Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/09/2026, 11:45

General

  • Target
    cryptsp.dll
  • Size 3.3MB
  • Sample260930-nwtspsvcnb
  • SHA256 97ed3be263adcba33b128c4dcf5a1bd6d5c1cc676b72366efac5fa88da66d07b
  • MD5 SHA1 SHA512 SSDEEP TLSH

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 4 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

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\cryptsp.dll,#1
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:3872

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/3872-0-0x0000000180000000-0x00000001807E1000-memory.dmp

        memory/3872-2-0x0000000180000000-0x00000001807E1000-memory.dmp

        memory/3872-1-0x0000000180000000-0x00000001807E1000-memory.dmp

        memory/3872-3-0x0000000180000000-0x00000001807E1000-memory.dmp