Overview

overview

7

Static

static

1

I686.elf

ubuntu-18.04-amd64

7

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260126-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260126-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    04/05/2026, 12:36

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General

  • Target
    I686.elf
  • Size 29KB
  • Sample260504-ptc8lsfx9q
  • SHA256 38fd74abaeaefdac72b3360078fcc23ab69a55937e03223539fa283813a68d7f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
credential_accessdefense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

    defense_evasion
  • Creates/modifies Cron job 1 TTPs 1 IoCs

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

    executionpersistenceprivilege_escalation
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies init.d 2 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • Modifies rc script 2 TTPs 1 IoCs

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

    persistence
  • Modifies systemd 2 TTPs 1 IoCs

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

    persistenceprivilege_escalation
  • Reads system routing table 1 TTPs 1 IoCs

    Gets active network interfaces from /proc virtual filesystem.

    discovery
  • Reads process memory 1 TTPs 15 IoCs

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

    credential_access
  • Changes its process name 1 IoCs
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/I686.elf
    /tmp/I686.elf
    1⤵
    • Modifies Watchdog functionality
    • Modifies init.d
    • Modifies rc script
    • Modifies systemd
    • Reads system routing table
    • Reads process memory
    • Changes its process name
    • Reads system network configuration
    • Reads runtime system information
    PID:1531
    • /bin/sh
      sh -c "(crontab -l 2>/dev/null | grep -v '/usr/local/lib/.systemd-helper'; echo '@reboot /usr/local/lib/.systemd-helper') | crontab -"
      2⤵
        PID:1535
        • /bin/grep
          grep -v /usr/local/lib/.systemd-helper
          3⤵
            PID:1539
          • /usr/bin/crontab
            crontab -
            3⤵
            • Creates/modifies Cron job
            PID:1537
          • /usr/bin/crontab
            crontab -l
            3⤵
              PID:1538
          • /bin/sh
            sh -c "systemctl daemon-reload"
            2⤵
              PID:1540
              • /bin/systemctl
                systemctl daemon-reload
                3⤵
                  PID:1541
              • /bin/sh
                sh -c "systemctl enable botnet.service"
                2⤵
                  PID:1562
                  • /bin/systemctl
                    systemctl enable botnet.service
                    3⤵
                      PID:1563
                  • /bin/sh
                    sh -c "systemctl start botnet.service"
                    2⤵
                      PID:1587
                      • /bin/systemctl
                        systemctl start botnet.service
                        3⤵
                          PID:1588
                      • /bin/sh
                        sh -c "update-rc.d botnet defaults 2>/dev/null || chkconfig --add botnet 2>/dev/null"
                        2⤵
                          PID:1590
                          • /usr/sbin/update-rc.d
                            update-rc.d botnet defaults
                            3⤵
                              PID:1593
                              • /usr/local/sbin/systemctl
                                systemctl daemon-reload
                                4⤵
                                  PID:1595
                                • /usr/local/bin/systemctl
                                  systemctl daemon-reload
                                  4⤵
                                    PID:1595
                                  • /usr/sbin/systemctl
                                    systemctl daemon-reload
                                    4⤵
                                      PID:1595
                                    • /usr/bin/systemctl
                                      systemctl daemon-reload
                                      4⤵
                                        PID:1595
                                      • /sbin/systemctl
                                        systemctl daemon-reload
                                        4⤵
                                          PID:1595
                                        • /bin/systemctl
                                          systemctl daemon-reload
                                          4⤵
                                            PID:1595

                                    Network

                                          MITRE ATT&CK Enterprise v16

                                          Reconnaissance

                                          Resource Development

                                          Initial Access

                                          Execution

                                          Scheduled Task/Job

                                          1
                                          T1053

                                          Cron

                                          1
                                          T1053.003

                                          Persistence

                                          Boot or Logon Autostart Execution

                                          3
                                          T1547

                                          XDG Autostart Entries

                                          1
                                          T1547.013

                                          Boot or Logon Initialization Scripts

                                          2
                                          T1037

                                          RC Scripts

                                          2
                                          T1037.004

                                          Create or Modify System Process

                                          1
                                          T1543

                                          Systemd Service

                                          1
                                          T1543.002

                                          Scheduled Task/Job

                                          1
                                          T1053

                                          Cron

                                          1
                                          T1053.003

                                          Privilege Escalation

                                          Boot or Logon Autostart Execution

                                          3
                                          T1547

                                          XDG Autostart Entries

                                          1
                                          T1547.013

                                          Boot or Logon Initialization Scripts

                                          2
                                          T1037

                                          RC Scripts

                                          2
                                          T1037.004

                                          Create or Modify System Process

                                          1
                                          T1543

                                          Systemd Service

                                          1
                                          T1543.002

                                          Scheduled Task/Job

                                          1
                                          T1053

                                          Cron

                                          1
                                          T1053.003

                                          Defense Evasion

                                          Impair Defenses

                                          1
                                          T1562

                                          Credential Access

                                          OS Credential Dumping

                                          1
                                          T1003

                                          Proc Filesystem

                                          1
                                          T1003.007

                                          Discovery

                                          System Network Configuration Discovery

                                          2
                                          T1016

                                          Internet Connection Discovery

                                          2
                                          T1016.001

                                          Lateral Movement

                                          Collection

                                          Command and Control

                                          Exfiltration

                                          Impact

                                          Replay Monitor

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                                          Downloads

                                          botnet
                                          • Path /etc/init.d/botnet
                                          • Size 220B
                                          • SHA256 c483d71611e5401de1578e41c383132a83b7a1c8e8a7352e52ffec7e73fc6690
                                          • MD5 SHA1 SHA512 TLSH
                                          Submit Download

                                          botnet.service
                                          • Path /etc/systemd/system/botnet.service
                                          • Size 172B
                                          • SHA256 d12a2e359e7738c8de820dd4b363bf38083f79217a1938fec60e866ac49d0fe9
                                          • MD5 SHA1 SHA512 TLSH
                                          Submit Download

                                          .systemd-helper
                                          • Path /usr/local/lib/.systemd-helper
                                          • Size 29KB
                                          • SHA256 38fd74abaeaefdac72b3360078fcc23ab69a55937e03223539fa283813a68d7f
                                          • MD5 SHA1 SHA512 SSDEEP TLSH
                                          Submit Download

                                          tmp.ubuC0S
                                          • Path /var/spool/cron/crontabs/tmp.ubuC0S
                                          • Size 214B
                                          • SHA256 ac35939280ce9f487d35318d3f5c5c4e7c6487aa4b8a5cbc9e4d7fb6d01fd432
                                          • MD5 SHA1 SHA512 TLSH
                                          Submit Download