Analysis

  • max time kernel
    142s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/07/2024, 01:25

General

  • Target

    sigima.exe

  • Size

    3.9MB

  • MD5

    032496eafa4a0b110d8c37b4c995228c

  • SHA1

    3531c2a5723be8a775a1784e434a9c8943ba4f1a

  • SHA256

    e9ebb65e312f6e7ecd0d3637c85b64e18ff92949a740f98deeba23d415c14c0c

  • SHA512

    ceafb86a8a5810343bcdcaacb627555a7c31347c8d08deef19fe19f3449ead663ea3c81bcdcad52484552070f4a454bd0ca0507b0aef002ed61eaaa1a0a0a884

  • SSDEEP

    98304:VFkMoq8JwkyKiWnA7FJ1I8j5haEdt9iDMDN:0i8/yKOJd/ZdtQoDN

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Sets service image path in registry 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sigima.exe
    "C:\Users\Admin\AppData\Local\Temp\sigima.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Sets service image path in registry
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: LoadsDriver
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2560
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c color 0A
      2⤵
        PID:4544

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2560-0-0x0000000140000000-0x0000000140BCC000-memory.dmp

      Filesize

      11.8MB

    • memory/2560-1-0x0000000140000000-0x0000000140BCC000-memory.dmp

      Filesize

      11.8MB

    • memory/2560-3-0x0000000140000000-0x0000000140BCC000-memory.dmp

      Filesize

      11.8MB

    • memory/2560-2-0x0000000140000000-0x0000000140BCC000-memory.dmp

      Filesize

      11.8MB

    • memory/2560-4-0x00007FFDB3490000-0x00007FFDB3492000-memory.dmp

      Filesize

      8KB

    • memory/2560-14-0x0000000140000000-0x0000000140BCC000-memory.dmp

      Filesize

      11.8MB