Analysis

  • max time kernel
    132s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 14:25

General

  • Target

    2024-05-12_03d58be770a4b21b6457f693a24b414d_cryptolocker.exe

  • Size

    41KB

  • MD5

    03d58be770a4b21b6457f693a24b414d

  • SHA1

    c593802b51ff98b73da81e382cb30ae42c3f9110

  • SHA256

    1e698a95c0fe85f8317a224bf10b0838ea61fc03d027b8780264a5b90a0f352e

  • SHA512

    dbac6a4ace195d82248028b6bbcd373adc04bce60869d44e86fed524209197a2448e3911f91c3690ce295453c0ec8991580255b7a16e128a360c9141b3109f09

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhb:i5nkFGMOtEvwDpjR+viHshNd

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-12_03d58be770a4b21b6457f693a24b414d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_03d58be770a4b21b6457f693a24b414d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3436
    • 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:4360

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          42KB

          MD5

          d2072294a0e2a27838525d68bc979b35

          SHA1

          98fd4909cde89e852ec2d60abd3bb29725ad26db

          SHA256

          0a96984af5a84204c3456da6827dc02a11ae8057b6d237ba437b01bd3f491044

          SHA512

          33102f3e996f36beb10cfa02c922ccea93bc613db93554c689e0255fdac27397bdb401a55e23e4c3c71b9b6809aec29afc80d2253755c5bd99c84fb8cf33f988

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3436-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3436-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

          Filesize

          24KB

        • memory/3436-2-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/3436-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

          Filesize

          24KB

        • memory/3436-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4360-19-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4360-21-0x00000000005D0000-0x00000000005D6000-memory.dmp

          Filesize

          24KB

        • memory/4360-27-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/4360-50-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB