Analysis

  • max time kernel
    142s
  • 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
    28-01-2024 20:23

General

  • Target

    2024-01-28_1ecee7b754feeba8166e97b0f498a5fc_cryptolocker.exe

  • Size

    77KB

  • MD5

    1ecee7b754feeba8166e97b0f498a5fc

  • SHA1

    8ff6e3f210859f57f62cb8d8e4268f6cde86291e

  • SHA256

    7caf80e5d6566ad1ff5f481887ebd5ce03fb413eb385296092c6dad17a3c24dd

  • SHA512

    52c6009ee0624816f3ff6bb60071edcbd58cd75ab88c4f2d08e27c82bfe0e8f7ef66e3dfd565ae98dc88b79ff6157366ed7687680c01aee971e0b0abb0f55bc6

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIufj0:vCjsIOtEvwDpj5H9YvQd2P0

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\2024-01-28_1ecee7b754feeba8166e97b0f498a5fc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-28_1ecee7b754feeba8166e97b0f498a5fc_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:208
    • 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:4152

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    77KB

    MD5

    2673e350d84c7c008c4137cda32d854d

    SHA1

    08e9032844139d5bd95b7152809aa7ddacc7dfc5

    SHA256

    c393168c8ef50a2bd8850afea2609cf169b209cbe29e42b0051a7dd00c930fec

    SHA512

    7a7d1ad4bb0bb6952fd2e6a810131a4a2feff7778a0a5479715012d6cb4c485066009a35a2effe2731af7ae13b5247c21904147eed2c36f286afa46deb0ac52c

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/208-0-0x0000000002300000-0x0000000002306000-memory.dmp

    Filesize

    24KB

  • memory/208-1-0x0000000002300000-0x0000000002306000-memory.dmp

    Filesize

    24KB

  • memory/208-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

    Filesize

    24KB

  • memory/4152-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4152-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB