Analysis

  • max time kernel
    82s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2024, 15:30

General

  • Target

    2024-01-27_72744de8301b27e2bad86de4195527b5_cryptolocker.exe

  • Size

    52KB

  • MD5

    72744de8301b27e2bad86de4195527b5

  • SHA1

    8579149a4adce9003d0841f8d1de02f13c3bf91f

  • SHA256

    a12c44dd33721e10f82793f8e24ce4e6f100263db85962dddd029088d6f1cfc3

  • SHA512

    ee1ffa43a8dfed3c636784fa6950904327631610f6f583f802db171e924b3a3c2c3b24f1cbf868f26631853885e9fa3daea77619ffc02867405ceaa9b3386644

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7+:6j+1NMOtEvwDpjr8oxE8

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-01-27_72744de8301b27e2bad86de4195527b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_72744de8301b27e2bad86de4195527b5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3724
    • 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:1064

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    c2b5863d727216e14aefa58e965eb86f

    SHA1

    ba12b7438006379bfeb6081678f6ae2933b77255

    SHA256

    b1eb5a2972e94a5125a28834bdcee4aac9baa65ad756adc2f135feacfa258f70

    SHA512

    8e83775def6a2adbff20932fa9cf5a1e2c82d467d634880c52fbef37ed797bbd490ae14ed6c75c732423679f055a9ff9cfe9d9da51f8c9d0a82863c38b945c18

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1064-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1064-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1064-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3724-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3724-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3724-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3724-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3724-25-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB