meduza | e5d7e8537578b6c2f2ad9d842c51fcda0535c82b4e84c52537afe852687aa5f2

General

Target

2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
Size

4.1MB
MD5

36517f5bfae396a1d223e7491a3044cc
SHA1

591a20349741340b21e0d3ea7d70a7df4043e925
SHA256

e5d7e8537578b6c2f2ad9d842c51fcda0535c82b4e84c52537afe852687aa5f2
SHA512

23dac5a4cca030209d9e35ba04bf0388aa0088d5e7ba4020978e77e1eeefe7f70be60bd8ccdfb81732523b726b225c6df48d005857f5b4424ec3df52f13b6394
SSDEEP

49152:Xl4UjB0jUuB5ykrT/v+Qcr9tF3Vm2Jzd8SgN1IRA:14UjKguKA

Score

10^/10

meduza collection discovery spyware stealer

Malware Config

Extracted

Family

meduza

C2

5.252.155.28

Attributes

anti_dbg
true
anti_vm
true
build_name
703
extensions
none
grabber_max_size
1.048576e+06
links
none
port
15666
self_destruct
true

Signatures

Meduza
Meduza is a crypto wallet and info stealer written in C++.
stealer meduza

Meduza Stealer payload 5 IoCs

resource	yara_rule
behavioral2/memory/3704-4-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral2/memory/3704-6-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral2/memory/3704-7-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral2/memory/3704-5-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral2/memory/3704-16-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza

Meduza family
meduza

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	api.ipify.org
5	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1240 set thread context of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3704	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
3704	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3704	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
Token: SeImpersonatePrivilege	3704	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82
PID 1240 wrote to memory of 3704	1240	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Users\Admin\AppData\Local\Temp\2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-12-08_36517f5bfae396a1d223e7491a3044cc_ryuk.exe"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1240-0-0x00007FF586A60000-0x00007FF586A61000-memory.dmp

Filesize
4KB

Download
memory/3704-4-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/3704-6-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/3704-7-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/3704-5-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/3704-16-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download

Analysis

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