Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20240226-en
  • resource tags

    arch:armhfimage:debian9-armhf-20240226-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    09-04-2024 14:13

General

  • Target

    3546bba3b8b9b0b1efde6cfde42c2c3e.elf

  • Size

    5.0MB

  • MD5

    3546bba3b8b9b0b1efde6cfde42c2c3e

  • SHA1

    d2a30cfa814167f8b418ef5c4d6b961892b25c8d

  • SHA256

    9ebc0aa8b917cb4f775dce6a81d79623c812f9392397f1b5a63b7a9d9ab87ef0

  • SHA512

    de2547dfa4196c4ee25c21963a1e6a1b52fd93b22d826c67332c23750fc3303c9328f1986e16304a8ff898c99249d91836442c6c1dcc27267961956029e15bf8

  • SSDEEP

    49152:94hW9DuzBB1Lf5bQN4m9Dk3Lkmopv1ktVI1h:94hW9mB1Lf5T6kc

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 5 IoCs
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

  • Creates/modifies Cron job 1 TTPs 1 IoCs

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

  • Creates/modifies environment variables 1 TTPs 3 IoCs

    Creating/modifying environment variables is a common persistence mechanism.

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies init.d 1 TTPs 17 IoCs

    Adds/modifies system service, likely for persistence.

  • Write file to user bin folder 1 TTPs 2 IoCs
  • Modifies Bash startup script 1 TTPs 3 IoCs
  • Enumerates kernel/hardware configuration 1 TTPs 37 IoCs

    Reads contents of /sys virtual filesystem to enumerate system information.

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

Processes

  • /tmp/3546bba3b8b9b0b1efde6cfde42c2c3e.elf
    /tmp/3546bba3b8b9b0b1efde6cfde42c2c3e.elf
    1⤵
    • Enumerates kernel/hardware configuration
    PID:646
    • /tmp/3546bba3b8b9b0b1efde6cfde42c2c3e.elf
      /tmp/3546bba3b8b9b0b1efde6cfde42c2c3e.elf " "
      2⤵
      • Modifies Watchdog functionality
      • Creates/modifies environment variables
      • Modifies init.d
      • Modifies Bash startup script
      • Enumerates kernel/hardware configuration
      • Reads runtime system information
      PID:651
      • /bin/sh
        /bin/sh -c "/etc/32675&"
        3⤵
          PID:667
          • /etc/32675
            /etc/32675
            4⤵
            • Executes dropped EXE
            PID:669
            • /bin/sleep
              sleep 60
              5⤵
                PID:673
              • /etc/opt.services.cfg
                /etc/opt.services.cfg
                5⤵
                • Executes dropped EXE
                • Enumerates kernel/hardware configuration
                PID:843
                • /etc/opt.services.cfg
                  /etc/opt.services.cfg " "
                  6⤵
                  • Executes dropped EXE
                  • Enumerates kernel/hardware configuration
                  PID:847
              • /bin/sleep
                sleep 60
                5⤵
                  PID:848
                • /etc/opt.services.cfg
                  /etc/opt.services.cfg
                  5⤵
                  • Executes dropped EXE
                  • Enumerates kernel/hardware configuration
                  PID:875
                  • /etc/opt.services.cfg
                    /etc/opt.services.cfg " "
                    6⤵
                    • Executes dropped EXE
                    • Enumerates kernel/hardware configuration
                    PID:879
                • /bin/sleep
                  sleep 60
                  5⤵
                    PID:880
              • /usr/sbin/service
                service crond start
                3⤵
                  PID:671
                  • /usr/bin/basename
                    basename /usr/sbin/service
                    4⤵
                      PID:674
                    • /usr/bin/basename
                      basename /usr/sbin/service
                      4⤵
                        PID:676
                      • /bin/systemctl
                        systemctl --quiet is-active multi-user.target
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:679
                      • /bin/systemctl
                        systemctl -p Triggers show dbus.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        PID:691
                      • /bin/systemctl
                        systemctl -p Triggers show ssh.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:693
                      • /bin/systemctl
                        systemctl -p Triggers show syslog.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        PID:694
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-fsckd.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        PID:696
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-initctl.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:697
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-journald-audit.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:698
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-journald-dev-log.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:699
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-journald.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:700
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-networkd.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:701
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-rfkill.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:702
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-udevd-control.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:703
                      • /bin/systemctl
                        systemctl -p Triggers show systemd-udevd-kernel.socket
                        4⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:704
                    • /usr/local/sbin/systemctl
                      systemctl start crond.service
                      3⤵
                        PID:671
                      • /usr/local/bin/systemctl
                        systemctl start crond.service
                        3⤵
                          PID:671
                        • /usr/sbin/systemctl
                          systemctl start crond.service
                          3⤵
                            PID:671
                          • /usr/bin/systemctl
                            systemctl start crond.service
                            3⤵
                              PID:671
                            • /sbin/systemctl
                              systemctl start crond.service
                              3⤵
                                PID:671
                              • /bin/systemctl
                                systemctl start crond.service
                                3⤵
                                • Enumerates kernel/hardware configuration
                                • Reads runtime system information
                                PID:671
                              • /bin/sh
                                /bin/sh -c "echo \"*/1 * * * * root /.mod \" >> /etc/crontab"
                                3⤵
                                • Creates/modifies Cron job
                                PID:709
                          • /bin/sed
                            sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                            1⤵
                              PID:683
                            • /bin/systemctl
                              systemctl list-unit-files --full "--type=socket"
                              1⤵
                              • Enumerates kernel/hardware configuration
                              • Reads runtime system information
                              PID:682
                            • /usr/bin/renice
                              renice -20 651
                              1⤵
                                PID:716
                              • /bin/mount
                                mount -o bind /tmp/ /proc/651
                                1⤵
                                  PID:717
                                • /usr/sbin/service
                                  service cron start
                                  1⤵
                                    PID:719
                                    • /usr/bin/basename
                                      basename /usr/sbin/service
                                      2⤵
                                        PID:720
                                      • /usr/bin/basename
                                        basename /usr/sbin/service
                                        2⤵
                                          PID:722
                                        • /bin/systemctl
                                          systemctl --quiet is-active multi-user.target
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          PID:723
                                        • /bin/systemctl
                                          systemctl -p Triggers show dbus.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:731
                                        • /bin/systemctl
                                          systemctl -p Triggers show ssh.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:734
                                        • /bin/systemctl
                                          systemctl -p Triggers show syslog.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          PID:736
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-fsckd.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:738
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-initctl.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:740
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-journald-audit.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          PID:742
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-journald-dev-log.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:745
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-journald.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          PID:747
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-networkd.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:749
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-rfkill.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:752
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-udevd-control.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:757
                                        • /bin/systemctl
                                          systemctl -p Triggers show systemd-udevd-kernel.socket
                                          2⤵
                                          • Enumerates kernel/hardware configuration
                                          PID:760
                                      • /bin/systemctl
                                        systemctl list-unit-files --full "--type=socket"
                                        1⤵
                                        • Enumerates kernel/hardware configuration
                                        • Reads runtime system information
                                        PID:726
                                      • /bin/sed
                                        sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                        1⤵
                                          PID:727
                                        • /usr/local/sbin/systemctl
                                          systemctl start cron.service
                                          1⤵
                                            PID:719
                                          • /usr/local/bin/systemctl
                                            systemctl start cron.service
                                            1⤵
                                              PID:719
                                            • /usr/sbin/systemctl
                                              systemctl start cron.service
                                              1⤵
                                                PID:719
                                              • /usr/bin/systemctl
                                                systemctl start cron.service
                                                1⤵
                                                  PID:719
                                                • /sbin/systemctl
                                                  systemctl start cron.service
                                                  1⤵
                                                    PID:719
                                                  • /bin/systemctl
                                                    systemctl start cron.service
                                                    1⤵
                                                    • Enumerates kernel/hardware configuration
                                                    PID:719
                                                  • /bin/systemctl
                                                    systemctl start crond.service
                                                    1⤵
                                                    • Enumerates kernel/hardware configuration
                                                    • Reads runtime system information
                                                    PID:765

                                                  Network

                                                  MITRE ATT&CK Enterprise v15

                                                  Replay Monitor

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                                                  Downloads

                                                  • /.mod

                                                    Filesize

                                                    34B

                                                    MD5

                                                    f5a3713282e43c200f30342f5ff5e2ea

                                                    SHA1

                                                    2b2ce1a207e2b691a074c6f78f71c4785aae426a

                                                    SHA256

                                                    6ab64e727571458d4884fb2fe82c27c467db0699cb8f648b3f0217c35d2b7511

                                                    SHA512

                                                    5bcb8cd360409147a486755f90e0cdd97183af02ce8de5135b7c6a8a010deb9ef12dcd5ee9a2a8fd2e159347f68e72d6b7fd75e943b4fcd928d7a74b97476013

                                                  • /etc/.walk

                                                    Filesize

                                                    41B

                                                    MD5

                                                    a60859215268c6eeae99ac368c9ae433

                                                    SHA1

                                                    e3f4d8680648322248f462b4974c13720133928d

                                                    SHA256

                                                    e72326f7fca3bb9ea85b6e1ed6b65f4c0db8bebc52edde76de0882c57d86a15f

                                                    SHA512

                                                    4c96474a40faa7929d8842cc61a9911c1d1a096307c9419769f309218df617b3a36694532239a97d034d2ea1af024120b22bec1de8cc737e37076f8a43bf0791

                                                  • /etc/.walk

                                                    Filesize

                                                    90B

                                                    MD5

                                                    99b57ec6c36e430e71ba79f857d692a2

                                                    SHA1

                                                    1625ab712276a81d7f7522e23fd1d9a38cdf6da2

                                                    SHA256

                                                    1a68c592689c103268d0714f1b57d036c5c64baeda03680c01e2f76683838860

                                                    SHA512

                                                    ebc8264bef9561a2cac70f9f25bb88fe4d739a8f579466be4475ea81c9838551cb2ed4035b32e89fdf47bdfade35a8d02f8cb4d7c0fc7ae8ae8787cb39a40183

                                                  • /etc/32675

                                                    Filesize

                                                    61B

                                                    MD5

                                                    47684525bfdf26f49fd1cf742b17c015

                                                    SHA1

                                                    c4ab14ba22420ff9acadfc698a38d0cd99e9fbfa

                                                    SHA256

                                                    b7ce294613dd2c237a4a50548bfcd5c14d166107f2d2e965499bc78695300d5b

                                                    SHA512

                                                    948f9c519ae9afe1c821c5d58da2e584e50356dabef597ccd408853a9038560b9fb1c5894900e2725b48977ffd49d18a439436bb4946e2164ac9fcf2a8637621

                                                  • /etc/opt.services.cfg

                                                    Filesize

                                                    5.0MB

                                                    MD5

                                                    3546bba3b8b9b0b1efde6cfde42c2c3e

                                                    SHA1

                                                    d2a30cfa814167f8b418ef5c4d6b961892b25c8d

                                                    SHA256

                                                    9ebc0aa8b917cb4f775dce6a81d79623c812f9392397f1b5a63b7a9d9ab87ef0

                                                    SHA512

                                                    de2547dfa4196c4ee25c21963a1e6a1b52fd93b22d826c67332c23750fc3303c9328f1986e16304a8ff898c99249d91836442c6c1dcc27267961956029e15bf8

                                                  • /etc/profile.d/gateway.sh

                                                    Filesize

                                                    937B

                                                    MD5

                                                    abd4a8e1669eea8a5e9cf6ebc87dd2ea

                                                    SHA1

                                                    07bcc0c0dcb09278cf35eda79c87e19438749ec7

                                                    SHA256

                                                    096428c390883747d39ab503eac3da4bfd87ede3e12edee20200ad2c12302381

                                                    SHA512

                                                    7e2ebc470fb4886fd02853225de51ffb96cc1195cff5fffb88b636053333178232c683465819530ded96723791efc80d05785aecabf7e0a1d9f2f04d106b6d77

                                                  • /usr/bin/include/find

                                                    Filesize

                                                    134KB

                                                    MD5

                                                    138a27d6fe52fa1132760a4fa48922e0

                                                    SHA1

                                                    e0250e4d7bf33a5a1064344224148b889cb15138

                                                    SHA256

                                                    81a10dad907b23521461bd3fc83c2cedb2218933a328d9a05e3c9f6a9a1d42aa

                                                    SHA512

                                                    ee0078afad63fc2aaffdebb7127d1c7d4459287fee75358f57c82d397c39b7bf64338fb6996dfb1747cd9a896d714b3c76f0948727be91550f1affa1c0298a9e

                                                  • memory/696-1-0xb6b80000-0xb6b91044-memory.dmp