Malware Analysis Report

2024-11-13 16:32

Sample ID 241106-r3f2zasbla
Target 2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk
SHA256 c34ec4d2e496f8e6e77b3b99cf3302756d447966f1d0d1795fac13f7d352e2eb
Tags
meduza stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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
10/10

SHA256

c34ec4d2e496f8e6e77b3b99cf3302756d447966f1d0d1795fac13f7d352e2eb

Threat Level: Known bad

The file 2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk was found to be: Known bad.

Malicious Activity Summary

meduza stealer

Meduza

Meduza Stealer payload

Meduza family

Checks computer location settings

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-06 14:42

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-06 14:42

Reported

2024-11-06 14:45

Platform

win7-20240903-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe"

Signatures

Meduza

stealer meduza

Meduza Stealer payload

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

Meduza family

meduza

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 2140 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe"

C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe

Network

Country Destination Domain Proto
NL 89.22.239.174:15666 tcp

Files

memory/2644-1-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-3-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-8-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-10-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-11-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-7-0x000007FFFFFDB000-0x000007FFFFFDC000-memory.dmp

memory/2644-6-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-5-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-4-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-2-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2644-0-0x0000000140000000-0x000000014013E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-06 14:42

Reported

2024-11-06 14:45

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe"

Signatures

Meduza

stealer meduza

Meduza Stealer payload

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

Meduza family

meduza

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe
PID 4288 wrote to memory of 4468 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe"

C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-06_a99d506cddadbf72ddd915a667760a72_ryuk.exe

Network

Country Destination Domain Proto
NL 89.22.239.174:15666 tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/4468-0-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4468-1-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4468-2-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4468-3-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4468-4-0x0000000140000000-0x000000014013E000-memory.dmp