Analysis
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max time kernel
148s -
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
07-12-2024 01:54
Static task
static1
Behavioral task
behavioral1
Sample
2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe
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Size
4.1MB
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MD5
559a5c313cc49946be78eb255ec5d1f9
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SHA1
08d73de6c7c84aa2b617f060dacc79d93febff40
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SHA256
a2c102c31e5d952419c7f16428deda0a0165ef50954878d51e294eb575963165
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SHA512
dd99ed19af420a9ca77a63e40b9c25908d3105ada4eb95ca4d410e5ce77d70d2d99fbfba03d0f819cd5024ddbf2296d4a23bbdd11a3e37c3ac613b5f2bfa98d7
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SSDEEP
49152:Xl4UjB0jUu3PoPX+uNf39mJU7lBbj1YydVcMNVrvatv2BrNHxg5QqoZ1A:14UjKgucA
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
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 40 IoCs
resource yara_rule behavioral2/memory/4148-4-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-15-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-17-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-16-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-12-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-11-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-10-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-6-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-9-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-5-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-22-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-19-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-24-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-32-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-31-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-74-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-65-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-86-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-81-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-78-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-95-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-77-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-71-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-66-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-60-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-96-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-56-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-54-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-53-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-47-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-42-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-41-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-38-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-84-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-59-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-50-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-48-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-44-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-36-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral2/memory/4148-35-0x0000000140000000-0x00000001401FA000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe -
Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_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 16 api.ipify.org 17 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2520 set thread context of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_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 2084 cmd.exe 3584 PING.EXE -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 3584 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4148 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 4148 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4148 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe Token: SeImpersonatePrivilege 4148 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 2520 wrote to memory of 4148 2520 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 84 PID 4148 wrote to memory of 2084 4148 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 85 PID 4148 wrote to memory of 2084 4148 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe 85 PID 2084 wrote to memory of 3584 2084 cmd.exe 87 PID 2084 wrote to memory of 3584 2084 cmd.exe 87 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2520 -
C:\Users\Admin\AppData\Local\Temp\2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-07_559a5c313cc49946be78eb255ec5d1f9_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:4148 -
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\2024-12-07_559a5c313cc49946be78eb255ec5d1f9_ryuk.exe"3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2084 -
C:\Windows\system32\PING.EXEping 1.1.1.1 -n 1 -w 30004⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:3584
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