Analysis
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max time kernel
94s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
21-11-2024 12:41
Static task
static1
Behavioral task
behavioral1
Sample
2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe
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Size
4.1MB
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MD5
a88a7848a66a3ab2018b141b43f7d22d
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SHA1
d6c8775d28f6e2428a5ddc75276cf8f7a3358ca4
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SHA256
f58f565ea57ad0e9790bc776ec1b2a8d891065a237b55205c3e94c64ce8868fa
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SHA512
fcc6df54d9d314cd8486c5b72d1e0246822b3637fdb50dfcdab8b65ee78d532deffa19eba26c1051ab825441a3debc0a590532924384e848699d9e54649c734b
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SSDEEP
49152:/xGK0l3e3u5dhCjuv3nZpWY6eKsHolcvyNCkgk0Z:/xGK09yu9Z
Malware Config
Extracted
meduza
109.107.181.162
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anti_dbg
true
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anti_vm
true
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build_name
750
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extensions
none
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grabber_max_size
1.048576e+06
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links
none
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port
15666
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self_destruct
true
Signatures
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Meduza Stealer payload 47 IoCs
resource yara_rule behavioral2/memory/2392-4-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-9-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-12-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-16-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-17-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-11-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-10-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-6-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-5-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-20-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-26-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-25-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-23-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-19-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-18-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-33-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-34-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-38-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-37-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-45-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-46-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-43-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-44-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-40-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-39-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-82-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-78-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-88-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-90-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-96-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-85-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-76-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-75-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-69-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-64-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-63-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-60-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-58-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-54-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-52-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-48-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-70-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-57-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-51-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-47-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-99-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/2392-100-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza -
Meduza family
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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 10 api.ipify.org 11 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4692 set thread context of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 4148 cmd.exe 1784 PING.EXE -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 1784 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2392 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 2392 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2392 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe Token: SeImpersonatePrivilege 2392 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 4692 wrote to memory of 2392 4692 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 83 PID 2392 wrote to memory of 4148 2392 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 94 PID 2392 wrote to memory of 4148 2392 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe 94 PID 4148 wrote to memory of 1784 4148 cmd.exe 96 PID 4148 wrote to memory of 1784 4148 cmd.exe 96 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4692 -
C:\Users\Admin\AppData\Local\Temp\2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exeC:\Users\Admin\AppData\Local\Temp\2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe2⤵
- 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:2392 -
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\2024-11-21_a88a7848a66a3ab2018b141b43f7d22d_ryuk.exe"3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4148 -
C:\Windows\system32\PING.EXEping 1.1.1.1 -n 1 -w 30004⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:1784
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1