Analysis

  • max time kernel
    144s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/01/2024, 16:25

General

  • Target

    2024-01-23_449e7444729429c60074af2b5131019b_cryptolocker.exe

  • Size

    98KB

  • MD5

    449e7444729429c60074af2b5131019b

  • SHA1

    e407a12321e42e4d068a69f2c930a4b2fdadbf5f

  • SHA256

    9f7ecb08285ac87e06506ba7983b27942121e8e3916bc117da7f2b0e6be4ddbf

  • SHA512

    7537b2dd186588d1fa72ef1049faf9e2134dd8c72c3ccb60252c05b91cfe99d52ee6fc821d0ec093d0c85517048dc9f0b93e0898a5c97ce2b96a26820aa83411

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjz/6n:i5nkFGMOtEvwDpjNbwQEIikrw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-01-23_449e7444729429c60074af2b5131019b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-23_449e7444729429c60074af2b5131019b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4532
    • 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:5084

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          98KB

          MD5

          9ff78d031d78a4d5da2416493ec86d5b

          SHA1

          4df104b8cd6b85eaca8b84683960e9ce68f67239

          SHA256

          11f77267cfdcec1b2340c55f8e6fdc6e76ae910d833a915136c837b4ce209613

          SHA512

          0b1b18d5eaf49859f58462aef810faf7010e5aebd01ee05b466fd0157888a17e761609ab16a5f4b341d4cbfd1aa94b9ab60f0fd32a1663938058bcda6266b8e2

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4532-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4532-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/4532-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/4532-3-0x0000000002230000-0x0000000002236000-memory.dmp

          Filesize

          24KB

        • memory/4532-10-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/5084-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/5084-21-0x00000000007D0000-0x00000000007D6000-memory.dmp

          Filesize

          24KB

        • memory/5084-50-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB