Malware Analysis Report

2025-04-14 03:48

Sample ID 240612-syb3wstfmm
Target 2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk
SHA256 27ede957e2a23d1b959c371785f3ce79b463c9261c2d75f0b29d3cf00d9ec063
Tags
score
5/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
5/10

SHA256

27ede957e2a23d1b959c371785f3ce79b463c9261c2d75f0b29d3cf00d9ec063

Threat Level: Likely benign

The file 2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk was found to be: Likely benign.

Malicious Activity Summary


Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-12 15:31

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-12 15:31

Reported

2024-06-12 15:34

Platform

win7-20240611-en

Max time kernel

119s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk.exe"

Signatures

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\alg.exe C:\Users\Admin\AppData\Local\Temp\2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk.exe"

Network

N/A

Files

memory/1704-1-0x00000000001E0000-0x0000000000240000-memory.dmp

memory/1704-6-0x0000000140000000-0x0000000140237000-memory.dmp

memory/1704-7-0x00000000001E0000-0x0000000000240000-memory.dmp

memory/1704-8-0x00000000001E0000-0x0000000000240000-memory.dmp

memory/1704-15-0x0000000140000000-0x0000000140237000-memory.dmp

memory/1704-14-0x00000000001E0000-0x0000000000240000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 15:31

Reported

2024-06-12 15:34

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_de39304e4665ec97990a0425dcf2be7f_ryuk.exe"

Network

Files

memory/4820-9-0x0000000000440000-0x00000000004A0000-memory.dmp

memory/4820-8-0x0000000140000000-0x0000000140237000-memory.dmp

memory/4820-12-0x0000000140000000-0x0000000140237000-memory.dmp

memory/4820-6-0x0000000000440000-0x00000000004A0000-memory.dmp

memory/4820-1-0x0000000000440000-0x00000000004A0000-memory.dmp