Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/01/2024, 08:24

General

  • Target

    2024-01-28_1ba66a8e239ab75c87dcf4ce8dc7217c_cryptolocker.exe

  • Size

    57KB

  • MD5

    1ba66a8e239ab75c87dcf4ce8dc7217c

  • SHA1

    6c83c9e121e7dc38286657be8c9430381c5c594e

  • SHA256

    cafe6bc147468b2b0a968eddf61890d82e042cc432c2381f242163f4f1cb302f

  • SHA512

    90ba26e2a0d8c3e0cf415e09caa6d5f7d7d6eb1f4e45a4529f36bc5139650c581af45d46bb03bda581d7c572f5ee4085ce28634f39d5db1a03ae8e91d303b578

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Goi20HVeDgvT:xj+VGMOtEvwDpjubEgV20t

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-28_1ba66a8e239ab75c87dcf4ce8dc7217c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-28_1ba66a8e239ab75c87dcf4ce8dc7217c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:640
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2128

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    57KB

    MD5

    f946d8447ae171ef13d34618e826d3fa

    SHA1

    4eac8aa97bfd46318ea67794323a116fb5e257fc

    SHA256

    026161821ae2bf7f2b2ab69a8db2f4a484be36cbba80bb391084ab22c9eb8a52

    SHA512

    a83295f0d7eee9dcf40a0fdee8b6d7ee57368c3a90cf90b3fe0174a0ed78e54a47b996d69f9ff9d725e45fbbac81f728a69bbf38564f390bc87787a0e216cf62

  • C:\Users\Admin\AppData\Local\Temp\misids.exe

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/640-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/640-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/640-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/640-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/640-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2128-20-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2128-26-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/2128-47-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB