Analysis

  • max time kernel
    93s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/12/2023, 01:18

General

  • Target

    Prax.dll

  • Size

    5.4MB

  • MD5

    ad6bf6c37d545b51df1ae3670f911020

  • SHA1

    fc32a802c09a4d91257edaf993f5d0f65d368d04

  • SHA256

    6b03618ea53f12d9ce51476599362e5f503b3a020f22b80dd2ad7d1be4b5add5

  • SHA512

    a90e08e457aaebd68915627c8aae5ad4e2626f712cc10578cd3ffd97e358c98ad36f8226068bf0343e1b5d9bdb2dda52d52bb526827d63671836569d626a7adb

  • SSDEEP

    98304:Ro+ZRKELs7IM7RnLYQQaLZBKSFE0aypzLUbfkKLjowtgPrILFfrN1mwb:9KYWIARnkQQaPKSFE05JUbsKvNe4D6wb

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Themida packer 8 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
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Prax.dll,#1
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Blocklisted process makes network request
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:2480

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2480-0-0x00007FF958900000-0x00007FF9596E3000-memory.dmp

          Filesize

          13.9MB

        • memory/2480-1-0x00007FF977030000-0x00007FF977225000-memory.dmp

          Filesize

          2.0MB

        • memory/2480-2-0x00007FF958900000-0x00007FF9596E3000-memory.dmp

          Filesize

          13.9MB

        • memory/2480-3-0x00007FF958900000-0x00007FF9596E3000-memory.dmp

          Filesize

          13.9MB

        • memory/2480-4-0x00007FF958900000-0x00007FF9596E3000-memory.dmp

          Filesize

          13.9MB

        • memory/2480-5-0x00007FF958900000-0x00007FF9596E3000-memory.dmp

          Filesize

          13.9MB

        • memory/2480-6-0x00007FF958900000-0x00007FF9596E3000-memory.dmp

          Filesize

          13.9MB

        • memory/2480-7-0x00007FF958900000-0x00007FF9596E3000-memory.dmp

          Filesize

          13.9MB

        • memory/2480-8-0x00007FF958900000-0x00007FF9596E3000-memory.dmp

          Filesize

          13.9MB

        • memory/2480-12-0x00007FF977030000-0x00007FF977225000-memory.dmp

          Filesize

          2.0MB