Malware Analysis Report

2024-11-30 20:51

Sample ID 241116-ty8brstlgp
Target 2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk
SHA256 122fc376c799e673542d418dc29d0fec04e8e4762f71a65f69338cbf5afb01d4
Tags
meduza collection discovery spyware 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

122fc376c799e673542d418dc29d0fec04e8e4762f71a65f69338cbf5afb01d4

Threat Level: Known bad

The file 2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk was found to be: Known bad.

Malicious Activity Summary

meduza collection discovery spyware stealer

Meduza family

Meduza Stealer payload

Meduza

Checks computer location settings

Reads user/profile data of web browsers

Accesses Microsoft Outlook profiles

Checks installed software on the system

Looks up external IP address via web service

Suspicious use of SetThreadContext

Browser Information Discovery

Unsigned PE

outlook_win_path

Suspicious use of WriteProcessMemory

outlook_office_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-16 16:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-16 16:29

Reported

2024-11-16 16:31

Platform

win7-20240903-en

Max time kernel

121s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe"

C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-16 16:29

Reported

2024-11-16 16:31

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_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

Meduza family

meduza

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A

Checks installed software on the system

discovery

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Browser Information Discovery

discovery

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe
PID 3940 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe"

C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-16_23c48ef9af21ef0c23b973d91cc6a74c_ryuk.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
BE 45.130.145.152:15666 tcp
US 8.8.8.8:53 api.ipify.org udp
US 104.26.13.205:443 api.ipify.org tcp
US 8.8.8.8:53 c.pki.goog udp
GB 216.58.201.99:80 c.pki.goog tcp
US 8.8.8.8:53 133.130.81.91.in-addr.arpa udp
US 8.8.8.8:53 152.145.130.45.in-addr.arpa udp
US 8.8.8.8:53 205.13.26.104.in-addr.arpa udp
US 8.8.8.8:53 99.201.58.216.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 22.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/3940-0-0x00007FF66A700000-0x00007FF66A701000-memory.dmp

memory/4408-5-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4408-4-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4408-6-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4408-7-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4408-14-0x0000000140000000-0x000000014013E000-memory.dmp

memory/4408-15-0x0000000140000000-0x000000014013E000-memory.dmp