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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/03/2024, 04:51

General

  • Target

    2024-03-19_aad863266e08ac32c964f2b1be535e1a_cryptolocker.exe

  • Size

    60KB

  • MD5

    aad863266e08ac32c964f2b1be535e1a

  • SHA1

    e6b271573616d1afce5fde737551cf133d8a467c

  • SHA256

    8cff0a98cc428824e9039ca0d53e1c26b82870131e664ddf067d30ed515a7c96

  • SHA512

    9d40d9a8e1a7cd4024cd4d392f6d7b2db4e1eab9dcf4393cab665fcc6dcc46371fc2e155601d117c2693aa32cb5fd3d5e72d8cb845d5e88f6383b54bcf441ce3

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8lB4dCOBy/cMFqeoYPO+FwNrip0:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+grN

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\2024-03-19_aad863266e08ac32c964f2b1be535e1a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-19_aad863266e08ac32c964f2b1be535e1a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1568
    • 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:4908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    ee8be3e9be076b4f66b68525dd2b7dc5

    SHA1

    b499ce90085cad83e0f59a6307b4b2c6fbc063de

    SHA256

    f31368471f9ec5a3e4b34c4945e73ca13984742a14497512760351861eab0dad

    SHA512

    749121849bef54182a05c6947ef6451e427abac0df177e1cc1bbcfd30c4e5d19d656feb7f104b50527d9960cc8e1cdf7516a46f8c1ef8b11c0d0c1d4f3bd15d0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1568-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1568-1-0x0000000000800000-0x0000000000806000-memory.dmp

    Filesize

    24KB

  • memory/1568-2-0x0000000000800000-0x0000000000806000-memory.dmp

    Filesize

    24KB

  • memory/1568-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/4908-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4908-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4908-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4908-48-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB