Analysis

  • max time kernel
    140s
  • max time network
    146s
  • 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, 18:20

General

  • Target

    NEAS.2023-09-05_91eb3be65a6025f554eee072746b2c5f_cryptolocker_JC.exe

  • Size

    122KB

  • MD5

    91eb3be65a6025f554eee072746b2c5f

  • SHA1

    11aaf30aaf18c6b4c8df1a03d93d30efa627cda5

  • SHA256

    3c3d673e9187c7eb9f103ac37fd130fca66293e9151a21510a1e269f7c38f7a6

  • SHA512

    6249653d58ed62e5b45fd84a3245351997c253892d6688b7de235bcf599315e472cea686750c7e1f0bcb55dc57d3b581ca2bca972bb16fafcbf1d2c9ae7c3109

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//L:vCjsIOtEvwDpj5H9YvQd2RF

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_91eb3be65a6025f554eee072746b2c5f_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-05_91eb3be65a6025f554eee072746b2c5f_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1160
    • 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:3520

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          122KB

          MD5

          a18e8a05933ca4a31be0104d1d96d6c8

          SHA1

          39736eec978062d17295513cfe108bc2f68a6ffb

          SHA256

          fa3ef4636f805ddb497e12eb1fd5c5d90f3e44d760908e6a30141b3335008dab

          SHA512

          6d7985e6f06bce65ab0f515326678ad2a7467629aa81c463caa67df3774af618b9547f5936cf61213d2eb6dda25c69ee65bd46e43fd8f1f0767edded46d681eb

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

          Filesize

          122KB

          MD5

          a18e8a05933ca4a31be0104d1d96d6c8

          SHA1

          39736eec978062d17295513cfe108bc2f68a6ffb

          SHA256

          fa3ef4636f805ddb497e12eb1fd5c5d90f3e44d760908e6a30141b3335008dab

          SHA512

          6d7985e6f06bce65ab0f515326678ad2a7467629aa81c463caa67df3774af618b9547f5936cf61213d2eb6dda25c69ee65bd46e43fd8f1f0767edded46d681eb

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

          Filesize

          122KB

          MD5

          a18e8a05933ca4a31be0104d1d96d6c8

          SHA1

          39736eec978062d17295513cfe108bc2f68a6ffb

          SHA256

          fa3ef4636f805ddb497e12eb1fd5c5d90f3e44d760908e6a30141b3335008dab

          SHA512

          6d7985e6f06bce65ab0f515326678ad2a7467629aa81c463caa67df3774af618b9547f5936cf61213d2eb6dda25c69ee65bd46e43fd8f1f0767edded46d681eb

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1160-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/1160-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/1160-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

          Filesize

          24KB

        • memory/3520-18-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/3520-17-0x0000000000650000-0x0000000000656000-memory.dmp

          Filesize

          24KB