Malware Analysis Report

2025-08-10 21:31

Sample ID 240528-y6qh5sca79
Target 2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_ryuk
SHA256 a78573e0a9d789fe1968ef0fa5aa06cf2cb65fcb5a5307fa47a7b6f7fff06fcc
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

a78573e0a9d789fe1968ef0fa5aa06cf2cb65fcb5a5307fa47a7b6f7fff06fcc

Threat Level: Likely benign

The file 2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_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

2024-05-28 20:24

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-28 20:24

Reported

2024-05-28 20:26

Platform

win7-20240221-en

Max time kernel

121s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_ryuk.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_ryuk.exe"

Network

N/A

Files

memory/2420-0-0x0000000140000000-0x00000001401EE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-28 20:24

Reported

2024-05-28 20:26

Platform

win10v2004-20240508-en

Max time kernel

133s

Max time network

103s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_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\2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_ryuk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-28_ccd9ff329f36af5e6a235adefecf2f24_ryuk.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
NL 23.62.61.178:443 www.bing.com tcp
US 8.8.8.8:53 178.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/224-0-0x0000000140000000-0x00000001401EE000-memory.dmp

memory/224-1-0x00000000021F0000-0x0000000002250000-memory.dmp

memory/224-9-0x00000000021F0000-0x0000000002250000-memory.dmp

memory/224-7-0x00000000021F0000-0x0000000002250000-memory.dmp

memory/224-12-0x00000000021F0000-0x0000000002250000-memory.dmp

memory/224-13-0x0000000140000000-0x00000001401EE000-memory.dmp