meduza | b4de7f656a143cb9a5a1836836f0e90d1707a92e66685d15d54e3eb203fa9476

General

Target

2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe
Size

3.1MB
MD5

36b15b22ccf73ecfec445f9bd7dc59ff
SHA1

4736a7feb57398e3efde894647b038014ced93dc
SHA256

b4de7f656a143cb9a5a1836836f0e90d1707a92e66685d15d54e3eb203fa9476
SHA512

fd36ea7181b4c3466cc9401bd10e67a138935f0098480629b51d88cd498ae346f910e4fbd138c7b59d2dd56f6ad59de05e1dddeec5be724cb7cc812060f23be5
SSDEEP

24576:SBvVKjsyoZlCOjSXM8ZiPC9RSjFqfH48RdFNE2YRM+MBgOoJ14/fe7P/e:uJXjoM80dX87FNE7ME7P

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
SEO2.0
extensions
.txt; .doc; .xlsx
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 9 IoCs

resource	yara_rule
behavioral1/memory/2908-8-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral1/memory/2908-6-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral1/memory/2908-10-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral1/memory/2908-11-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral1/memory/2908-5-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral1/memory/2908-4-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral1/memory/2908-3-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral1/memory/2908-27-0x0000000140000000-0x0000000140141000-memory.dmp	family_meduza
behavioral1/memory/2908-28-0x0000000140000000-0x0000000140141000-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-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\International\Geo\Nation	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_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-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_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
3	api.ipify.org
5	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2888 set thread context of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2908	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2908	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe
Token: SeImpersonatePrivilege	2908	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30
PID 2888 wrote to memory of 2908	2888	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_ryuk.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-12-14_36b15b22ccf73ecfec445f9bd7dc59ff_cobalt-strike_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:2908

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/2908-8-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-6-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-10-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-11-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-5-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-4-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-3-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-1-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-0-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-7-0x000007FFFFFD3000-0x000007FFFFFD4000-memory.dmp

Filesize
4KB

Download
memory/2908-2-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-27-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download
memory/2908-28-0x0000000140000000-0x0000000140141000-memory.dmp

Filesize
1.3MB

Download

Analysis

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