Overview

overview

7

Static

static

1

i486.elf

ubuntu-18.04-amd64

7

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General

  • Target
    i486.elf
  • Size 117KB
  • Sample260808-r1972ayejd
  • SHA256 748d9b669833810f30005f7682cdab81ca6d51a941383acc7c0ea3ceeb2b303f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
antivmdefense_evasiondiscoverylinuxpersistence

Malware Config

Targets

    • Target
      i486.elf
    • Size 117KB
    • SHA256 748d9b669833810f30005f7682cdab81ca6d51a941383acc7c0ea3ceeb2b303f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    7/10
    antivmdefense_evasiondiscoverypersistence

    • Modifies Watchdog functionality

      Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

      defense_evasion

    • Modifies the /etc/hosts DNS resolution file

      Modifying the /etc/hosts name-resolution file changes IP routing, which can facilitate traffic hijacking or the blocking of (security update) endpoints.

    • Traces itself

      Traces itself to prevent debugging attempts

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Enumerates active TCP sockets

      Gets active TCP sockets from /proc virtual filesystem.

      discovery

    • Modifies init.d

      Adds/modifies system service, likely for persistence.

      persistence

    • Modifies rc script

      Adding/modifying system rc scripts is a common persistence mechanism.

      persistence
    behavioral1

MITRE ATT&CK Enterprise v16

Tasks