Analysis
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max time kernel
93s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
19-11-2024 01:52
Static task
static1
Behavioral task
behavioral1
Sample
2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe
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Size
4.1MB
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MD5
a3f61b9c0cc2262b3e74ae99f062b470
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SHA1
ccf6288dc160e175661fa64e0d435affe9203256
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SHA256
e201febc4a6eb94be9609439e293fd47c41bc17b05fc0bbc290319fb7510eb5b
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SHA512
b127cb872bd37d25726ab4f59a68bdbdddfe12ec1da00873cd73c7f2b34ab50d4030cc18aa5ed3bafab60737efb8016a670e7492a979f1de6cc0383d9208cb63
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SSDEEP
49152:qxGK0l3e3uOxpnwa/DI8AmYZLSX9Yg+zkVkF9qXhdW4DTAn5m5kBKQy3fyZlVuZZ:qxGK09yuYZ
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
592
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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/4792-4-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-6-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-5-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-15-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-18-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-25-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-23-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-20-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-19-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-17-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-12-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-11-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-10-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-9-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-34-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-35-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-41-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-40-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-44-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-48-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-49-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-72-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-83-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-93-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-91-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-100-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-77-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-71-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-66-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-65-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-59-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-56-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-54-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-88-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-85-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-80-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-62-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-60-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-53-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-50-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-47-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-45-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-46-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-39-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-38-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-103-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4792-104-0x0000000140000000-0x00000001401FA000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_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 3 api.ipify.org 5 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4496 set thread context of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 -
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 2824 cmd.exe 2264 PING.EXE -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2264 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4792 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 4792 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4792 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe Token: SeImpersonatePrivilege 4792 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4496 wrote to memory of 4792 4496 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 84 PID 4792 wrote to memory of 2824 4792 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 91 PID 4792 wrote to memory of 2824 4792 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe 91 PID 2824 wrote to memory of 2264 2824 cmd.exe 93 PID 2824 wrote to memory of 2264 2824 cmd.exe 93 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4496 -
C:\Users\Admin\AppData\Local\Temp\2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exeC:\Users\Admin\AppData\Local\Temp\2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_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:4792 -
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\2024-11-19_a3f61b9c0cc2262b3e74ae99f062b470_ryuk.exe"3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2824 -
C:\Windows\system32\PING.EXEping 1.1.1.1 -n 1 -w 30004⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:2264
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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