Analysis

  • max time kernel
    94s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 00:23

General

  • Target

    2024-05-31_012d5c0006c68c67825157d9de2bd742_cryptolocker.exe

  • Size

    38KB

  • MD5

    012d5c0006c68c67825157d9de2bd742

  • SHA1

    97bafdc86f526ef1978d7fd25076e8f07c835ced

  • SHA256

    b48dae5cc6d8c949b83cc9c2f04b9a2ce9d8dddb35bd2f93832a60c2c0432b4d

  • SHA512

    f8a082d84af92bb0c26d5277d2a87170b4d82400bca9efbf9e7bf2622feea2b87ec381f2a65c40dddda20aef14c3a2cde88b0f38acdb9ecd64e80ff1d38edd20

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4KgMb:fT+hsMQMOtEvwDpjoIHq

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_012d5c0006c68c67825157d9de2bd742_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_012d5c0006c68c67825157d9de2bd742_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2560
    • 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:4956

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          38KB

          MD5

          540745d6d450d6cae037704338533f13

          SHA1

          a78a4268a7daaecace8b5b16d11b418fa860aaa6

          SHA256

          2febd2a7b9fc522f6b99e3640eda8296eab444c97d50824b3a415b9deeab38b5

          SHA512

          1c087f4d336216f19f238b960a454f42672b4f8fab2462423656e0ce4e3367201c8aff87b814a61cfd75c98f2542bf875a350df801538bfde31e515ad4e31f8d

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2560-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/2560-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/2560-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4956-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4956-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB