Analysis

  • max time kernel
    132s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-05-2024 03:45

General

  • Target

    2024-05-08_ff321fad115766d8ac5a7f873ae02da9_cryptolocker.exe

  • Size

    53KB

  • MD5

    ff321fad115766d8ac5a7f873ae02da9

  • SHA1

    aba34c31672ff51e81a702a196e6bfdeb8966446

  • SHA256

    71270f9cd20a9809f1f1c6d06424734bea9d9a599705ab3845719ce57171c192

  • SHA512

    4068943338d0cf347fb71e9f26ffd4e7ffaec3c76a953a6f3ad5d4b356596620744846fbcfd21648228a678bf9bb8df8df45c81694f21b32b8aa7383f997fd61

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5KG:ZVxkGOtEvwDpjcV

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-08_ff321fad115766d8ac5a7f873ae02da9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-08_ff321fad115766d8ac5a7f873ae02da9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3528
    • 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:1540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    54KB

    MD5

    cdb48a02924c03676ab585f33111e3d1

    SHA1

    66ccc184c69856188b4e0503ae7f0d35b574a65a

    SHA256

    9426ad2267a8231be4ce5d3fe372bc232e584eee867a71a757cee1dcad585f9d

    SHA512

    49a2806340795a46d52012d7ac31ba5871e0cc9b7da0d7a500fa2bd3a09dbcadea85a2bf6f42b941726705671e8bb6b92bd61c11e75802d0db9a4b806d2c060b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1540-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1540-19-0x0000000000870000-0x0000000000876000-memory.dmp

    Filesize

    24KB

  • memory/1540-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1540-48-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3528-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/3528-1-0x00000000004E0000-0x00000000004F0000-memory.dmp

    Filesize

    64KB

  • memory/3528-2-0x00000000007C0000-0x00000000007C6000-memory.dmp

    Filesize

    24KB

  • memory/3528-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB