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Analysis

  • max time kernel
    152s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/02/2024, 17:34

General

  • Target

    2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe

  • Size

    146KB

  • MD5

    471d53fe701869fedf68910e1d0db319

  • SHA1

    87c5c57ebe8a20d750aad16fda26db3fd572511c

  • SHA256

    d06a3c727ddcb990176927874132dcdd6143cff44695f606540cc9d7c12041b0

  • SHA512

    97a955ec6820dcf1e2d79fedafc44918dafd9d0abcf968628c906a5e3ee1002884df4782ec99c45587316572ec249d13ad596682c649d84a5eee3274ec3be8f7

  • SSDEEP

    1536:V6QFElP6n+gMQMOtEvwDpjQGYQbxGYQbxGYQbPlooHPPFyL:V6a+pOtEvwDpjt22a

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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\2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1148
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4452

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    147KB

    MD5

    cff46c00097feb7cf07c4da514a8efc4

    SHA1

    b3af3fef36d88b9476be66a45deaf874439a61ba

    SHA256

    08954d9d0228519bc61ea8f51cca42a7dae8c63bfd14ec4242e46d1a8f6b9c7e

    SHA512

    2f75c9f156e41b502b715891f5490ae0587a8f30720b2d7664eba5b61859558005b4b92e33ac6121404187b2c4e35f40eb0a828a49874903ab1f8a5e1028a696

  • memory/1148-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1148-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1148-2-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/4452-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4452-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB