Analysis

  • max time kernel
    127s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/08/2023, 11:02

General

  • Target

    527c4402e4217cc3daee1c64fdad6c15_cryptolocker_JC.exe

  • Size

    36KB

  • MD5

    527c4402e4217cc3daee1c64fdad6c15

  • SHA1

    357bd41135af1187c58bacc410dd5d84a9ee9952

  • SHA256

    fe400bb272f9b2e0c105d75cd75753b6af0b2f3204123b615bf7fefdf7959edd

  • SHA512

    03e78aeda31982fa310e79143d08c54c8e81ad7ce2bbe8f4183e53758d322bb89c5fca6f0ee3db7f6bb36f316d0e30ac31998167b07e56f48a993fd89c14dab2

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjxgqKSyA5SQr5/xleY/:ZzFbxmLPWQMOtEvwDpjxj5///

Score
7/10

Malware Config

Signatures

  • 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\527c4402e4217cc3daee1c64fdad6c15_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\527c4402e4217cc3daee1c64fdad6c15_cryptolocker_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3996
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4396

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    2aca2be3ac0441034aa1ba853e97310d

    SHA1

    3b4a255d85e9cb699110c2a724654f11907d1021

    SHA256

    68795b1adb37e8f413a19f3c2a18bb803525ad69a32663ec7c0d5823f7e8b873

    SHA512

    3e96d79dc711e61941e41a04190f6a4917521cef78d86ebb4b6f1c7cd2b476ff0321dd4334740f001c3dea54db1543b7fe7fbded029de17e514ddbf61532abed

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

    Filesize

    37KB

    MD5

    2aca2be3ac0441034aa1ba853e97310d

    SHA1

    3b4a255d85e9cb699110c2a724654f11907d1021

    SHA256

    68795b1adb37e8f413a19f3c2a18bb803525ad69a32663ec7c0d5823f7e8b873

    SHA512

    3e96d79dc711e61941e41a04190f6a4917521cef78d86ebb4b6f1c7cd2b476ff0321dd4334740f001c3dea54db1543b7fe7fbded029de17e514ddbf61532abed

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

    Filesize

    37KB

    MD5

    2aca2be3ac0441034aa1ba853e97310d

    SHA1

    3b4a255d85e9cb699110c2a724654f11907d1021

    SHA256

    68795b1adb37e8f413a19f3c2a18bb803525ad69a32663ec7c0d5823f7e8b873

    SHA512

    3e96d79dc711e61941e41a04190f6a4917521cef78d86ebb4b6f1c7cd2b476ff0321dd4334740f001c3dea54db1543b7fe7fbded029de17e514ddbf61532abed

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3996-133-0x0000000000490000-0x0000000000493000-memory.dmp

    Filesize

    12KB

  • memory/3996-134-0x00000000006F0000-0x00000000006F6000-memory.dmp

    Filesize

    24KB

  • memory/3996-135-0x00000000006F0000-0x00000000006F6000-memory.dmp

    Filesize

    24KB

  • memory/3996-136-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/3996-150-0x0000000000490000-0x0000000000493000-memory.dmp

    Filesize

    12KB

  • memory/4396-152-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4396-153-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB