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Analysis

  • max time kernel
    145s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 12:06

General

  • Target

    2024-01-06_23ad36f11ffffe20ec9e03bc6c4c970e_cryptolocker.exe

  • Size

    85KB

  • MD5

    23ad36f11ffffe20ec9e03bc6c4c970e

  • SHA1

    3b66dc9b597c6ae1ffda7120d3f1a9f2cd2cca91

  • SHA256

    0cd3998f9789c341d38bbc88b57f3a0ddaf7777f593eb6ef063ee9b86706c7c9

  • SHA512

    7d0a5b42af68df7b5c81f174e6d0e02d62a552ec6fefde83e81b1df7a4a934acfa8a41c6368936cef14089b95c70cab49daa37d4c1a44be138c0bfe87a317008

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvzkxGoHw:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8zuQ

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_23ad36f11ffffe20ec9e03bc6c4c970e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_23ad36f11ffffe20ec9e03bc6c4c970e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4876
    • 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:3272

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    85KB

    MD5

    33731ce469a14e78363f8ca33344936f

    SHA1

    2637b2a79ed03c94fb3ef876f700c309e5d4fb54

    SHA256

    a7c70316bc4a763cb4542a29c2c8fea7052794dbfcfcfc3a11155978501a2045

    SHA512

    584d2926b0c54f5bf0af7c27311a79d2322e15193f51eacee3503ccfb5b73773c188490a6fd5e9c5f959a437ef2796830444a5c4631f63f0b479b88d64656a0d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3272-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3272-20-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/3272-39-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4876-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4876-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4876-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4876-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4876-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB