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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 12:17

General

  • Target

    2024-01-06_e4f999b18da32a3a08841c0c1908701e_cryptolocker.exe

  • Size

    56KB

  • MD5

    e4f999b18da32a3a08841c0c1908701e

  • SHA1

    ac5c88e85b8544518a8798283d373ff1868ae4b4

  • SHA256

    444285996b8cf05a7c309ac65a22f81d22f2a062fe2d6d1847f065f866fd1ca5

  • SHA512

    78b3b340e92c70af8b645d06583ef390e55392d0f894c1831425282a19f3be1c471470d018e32bd9ee2411e2760d45a40ef6c37821a5e07ca486ef1fb42a11bb

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Gowfj6EiU:xj+VGMOtEvwDpjubEgv

Score
7/10

Malware Config

Signatures

  • 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\2024-01-06_e4f999b18da32a3a08841c0c1908701e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_e4f999b18da32a3a08841c0c1908701e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4488
    • 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:4964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/4488-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4488-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4488-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4488-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4488-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4964-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/4964-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4964-46-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB