Analysis

  • max time kernel
    92s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/06/2024, 11:33

General

  • Target

    2024-06-15_b867d867f076e93a490e3b8bdceebd0e_cryptolocker.exe

  • Size

    39KB

  • MD5

    b867d867f076e93a490e3b8bdceebd0e

  • SHA1

    f5944c45d45766e7364d0793a31b0bacc65edce4

  • SHA256

    f71d9357c927836d0226f23d518bd86924f36169074abc2f317253eb3df7a402

  • SHA512

    9b0ca582c47e5fb0373a0ad2777dcf0ebddb8eb3f1ddc769d660423b0211f35c4ae6e6a70ba6f96e8142886c2aa4f123dc0a6315c4c5a154fa61ed3e15d3b8b3

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4qc:fT+hsMQMOtEvwDpjoIHL

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-06-15_b867d867f076e93a490e3b8bdceebd0e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-15_b867d867f076e93a490e3b8bdceebd0e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4328
    • 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:3836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    afbd0bd2fc2d121266a18299b6dc2d6e

    SHA1

    4ed1f6af13d168f20daad637810c05feb47ed932

    SHA256

    7b8a6ee90268039769c1f3056fef9c3686254a0b3a1cf2e01683559ab7adf21b

    SHA512

    25d4083ac5b0deeac9080f1d410e9fcaf9a5896dbb4c5c070e65fe49f1430d686712a81185a84ca3f1e49999fb80a809042a03a0303c253d1b5dbccf33a1c4ff

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3836-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3836-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4328-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4328-1-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4328-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB