Analysis

  • max time kernel
    77s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/10/2024, 06:39

General

  • Target

    2024-10-01_91c8afa91ec48f00e2e7cb11e40e19aa_cryptolocker.exe

  • Size

    64KB

  • MD5

    91c8afa91ec48f00e2e7cb11e40e19aa

  • SHA1

    64d841adcbeb61a208df26e94832b13d3702bdd5

  • SHA256

    bb9e65b7080b61cd69952ec573a54fbe4508f5e0a3c5c2d4c262912598476696

  • SHA512

    fe13c6a148d5f2cd191dc87b779524f7d66ba2171968b703ad9f950214e90331aeac9e190d2bbb1e3b8dcbff615bf82e42e82b806ddedf6c4fd517e16d4da0fb

  • SSDEEP

    768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zK:0j+soPSMOtEvwDpjwizbR9XwzK

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
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-01_91c8afa91ec48f00e2e7cb11e40e19aa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-01_91c8afa91ec48f00e2e7cb11e40e19aa_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3744
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:2036

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          64KB

          MD5

          11a5f1ae1d6e14ff8a60d8814d222938

          SHA1

          c73160837cdc4a0d6660f23a5360e3fb40df5806

          SHA256

          d69d88b26675efa6cff7879885e1d66377c68b5fe4f8e4d5fb449453a95ac24c

          SHA512

          1d5b8114ee07a7372a160d7dbfb6b2cd4904d2b53532d6607927e550f040b80603256e7ff508798f7e57267d61becc320e4359405285e74e5faad6988180f7e8

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2036-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/2036-20-0x0000000002000000-0x0000000002006000-memory.dmp

          Filesize

          24KB

        • memory/2036-48-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3744-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3744-1-0x0000000002210000-0x0000000002216000-memory.dmp

          Filesize

          24KB

        • memory/3744-2-0x0000000002210000-0x0000000002216000-memory.dmp

          Filesize

          24KB

        • memory/3744-3-0x0000000002230000-0x0000000002236000-memory.dmp

          Filesize

          24KB

        • memory/3744-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB