meduza | 05a0fb3e46f20ae833fc9d85e4a9f529095eb509e8204eeea7b55ff4621ae8e7

General

Target

2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
Size

3.6MB
MD5

a259fc34b22d352805b9f4d635b85fb6
SHA1

6fe1befb5519afc4bdc4298cfaa5b0ffb6ab7c2c
SHA256

05a0fb3e46f20ae833fc9d85e4a9f529095eb509e8204eeea7b55ff4621ae8e7
SHA512

8617dfca092438734099d6f09ba31cc2c0305358f725b346873992db9ad196de73da313cb0e441b73d4920001aabcddbeb659d9043a19c7888d241e4fc36f640
SSDEEP

24576:bw317sPycp8nCB3C+u7u/Q4uqiM4wDeEJlUcwmf2Z7agXWn2NXdndBhTC3bc22rr:bByPnI+rvmfKuYndbTQi6r

Score

10^/10

meduza collection discovery spyware stealer

Malware Config

Extracted

Family

meduza

C2

109.107.181.162

Attributes

anti_dbg
true
anti_vm
true
build_name
592
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 9 IoCs

resource	yara_rule
behavioral1/memory/2328-5-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral1/memory/2328-8-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral1/memory/2328-10-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral1/memory/2328-11-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral1/memory/2328-6-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral1/memory/2328-3-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral1/memory/2328-4-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral1/memory/2328-25-0x0000000140000000-0x000000014013E000-memory.dmp	family_meduza
behavioral1/memory/2328-26-0x0000000140000000-0x000000014013E000-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-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\International\Geo\Nation	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe

Deletes itself 1 IoCs

pid	Process
2648	cmd.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-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_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
5	api.ipify.org
6	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2500 set thread context of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2648	cmd.exe
2828	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2828	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2328	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
Token: SeImpersonatePrivilege	2328	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2500 wrote to memory of 2328	2500	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	31
PID 2328 wrote to memory of 2648	2328	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	33
PID 2328 wrote to memory of 2648	2328	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	33
PID 2328 wrote to memory of 2648	2328	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe	33
PID 2648 wrote to memory of 2828	2648	cmd.exe	35
PID 2648 wrote to memory of 2828	2648	cmd.exe	35
PID 2648 wrote to memory of 2828	2648	cmd.exe	35

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Users\Admin\AppData\Local\Temp\2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
  C:\Users\Admin\AppData\Local\Temp\2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:2328
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\2024-11-07_a259fc34b22d352805b9f4d635b85fb6_ryuk.exe"
    3⤵
    - Deletes itself
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2648
  - - C:\Windows\system32\PING.EXE
      ping 1.1.1.1 -n 1 -w 3000
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2828

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

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2328-0-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-2-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-5-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-8-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-10-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-11-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-7-0x000007FFFFFD6000-0x000007FFFFFD7000-memory.dmp

Filesize
4KB

Download
memory/2328-6-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-3-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-4-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-1-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-25-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download
memory/2328-26-0x0000000140000000-0x000000014013E000-memory.dmp

Filesize
1.2MB

Download

Analysis

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