Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/04/2024, 23:37

General

  • Target

    2024-04-04_95b7d6b9460a72aeef3728f16ebbf458_cryptolocker.exe

  • Size

    128KB

  • MD5

    95b7d6b9460a72aeef3728f16ebbf458

  • SHA1

    43a6b02a454d4161052ecb7a403444bdafb267db

  • SHA256

    3d044318cf68426438da1125566bf20df9b60920206686d5e310773aa825f413

  • SHA512

    d4ff018bcd576103a3fd72ac0856ac986c38a439d05dad770c78f3a8cb5922c5f8b1d3e57b7b1f12047651a09354466b14be567b85eb1995dbcc582ce17ee87f

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//LIT4N:vCjsIOtEvwDpj5H9YvQd2Rh

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-04_95b7d6b9460a72aeef3728f16ebbf458_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-04_95b7d6b9460a72aeef3728f16ebbf458_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2296
    • 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:2824

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          128KB

          MD5

          5e5e06ac824e4124f8c8df724278aa15

          SHA1

          07466f7387471e201b7ab54c40891e29c6c45c18

          SHA256

          3f7bad592e5017a72b3a0e417323b5ba86b369ea7c9f37a84301034d7a4e0256

          SHA512

          99f6a85d55b55a15b99225d767160077efaf0beda4e4b3b4313160baca493f499703947aba260a5b6234a0f14d94df94d1cf618dfbd9f5479694ee54c27e17d4

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2296-0-0x00000000007C0000-0x00000000007C6000-memory.dmp

          Filesize

          24KB

        • memory/2296-1-0x00000000007C0000-0x00000000007C6000-memory.dmp

          Filesize

          24KB

        • memory/2296-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

          Filesize

          24KB

        • memory/2824-17-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB

        • memory/2824-19-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB