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master's thesis
Kriptografska pozadina i implementacija ransomwarea
2021. urn:nbn:hr:179:380934
Kuliš, Ivan
University of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
Department of Electronics and Computing

Cite this document

Kuliš, I. (2021). Kriptografska pozadina i implementacija ransomwarea (Master's thesis). Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:179:380934

Kuliš, Ivan. "Kriptografska pozadina i implementacija ransomwarea." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:380934

Kuliš, Ivan. "Kriptografska pozadina i implementacija ransomwarea." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:380934

Kuliš, I. (2021). 'Kriptografska pozadina i implementacija ransomwarea', Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, accessed 24 October 2024, https://urn.nsk.hr/urn:nbn:hr:179:380934

Kuliš I. Kriptografska pozadina i implementacija ransomwarea [Master's thesis]. Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture; 2021 [cited 2024 October 24] Available at: https://urn.nsk.hr/urn:nbn:hr:179:380934

I. Kuliš, "Kriptografska pozadina i implementacija ransomwarea", Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:179:380934

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Metadata
TitleKriptografska pozadina i implementacija ransomwarea
Title (english)Ransomware: cryptographic background and implementation
AuthorIvan Kuliš
MentorMario Čagalj (mentor)
GranterUniversity of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
(Department of Electronics and Computing)
Split
Defense date and country2021-07-16, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Computing
Abstract
Rad obrađuje problematiku zloćudnog softvera. Također, stavlja ransomware u kontekst s drugim vrstama zloćudnog softvera i opisuje njegovu klasifikaciju. Rad nudi i pregled različitih vrsta zloćudnog softvera i načina njihovog djelovanja, širenja te na kraju suzbijanja. Rad također objašnjava rad svih kriptografskih enkripcijskih algoritama, počevši od AES-a pa preko RSA do ECC algoritama. U drugom dijelu rada dana je detaljna implementacija ransomware softvera. Ransomware je implementiran u sve tri korištene varijante. Jezik implementacije je Go. Web-server implementiran je u NextJS-u. U zadnjem dijelu rada opisani su mehanizmi antivirsunog softvera u borbi protiv zloćudnih programa i ransomwarea specifično. Također, objašnjeni su i mehanizmi koje koriste virusi za izbjegavanje detekcije i zaobilaženje antivirusnih rješenja. Kod se nalazi na: https://github.com/kula124/Diplomski
Abstract (english)
The work explores different categories of malicious software with focus on ransomware. The theses categorizes ransomware among other malware and explains possible ways of its spreading and action. The paper also explains basic cyber security concepts and the ways malware spreads and attacks. Main principles of cryptography, cryptographic functions and algorithms are explained in detail, starting with AES cypher and onto RSA and ECC algorithms. The second part of the theses gives detailed implementation plans, concepts and, most importantly, code. Language for ransomware implementation is Go and command-and-control web application is written in JavaScript using NextJS framework. To make sure server runs easily on any machine, it is containerized using Docker virtualization tool. It can be run in conjunction with Tor Hidden Services also ran using Docker. The last part of the paper focuses on recovery and prevention of such attacks. Focus is set on Antivirus software and ways it detects and defeats malware. But since malware doesn’t go down without a fight, possible evasion methods are also discussed and shown. The paper introduces the concept of Crypters and Encoders as well as virtualization evasion and detection techniques employed by the malware writers. The code is located at Github repo: https://github.com/kula124/Diplomski
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:179:380934
Study programmeTitle: Computing
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka računarstva (magistar/magistra inženjer/inženjerka računarstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to authenticated users
Terms of useLicence In copyright icon
Created on2021-11-26 12:00:15