Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    11/06/2024, 01:11

General

  • Target

    2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe

  • Size

    41KB

  • MD5

    a16e6ad99f81f5aa87ce0a438160f661

  • SHA1

    1dc01d9b0a8f47986b40c9c9dc9c866d62b50a37

  • SHA256

    c8a5d40b1a9548080cb7b746f234ccb4bc0d2407b50705d0437794bcf4d37d0d

  • SHA512

    48c6a80f75c35d6d68cd401148e32fd966bca92d747c096a4629ea4f25ff01f5be317c3f684fbb63df4cb3a13eefdd71f4f7ce0d15cae3b71e3db381ecefa708

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYZ:qDdFJy3QMOtEvwDpjjWMl7Tc

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2412
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2724

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Users\Admin\AppData\Local\Temp\asih.exe

          Filesize

          41KB

          MD5

          7c6832172360a2c9dd7492cecefd6fc1

          SHA1

          4c9bdbee035d9748d681556466b91cb6f99a4924

          SHA256

          0780d1f725fbc1b6d11380caa9c71f326366fd96955423eb0faf2a3b142ea1e0

          SHA512

          cc5905d93e48983765d341bd58f436c7b384836b1c396fb46d1102eb64b0bbce6e134ecdccd9bcc623158ae8cb6e290da3f0e058c51d7a92d06ad10a41341831

        • memory/2412-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2412-1-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2412-9-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2412-2-0x0000000000480000-0x0000000000486000-memory.dmp

          Filesize

          24KB

        • memory/2412-16-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2724-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2724-19-0x0000000000310000-0x0000000000316000-memory.dmp

          Filesize

          24KB

        • memory/2724-26-0x00000000002D0000-0x00000000002D6000-memory.dmp

          Filesize

          24KB

        • memory/2724-27-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB