meduza | 2377e854aa3db9f95def39ab2f2b9ec78f6103517b7c7208c2efe91c86111876

General

Target

2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
Size

4.1MB
MD5

f89ecba8fd71361c58b70ecd585c53e2
SHA1

9d7846d9cec23ef4028f6eb26bbcdeba486ad190
SHA256

2377e854aa3db9f95def39ab2f2b9ec78f6103517b7c7208c2efe91c86111876
SHA512

05692f0db68f7a922c92a3ab8f22f69af5265b3671518807ea9c2fc4ce41ff343748ca1ebe036124ef13e079083bbd7e58b82a1449391809866106e82e3608d8
SSDEEP

49152:Xl4UjB0jUulkpLMLcYKczIJSH0jO1uR51Ca0b48PNpdPA:14UjKguFA

Score

10^/10

meduza collection discovery spyware stealer

Malware Config

Extracted

Family

meduza

C2

45.130.145.152

Attributes

anti_dbg
true
anti_vm
true
build_name
Seo
extensions
.txt;.doc;.docx;.pdf;.xls;.xlsx;.log;.db;.sqlite
grabber_max_size
4.194304e+06
port
15666
self_destruct
false

Signatures

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

Meduza Stealer payload 6 IoCs

resource	yara_rule
behavioral2/memory/4408-4-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral2/memory/4408-5-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral2/memory/4408-6-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral2/memory/4408-7-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral2/memory/4408-14-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral2/memory/4408-15-0x0000000140000000-0x000000014013E000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_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
6	api.ipify.org
7	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4884 set thread context of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4408	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
4408	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4408	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
Token: SeImpersonatePrivilege	4408	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82
PID 4884 wrote to memory of 4408	4884	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Users\Admin\AppData\Local\Temp\2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_ryuk.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-11-27_f89ecba8fd71361c58b70ecd585c53e2_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:4408

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

Filesize
1.2MB

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

Filesize
1.2MB

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

Filesize
1.2MB

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

Filesize
1.2MB

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

Filesize
1.2MB

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

Filesize
1.2MB

Download
memory/4884-0-0x00007FF772200000-0x00007FF772201000-memory.dmp

Filesize
4KB

Download

Analysis

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