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Analysis

  • max time kernel
    89s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2024, 03:27

General

  • Target

    2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe

  • Size

    48KB

  • MD5

    3bfd8b21a50c467c67784cbe9fae448b

  • SHA1

    7e1461d78fa167d5276bf7d64ed4fe6de8d002aa

  • SHA256

    b0451da6fe0ea8d2dd931e203b9cabbc5cecdeddc7562c67803cb16bfc653158

  • SHA512

    fdfb85e7c9c414c0e83125ad6b8b6edc3b65010e3ffe1aa54738808b549f161631a73c4387a025a705b8852698b2c2d55e2142a3f7446a2fae5a032d2d4524f3

  • SSDEEP

    1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAID:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1432
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    da3faf22af078f6865341bab8bd4f166

    SHA1

    b935ad0cfbde907d94480c7c5b39f172ca58915a

    SHA256

    97f2c339f90cf344d73cfb544283db73917903abce93eee0ce0a0f92524bd019

    SHA512

    42ecebcc358955641328dc4866b84d9f33ecfc0e9b40435dd9c4e76fb554abf99ad26551f0777c8dad8aef8b56cd3a422eacba5ed359e749930230bc8e6d0075

  • memory/1432-0-0x0000000002180000-0x0000000002186000-memory.dmp

    Filesize

    24KB

  • memory/1432-1-0x0000000002180000-0x0000000002186000-memory.dmp

    Filesize

    24KB

  • memory/1432-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/3076-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB