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Analysis

  • max time kernel
    140s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/08/2023, 15:53

General

  • Target

    5d38b41a06c7a4bb5c3a28e81c4e3798_cryptolocker_JC.exe

  • Size

    80KB

  • MD5

    5d38b41a06c7a4bb5c3a28e81c4e3798

  • SHA1

    495f647d3057d0837856a6603fe355ca3210d9a1

  • SHA256

    767ae5cf076926d2e6fe4bf0665244ca9d5fc97610d6443c28910d14fc92e7cb

  • SHA512

    ae34f9f366564398b1d52f12828b7b9acf4596660b9000fc9f5a0dd5f51c63b663009d0c1840d8f76e181a7c3b0498a449313e50ff025fa8c0117f86a63c4966

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUn:i5nkFGMOtEvwDpjNbwQEI8UtzNcOc

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\5d38b41a06c7a4bb5c3a28e81c4e3798_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\5d38b41a06c7a4bb5c3a28e81c4e3798_cryptolocker_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1472
    • 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:3448

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    80KB

    MD5

    2f59c358a64ccb54978be69a07e611e7

    SHA1

    f6d36594149cdb852bad22027beba1325a68540c

    SHA256

    f55b0f01a66659a89cc285f4edd97aa40fce4a41022f965a5a34c2dec0235a30

    SHA512

    da91d6a1d9f0627497687d30e8fa4fbd5c1d048a9fb0907754fc6d74f723c1ffae39e7a6f42e50d783b3e5fc46e10c3fcc2e61f9938bca2f97b8a2781c2d763e

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

    Filesize

    80KB

    MD5

    2f59c358a64ccb54978be69a07e611e7

    SHA1

    f6d36594149cdb852bad22027beba1325a68540c

    SHA256

    f55b0f01a66659a89cc285f4edd97aa40fce4a41022f965a5a34c2dec0235a30

    SHA512

    da91d6a1d9f0627497687d30e8fa4fbd5c1d048a9fb0907754fc6d74f723c1ffae39e7a6f42e50d783b3e5fc46e10c3fcc2e61f9938bca2f97b8a2781c2d763e

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

    Filesize

    80KB

    MD5

    2f59c358a64ccb54978be69a07e611e7

    SHA1

    f6d36594149cdb852bad22027beba1325a68540c

    SHA256

    f55b0f01a66659a89cc285f4edd97aa40fce4a41022f965a5a34c2dec0235a30

    SHA512

    da91d6a1d9f0627497687d30e8fa4fbd5c1d048a9fb0907754fc6d74f723c1ffae39e7a6f42e50d783b3e5fc46e10c3fcc2e61f9938bca2f97b8a2781c2d763e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1472-136-0x00000000021A0000-0x00000000021A6000-memory.dmp

    Filesize

    24KB

  • memory/1472-133-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1472-135-0x0000000002280000-0x0000000002286000-memory.dmp

    Filesize

    24KB

  • memory/1472-151-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1472-134-0x0000000002280000-0x0000000002286000-memory.dmp

    Filesize

    24KB

  • memory/3448-150-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3448-154-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3448-153-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3448-182-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB