Coauthored by Karthickkumar Kathiresan of Uptycs Threat Research Team…
Tag: PROXY
Since early October 2023, Microsoft has observed two North Korean nation-state threat actors – Diamond Sleet and Onyx Sleet – exploiting CVE-2023-42793, a remote-code execution vulnerability affecting multiple versions of JetBrains TeamCity server. TeamCity is a continuous integration/continuous deployment (CI/CD) application used by organizations for DevOps and other software development activities.…
Preamble
Read More BLOODALCHEMY is an x86 backdoor written in C and found as shellcode injected into a signed benign process. It was discovered in our analysis and is part of the REF5961 intrusion set, which you can read about here.
BLOODALCHEMY requires a specific loader to be run because it isn’t reflexive (it doesn’t have the capability to load and execute by itself).…
On Oct. 11, a new version of curl (8.4.0) was released where a couple of new vulnerabilities were fixed (CVE-2023-38545 with severity HIGH and CVE-2023-38546 with severity LOW). These issues were previously announced in the project’s discussion. At the time of this blog, there have been several proof of concepts released for CVE-2023-38545 which result in crashes, but not exploitation.…
ToddyCat is an advanced APT actor that we described in a previous publication last year. The group started its activities in December 2020 and has been responsible for multiple sets of attacks against high-profile entities in Europe and Asia.
Our first publication was focused on their main tools, Ninja Trojan and Samurai Backdoor, and we also described the set of loaders used to launch them.…
The realm of cybersecurity is becoming more and more chaotic with each passing day, and there will always be a new actor entering the world of cybersecurity. The Dark Pink APT Group is one such entity that has recently caught the attention of security researchers and organizations worldwide.…
Introduction
Read More In October 2022, during an investigation into an incident at a Russian industrial enterprise, samples of previously unseen malware were discovered running on compromised computers of this organization. The names of this malware’s executable files were similar to the names of legitimate software installed on the infected machines, and a number of samples had valid digital signatures. Also, the identified executable files and libraries were processed by the Themida protector to make them more difficult to detect and analyze.…
A Short History Lesson
Read More In 1923, the Soviet Union created the Nagorno-Karabakh Autonomous Oblast (an oblast is an administrative region or province) within the Azerbaijan Soviet Socialist Republic. This oblast has a 95% ethnically Armenian population. In 1988, Nagorno-Karabakh declared its intention to leave Azerbaijan and join the neighboring Republic of Armenia.…
More than a week after it suffered a crippling ransomware attack, the hotel giant MGM is struggling to recover. The attack, linked to the ransomware-as-a-service (RaaS) group known as ALPHV, or BlackCat, caused slot machines and ATMs in MGM’s Las Vegas hotels to go dark and forced hotel staff to revert to pencil and paper while guests queued for hours in lines to check in and out of their rooms. …
Executive Summary
Read More Menlo Labs recently identified a phishing campaign targeting executives in senior level roles across various industries, but primarily Banking and Financial services, Insurance providers, Property Management and Real Estate, and Manufacturing.
The key findings based on our research of the phishing campaign are as follows:
The campaign started in July and has continued into the month of August.…Volexity has identified several long-running and currently active campaigns undertaken by the threat actor Volexity tracks as EvilBamboo (formerly named Evil Eye) targeting Tibetan, Uyghur, and Taiwanese individuals and organizations. These targets represent three of the Five Poisonous Groups of Chinese Communist Party (CCP).
Volexity has tracked the activities of EvilBamboo for more than five years and continues to observe new campaigns from this threat actor.…
SUMMARY
Read More Secureworks® Counter Threat Unit™ (CTU) analysis indicates that the GOLD MELODY threat group acts as an initial access broker (IAB) that sells access to compromised organizations for other cybercriminals to exploit. This financially motivated group has been active since at least 2017, compromising organizations by exploiting vulnerabilities in unpatched internet-facing servers.…
While monitoring Earth Lusca, we discovered an intriguing, encrypted file on the threat actor’s server — a Linux-based malware, which appears to originate from the open-source Windows backdoor Trochilus, which we’ve dubbed SprySOCKS due to its swift behavior and SOCKS implementation.
In early 2021, we published a research paper discussing the operation of a China-linked threat actor we tracked as Earth Lusca.…
This post is also available in: 日本語 (Japanese)
Executive SummaryWe observed a series of intrusions directed at a Southeast Asian government target, a cluster of activity that we attribute with a moderate level of confidence to Alloy Taurus, a group believed to be operating on behalf of Chinese state interests.…
This post is also available in: 日本語 (Japanese)
Executive SummaryA cluster of threat actor activity that Unit 42 observed attacking a Southeast Asian government target could provide insight into a rarely seen, stealthy APT group known as Gelsemium.
We found this activity as part of an investigation into compromised environments within a Southeast Asian government.…
In 2022, The DFIR Report observed an increase in the adversarial usage of Remote Management and Monitoring (RMM) tools. When compared to post-exploitation channels that heavily rely on terminals, such as Cobalt Strike or Metasploit, the graphical user interface provided by RMMs are more user friendly.…
Recorded Future’s Insikt Group has conducted an analysis of a prolonged cyber-espionage campaign known as TAG-74, which is attributed to Chinese state-sponsored actors. TAG-74 primarily focuses on infiltrating South Korean academic, political, and government organizations. This group has been linked to Chinese military intelligence and poses a significant threat to academic, aerospace and defense, government, military, and political entities in South Korea, Japan, and Russia.…
This post is also available in: 日本語 (Japanese)
Researchers should be aware of threat actors repurposing older proof of concept (PoC) code to quickly craft a fake PoC for a newly released vulnerability. On Aug. 17, 2023, the Zero Day Initiative publicly reported a remote code execution (RCE) vulnerability in WinRAR tracked as CVE-2023-40477.…
Gh0st RAT is a remote control malware developed by the C. Rufus Security Team from China. Due to its source code being publicly available, malware developers use it as a reference as they continue developing numerous variants that are still actively used in attacks. Although the source code is public, Gh0st RAT is mainly used by threat actors based in China.…