Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/05/2024, 11:28

General

  • Target

    2024-05-02_43a761abe4b34239e69e2fb1f09a05a2_cryptolocker.exe

  • Size

    47KB

  • MD5

    43a761abe4b34239e69e2fb1f09a05a2

  • SHA1

    18bb40036172fa691ff298f92e19a2f8ce6d6e1d

  • SHA256

    6f168d65512a714cc3a36710b364b86e2971fc13486b3c5bc0966ab58ee9a725

  • SHA512

    415a2c271d8c3883c7d3c860aa4c29f8997e56e7d22b18145dd7785323db19ad0262d5270227c2bc3e629ae0f6adf6c60707ce575e62e4c41f292272636c4b40

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB03:vj+jsMQMOtEvwDpj5HczerLO04BU

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-02_43a761abe4b34239e69e2fb1f09a05a2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-02_43a761abe4b34239e69e2fb1f09a05a2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2324
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    e8897fa0d624657717d76fa2acac9f55

    SHA1

    6dcf2d2e800915e8fb623ed9a54e22d22d4df6e3

    SHA256

    7aa46c825d0099c10120aeef3827f48bbc28a03e08f53b0f7fa7c983428ac32f

    SHA512

    b5ee23aa87f281b186a1a06f97a0a25ca8989232baa619c57e5f5940c4676f9f2deed0fe5504f07c26957652bb24d202ee0c8948f5036e517703b2b47b18b8cf

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2324-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2324-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2324-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2764-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2764-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB