SSD currently has a new storage media technology namely Solid State Drive Non-volatile Memory Express (SSD NVMe). In addition, SSD has a feature called TRIM. The TRIM feature allows the operating system to tell SSDs which blocks are not used. TRIM removes blocks that have been marked for removal by the operating system. However, the TRIM function has a negative effect for the digital forensics specifically related to data recovery. This study aimed to compare the TRIM disable and enable functions to determine the ability of forensics tools and recovery tools to restore digital evidence on the NVMe SSD TRIM function. The operating system used in this study was Windows 10 professional with NTFS file system. Typically, acquisition is conducted by using traditional or static techniques. Therefore, there was a need of a technique to acquire SSD by using the live forensics method without shutting down the running operating system. The live forensics method was applied to acquire SSD NVMe directly to the TRIM disable and enable functions. The tools used for live acquisition and recovery were FTK Imager Portable. The inspection and analysis phases used Sleutkit Autopsy and Belkasoft Evidence Center. This research found that in the recovery process of TRIM disabled and enabled, TRIM disabled could find evidence while maintaining the integrity of evidence. It was indicated by the same hash value of the original file and the recovery file. Conversely, when TRIM is enabled, the files were damaged and could not be recovered. The files were also not identical to the original so the integrity of evidence was not guaranteed.
SSD saat ini memiliki teknologi media penyimpanan yang baru yaitu Solid State Drive Non-volatile Memory Express (SSD NVMe). Selain itu, SSD memiliki fitur bernama TRIM. Fitur TRIM memungkinkan sistem operasi untuk memberitahu SSD terkait block mana saja yang sudah tidak digunakan. TRIM berfungsi menghapus block yang telah ditandai untuk dihapus oleh sistem operasi. Namun fungsi TRIM memiliki efek atau nilai negatif bagi bidang forensik digital khususnya terkait dengan recovery data. Penelitian ini bertujuan untuk melakukan perbandingan fungsi TRIM disable dan enable guna mengetahui kemampuan tools forensics dan tools recovery dalam mengembalikan bukti digital pada SSD NVMe fungsi TRIM. Sistem operasi yang digunakan dalam penelitian ini adalah Windows 10 profesional dengan file system NTFS. Selama ini, teknik akuisisi umumnya digunakan secara tradisional atau static. Oleh karena itu diperlukan teknik untuk mengakuisisi SSD dengan menggunakan metode live forensics tanpa mematikan sistem operasi yang sedang berjalan. Penerapan metode live forensics digunakan untuk mengakuisisi SSD NVMe secara langsung pada fungsi TRIM disable dan enable. Tools yang digunakan untuk live akuisisi dan recovery adalah FTK Imager Portable dan Testdisk. Prosentase recovery TRIM disable menggunakan tool Autopsy dan Testdisk 100% sehingga dapat menemukan barang bukti dan menjaga integritas barang bukti, hal ini dibuktikan dengan nilai hash yang sama pada file asli dan file hasil recovery, Sedangkan tool Belkasoft hanya 3%. Sementara pada TRIM enable menggunakan tool Autopsy, Belkasoft, dan Testdisk 0%, file hasil recovery mengalami kerusakan dan tidak dapat di-recovery.
SSD currently has a new storage media technology namely Solid State Drive Non-volatile Memory Express (SSD NVMe). In addition, SSD has a feature called TRIM. The TRIM feature allows the operating system to tell SSDs which blocks are not used. TRIM removes blocks that have been marked for removal by the operating system. However, the TRIM function has a negative effect for the digital forensics specifically related to data recovery. This study aimed to compare the TRIM disable and enable functions to determine the ability of forensics tools and recovery tools to restore digital evidence on the NVMe SSD TRIM function. The operating system used in this study was Windows 10 professional with NTFS file system. Typically, acquisition is conducted by using traditional or static techniques. Therefore, there was a need of a technique to acquire SSD by using the live forensics method without shutting down the running operating system. The live forensics method was applied to acquire SSD NVMe directly to the TRIM disable and enable functions. The tools used for live acquisition and recovery were FTK Imager Portable. The inspection and analysis phases used Sleutkit Autopsy and Belkasoft Evidence Center. This research found that in the recovery process of TRIM disabled and enabled, TRIM disabled could find evidence while maintaining the integrity of evidence. It was indicated by the same hash value of the original file and the recovery file. Conversely, when TRIM is enabled, the files were damaged and could not be recovered. The files were also not identical to the original so the integrity of evidence was not guaranteed.
Analisis sebuah malware pada perangkat android yang terdapat pada aplikasi iCalender menggunakan teknik analisis static dan teknik komputer forensik. Penelitian ini sangat berguna agar user dapat mengenal aplikasi android lainnya dan menghindari masuknya malware pada mernagkat android milik user. Berbagai tahapan analisis pada aplikasi android dimulai dengan merename apk menjadi zip, kemudian mengkestrak file Zip menjadi format Dex. Filte Dex dikonvert menjadi file Jar menggunakan tool Dex2jar. Selanjutnya hasil file Jar didecomplie dengan tool JD-GUI untuk melihat source code java pada aplikasi iCalender, kemudian dianalisis.
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