Overview

overview

7

Static

static

1

flutter.arm7.elf

debian-12-armhf

7

Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    debian-12_armhf
  • resource
    debian12-armhf-20260513-en
  • resource tags

    arch:armhfimage:debian12-armhf-20260513-enkernel:6.1.0-17-armmp-lpaelocale:en-usos:debian-12-armhfsystem
  • submitted
    17/08/2026, 05:43

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General

  • Target
    flutter.arm7.elf
  • Size 161KB
  • Sample260817-gex1gatfma
  • SHA256 198921ccca7125a2a0626de79f58c44123ea0eb112abca19d7900e5f36a435ae
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
defense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • 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 1 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 rc script 2 TTPs 1 IoCs

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

    persistence
  • Modifies systemd 2 TTPs 1 IoCs

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

    persistenceprivilege_escalation
  • 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

Processes

  • /tmp/flutter.arm7.elf
    /tmp/flutter.arm7.elf
    1⤵
    • Modifies Watchdog functionality
    • Creates/modifies Cron job
    • 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:787
    • /usr/local/sbin/systemctl
      systemctl daemon-reload
      2⤵
        PID:796
      • /usr/local/bin/systemctl
        systemctl daemon-reload
        2⤵
          PID:796
        • /usr/sbin/systemctl
          systemctl daemon-reload
          2⤵
            PID:796
          • /usr/bin/systemctl
            systemctl daemon-reload
            2⤵
              PID:796
            • /usr/local/sbin/systemctl
              systemctl enable network-dispatch.service
              2⤵
                PID:829
              • /usr/local/bin/systemctl
                systemctl enable network-dispatch.service
                2⤵
                  PID:829
                • /usr/sbin/systemctl
                  systemctl enable network-dispatch.service
                  2⤵
                    PID:829
                  • /usr/bin/systemctl
                    systemctl enable network-dispatch.service
                    2⤵
                      PID:829

                  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

                        2
                        T1547

                        XDG Autostart Entries

                        1
                        T1547.013

                        Boot or Logon Initialization Scripts

                        1
                        T1037

                        RC Scripts

                        1
                        T1037.004

                        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

                        2
                        T1547

                        XDG Autostart Entries

                        1
                        T1547.013

                        Boot or Logon Initialization Scripts

                        1
                        T1037

                        RC Scripts

                        1
                        T1037.004

                        Create or Modify System Process

                        1
                        T1543

                        Systemd Service

                        1
                        T1543.002

                        Scheduled Task/Job

                        1
                        T1053

                        Cron

                        1
                        T1053.003

                        Defense Evasion

                        Impair Defenses

                        1
                        T1562

                        Credential Access

                        Discovery

                        System Network Configuration Discovery

                        1
                        T1016

                        Internet Connection Discovery

                        1
                        T1016.001

                        System Network Connections Discovery

                        1
                        T1049

                        Lateral Movement

                        Collection

                        Command and Control

                        Exfiltration

                        Impact

                        Replay Monitor

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                        Downloads

                        flutter
                        • Path /etc/cron.d/flutter
                        • Size 37B
                        • SHA256 b65539cdcaaf30a09a9c013966042db0035604e3fdd7e17876c9949757de0287
                        • MD5 SHA1 SHA512
                        Submit Download

                        network-dispatch.service
                        • Path /etc/systemd/system/network-dispatch.service
                        • Size 228B
                        • SHA256 f0a4522d9cacf37bc711ef07c7a07d2627ac3fb2a25e13e1695db14896da415e
                        • MD5 SHA1 SHA512 TLSH
                        Submit Download

                        network-dispatch
                        • Path /usr/local/bin/network-dispatch
                        • Size 161KB
                        • SHA256 198921ccca7125a2a0626de79f58c44123ea0eb112abca19d7900e5f36a435ae
                        • MD5 SHA1 SHA512 SSDEEP TLSH
                        Submit Download