Research Article
Evaluating Grayware Characteristics and Risks
Table 6
File compression types by grayware in encyclopedia of Trend Micro.
| ID | Compression | Description |
| 1 | Aspack | A Win32 executable compressor capable of reducing file size and resisting reverse engineering | 2 | FSG | A file compressor especially suitable for small EXE or ASM files. | 3 | PECompact | A compressor for code, data, and import/export table with proprietary compression algorithm. | 4 | Petite | A utility to compress and encrypt files, automatically expand files in memory when execution. | 5 | SFX | The Self extractor (SFX) compresses a file and transports it to a remote system where decompression is performed. | 6 | UPX | Ultimate Packer for eXecutables is an open-source packer performing in-place decompression. | 7 | Upack | Upack is a file packer based on LZMA compression. | 8 | Other | There are many other file compression packages such as Neolite, Nullsoft, PEPack, or RAR. |
|
|