Analysis

  • max time kernel
    137s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/01/2024, 06:01

General

  • Target

    2024-01-09_c3ece46bf8d69cf7ddb477b053ddea2a_cryptolocker.exe

  • Size

    38KB

  • MD5

    c3ece46bf8d69cf7ddb477b053ddea2a

  • SHA1

    2fe0ff18e5b8437b70fbb63f60f152a7960422b9

  • SHA256

    2469c249d439d42c9da68d2867279226c9eef33389f7046317a7dd51c2a8af9a

  • SHA512

    e133ca10f482522f4e091689abc060d9167d82c790fdff89d3d6845d6702329d2f2515465dea3408357f3c05969b0ccf01854d7cda27a62f789c49c365f95085

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvP7DMYaFw:m5nkFNMOtEvwDpjG8hP7DMBw

Score
7/10

Malware Config

Signatures

  • 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\2024-01-09_c3ece46bf8d69cf7ddb477b053ddea2a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-09_c3ece46bf8d69cf7ddb477b053ddea2a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3608
    • 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:4360

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    0392e0ea18d03a839159d5ce6dd3a82a

    SHA1

    953b909860b975a46716b6874f965230a3accd66

    SHA256

    832a442083aca982f33871df04ebee2b459b1d6180ac57f911224869045509a7

    SHA512

    9f22b870eec8e0fc67887f91ae0e167915bc2bec9ac5cb119d6391167aa06a700f914bd28c2614b6843992ea2e8a5c6117d4e77a465a6714c755a9237ce5d6a7

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3608-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3608-1-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/3608-2-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/3608-3-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB

  • memory/3608-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4360-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4360-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4360-23-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/4360-32-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB