Analysis
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max time kernel
91s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
09-12-2024 01:53
Static task
static1
Behavioral task
behavioral1
Sample
2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe
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Size
4.1MB
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MD5
c55ce8a5016e1628887b48bbd1beb923
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SHA1
60ad46da825e8a59f5b1c5b59795c8f0273c8d06
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SHA256
34bf15220b0259eb2ed1d024f6e5e2ada2bd0a0501d0c1931e4097a787bb634b
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SHA512
4388dcbb5be669b8dab78ffa59a184d5a508455ac932b7d992a38014dc89cdee09f8f94720d0284f6033bf1dccf113b5a557c1da2a4917cc42c964cddeb2de79
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SSDEEP
49152:Xl4UjB0jUuoO+BxK2/VJTe1LK+vBmGKOWB11MaXEcA:14UjKguGA
Malware Config
Extracted
meduza
5.252.155.28
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anti_dbg
true
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anti_vm
true
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build_name
782
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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 46 IoCs
resource yara_rule behavioral2/memory/4700-5-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-6-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-12-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-11-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-10-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-9-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-4-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-17-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-18-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-23-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-25-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-20-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-19-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-15-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-33-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-32-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-36-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-37-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-38-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-44-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-45-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-68-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-81-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-87-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-89-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-96-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-82-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-78-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-76-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-75-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-69-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-63-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-59-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-57-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-56-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-53-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-51-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-50-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-47-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-46-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-62-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-39-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-43-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-40-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-99-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4700-100-0x0000000140000000-0x00000001401FA000-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 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_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\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_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 6 api.ipify.org 8 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3116 set thread context of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_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 440 cmd.exe 2972 PING.EXE -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2972 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4700 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 4700 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4700 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe Token: SeImpersonatePrivilege 4700 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 3116 wrote to memory of 4700 3116 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 83 PID 4700 wrote to memory of 440 4700 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 91 PID 4700 wrote to memory of 440 4700 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe 91 PID 440 wrote to memory of 2972 440 cmd.exe 93 PID 440 wrote to memory of 2972 440 cmd.exe 93 -
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 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_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 2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3116 -
C:\Users\Admin\AppData\Local\Temp\2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-09_c55ce8a5016e1628887b48bbd1beb923_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:4700 -
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\2024-12-09_c55ce8a5016e1628887b48bbd1beb923_ryuk.exe"3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:440 -
C:\Windows\system32\PING.EXEping 1.1.1.1 -n 1 -w 30004⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:2972
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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