Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/05/2024, 03:50

General

  • Target

    2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe

  • Size

    44KB

  • MD5

    acb5f9593fcbd0f21f2215510aead60e

  • SHA1

    6876dea9006e689cf85edbcf6e15366178d60c68

  • SHA256

    352735d3a0c69ef97f9d6f58f81db95c0ce112b1f008d01e4e7ae063bc35f2a6

  • SHA512

    574971b211a42d78551a302290d89db32324c75cedcbdb17dc353e457e92db5dbe46cbf581ced577cd09a00b6278b68588832792e7ceed3ed31291bba32a5470

  • SSDEEP

    384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIk:bm74zYcgT/Ekn0ryfjY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:2416

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          44KB

          MD5

          e681514b47dacff2c328674ec5afdd36

          SHA1

          9ed4acdea0a9bfb1d363298ca16e52a550edd060

          SHA256

          479d78e41422c92adb94c6b482ab4109c80da31fb3e4839dbf74e82c03da6b55

          SHA512

          1adf09eb5dc56f6c0ea6cce616e0846dbabcbe07441ad1ebee45ac9f342ba2c4852bb63cdb291a1456b21f7bcf0427512b0e1179675995aa9d0c1d7506aa02f4

        • memory/1288-0-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/1288-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/1288-2-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/1288-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/1288-17-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/2416-19-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

          Filesize

          24KB

        • memory/2416-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

          Filesize

          24KB

        • memory/2416-26-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB