Overview

overview

9

Static

static

1

armv5l.elf

debian-12-armhf

9

Analysis

  • max time kernel
    148s
  • max time network
    153s
  • 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
    06/10/2026, 06:19

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General

  • Target
    armv5l.elf
  • Size 559KB
  • Sample261006-g299basbpc
  • SHA256 18a6d56d3e50136ad04d500b43cfa0d67a24574db8794b334ac5afdb4ef2fb1e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
command_and_controldefense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • Contacts a large (10462) amount of remote hosts 1 TTPs

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

    discovery
  • Outbound SSH connection to public host 2 TTPs 28 IoCs

    SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

    command_and_control
  • Creates a large amount of network flows 1 TTPs

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

    discovery
  • Creates/modifies Cron job 1 TTPs 5 IoCs

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

    executionpersistenceprivilege_escalation
  • Creates/modifies environment variables 1 TTPs 1 IoCs

    Creating/modifying environment variables is a common persistence mechanism.

    persistenceprivilege_escalationdefense_evasion
  • Modifies init.d 2 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • Modifies rc script 2 TTPs 2 IoCs

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

    persistence
  • Modifies systemd 2 TTPs 2 IoCs

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

    persistenceprivilege_escalation
  • Reads MAC address of network interface 2 TTPs 1 IoCs

    Fetches the MAC address of active network interfaces. May be used to detect known values for hypervisors.

    defense_evasiondiscovery
  • Reads system routing table 1 TTPs 1 IoCs

    Gets active network interfaces from /proc virtual filesystem.

    discovery
  • Modifies Bash startup script 2 TTPs 1 IoCs
    persistence
  • Changes its process name 1 IoCs
  • Reads system network configuration 1 TTPs 3 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Enumerates kernel/hardware configuration 1 TTPs 1 IoCs

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

    discovery
  • Reads runtime system information 5 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/armv5l.elf
    /tmp/armv5l.elf
    1⤵
    • Creates/modifies Cron job
    • Creates/modifies environment variables
    • Modifies init.d
    • Modifies rc script
    • Modifies systemd
    • Reads MAC address of network interface
    • Reads system routing table
    • Modifies Bash startup script
    • Changes its process name
    • Reads system network configuration
    • Enumerates kernel/hardware configuration
    • Reads runtime system information
    PID:781
    • /bin/sh
      sh -c "systemctl enable .svc-mon.service 2>/dev/null"
      2⤵
        PID:807
        • /usr/bin/systemctl
          systemctl enable .svc-mon.service
          3⤵
          • Reads runtime system information
          PID:808
      • /bin/sh
        sh -c "systemctl start .svc-mon.service 2>/dev/null"
        2⤵
          PID:830
          • /usr/bin/systemctl
            systemctl start .svc-mon.service
            3⤵
            • Reads runtime system information
            PID:831
        • /bin/sh
          sh -c "update-rc.d .svc-mon defaults 2>/dev/null"
          2⤵
            PID:833
            • /usr/sbin/update-rc.d
              update-rc.d .svc-mon defaults
              3⤵
                PID:834
                • /usr/local/sbin/systemctl
                  systemctl daemon-reload
                  4⤵
                    PID:835
                  • /usr/local/bin/systemctl
                    systemctl daemon-reload
                    4⤵
                      PID:835
                    • /usr/sbin/systemctl
                      systemctl daemon-reload
                      4⤵
                        PID:835
                      • /usr/bin/systemctl
                        systemctl daemon-reload
                        4⤵
                        • Reads runtime system information
                        PID:835
                  • /bin/sh
                    sh -c "rc-update add .svc-mon 2>/dev/null"
                    2⤵
                      PID:855

                  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

                        4
                        T1547

                        XDG Autostart Entries

                        1
                        T1547.013

                        Boot or Logon Initialization Scripts

                        2
                        T1037

                        RC Scripts

                        2
                        T1037.004

                        Create or Modify System Process

                        1
                        T1543

                        Systemd Service

                        1
                        T1543.002

                        Event Triggered Execution

                        1
                        T1546

                        Unix Shell Configuration Modification

                        1
                        T1546.004

                        Hijack Execution Flow

                        1
                        T1574

                        Path Interception by PATH Environment Variable

                        1
                        T1574.007

                        Scheduled Task/Job

                        1
                        T1053

                        Cron

                        1
                        T1053.003

                        Privilege Escalation

                        Boot or Logon Autostart Execution

                        4
                        T1547

                        XDG Autostart Entries

                        1
                        T1547.013

                        Boot or Logon Initialization Scripts

                        2
                        T1037

                        RC Scripts

                        2
                        T1037.004

                        Create or Modify System Process

                        1
                        T1543

                        Systemd Service

                        1
                        T1543.002

                        Event Triggered Execution

                        1
                        T1546

                        Unix Shell Configuration Modification

                        1
                        T1546.004

                        Hijack Execution Flow

                        1
                        T1574

                        Path Interception by PATH Environment Variable

                        1
                        T1574.007

                        Scheduled Task/Job

                        1
                        T1053

                        Cron

                        1
                        T1053.003

                        Defense Evasion

                        Hijack Execution Flow

                        1
                        T1574

                        Path Interception by PATH Environment Variable

                        1
                        T1574.007

                        Credential Access

                        Discovery

                        Network Service Discovery

                        3
                        T1046

                        System Information Discovery

                        1
                        T1082

                        System Network Configuration Discovery

                        3
                        T1016

                        Internet Connection Discovery

                        2
                        T1016.001

                        Wi-Fi Discovery

                        1
                        T1016.002

                        System Network Connections Discovery

                        1
                        T1049

                        Lateral Movement

                        Collection

                        Command and Control

                        Protocol Tunneling

                        1
                        T1572

                        Exfiltration

                        Impact

                        Replay Monitor

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                        Downloads

                        svc-mon
                        • Path /etc/cron.d/svc-mon
                        • Size 129B
                        • SHA256 76b81f996bc68009cbe399de7599874ce411951eff6f87b3971cd2a5ea8b45df
                        • MD5 SHA1 SHA512 TLSH
                        Submit Download

                        root
                        • Path /etc/cron.hourly/root
                        • Size 40B
                        • SHA256 7a3a3649881167fe961b585e4584e1355da78458d4442a113b2e048aa23b9aeb
                        • MD5 SHA1 SHA512
                        Submit Download

                        .svc-mon
                        • Path /etc/init.d/.svc-mon
                        • Size 482B
                        • SHA256 b36d3f20ff24f2dad3b2c3d11e72630c0b34ecaedae059aebd82fa68a7bfd40b
                        • MD5 SHA1 SHA512 TLSH
                        Submit Download

                        .svc-mon.sh
                        • Path /etc/profile.d/.svc-mon.sh
                        • Size 84B
                        • SHA256 61118c5070379a55292cfe6bfb9462d0bdc60263909f24c1f8155a2a09f5ec95
                        • MD5 SHA1 SHA512 TLSH
                        Submit Download

                        .svc-mon.service
                        • Path /etc/systemd/system/.svc-mon.service
                        • Size 187B
                        • SHA256 9f5324806c62c759f3c0a312438fe3f5b39c6a1e6f09bfe7fc65ea8642d97759
                        • MD5 SHA1 SHA512 TLSH
                        Submit Download

                        .svc-mon
                        • Path /usr/lib/.cache/.svc-mon
                        • Size 559KB
                        • SHA256 18a6d56d3e50136ad04d500b43cfa0d67a24574db8794b334ac5afdb4ef2fb1e
                        • MD5 SHA1 SHA512 SSDEEP TLSH
                        Submit Download

                        root
                        • Path /var/spool/cron/crontabs/root
                        • Size 71B
                        • SHA256 7089b0fc40ff0f3cbdbaba94883d22cf6772035b722c44b992eea87ca4b74e57
                        • MD5 SHA1 SHA512 TLSH
                        Submit Download