Analysis

  • max time kernel
    129s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 00:36

General

  • Target

    2024-05-23_53fd5ee86c6076dfb56943247ad0e8a6_cryptolocker.exe

  • Size

    78KB

  • MD5

    53fd5ee86c6076dfb56943247ad0e8a6

  • SHA1

    78c921965c35a43f17c734d1200b912523eff1ce

  • SHA256

    2e43a54895712aec60db71d5f6feb7cc70991db563086230884932750a58d60b

  • SHA512

    560172c1ac2f906ab12a89123e2bcf8c00249aa7af51cbb825f8a82a58ded357be60b443f6e48e4002ac6d033b30d38f3a88204b036c91792422eb7ea103ed0b

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIufR:vCjsIOtEvwDpj5H9YvQd21

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\2024-05-23_53fd5ee86c6076dfb56943247ad0e8a6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_53fd5ee86c6076dfb56943247ad0e8a6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4780
    • 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:2196

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    7166e6d0f1c0589e6973cfe941fbe641

    SHA1

    0160f9c38b2e43ed1f697386934b6a62c31c205d

    SHA256

    eccc5c45c60ff0c17fb938b8121044bc4218b55cc54006800d7d6c8c4e0bab83

    SHA512

    6acdc0c558d9f0c8604c4551a0a2cd686537fead1adbfab709d9614dc643cbe447550dc6a5d34b123eadd29ea56ca2a10690aaa61394a3bd4494beefbb2af84c

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2196-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/2196-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4780-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4780-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4780-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB