Analysis

  • max time kernel
    100s
  • max time network
    110s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250619-en
  • resource tags

    arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    13/07/2025, 16:56

General

  • Target
    letsvpn-latest.exe
  • Size 18.0MB
  • Sample250713-vf4rassp14
  • SHA256 77877a13d22fbbdce452791f3015823a3e9b1b48b3cdeb20c118814bfd9072b9
  • MD5 SHA1 SHA512 SSDEEP

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.

  • Themida packer 5 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\letsvpn-latest.exe
    "C:\Users\Admin\AppData\Local\Temp\letsvpn-latest.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks whether UAC is enabled
    PID:2324

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/2324-0-0x0000000140000000-0x000000014182E000-memory.dmp

        memory/2324-1-0x0000000140000000-0x000000014182E000-memory.dmp

        memory/2324-2-0x0000000140000000-0x000000014182E000-memory.dmp

        memory/2324-3-0x0000000140000000-0x000000014182E000-memory.dmp

        memory/2324-5-0x0000000140000000-0x000000014182E000-memory.dmp