Analysis
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max time kernel
95s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
23-11-2024 12:36
Static task
static1
Behavioral task
behavioral1
Sample
2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe
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Size
4.1MB
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MD5
3f6b461548bdf92e28da68177b1c6e5c
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SHA1
6f8d46823ac5710ba74f5e9f90429dd64ae792f3
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SHA256
cc332b2b190d6bed3bfccf6f7b878a2065cf70babd1cc79a65b7adeadf130323
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SHA512
2a8c3421b7c5f718077efe03970de7e716eceffeea39df6b5e4cdf6d8468b896a60b6842d8d174cdc96e58a372b3cbfd07fedcb308f9348a6860e441c72bb88f
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SSDEEP
49152:Xl4UjB0jUuCPKPjJKq5q4ifpH2dqbIKL0fvDF+dTUKPLHA:14UjKgusA
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
439
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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 45 IoCs
resource yara_rule behavioral2/memory/1268-4-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-5-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-17-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-15-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-11-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-18-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-23-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-25-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-20-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-19-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-9-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-12-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-10-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-6-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-32-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-33-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-37-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-36-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-42-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-44-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-39-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-38-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-43-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-55-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-46-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-45-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-70-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-88-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-81-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-95-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-80-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-77-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-75-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-86-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-74-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-67-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-62-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-61-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-58-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-56-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-52-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-50-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-49-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-98-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/1268-99-0x0000000140000000-0x00000001401FA000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_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 5 api.ipify.org 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3932 set thread context of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_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 2008 cmd.exe 392 PING.EXE -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 392 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1268 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 1268 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1268 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe Token: SeImpersonatePrivilege 1268 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 3932 wrote to memory of 1268 3932 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 83 PID 1268 wrote to memory of 2008 1268 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 100 PID 1268 wrote to memory of 2008 1268 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe 100 PID 2008 wrote to memory of 392 2008 cmd.exe 102 PID 2008 wrote to memory of 392 2008 cmd.exe 102 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3932 -
C:\Users\Admin\AppData\Local\Temp\2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_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:1268 -
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\2024-11-23_3f6b461548bdf92e28da68177b1c6e5c_ryuk.exe"3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2008 -
C:\Windows\system32\PING.EXEping 1.1.1.1 -n 1 -w 30004⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:392
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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