Analysis

  • max time kernel
    141s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2023, 21:41

General

  • Target

    NEAS.2023-09-05_827cd6179e9a6c20a25141afe0cd39f3_cryptolocker_JC.exe

  • Size

    66KB

  • MD5

    827cd6179e9a6c20a25141afe0cd39f3

  • SHA1

    84f325c7e9922fcc82938ca5a1ed8eab55131a5e

  • SHA256

    ee37e169f9e35aee337de2471b1fbb57bf83654330854896001bed76210c64e7

  • SHA512

    6f1a4723f329baeffc9821c81d3c21d2101d5530156348d3a76a55409a5f347499dbab1020132efea4f01a9a68e83f52a81492d6336c8829b3d14a8b53e16026

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/RQ:vj+jsMQMOtEvwDpj5HZYTjipvF24I

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\NEAS.2023-09-05_827cd6179e9a6c20a25141afe0cd39f3_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-05_827cd6179e9a6c20a25141afe0cd39f3_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3916
    • 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:1748

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          66KB

          MD5

          3d109ae3cb0c8ae1f403d3ecdc8d426d

          SHA1

          9e32f3e983f6a10dcf0137d049177eb973e176a1

          SHA256

          341b70c4306a55a6a499208aea9c118b5651a04b5d626d103f7e8703b6c2ea71

          SHA512

          436cb6cccd08528e6f6795a3b2f089ffc1aa3e200a6f37b82c6d4ebe3b4bd06ba9d0cf8fedc79a723f8d854502f9e3990a9be16bc8290b31b94e0a5f8dd47b44

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

          Filesize

          66KB

          MD5

          3d109ae3cb0c8ae1f403d3ecdc8d426d

          SHA1

          9e32f3e983f6a10dcf0137d049177eb973e176a1

          SHA256

          341b70c4306a55a6a499208aea9c118b5651a04b5d626d103f7e8703b6c2ea71

          SHA512

          436cb6cccd08528e6f6795a3b2f089ffc1aa3e200a6f37b82c6d4ebe3b4bd06ba9d0cf8fedc79a723f8d854502f9e3990a9be16bc8290b31b94e0a5f8dd47b44

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

          Filesize

          66KB

          MD5

          3d109ae3cb0c8ae1f403d3ecdc8d426d

          SHA1

          9e32f3e983f6a10dcf0137d049177eb973e176a1

          SHA256

          341b70c4306a55a6a499208aea9c118b5651a04b5d626d103f7e8703b6c2ea71

          SHA512

          436cb6cccd08528e6f6795a3b2f089ffc1aa3e200a6f37b82c6d4ebe3b4bd06ba9d0cf8fedc79a723f8d854502f9e3990a9be16bc8290b31b94e0a5f8dd47b44

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1748-17-0x0000000002100000-0x0000000002106000-memory.dmp

          Filesize

          24KB

        • memory/1748-18-0x00000000020E0000-0x00000000020E6000-memory.dmp

          Filesize

          24KB

        • memory/3916-0-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/3916-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/3916-2-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB