Analysis
- max time kernel
94s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
14/11/2024, 10:08
General
- Target ba62e9e2f8ace5672fbc814db0b5fbd5a2d0a5d2d8ef55fd359e91ac756b4bbc.exe
- Size 2.1MB
- Sample241114-l6caas1mar
- SHA256 ba62e9e2f8ace5672fbc814db0b5fbd5a2d0a5d2d8ef55fd359e91ac756b4bbc
Malware Config
Extracted
-
stealc
-
tale
-
http://185.215.113.206
-
url_path
/6c4adf523b719729.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Stealc family
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Loads dropped DLL 1 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ba62e9e2f8ace5672fbc814db0b5fbd5a2d0a5d2d8ef55fd359e91ac756b4bbc.exe"C:\Users\Admin\AppData\Local\Temp\ba62e9e2f8ace5672fbc814db0b5fbd5a2d0a5d2d8ef55fd359e91ac756b4bbc.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\ba62e9e2f8ace5672fbc814db0b5fbd5a2d0a5d2d8ef55fd359e91ac756b4bbc.exe" & del "C:\ProgramData\*.dll"" & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
chrome.dll
memory/4324-0-0x0000000000EF0000-0x000000000162B000-memory.dmp
memory/4324-1-0x00000000779C4000-0x00000000779C6000-memory.dmp
memory/4324-2-0x0000000000EF1000-0x0000000000F59000-memory.dmp
memory/4324-3-0x0000000000EF0000-0x000000000162B000-memory.dmp
memory/4324-10-0x0000000000EF0000-0x000000000162B000-memory.dmp