Analysis
- max time kernel
149s - max time network
142s - platform
windows11-21h2_x64 - resource
win11-20250502-en - resource tags
- submitted
06/11/2025, 15:46
General
- Target file.exe
- Size 3.2MB
- Sample251106-s7p14syrck
- SHA256 7a3876b331ccea8dbb9a35183252575fc42646a55391de28528a021ab5e26dd3
Malware Config
Extracted
-
stealc
-
bestworker8455735771
-
http://178.16.54.175
-
url_path
/fc98bed393364b52.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.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 11 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵
-
-
C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
8F3CF5C3-4310-9C5F-C41B-D8F74CF3200F.txt
memory/3064-2-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-3-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-1-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-0-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-4-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-6-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-9-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-14-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-17-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-21-0x0000000140000000-0x0000000140896000-memory.dmp
memory/3064-25-0x0000000140000000-0x0000000140896000-memory.dmp