Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/03/2024, 06:34

General

  • Target
    c53644f981d9b9aa02e181f3892b397a.exe
  • Size 148KB
  • Sample240313-hb4jhsfa2s
  • SHA256 0153f6a3837464d1dfdc6552859c300c559f19ba096c9ad29d912acb0ffc74fc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c53644f981d9b9aa02e181f3892b397a.exe
    "C:\Users\Admin\AppData\Local\Temp\c53644f981d9b9aa02e181f3892b397a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Carebaby.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Carebaby.exe"
      2⤵
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      PID:2568

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        CareBaby.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\CareBaby.exe
        • Size 38KB
        • SHA256 468a5636745296e846ed16a967d93adff13bfaad9ebe5c4c7dc6c7176385952a
        • MD5 SHA1 SHA512 SSDEEP

        memory/2244-0-0x0000000000400000-0x0000000000426000-memory.dmp

        memory/2244-20-0x0000000000400000-0x0000000000426000-memory.dmp

        memory/2568-19-0x0000000000400000-0x0000000000416000-memory.dmp

        memory/2568-21-0x0000000000400000-0x0000000000416000-memory.dmp