Analysis

  • max time kernel
    132s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 04:34

General

  • Target

    2024-05-23_daeebe6e86cfeef0117437e165b4c421_cryptolocker.exe

  • Size

    55KB

  • MD5

    daeebe6e86cfeef0117437e165b4c421

  • SHA1

    56f3aead951b75b6325c6b1d8ad329bdba714e8e

  • SHA256

    ded57860447d25b0cded48b81fa16b535252c5fc09df9c7b61292eababa8283c

  • SHA512

    beeb28208848060182dfb11006ceacf7e8e6c1bee23346be3d036cffe5bc5f6e41ac6c406c6a5ec94c5fae2a7962ae9edad7e0a17337487fc5e3e9961e298c1c

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5Uj8:ZVxkGOtEvwDpjcF

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-23_daeebe6e86cfeef0117437e165b4c421_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_daeebe6e86cfeef0117437e165b4c421_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3948
    • 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:3204

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    55KB

    MD5

    32c14d68779fbbe423742a4cb11244e7

    SHA1

    82577e5df09cbcbc83a9701172c68861d644d78f

    SHA256

    00c672f279cd6ce6f110df9b76294e72fb9a5db15e486ed0fda1d4223db034f4

    SHA512

    3d4e0724bb880442455d4888047b9117a7f7d23022b42471e3625413b2736dd55899d32a5ced6e3a4463cf2494ee0ef00395fc9406d64662ae76933c176c6306

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3204-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3204-26-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/3204-20-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/3948-0-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/3948-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3948-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3948-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3948-17-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB