Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-05-2024 14:37

General

  • Target

    2024-05-12_8fcbdc78b725645ea2dd233fbdb1d487_cryptolocker.exe

  • Size

    42KB

  • MD5

    8fcbdc78b725645ea2dd233fbdb1d487

  • SHA1

    7f4fc37a023000a6cc9c7844112cd79c94de3d23

  • SHA256

    4dc08a42f2508163c1b23ca983f6ee3aa5dd33f94bb8f01ef563f5c4962e5aa0

  • SHA512

    8dd3b8b023d54f9f3ebfe2239ad1c1006dfffb7f1c749c4770d2e1f7224a956803964967301876ecd5fe5ac567f43aa3543103cf1d6781b282297cc5f0007a6e

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vFO:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL8

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\2024-05-12_8fcbdc78b725645ea2dd233fbdb1d487_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_8fcbdc78b725645ea2dd233fbdb1d487_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2476
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:868

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    3903f2347490837a15a26fdd5d5b7e17

    SHA1

    951effdbd69e1315cf7626bd9ef890e1ab2a69d1

    SHA256

    50d7285cb1cc2497c724a38cfb64747429b51d683fe88b0b00d918116ea8d85b

    SHA512

    fb12c0744176f52ccdfcd3ec6057b77cccc92ada805088a8740913ef15cfcb5767bca10a3be2702e132fdea8304154d5274767d9ee4d4d49c2d3d2f57a6cee7b

  • memory/868-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/868-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/868-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/2476-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2476-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2476-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2476-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2476-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB