Malware Analysis Report

2024-11-13 16:32

Sample ID 241106-rzw9sa1mdx
Target 2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk
SHA256 6fbf227c5d4c713d0621a8045ee4e232094e84354b0824ae2ef0e9694e09b3f1
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

6fbf227c5d4c713d0621a8045ee4e232094e84354b0824ae2ef0e9694e09b3f1

Threat Level: Known bad

The file 2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk was found to be: Known bad.

Malicious Activity Summary

meduza stealer

Meduza family

Meduza

Meduza Stealer payload

Checks computer location settings

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-06 14:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-06 14:38

Reported

2024-11-06 14:40

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_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-1-5-21-1846800975-3917212583-2893086201-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_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_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 2068 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe"

C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe

Network

Country Destination Domain Proto
NL 89.22.239.174:15666 tcp

Files

memory/1112-2-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-9-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-11-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-12-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-7-0x000007FFFFFDD000-0x000007FFFFFDE000-memory.dmp

memory/1112-6-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-5-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-4-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-3-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-1-0x0000000140000000-0x000000014013E000-memory.dmp

memory/1112-0-0x0000000140000000-0x000000014013E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-06 14:38

Reported

2024-11-06 14:40

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_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

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_97157c0cbe3762ec9b2515571f8c2265_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_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe
PID 372 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe"

C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-06_97157c0cbe3762ec9b2515571f8c2265_ryuk.exe

Network

Country Destination Domain Proto
NL 89.22.239.174:15666 tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 101.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/2148-0-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2148-1-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2148-2-0x0000000140000000-0x000000014013E000-memory.dmp

memory/2148-3-0x0000000140000000-0x000000014013E000-memory.dmp