraged the DISGOMOJI malware, a Golang-based Linux trojan that uses Discord for command and control via emojis. Key capabilities inclu…

This analysis uncovers the use of Kiteshield packer by various cybercriminal groups to evade detection on Linux platforms. The researchers reverse-engineered samples from APT group Winnti, cybercrime group DarkMosquito, and a script kiddie operation, revealing Kiteshield's anti-debugging techniques…

Symantec's Threat Hunter Team has uncovered a new Linux backdoor, named Gomir, developed by the North Korean Springtail espionage group, which is linked to malware employed in a recent campaign targeting organizations in South Korea. The backdoor shares extensive code similarities with the Windows-…

The Ebury malware gang is continuing to expand, with hundreds of thousands of servers compromised and used to steal cryptocurrency and credit card data, according to a paper published by ESET Research on 14 May 2024.

In April 2024, FortiGuard Labs observed a new botnet exploiting a nearly decade-old D-Link vulnerability to take control of devices and incorporate them into a botnet used to launch attacks. The malware, named Goldoon, establishes persistence and connects to a C2 server to receive commands, includi…

This analysis examines a recurring Linux trojan called Xorddos, which is a distributed denial-of-service (DDoS) malware. It provides details on various file hashes associated with the malware, as well as indicators of compromise (IOCs) such as IP addresses, domains, and email addresses. The analysi…