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Net-Worm.Win32.Mytob.y

Class Net-Worm
Platform Win32
Family Mytob
Full name Net-Worm.Win32.Mytob.y
Examples 825CB08D2F1C78C26D99CF101E958689
B466D9B8D97A67B3A18D11DDD76E9E72
6C8EFA8B648BC2681DB949B88CCAE500
716FC2CD8A3ECAB3A5DE61E035F472A3
58F386BC01C00147083180264BB39E0B
Updated at 2023-11-25 03:54:24
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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