Analysis

  • max time kernel
    138s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/02/2024, 16:44

General

  • Target

    2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe

  • Size

    39KB

  • MD5

    4019e19c85dc8ff31bafe3ad3b418ade

  • SHA1

    107d218abf0bdb7e0edc750f8f9c9785b2d5936a

  • SHA256

    36b5591d768d76d1e81212e848e64004584a4f3d84bc8c3a5d524318034cb8bf

  • SHA512

    a335466e28b50570418bea116814d98e6fb0cdcf6371706183bd6724c4a9a1be28c8a4f44024441bd98d4073941b9382c5e7384e8dcc9a193a6d23f70f9a42ab

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/fK:6j+1NMOtEvwDpjrRHK

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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4600

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    a577e8569a4c2ab524bb6700f899cfc8

    SHA1

    72bce9933a8a07eb4a163328a276856ebde892b4

    SHA256

    b035616e3fff343ac25fe9568b8b41dbe1b901742c665646f9302c6046604d01

    SHA512

    18f1c21acd3bed862f015640b5ae6de40621533ec0638c3af0a61731a61d54b5e2eff9dd450c8dde537fbf219c287ffa08c5a6a19648e4d861dbc23158a57d83

  • memory/548-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/548-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/548-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/548-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/548-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4600-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4600-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4600-54-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB