Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/07/2026, 10:55

General

  • Target
    1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd.dll
  • Size 3.4MB
  • Sample260706-mz4xeah18n
  • SHA256 1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd
  • 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 6 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\1ecf57b132d095bcccf85edc7615173355d224b9352f975a6494e78f11b101fd.dll,#1
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1208
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 716
        3⤵
        • Program crash
        PID:3200
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1208 -ip 1208
    1⤵
      PID:2068

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1208-0-0x0000000010000000-0x0000000010859000-memory.dmp

          memory/1208-1-0x0000000010000000-0x0000000010859000-memory.dmp

          memory/1208-2-0x0000000010000000-0x0000000010859000-memory.dmp

          memory/1208-3-0x0000000010000000-0x0000000010859000-memory.dmp

          memory/1208-4-0x0000000010000000-0x0000000010859000-memory.dmp

          memory/1208-8-0x0000000010000000-0x0000000010859000-memory.dmp