Analysis

  • max time kernel
    93s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 09:53

General

  • Target

    2024-05-27_d77cd49a1fadca8dcbd3f6879de369b5_cryptolocker.exe

  • Size

    51KB

  • MD5

    d77cd49a1fadca8dcbd3f6879de369b5

  • SHA1

    335be8072fa38da327b491698b8c7ae263fc1e8d

  • SHA256

    225b4478189edc1c190d75e037406ad81ef5be38704064b9ec4df26964352b05

  • SHA512

    3cb2ef8f302641d04c584289c07dcfe288b274b3a9f29bb30d35abf02a4a0f4bb54646d3619ee56db75bc1f467601d4bf83b49dc39d2409af22f93322bb9379d

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ15x8GS:ZVxkGOtEvwDpjcv

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-27_d77cd49a1fadca8dcbd3f6879de369b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_d77cd49a1fadca8dcbd3f6879de369b5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2664
    • 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:4588

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          51KB

          MD5

          15b988c104c8af18859a29ba0a6b9c58

          SHA1

          7c95b32fc7939b5f3c2dc9e86c9d77cca38f9a57

          SHA256

          ccabd6be449fbaa038fc485f45bab9869b85a7f7d36cf08ce45ddecf60f6dbd7

          SHA512

          f8a2c538852c871b274fa1291f224f8859f7ca1c99afd83dff98e742f067e1084823475bf80f564fbfc063463d65cfd8553db555e5a19d121b37196241850b81

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2664-0-0x0000000000410000-0x0000000000413000-memory.dmp

          Filesize

          12KB

        • memory/2664-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2664-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2664-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2664-16-0x0000000000410000-0x0000000000413000-memory.dmp

          Filesize

          12KB

        • memory/4588-19-0x0000000000690000-0x0000000000696000-memory.dmp

          Filesize

          24KB

        • memory/4588-25-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB