General

  • Target
    arm7.urbotnetisass.elf
  • Size 232KB
  • Sample251002-2blhgsv1bw
  • SHA256 cbbc768c826536615593040b59c54b05412ce8afd5d1db669db4b24afd275c9c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      arm7.urbotnetisass.elf
    • Size 232KB
    • SHA256 cbbc768c826536615593040b59c54b05412ce8afd5d1db669db4b24afd275c9c
    • MD5 SHA1 SHA512 SSDEEP
    • Deletes Audit logs

      Deletes logs related to the Linux Audit framework.

    • Deletes journal logs

      Deletes systemd journal logs. Likely to evade detection.

    • Modifies Watchdog functionality

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

    • Checks mountinfo of local process

      Checks mountinfo of running processes which indicate if it is running in chroot jail.

    • 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 active TCP sockets

      Gets active TCP sockets from /proc virtual filesystem.

    • Enumerates running processes

      Discovers information about currently running processes on the system

    • Modifies rc script

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

    • Reads list of loaded kernel modules

      Reads the list of currently loaded kernel modules, possibly to detect virtual environments.

    • Write file to user bin folder

    • Writes file to system bin folder

    • Modifies Bash startup script

    • Reads process memory

      Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.

MITRE ATT&CK Enterprise v16

Tasks