Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/03/2024, 12:38

General

  • Target

    2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe

  • Size

    57KB

  • MD5

    e26ff80798321ba13a6ac3105623c82a

  • SHA1

    c80950fbfaa094eaef3e7a2164afe62f8c7df1f8

  • SHA256

    6785b0cf829a8acce7c4b5e6138cf2fc57909728526f6c0c2f24594b4d262dd2

  • SHA512

    65a394df5647b606f1f14879b7091d6c0f3e172d7b13059190050da1525d20a5cc14c76baffe244e5050d6eb515b48e2fedb520aeb528140bc103463a1858722

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Gowfj6Eit:xj+VGMOtEvwDpjubEgC

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4980
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:552

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    57KB

    MD5

    2108a2fb6db1e3ada8493e11c0b7eb4a

    SHA1

    fe2d58422dadffadb76c0ff642c0772c6a30588a

    SHA256

    06a53de3a73f181231dd4776db63ce76b541b9144d60c54eed737a76d8bfd7f6

    SHA512

    5219dfce08802d32e096c3de9e23a99b7816ad9e4851a74ae6e5a96572c597ca482c3df9811e9de1001e570bb51b5f314082b60c84b276e19a4ac3f9c90bb574

  • memory/552-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/552-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/552-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/552-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4980-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4980-1-0x0000000000830000-0x0000000000836000-memory.dmp

    Filesize

    24KB

  • memory/4980-2-0x0000000000830000-0x0000000000836000-memory.dmp

    Filesize

    24KB

  • memory/4980-3-0x0000000000860000-0x0000000000866000-memory.dmp

    Filesize

    24KB

  • memory/4980-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB