While responding to an incident at one of their clients, the PT ESC CSIRT team discovered a previously unknown backdoor written in Go, which they attributed to a cybercrime gang dubbed ExCobalt.
ExCobalt focuses on cyberespionage and includes several members active since at least 2016 and presumably once part of the notorious Cobalt gang. Cobalt attacked financial institutions to steal funds. One of Cobalt’s hallmarks was the use of the CobInt tool, something ExCobalt began to use in 2022. Over the past year, the PT ESC has recorded attacks linked to ExCobalt and investigated related incidents at Russian organizations in the following sectors: Metallurgy, Telecommunications, Mining, Information technology, Government, Software development
Read more…
Source: Positive Technologies
Related:
- Lucifer: New Cryptojacking and DDoS Hybrid Malware Exploiting High and Critical Vulnerabilities to Infect Windows Devices
June 24, 2020
On May 29, 2020, Unit 42 researchers discovered a new variant of a hybrid cryptojacking malware from numerous incidents of CVE-2019-9081 exploitation in the wild. A closer look revealed the malware, which we’ve dubbed “Lucifer”, is capable of conducting DDoS attacks and well-equipped with all kinds of exploits against vulnerable Windows hosts. The first wave of the ...
- Magnitude exploit kit – evolution
June 24, 2020
Exploit kits are not as widespread as they used to be. In the past, they relied on the use of already patched vulnerabilities. Newer and more secure web browsers with automatic updates simply do not allow known vulnerabilities to be exploited. It was very different back in the heyday of Adobe Flash because it’s just ...
- Oh, what a boot-iful mornin’
June 23, 2020
In mid-April, Kaspersky threat monitoring systems detected malicious files being distributed under the name “on the new initiative of the World Bank in connection with the coronavirus pandemic” (in Russian) with the extension EXE or RAR. Inside the files was the well-known Rovnix bootkit. There is nothing new about cybercriminals exploiting the coronavirus topic; the ...
- XORDDoS, Kaiji Botnet Malware Variants Target Exposed Docker Servers
June 22, 2020
Researchers at Trend Micro have recently detected variants of two existing Linux botnet malware types targeting exposed Docker servers; these are XORDDoS malware (detected by Trend Micro as Backdoor.Linux.XORDDOS.AE) and Kaiji DDoS malware (detected by Trend Micro as DDoS.Linux.KAIJI.A). Having Docker servers as their target is a new development for both XORDDoS and Kaiji; XORDDoS was known ...
- Microcin is here
June 19, 2020
In February 2020, we observed a Trojan injected into the system process memory on a particular host. The target turned out to be a diplomatic entity. What initially attracted our attention was the enterprise-grade API-like (application programming interface) programming style. Such an approach is not that common in the malware world and is mostly used ...
- Hackers use fake Windows error logs to hide malicious payload
June 19, 2020
Hackers have been using fake error logs to store ASCII characters disguised as hexadecimal values that decode to a malicious payload designed to prepare the ground for script-based attacks. The trick is part of a longer chain with intermediary PowerShell commands that ultimately delivers a script for reconnaissance purposes. MSP threat detection provider Huntress Labs discovered an attack scenario ...