Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-01-2024 00:22

General

  • Target

    2024-01-28_05a6a2244422cc0a5ada9e1bdcbfd4b4_cryptolocker.exe

  • Size

    75KB

  • MD5

    05a6a2244422cc0a5ada9e1bdcbfd4b4

  • SHA1

    b5b1c7d6b80ec119a4cd2435983deb7c4e63eb1f

  • SHA256

    2aa0f584f3c641f6219bb7db47792910e03e35a8a0a91409025bad1554aaab44

  • SHA512

    100906f72c96efda52a0802a9170286642159ffebf15bf2f948547e7b19f983d685f05a729112d1a9a16965cf7d63ca9a0c03722352e5a5a4d72b1ba67a4df34

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KuA5f:ZVxkGOtEvwDpjcaY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-01-28_05a6a2244422cc0a5ada9e1bdcbfd4b4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-28_05a6a2244422cc0a5ada9e1bdcbfd4b4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3200
    • 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:3792

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    75KB

    MD5

    92973c1492f7ed93edfe3c662ec6e2bd

    SHA1

    55d44e77d26a81e63f05b0b27aeee8982f3f49a1

    SHA256

    4bb625d17affb9b2830d34129a20cd5250a88d939b3c596cfa2ae31f2eabab24

    SHA512

    fa776c8ade71577db964437ef9f13f82648e58289c7e3f90f45cf4e9401e99cbda55aa506183307ca7206d1e776ced1a3caf52919042bca6b4e7274d24dae0f6

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3200-0-0x00FFFFFF00FFFFFF-0x00FFFFFF00FFFFFF-memory.dmp

  • memory/3200-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/3200-2-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/3200-3-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/3792-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3792-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3792-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3792-48-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB