Analysis

  • max time kernel
    134s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 20:03

General

  • Target

    2024-06-01_6466199aa660d4f1d5bb1960ac8c6656_cryptolocker.exe

  • Size

    87KB

  • MD5

    6466199aa660d4f1d5bb1960ac8c6656

  • SHA1

    fad5a8b0200c13aaed1e0f4df7902dc87232f80e

  • SHA256

    533c74ff4c94cbc7b10216d4140798b0bfe6e9599fd48b92058caa163992880c

  • SHA512

    da41d0c6597e5e33af1ad291210107a511175242f8e9954cdfb5658c8b5d05a296e8b21670fb93bacae0b4f7c6343257874f16028f5a218c4d65fe5ae7d35c94

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBULY1:vCjsIOtEvwDpj5H9YvQd2l

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-01_6466199aa660d4f1d5bb1960ac8c6656_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_6466199aa660d4f1d5bb1960ac8c6656_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3420
    • 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:2544

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          87KB

          MD5

          c95a90687ef652e779e7dda49fbed9f3

          SHA1

          3e5e07241197fce05aaf346aaa688a10a0f603e6

          SHA256

          6cdde46075c3cca27f41f2d202f39f6be22f245c156503205677ead10a4527d4

          SHA512

          8f25b85f567efbad3e4a4884c58356d5c05a1ee16fdc8212264c10f076d7c14a25fd87c62e3df70b63117ec26442a3888d5f3c14b4a4fa901d4920894f1cf2f9

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3420-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3420-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3420-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB