Overview

overview

10

Static

static

10

mirai.mips.elf

debian-9-mips

10

Analysis

  • max time kernel
    137s
  • max time network
    149s
  • platform
    debian-9_mips
  • resource
    debian9-mipsbe-20251223-en
  • resource tags

    arch:mipsimage:debian9-mipsbe-20251223-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
  • submitted
    25/12/2025, 18:32

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General

  • Target
    mirai.mips.elf
  • Size 118KB
  • Sample251225-w6p69sdr21
  • SHA256 0ac340123d2b9a1e91b66972a970cb940fd985824aeeea584a38d903be6f0dc8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
botnetdiscoverymiraipersistence

Malware Config

Signatures

  • Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

    botnetmirai
  • Mirai family
    mirai
  • Contacts a large (22176) 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
  • Deletes itself 1 IoCs
  • 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 init.d 2 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • Modifies rc script 2 TTPs 1 IoCs

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

    persistence
  • Write file to user bin folder 1 IoCs
    persistence
  • Changes its process name 3 IoCs
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • System Network Configuration Discovery 1 TTPs 3 IoCs

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

    discovery

Processes

  • /tmp/mirai.mips.elf
    /tmp/mirai.mips.elf
    1⤵
    • Deletes itself
    • Enumerates active TCP sockets
    • Modifies init.d
    • Modifies rc script
    • Changes its process name
    • Reads system network configuration
    • Reads runtime system information
    • System Network Configuration Discovery
    PID:713
    • /bin/sh
      sh -c "cp /tmp/mirai.mips.elf /usr/bin/.sh 2>/dev/null"
      2⤵
      • System Network Configuration Discovery
      PID:717
      • /bin/cp
        cp /tmp/mirai.mips.elf /usr/bin/.sh
        3⤵
        • Write file to user bin folder
        • Reads runtime system information
        • System Network Configuration Discovery
        PID:719

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        sysd
        • Path /etc/init.d/sysd
        • Size 25B
        • SHA256 ba1d50d125344f273c249426ccd744d5a12e560ace41cca4bc55bd2d4a718d8f
        • MD5 SHA1 SHA512
        Submit Download

        .sh
        • Path /usr/bin/.sh
        • Size 118KB
        • SHA256 0ac340123d2b9a1e91b66972a970cb940fd985824aeeea584a38d903be6f0dc8
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download