General

  • Target
    linux_386.elf
  • Size 1.8MB
  • Sample250416-w94ttstyht
  • SHA256 5aa6cc2b09d7fa0d3c5b6826f872826f5d3afb9af18c001ea3f4f1a1ccb188f7
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • kaiji

C2
  • 154.40.47.248:809

Targets

    • Target
      linux_386.elf
    • Size 1.8MB
    • SHA256 5aa6cc2b09d7fa0d3c5b6826f872826f5d3afb9af18c001ea3f4f1a1ccb188f7
    • MD5 SHA1 SHA512 SSDEEP
    • Kaiji

      Kaiji payload

    • Kaiji family

    • Executes dropped EXE

    • Modifies Watchdog functionality

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

    • Creates/modifies Cron job

      Cron allows running tasks on a schedule, and is commonly used for malware persistence.

    • Creates/modifies environment variables

      Creating/modifying environment variables is a common persistence mechanism.

    • Enumerates running processes

      Discovers information about currently running processes on the system

    • Modifies init.d

      Adds/modifies system service, likely for persistence.

    • Modifies systemd

      Adds/ modifies systemd service files. Likely to achieve persistence.

    • Write file to user bin folder

    • Modifies Bash startup script

MITRE ATT&CK Enterprise v16

Tasks