T1055.012: Process Hollowing

Gorgon Group is a threat group consisting of members who are suspected to be Pakistan-based or have other connections to Pakistan. The group has performed a mix of criminal and targeted attacks, including campaigns against government organizations in the United Kingdom, Spain, Russia, and the United States. [1]

Threat Group-3390 is a Chinese threat group that has extensively used strategic Web compromises to target victims.[1] The group has been active since at least 2010 and has targeted organizations in the aerospace, government, defense, technology, energy, manufacturing and gambling/betting sectors.[2][3][4]

Patchwork is a cyber espionage group that was first observed in December 2015. While the group has not been definitively attributed, circumstantial evidence suggests the group may be a pro-Indian or Indian entity. Patchwork has been seen targeting industries related to diplomatic and government agencies. Much of the code used by this group was copied and pasted from online forums. Patchwork was also seen operating spearphishing campaigns targeting U.S. think tank groups in March and April of 2018.[1] [2][3][4]

BlackByte is a ransomware threat actor operating since at least 2021. BlackByte is associated with several versions of ransomware also labeled BlackByte Ransomware. BlackByte ransomware operations initially used a common encryption key allowing for the development of a universal decryptor, but subsequent versions such as BlackByte 2.0 Ransomware use more robust encryption mechanisms. BlackByte is notable for operations targeting critical infrastructure entities among other targets across North America.[1][2][3][4][5]

TA2541 is a cybercriminal group that has been targeting the aviation, aerospace, transportation, manufacturing, and defense industries since at least 2017. TA2541 campaigns are typically high volume and involve the use of commodity remote access tools obfuscated by crypters and themes related to aviation, transportation, and travel.[1][2]

menuPass is a threat group that has been active since at least 2006. Individual members of menuPass are known to have acted in association with the Chinese Ministry of State Security's (MSS) Tianjin State Security Bureau and worked for the Huaying Haitai Science and Technology Development Company.[1][2]

menuPass has targeted healthcare, defense, aerospace, finance, maritime, biotechnology, energy, and government sectors globally, with an emphasis on Japanese organizations. In 2016 and 2017, the group is known to have targeted managed IT service providers (MSPs), manufacturing and mining companies, and a university.[3][4][5][6][7][1][2]

Kimsuky is a Democratic People's Republic of Korea (DPRK)-based cyber espionage group that has been active since at least 2012. The group initially targeted South Korean government agencies, think tanks, and subject-matter experts in various fields. Its operations expanded to include the United Nations and organizations in the government, education, business services, and manufacturing sectors across the United States, Japan, Russia, and Europe. Kimsuky has focused collection on foreign policy and national security issues tied to the Korean Peninsula, nuclear policy, and sanctions. Kimsuky operations have overlapped with those of other North Korean state-sponsored cyber espionage actors as a result of ad hoc collaborations or other limited resource sharing.[1][2][3][4][5][6]

Kimsuky was assessed to be responsible for the 2014 Korea Hydro & Nuclear Power Co. compromise; other notable campaigns include Operation STOLEN PENCIL (2018), Operation Kabar Cobra (2019), and Operation Smoke Screen (2019).[7][8][9] In 2023, Kimsuky was observed using commercial large language models (LLMs) to assist with vulnerability research, scripting, social engineering and reconnaissance.[10]

DPRK threat actor cluster boundaries overlap in open source reporting, with some security researchers consolidating all attributed North Korean state-sponsored cyber activity under Lazarus Group, rather than tracking operationally distinct subgroups.

APT-C-36 is a suspected South American threat group that has engaged in espionage and financially motivated operations since at least 2018. APT-C-36 has targeted government institutions and entities in the financial, energy, and professional manufacturing sectors across Colombia and other Latin American countries.[1][2][3][4]

Vidar is a Windows infostealer that was first advertised in November 2018. Written in C++, Vidar collects PII, cryptocurrency wallets, documents and other data within the compromised machine. Version 2 of Vidar was published in October 2025, and has been used in numerous operations since its release. Vidar has been observed alongside other malware strains, including STOP/Djvu ransomware, Mina.exe (an XMRIG miner), and Clip1.exe (a Laplas Clipper sample).[1][2][3][4][5][6][7][8]

IcedID is a modular banking malware designed to steal financial information that has been observed in the wild since at least 2017. IcedID has been downloaded by Emotet in multiple campaigns.[1][2]

XLoader is an infostealer malware in use since at least 2016. Previously known and sometimes still referred to as Formbook, XLoader is a Malware as a Service (MaaS) known for stealing data from web browsers, email clients and File Transfer Protocol (FTP) applications.[1][2][3][4][5]

RCSession is a backdoor written in C++ that has been in use since at least 2018 by Mustang Panda and by Threat Group-3390 (Type II Backdoor).[1][2][3]

Denis is a Windows backdoor and Trojan used by APT32. Denis shares several similarities to the SOUNDBITE backdoor and has been used in conjunction with the Goopy backdoor.[1]

Woody RAT is a remote access trojan (RAT) that has been used since at least August 2021 against Russian organizations.[1]

Azorult is a commercial Trojan that is used to steal information from compromised hosts. Azorult has been observed in the wild as early as 2016. In July 2018, Azorult was seen used in a spearphishing campaign against targets in North America. Azorult has been seen used for cryptocurrency theft. [1][2]

QakBot is a modular banking trojan that has been used primarily by financially-motivated actors since at least 2007. QakBot is continuously maintained and developed and has evolved from an information stealer into a delivery agent for ransomware, most notably ProLock and Egregor.[1][2][3][4]

Cobalt Strike is a commercial, full-featured, remote access tool that bills itself as “adversary simulation software designed to execute targeted attacks and emulate the post-exploitation actions of advanced threat actors”. Cobalt Strike’s interactive post-exploit capabilities cover the full range of ATT&CK tactics, all executed within a single, integrated system.[1]

In addition to its own capabilities, Cobalt Strike leverages the capabilities of other well-known tools such as Metasploit and Mimikatz.[1]

HeartCrypt is a packer-as-a-service (PaaS) used to protect malware that has been available since at least 2024. HeartCrypt has been used to pack a variety of malware including Lumma Stealer, Remcos, and Rhadamanthys. In the HeartCrypt PaaS model, customers submit malware via private messaging services and it is then packed and returned by the operator as a new binary.[1]

Lokibot is a widely distributed information stealer that was first reported in 2015. It is designed to steal sensitive information such as usernames, passwords, cryptocurrency wallets, and other credentials. Lokibot can also create a backdoor into infected systems to allow an attacker to install additional payloads.[1][2][3]

Snip3 is a sophisticated crypter-as-a-service that has been used since at least 2021 to obfuscate and load numerous strains of malware including AsyncRAT, Revenge RAT, Agent Tesla, and NETWIRE.[1][2]