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Класс: Trojan-PSW

Предназначены для кражи пользовательских аккаунтов (логин и пароль) с пораженных компьютеров. PSW – аббревиатура от Password Stealing Ware («ПО для кражи паролей»). При запуске PSW-троянцы ищут необходимую информацию в системных файлах, хранящих различную конфиденциальную информацию, или реестре. В случае успешного поиска программа отсылает найденные данные «хозяину». Для передачи данных могут быть использованы электронная почта, ftp, web (посредством указания данных в запросе) и другие способы. Некоторые троянцы данного типа воруют регистрационную информацию к различному программному обеспечению. Программы, занимающиеся кражей учетных записей пользователей систем интернет-банкинга, интернет-пейджинга и онлайн-игр, в силу их многочисленности, выделены в отдельные классы: Trojan Banker, Trojan IM и Trojan GameThief соответственно.

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Платформа: MSIL

MSIL (Microsoft Intermediate Language; новое название – CIL, Common Intermediate Language) – промежуточный язык, разработанный компанией Microsoft для платформы .NET Framework. Код на языке CIL генерируют все компиляторы .NET компании Microsoft, входящие в среду разработки Microsoft Visual Studio (Visual Basic .NET, Visual C++, Visual C# и другие).

Семейство: Trojan-PSW.MSIL.Lumma

Нет описания семейства

Примеры

3B7CD11803B6CDCE52052B00B49DE500

Тактики и Техники: Mitre*

TA0005
Defense Evasion
The adversary is trying to avoid being detected.

Defense Evasion consists of techniques that adversaries use to avoid detection throughout their compromise. Techniques used for defense evasion include uninstalling/disabling security software or obfuscating/encrypting data and scripts. Adversaries also leverage and abuse trusted processes to hide and masquerade their malware. Other tactics’ techniques are cross-listed here when those techniques include the added benefit of subverting defenses.
T1055.012
Process Injection: Process Hollowing
Adversaries may inject malicious code into suspended and hollowed processes in order to evade process-based defenses. Process hollowing is a method of executing arbitrary code in the address space of a separate live process.

Process hollowing is commonly performed by creating a process in a suspended state then unmapping/hollowing its memory, which can then be replaced with malicious code. A victim process can be created with native Windows API calls such as CreateProcess, which includes a flag to suspend the processes primary thread. At this point the process can be unmapped using APIs calls such as ZwUnmapViewOfSection or NtUnmapViewOfSection before being written to, realigned to the injected code, and resumed via VirtualAllocEx, WriteProcessMemory, SetThreadContext, then ResumeThread respectively.(Citation: Leitch Hollowing)(Citation: Elastic Process Injection July 2017)

This is very similar to Thread Local Storage but creates a new process rather than targeting an existing process. This behavior will likely not result in elevated privileges since the injected process was spawned from (and thus inherits the security context) of the injecting process. However, execution via process hollowing may also evade detection from security products since the execution is masked under a legitimate process.
TA0011
Command and Control
The adversary is trying to communicate with compromised systems to control them.

Command and Control consists of techniques that adversaries may use to communicate with systems under their control within a victim network. Adversaries commonly attempt to mimic normal, expected traffic to avoid detection. There are many ways an adversary can establish command and control with various levels of stealth depending on the victim’s network structure and defenses.
T1071.001
Application Layer Protocol: Web Protocols
Adversaries may communicate using application layer protocols associated with web traffic to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.

Protocols such as HTTP/S(Citation: CrowdStrike Putter Panda) and WebSocket(Citation: Brazking-Websockets) that carry web traffic may be very common in environments. HTTP/S packets have many fields and headers in which data can be concealed. An adversary may abuse these protocols to communicate with systems under their control within a victim network while also mimicking normal, expected traffic.

* © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.

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