Analysis

  • max time kernel
    93s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-04-2024 02:37

General

  • Target

    2024-04-06_6124a68918ac90b10cef4a57688a2070_cryptolocker.exe

  • Size

    48KB

  • MD5

    6124a68918ac90b10cef4a57688a2070

  • SHA1

    23ed578166e956a806622eac223e83c526cca7a5

  • SHA256

    64889e7b205ed2830cde52f35d84a5efc77dd515372a93614bb3ade1a04a312b

  • SHA512

    46be241da7bfc47f5f709e051b5b7158eae8cd5edbc12fe7ac64025abacf6166e2dc500423d8e1f32702174528aa7da0647da07f6562feca996de5a94a54c189

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ15xB7B:ZVxkGOtEvwDpjc8

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\2024-04-06_6124a68918ac90b10cef4a57688a2070_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-06_6124a68918ac90b10cef4a57688a2070_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4848
    • 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:1196

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    528cec64d285f262c51566c2d92cb5e5

    SHA1

    ba7d6547fafb71ec27353a8b22e52c250a5443c0

    SHA256

    891f413a369eea05df7a0c3387f54461e702a728d9f52c4ec8ca97ba0ffcf83b

    SHA512

    22ada2f01dad2b7e9306916b04e3d0e8d57aa5fb03d53d676e6248a3e2fedc0e348f118f2e7dd6222abc676319b5c0f0dfe738f9ba7e637d2407eeb86c173a86

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1196-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1196-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4848-0-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/4848-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4848-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4848-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4848-17-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB