Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-04-2024 03:44

General

  • Target

    2024-04-17_599c093fc60f8ebfb2c83d2a8572ceeb_cryptolocker.exe

  • Size

    38KB

  • MD5

    599c093fc60f8ebfb2c83d2a8572ceeb

  • SHA1

    4273eab410a394ad051fdb4e159b151d4e64b008

  • SHA256

    7be442b58f7e3a44a8b40709e9cd8ee1f2ea55e1f6b2e4676baa157bdff38b66

  • SHA512

    25646caa75af4d9cd1bafec9b03e98a0a37f1e96f4ade96ef25116078146ba1c93278b5c8d4187f8b11181fc182841f4a048a09e9f90ecaee5b72f02c5090dbb

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLpz:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLN

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-04-17_599c093fc60f8ebfb2c83d2a8572ceeb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-17_599c093fc60f8ebfb2c83d2a8572ceeb_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4928
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    f43e47cb24c5a6a2373498fd4b5029c4

    SHA1

    207363e6fb45fea404ab860ec6db6cb46f29c0fb

    SHA256

    39ef5b8db196b34b60f6e8dbef084d3e49b2202bbed6a36dd23f695da2181df7

    SHA512

    9a2d727b3107c11aa5c90679e84fa490e0abe23d7fa4496d794c986a61a5bfb806e907c4a3ef8e2ac9fc96c6d35f71a183a47e83b5a5a73566d0728308782d98

  • memory/2368-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2368-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2368-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4928-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4928-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/4928-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/4928-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/4928-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB