Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 05:03

General

  • Target

    2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe

  • Size

    46KB

  • MD5

    79fd5d29068aded2cac5d074908b689e

  • SHA1

    3c0f17244550db3505502f1f841de664a32d85cc

  • SHA256

    3bcb78be2ce626c1d2eea795e3a89e742ee62f0a63a0c498d9029246254bba7d

  • SHA512

    db5ed065675734484bbe9d8917397587ae540b3433f8004bb276a4cfbd40d7a5f1438e4434e607955eecea77e7b9f4f81132834dfbd94931e9dfd0526a3374f9

  • SSDEEP

    768:79inqyNR/QtOOtEvwDpjBKccJVODvy3SpJ:79mqyNhQMOtEvwDpjBzckqSX

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 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\2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1880

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          46KB

          MD5

          c8074876480817526d805309501b197a

          SHA1

          97bca7e916f5f3bc8c6c8c3b5facf80fcd0473fa

          SHA256

          717a142ed9f8e1e7c2baf4811e8f25d5ab53e54686daf6ca434c4640a376ce51

          SHA512

          41e367c42281dcdd04bc6489bd92d25e9d872ac18fe476e382828dc2a74610c18b340948549989c1ddc890c64ebacf90cfb502b1fb3ad84e312a6b98c709f9d1

        • memory/1880-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1880-20-0x0000000002100000-0x0000000002106000-memory.dmp

          Filesize

          24KB

        • memory/1880-26-0x00000000021E0000-0x00000000021E6000-memory.dmp

          Filesize

          24KB

        • memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3044-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3044-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3044-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3044-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB