Analysis

  • max time kernel
    88s
  • max time network
    146s
  • 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, 07:22

General

  • Target

    2024-01-27_0cb8ebd1eb7399f6b84922baf0322765_cryptolocker.exe

  • Size

    62KB

  • MD5

    0cb8ebd1eb7399f6b84922baf0322765

  • SHA1

    e880be8f6460795a326e8aa1aaa3eb4dc7eeb5f2

  • SHA256

    96f856f4f92cded43f8d27003b39816bdfe9281254d4296a5e85d1a26ebdc42f

  • SHA512

    48478a2d21974f13038b1081fa38f01060c174efa4bf563098f6c92238ad20570ec58510c300b51058be8a47be4ae4e3ea78b467074e81f47bba70b5ceecedb6

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEO10Km2:6j+1NMOtEvwDpjr8ox8UDEy0Km2

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_0cb8ebd1eb7399f6b84922baf0322765_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_0cb8ebd1eb7399f6b84922baf0322765_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4384
    • 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:4076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    501ae87929f6776ad36c751ac68d1abf

    SHA1

    ae4adabc268fd001ae16679b77711ec23df50c88

    SHA256

    8d17135200347472e2808dc48b1d44c5aeb9a6a6dbc22e28586b4e1ea19fcb92

    SHA512

    10c35ebe1aa558e4922886ef29682d360e3afd3a9f5e3682530234d14e0c7d228ddab8b46bd464177d9fd2900ed46f708295b574b0a973291beb459ce03136e2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4076-25-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/4076-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4384-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4384-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4384-2-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4384-3-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/4384-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB