| Presentation | 2013-11-12 An OEP Identifying Method based on the Order of Opcodes Noriaki NAKAMURA, Masakatu MORII, Ryoichi ISAWA, Daisuke INOUE, Koji NAKAO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To skip unpacking steps, automated generic unpacking methods are strongly required. Most of generic unpackers extract memory areas where data was written and then executed, and decide original entry point. However, some packers repeat writing and executing data on the memory, so that there are multiple candidates of the original entry point. In this paper, we propose a detection method that decides right candidate by using the order of opcodes. Compared with malwares which have many functions, packers simply decode. Therefore we build a hypothesis that the order of opcodes have difference between original codes and packer's codes. We specify the section of original codes by machine learning, and decide original entry point by detecting first execution of the section. For machine learning, we use k-Nearest Neighbor Algorithm, and Longest Common Subsequence of extracted opcodes from each section. The experiment with 5-fold cross validation results in detecting 97.29% original entry point for 35 packers out of 48. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Malware analysis / Packer / Opcode / OEP |
| Paper # | ICSS2013-59 |
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| Conference Information | |
| Committee | ICSS |
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| Conference Date | 2013/11/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information and Communication System Security (ICSS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An OEP Identifying Method based on the Order of Opcodes |
| Sub Title (in English) | |
| Keyword(1) | Malware analysis |
| Keyword(2) | Packer |
| Keyword(3) | Opcode |
| Keyword(4) | OEP |
| 1st Author's Name | Noriaki NAKAMURA |
| 1st Author's Affiliation | Graduate School of Engineering, Kobe University() |
| 2nd Author's Name | Masakatu MORII |
| 2nd Author's Affiliation | Graduate School of Engineering, Kobe University |
| 3rd Author's Name | Ryoichi ISAWA |
| 3rd Author's Affiliation | NICT |
| 4th Author's Name | Daisuke INOUE |
| 4th Author's Affiliation | NICT |
| 5th Author's Name | Koji NAKAO |
| 5th Author's Affiliation | NICT |
| Date | 2013-11-12 |
| Paper # | ICSS2013-59 |
| Volume (vol) | vol.113 |
| Number (no) | 288 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |