Malware Analysis Report

2025-08-10 19:49

Sample ID 250702-xjj76shr9v
Target 2025-07-02_d2d8794d8a26776b66edcc6905c6a64d_black-basta_ryuk
SHA256 a998cec77e7b7533e80bf428db5c11f8fece22be5d6b9f767e95b41f4f2ae263
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 Overview

score
5/10

SHA256

a998cec77e7b7533e80bf428db5c11f8fece22be5d6b9f767e95b41f4f2ae263

Threat Level: Likely benign

The file 2025-07-02_d2d8794d8a26776b66edcc6905c6a64d_black-basta_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

2025-07-02 18:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-07-02 18:52

Reported

2025-07-02 18:55

Platform

win10v2004-20250619-en

Max time kernel

105s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_d2d8794d8a26776b66edcc6905c6a64d_black-basta_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\2025-07-02_d2d8794d8a26776b66edcc6905c6a64d_black-basta_ryuk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2025-07-02_d2d8794d8a26776b66edcc6905c6a64d_black-basta_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2025-07-02_d2d8794d8a26776b66edcc6905c6a64d_black-basta_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_d2d8794d8a26776b66edcc6905c6a64d_black-basta_ryuk.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.179.227:80 c.pki.goog tcp

Files

memory/1548-0-0x0000000140000000-0x0000000140186000-memory.dmp

memory/1548-1-0x0000000000900000-0x0000000000960000-memory.dmp

memory/1548-9-0x0000000000900000-0x0000000000960000-memory.dmp

memory/1548-12-0x0000000000900000-0x0000000000960000-memory.dmp

memory/1548-13-0x0000000140000000-0x0000000140186000-memory.dmp