Malware Analysis Report

2025-08-10 21:40

Sample ID 240602-25p3rsbf55
Target 2024-06-02_558f8b263d4ee865ee5a160b71048b17_ryuk
SHA256 086e92e7ec47c5155578fc42fffe5ae5021e3444069b4bc05cae1119c10f1ba1
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

086e92e7ec47c5155578fc42fffe5ae5021e3444069b4bc05cae1119c10f1ba1

Threat Level: Likely benign

The file 2024-06-02_558f8b263d4ee865ee5a160b71048b17_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

2024-06-02 23:10

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-02 23:10

Reported

2024-06-02 23:12

Platform

win7-20240419-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_558f8b263d4ee865ee5a160b71048b17_ryuk.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-02_558f8b263d4ee865ee5a160b71048b17_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_558f8b263d4ee865ee5a160b71048b17_ryuk.exe"

Network

N/A

Files

memory/2424-0-0x0000000140000000-0x000000014010E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 23:10

Reported

2024-06-02 23:12

Platform

win10v2004-20240508-en

Max time kernel

132s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_558f8b263d4ee865ee5a160b71048b17_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\2024-06-02_558f8b263d4ee865ee5a160b71048b17_ryuk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-06-02_558f8b263d4ee865ee5a160b71048b17_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-02_558f8b263d4ee865ee5a160b71048b17_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-02_558f8b263d4ee865ee5a160b71048b17_ryuk.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/2792-0-0x0000000140000000-0x000000014010E000-memory.dmp

memory/2792-1-0x0000000000830000-0x0000000000890000-memory.dmp

memory/2792-9-0x0000000000830000-0x0000000000890000-memory.dmp

memory/2792-11-0x0000000000830000-0x0000000000890000-memory.dmp

memory/2792-13-0x0000000140000000-0x000000014010E000-memory.dmp