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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2024, 21:45

General

  • Target

    2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe

  • Size

    47KB

  • MD5

    eac429a798a111df3c486348376ddd18

  • SHA1

    f7c4093cf76302e9adfd8a90adf7cccb5b6b0b3f

  • SHA256

    baa1661ef0fb74775e7a5021aaf4a6c743ac775f4285e158f9d1d3cc65e2ec76

  • SHA512

    bb716b3462203a85b8052526019acc5f5db4f73cbf9601ae7d5c0cb62e3fa094286749a6d442c498b9d5e337c081a08e680cf3975d59cca833efa17dc7c8ff0f

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhTTHFACo:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+h

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2344
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4528

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    0a47163aca53707d4068edbf8fee77f7

    SHA1

    a757fff13668dc6f0507c847e0e41039ff343774

    SHA256

    9325ef7f933d5c6d60fe38272229d468fc56a60d89f3f2bc3c34fbb20cf0bd68

    SHA512

    a8e8e0f8a0df54d3141f67265c7e3db1a6aff8ab03224998fa7f1d00821fc566bf63e03e6be6165a7b6da201f697efec54e75250b5269387f1619fae46addcac

  • memory/2344-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2344-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2344-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2344-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2344-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB