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Trojan-Ransom.Win32.Cryrar.hev

Class Trojan-Ransom
Platform Win32
Family Cryrar
Full name Trojan-Ransom.Win32.Cryrar.hev
Examples 75915989D92A3E791D932317121902A3
2B2532B0F575F6ECAFAB9518D4622569
36717F8756E69506672BF0729850D775
8D81155AB4D58A05514D7B7EFA93394C
7BACDFA0AFBE8C69D1DD7696838F9126
Updated at 2024-01-17 17:28:48
Tactics &
techniques MITRE*

TA0002 Execution

The adversary is trying to run malicious code.


Execution consists of techniques that result in adversary-controlled code running on a local or remote system. Techniques that run malicious code are often paired with techniques from all other tactics to achieve broader goals, like exploring a network or stealing data. For example, an adversary might use a remote access tool to run a PowerShell script that does Remote System Discovery.


T1204.002 User Execution: Malicious File

An adversary may rely upon a user opening a malicious file in order to gain execution. Users may be subjected to social engineering to get them to open a file that will lead to code execution. This user action will typically be observed as follow-on behavior from Spearphishing Attachment. Adversaries may use several types of files that require a user to execute them, including .doc, .pdf, .xls, .rtf, .scr, .exe, .lnk, .pif, and .cpl.

Adversaries may employ various forms of Masquerading and Obfuscated Files or Information to increase the likelihood that a user will open and successfully execute a malicious file. These methods may include using a familiar naming convention and/or password protecting the file and supplying instructions to a user on how to open it.(Citation: Password Protected Word Docs)

While Malicious File frequently occurs shortly after Initial Access it may occur at other phases of an intrusion, such as when an adversary places a file in a shared directory or on a user's desktop hoping that a user will click on it. This activity may also be seen shortly after Internal Spearphishing.
* © 2024 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.
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