Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
07/11/2024, 02:05
General
- Target 2024-11-07_b3e5ea8b0d97c245897b590596063e79_ryuk.exe
- Size 3.6MB
- Sample241107-chynysvpej
- SHA256 777cb9e04ba8f8602d802e45648c73923450c2c19b26c613a5001168727feff3
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
6
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extensions
none
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grabber_max_size
1.048576e+06
-
links
none
-
port
15666
-
self_destruct
true
Signatures
- Meduza
Meduza is a crypto wallet and info stealer written in C++.
- Meduza Stealer payload 5 IoCs
- Meduza family
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-11-07_b3e5ea8b0d97c245897b590596063e79_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-07_b3e5ea8b0d97c245897b590596063e79_ryuk.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\2024-11-07_b3e5ea8b0d97c245897b590596063e79_ryuk.exeC:\Users\Admin\AppData\Local\Temp\2024-11-07_b3e5ea8b0d97c245897b590596063e79_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
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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\2024-11-07_b3e5ea8b0d97c245897b590596063e79_ryuk.exe"3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\PING.EXEping 1.1.1.1 -n 1 -w 30004⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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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
1Replay Monitor
Loading Replay Monitor...
Downloads
memory/2796-0-0x0000000140000000-0x000000014013E000-memory.dmp
memory/2796-2-0x0000000140000000-0x000000014013E000-memory.dmp
memory/2796-1-0x0000000140000000-0x000000014013E000-memory.dmp
memory/2796-3-0x0000000140000000-0x000000014013E000-memory.dmp
memory/2796-12-0x0000000140000000-0x000000014013E000-memory.dmp