Analysis

  • max time kernel
    120s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/01/2024, 23:04

General

  • Target

    2024-01-18_901c5b7b3e530fe0a1310112d1f4d562_cryptolocker.exe

  • Size

    59KB

  • MD5

    901c5b7b3e530fe0a1310112d1f4d562

  • SHA1

    f81e0b9e8588fa9b6ffb7f5fe194149c49ebddbf

  • SHA256

    1e5b14efa3f83473455d783a4c94530265657a6da9bfe0ef78c4ae37208c14b5

  • SHA512

    44d50d9085faf7fede0355693ecbbf7be78b95b951f2f2378cc6ec34b829136a78332f6b8811dd99aa3bcfe33a703fedbc31e0977e9c2aaab4f0255a628eaf4b

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoFwD3:xj+VGMOtEvwDpjubEgywL

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-18_901c5b7b3e530fe0a1310112d1f4d562_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_901c5b7b3e530fe0a1310112d1f4d562_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2180
    • 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:4956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    59KB

    MD5

    7d19139b87056aee6b25bae15dfb10fc

    SHA1

    a0888f6494e9ef3f6399f0418b5078e8cd0dfde4

    SHA256

    34f3e087c4f29ee7b7f3d854da66638cc7c652e7b9868b76848bc5102387fc6b

    SHA512

    113fee113b14da2353cf939cc657c855354cef13040a42f008c7de9be49f96d0a50a09b5d373f3e10b3d1f5dab8f58de72b2357ee407e057f99620eb600f365a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2180-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/2180-2-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/2180-3-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4956-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/4956-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/4956-50-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB