Analysis

  • max time kernel
    94s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/06/2024, 00:27

General

  • Target

    2024-06-30_6e660a3dc85330bc61013db92fecfba8_cryptolocker.exe

  • Size

    79KB

  • MD5

    6e660a3dc85330bc61013db92fecfba8

  • SHA1

    4fab28cf5702f9ff796a313b4c7028c70689cea5

  • SHA256

    f8d10a7c8f979f1b3bbc1afb78e380143214d7d91288a7254b3f5efe267a4a3a

  • SHA512

    3a5938804c8f9e021fb26829e41f8615edb5bf1d0dd506ac4defc606fbc1c13670eccf3480e441a82ded8c768ca69fbc930b2f5a20040930107a94b29ffed154

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KUJ8:ZVxkGOtEvwDpjca18

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\2024-06-30_6e660a3dc85330bc61013db92fecfba8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-30_6e660a3dc85330bc61013db92fecfba8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2468
    • 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:1172

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    79KB

    MD5

    9e7cc17b09698253d5978ece47e93549

    SHA1

    bc42d85b0770de74f287d0985d26e58bc541b35f

    SHA256

    93ca9b83f83e4eb9e764cd2eb1ea88b336bd2aa91385ed777df7b600bc559c26

    SHA512

    1c0cb1dd4c9bf4868afc6e1fad94e9fed6b4962ad538c0d729dc91985de3fbcd595a5e15ff8b4bcda5f56f71bd012dfecdf50d2c34df72acb70cf91fc9af9e94

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1172-25-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/1172-19-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2468-0-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/2468-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2468-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2468-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2468-17-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB