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Analysis

  • max time kernel
    141s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/08/2023, 16:17

General

  • Target

    99385ff78d67f61bd25acf66f75d4dea_cryptolocker_JC.exe

  • Size

    62KB

  • MD5

    99385ff78d67f61bd25acf66f75d4dea

  • SHA1

    ef0e076d3b63de5a93e52330fb118911556a88b6

  • SHA256

    11d6a62dcb5c288b0d2019a96320f6b9ff39b2d8d034b9b3a05ae63539387c46

  • SHA512

    813f7aa55508a9a87d372361000022570ab79bff841ac784887fdc1b374fee369bb43c27ddaf09838e59929d99937b9fe855d60c6ce500a1ccb9a41dd6f810c9

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfb6kZq/gqASiLRNcK1JKnz:xj+VGMOtEvwDpjub6kZq8hLRlJKz

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\99385ff78d67f61bd25acf66f75d4dea_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\99385ff78d67f61bd25acf66f75d4dea_cryptolocker_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1616
    • 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:540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    3891826cd4c5d001792c813576200390

    SHA1

    3526f866956de05ea7640f9afb8646e513c675c3

    SHA256

    ad1d9762b4fe4bdf09135480cdf91eadc8f3809508570494dac97d8b67e19e76

    SHA512

    d7b6c35d68e84c73370a7dad22852abd1d2f6136425fbc5b5d3d52b127f157b41d522e7bd669383344a8a6e8376adc22603c4daff78eb33d984e5346adc13003

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

    Filesize

    62KB

    MD5

    3891826cd4c5d001792c813576200390

    SHA1

    3526f866956de05ea7640f9afb8646e513c675c3

    SHA256

    ad1d9762b4fe4bdf09135480cdf91eadc8f3809508570494dac97d8b67e19e76

    SHA512

    d7b6c35d68e84c73370a7dad22852abd1d2f6136425fbc5b5d3d52b127f157b41d522e7bd669383344a8a6e8376adc22603c4daff78eb33d984e5346adc13003

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

    Filesize

    62KB

    MD5

    3891826cd4c5d001792c813576200390

    SHA1

    3526f866956de05ea7640f9afb8646e513c675c3

    SHA256

    ad1d9762b4fe4bdf09135480cdf91eadc8f3809508570494dac97d8b67e19e76

    SHA512

    d7b6c35d68e84c73370a7dad22852abd1d2f6136425fbc5b5d3d52b127f157b41d522e7bd669383344a8a6e8376adc22603c4daff78eb33d984e5346adc13003

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/540-154-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/540-150-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/540-153-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/540-182-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1616-136-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/1616-135-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/1616-151-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1616-133-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1616-134-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB