System-Level support for intrusion recovery

  • Authors:
  • Andrei Bacs;Remco Vermeulen;Asia Slowinska;Herbert Bos

  • Affiliations:
  • Network Institute, VU University Amsterdam, The Netherlands;Network Institute, VU University Amsterdam, The Netherlands;Network Institute, VU University Amsterdam, The Netherlands;Network Institute, VU University Amsterdam, The Netherlands

  • Venue:
  • DIMVA'12 Proceedings of the 9th international conference on Detection of Intrusions and Malware, and Vulnerability Assessment
  • Year:
  • 2012

Quantified Score

Hi-index 0.00

Visualization

Abstract

Recovering from attacks is hard and gets harder as the time between the initial infection and its detection increases. Which files did the attackers modify? Did any of user data depend on malicious inputs? Can I still trust my own documents or binaries? When malcode has been active for some time and its actions are mixed with those of benign applications, these questions are impossible to answer on current systems. In this paper, we describe DiskDuster, an attack analysis and recovery system capable of recovering from complicated attacks in a semi-automated manner. DiskDuster traces malcode at byte-level granularity both in memory and on disk in a modified version of QEMU. Using taint analysis, DiskDuster also tracks all bytes written by the malcode, to provide a detailed view on what (bytes in) files derive from malicious data. Next, it uses this information to remove malicious actions at recovery time.