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Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 03:35

General

  • Target

    2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe

  • Size

    61KB

  • MD5

    573cae1b1b7bf781691d6cf6e8b0963b

  • SHA1

    108b457f3e3f9486f1566cafdf5a830025329642

  • SHA256

    6ce637c7791fb0b2fc8939501d5df1062090165665544589df567a721cfc4e7f

  • SHA512

    8a7f78a65d433caa7b0bdade0231ca0f1641a1e9fd2aaf41a51d6f447eee633e429fca95fb84d0a39b2d150ac5eb6d0b88c2856f58a756446ec06ef3743e3ad2

  • SSDEEP

    1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzp0oj670hr:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7g

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\2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2276
    • 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:2800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    61KB

    MD5

    e4674ee4f7800178f8121e635418423a

    SHA1

    e48fbbe705dbdb17299cfa024d9af91489244b3e

    SHA256

    af21e8fd9da72f6f4723660a5d4e01eba60170435237ade2f56dc6f329746167

    SHA512

    0ca0fa9e283e00fd13d055056f3a9a68aacfdca96f037ab40a9ea34510ccba7986483e52a61724bbea9acd6f5deb7e180f07caa09f6140e769d6e9c3c976e944

  • memory/2276-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2276-1-0x0000000000580000-0x0000000000586000-memory.dmp

    Filesize

    24KB

  • memory/2276-0-0x0000000000580000-0x0000000000586000-memory.dmp

    Filesize

    24KB

  • memory/2800-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB