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Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/02/2024, 07:49

General

  • Target

    2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe

  • Size

    97KB

  • MD5

    78917d0a526ff965045806dcb654f642

  • SHA1

    faf64f2bcba5a7782d6af7cd2396200838886c04

  • SHA256

    30d5344b1504183884046b7471cef93d479c98ef4f0b0e0af59a41ee627d1126

  • SHA512

    39a42041e0b205247cd13dbfc11ba9a9ae2facde1c5e0a51852431c73d4bbfcfd54937efaa9cbf3172276eb0b8680ad35cd2750d2d8e6232c6bc53ca3a6816cd

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvfT302U:xj+VGMOtEvwDpjubwQEIiVmkf0Z

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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4852
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    97KB

    MD5

    796fdd673a8273110bb4e02b78da3dd1

    SHA1

    aa628ec0bbcebbee8293ffce757a2cccc5df8e4c

    SHA256

    73c2c1de0e72188e9072c85a00506cc19e9654ef4d9e44bc2b2547f511bc255a

    SHA512

    7ad3f6ac2645f5461a1361f81c4fe35d9e650ce324533b18d1fc7398bfdab7231b3a76209cbdaeca1693c224253156d2962142b28288b6f8e3f5460bfdd9553e

  • memory/3040-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3040-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3040-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3040-53-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4852-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4852-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4852-3-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4852-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB