Overview

overview

10

Static

static

10

bin.sh

debian-12-armhf

9

Analysis

  • max time kernel
    18s
  • max time network
    153s
  • platform
    debian-12_armhf
  • resource
    debian12-armhf-20260127-en
  • resource tags

    arch:armhfimage:debian12-armhf-20260127-enkernel:6.1.0-17-armmp-lpaelocale:en-usos:debian-12-armhfsystem
  • submitted
    25/09/2026, 06:17

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General

  • Target
    bin.sh
  • Size 300KB
  • Sample260925-g11ngstyew
  • SHA256 12013662c71da69de977c04cd7021f13a70cf7bed4ca6c82acbc100464d4b0ef
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
defense_evasiondiscoveryexecution

Malware Config

Signatures

  • Contacts a large (3887) amount of remote hosts 1 TTPs

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

    discovery
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

    defense_evasion
  • 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

  • Reads system routing table 1 TTPs 1 IoCs

    Gets active network interfaces from /proc virtual filesystem.

    discovery
  • Writes file to system bin folder 2 IoCs
  • Changes its process name 1 IoCs
  • Reads system network configuration 1 TTPs 3 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Command and Scripting Interpreter: Unix Shell 1 TTPs 5 IoCs

    Execute scripts via Unix Shell.

    execution
  • 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/bin.sh
    /tmp/bin.sh
    1⤵
    • Modifies Watchdog functionality
    • Enumerates active TCP sockets
    • Reads system routing table
    • Writes file to system bin folder
    • Changes its process name
    • Reads system network configuration
    • Reads runtime system information
    • Writes file to tmp directory
    PID:806
    • /bin/sh
      /bin/sh -c "killall -9 telnetd utelnetd scfgmgr"
      2⤵
      • Command and Scripting Interpreter: Unix Shell
      PID:828
      • /usr/bin/killall
        killall -9 telnetd utelnetd scfgmgr
        3⤵
        • Reads runtime system information
        PID:830
    • /bin/sh
      /bin/sh -c "iptables -I INPUT -p tcp --destination-port 55313 -j ACCEPT"
      2⤵
        PID:878
      • /bin/sh
        /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 55313 -j ACCEPT"
        2⤵
        • Command and Scripting Interpreter: Unix Shell
        • System Network Configuration Discovery
        PID:879
      • /bin/sh
        /bin/sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 55313 -j ACCEPT"
        2⤵
          PID:880
        • /bin/sh
          /bin/sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 55313 -j ACCEPT"
          2⤵
          • Command and Scripting Interpreter: Unix Shell
          • System Network Configuration Discovery
          PID:881
        • /bin/sh
          /bin/sh -c "iptables -I INPUT -p tcp --dport 55313 -j ACCEPT"
          2⤵
            PID:882
          • /bin/sh
            /bin/sh -c "iptables -I OUTPUT -p tcp --sport 55313 -j ACCEPT"
            2⤵
            • Command and Scripting Interpreter: Unix Shell
            • System Network Configuration Discovery
            PID:883
          • /bin/sh
            /bin/sh -c "iptables -I PREROUTING -t nat -p tcp --dport 55313 -j ACCEPT"
            2⤵
              PID:884
            • /bin/sh
              /bin/sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 55313 -j ACCEPT"
              2⤵
              • Command and Scripting Interpreter: Unix Shell
              • System Network Configuration Discovery
              PID:885

          Network

                MITRE ATT&CK Enterprise v16

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