Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
28-01-2025 01:32
Static task
static1
Behavioral task
behavioral1
Sample
2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe
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Size
2.2MB
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MD5
a401470eac65e49052158c5432a07a1f
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SHA1
50c1d6c5252880744a5882c6ca82af5490a80e3e
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SHA256
f7fb6eef17d2f1e68b034affcfd4334644a81c821db8ce55c25fa8e3f5a3f3c6
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SHA512
9c1cbfccc20f4b7c479f39261505051124c3e896b35cb6b4ac1f1b47bc47628767cd659e9f4f9cc8a7c1fd0242ad5f30437eb53b6adb10733a3e7ad3c51ef8c5
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SSDEEP
24576:HtMUOrqOMgOQ1wiy36RV+iXN+7c4umCMxIFM5UXQvhacZhRv1zgZln:NMUQOgwi7RVZXNoumhxIqU0h+ln
Malware Config
Extracted
meduza
62.210.116.3
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anti_dbg
true
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anti_vm
true
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build_name
mertafan
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extensions
.txt; .doc; .xlsx
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grabber_max_size
4.194304e+06
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port
15666
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self_destruct
false
Signatures
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Meduza Stealer payload 2 IoCs
resource yara_rule behavioral2/memory/4572-0-0x0000000140000000-0x000000014013F000-memory.dmp family_meduza behavioral2/memory/4572-9-0x0000000140000000-0x000000014013F000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_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 4 api.ipify.org 5 api.ipify.org -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4572 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe 4572 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4572 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe Token: SeImpersonatePrivilege 4572 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-28_a401470eac65e49052158c5432a07a1f_cobalt-strike_ryuk.exe"1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4572