Analysis
- max time kernel
150s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
27/10/2026, 04:27
General
- Target c0bc406cdec8e4db45bf0f7c67e1335022f2b7ed2c69b8aae0b31591f19daf8c.exe
- Size 4.1MB
- Sample261027-e3kc6sys5r
- SHA256 c0bc406cdec8e4db45bf0f7c67e1335022f2b7ed2c69b8aae0b31591f19daf8c
Malware Config
Signatures
- 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.
- Executes dropped EXE 1 IoCs
- Themida packer 7 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 19 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c0bc406cdec8e4db45bf0f7c67e1335022f2b7ed2c69b8aae0b31591f19daf8c.exe"C:\Users\Admin\AppData\Local\Temp\c0bc406cdec8e4db45bf0f7c67e1335022f2b7ed2c69b8aae0b31591f19daf8c.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\XJStudio_49aca1b2\S1Mini.exe"C:\Users\Admin\AppData\Local\Temp\XJStudio_49aca1b2\S1Mini.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
S1Mini.exe
launcher.log
launcher.log
launcher.log
launcher.log
launcher.log
launcher.log
remoteservice.settings.yanyu.tmp
memory/4884-31-0x000000001C460000-0x000000001C470000-memory.dmp
memory/4884-0-0x0000000000550000-0x000000000096C000-memory.dmp
memory/4884-192-0x000000001C460000-0x000000001C470000-memory.dmp
memory/5176-17-0x0000000140000000-0x0000000140A2F000-memory.dmp
memory/5176-18-0x0000000140000000-0x0000000140A2F000-memory.dmp
memory/5176-15-0x0000000140000000-0x0000000140A2F000-memory.dmp
memory/5176-16-0x0000000140000000-0x0000000140A2F000-memory.dmp
memory/5176-8-0x0000000140000000-0x0000000140A2F000-memory.dmp
memory/5176-143-0x0000000140000000-0x0000000140A2F000-memory.dmp