Analysis

  • max time kernel
    92s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-06-2024 17:53

General

  • Target

    2024-06-04_2af240e747678040301ab37a407eafc9_cryptolocker.exe

  • Size

    43KB

  • MD5

    2af240e747678040301ab37a407eafc9

  • SHA1

    f424604d23361ca28b6e26325208b14b509d81e0

  • SHA256

    72fa3b6f155081da8e150e3c3196be8374b4e794df0af22a6654dba7c67f1763

  • SHA512

    f308dbf605f9d14643b909e4c46a4aa78acfa1a0794fab4128bf0e9693413356c5945e77d3458ba84dc966483f5d3c9cd815088deb5c76a0313e31af2406e1fe

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtXabM0I:6j+1NMOtEvwDpjrR2XabMD

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-06-04_2af240e747678040301ab37a407eafc9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-04_2af240e747678040301ab37a407eafc9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4172
    • 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:2816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    44KB

    MD5

    21b70623fd73d0f672114d7f54015713

    SHA1

    ebd69682cccfb781016b8014bf47927bb4ccc4fe

    SHA256

    7ec658c83f1aa9d96bf8bd0fb3fcc58f17ba6f60239390c7fb828837b0210d37

    SHA512

    d8c3e2cea01801c43eeca66f61a3c91621c05d2f718e1f8c98816c50dca36d8f3bf266be637e10a86c9c4a65b8f86b18c729f597f1e7af1d7a05f2a8e8d8877f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2816-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2816-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2816-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2816-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4172-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4172-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4172-2-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4172-9-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4172-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB