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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/05/2024, 04:34

General

  • Target

    2024-05-24_827ae8032c19bf90c50c65a1d0e185a7_cryptolocker.exe

  • Size

    55KB

  • MD5

    827ae8032c19bf90c50c65a1d0e185a7

  • SHA1

    7c94ca316e9306c9392a2bcd07429ccbca3337aa

  • SHA256

    074fd9e989e210d7eeee80bf9340f1120a4c732aef05d605d69c60b0de823506

  • SHA512

    ad70d1f5127ec240accefa68cc5bdc6073faf6ba388a448d30441209d6d8cd71e3800877eb3c362b6a0a093852454fbc04d9658e22cfb476fc5a9d9ef3ff29c0

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5UjO:ZVxkGOtEvwDpjcT

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-24_827ae8032c19bf90c50c65a1d0e185a7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_827ae8032c19bf90c50c65a1d0e185a7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4496
    • 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:4580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    55KB

    MD5

    36e963f192d3889facc62cce85860175

    SHA1

    6e40130ff1d4bb5facee1510cdc999493a4d5bdd

    SHA256

    b34a8c63dbfb251568d2c88ae9ab0e6fdceeb93e97fc88f6d438c196240a1d10

    SHA512

    15a6efb77dfca3260fa7c1593eecb53fd621380812f4a91d12b3f0235a24afd4129960b0b07b0e41acf792c32f3d23c8d4e3c2d1d5fc92d59f895d3e1416267c

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4496-0-0x00000000004E0000-0x00000000004F0000-memory.dmp

    Filesize

    64KB

  • memory/4496-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4496-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4496-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4580-17-0x00000000004E0000-0x00000000004F0000-memory.dmp

    Filesize

    64KB

  • memory/4580-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB