Overview

overview

10

Static

static

10

splarm.elf

debian-9-armhf

9

Analysis

  • max time kernel
    86s
  • max time network
    149s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20240729-en
  • resource tags

    arch:armhfimage:debian9-armhf-20240729-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    07/03/2025, 12:33

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General

  • Target

    splarm.elf

  • Size

    55KB

  • MD5

    d17c759bcd89675f7781f21088898ddc

  • SHA1

    3c2b80ee94c8d5d8b5de9d70512c809bae0825d7

  • SHA256

    e98bb85e62e8f36b216d399715963ab80b8ba269e6131b8cb158fd9ef593aee8

  • SHA512

    23cbed514c7968b2a45aa90e7bf0d64607edb7cc7b807830296d8237c15bd90cc627a07301a3651fa6d8ef7f803e10364b07134921e8ba18a2dcd888c0204022

  • SSDEEP

    1536:rd1UhwH0Oo6AIX4Syya5FIt5OTusy9V/a3:rd1Uhw9BJaUbuty9Vi3

Score
9/10
credential_accessdefense_evasiondiscovery

Malware Config

Signatures

  • Contacts a large (66131) 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
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

    defense_evasion
  • Renames itself 1 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • 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 process memory 1 TTPs 61 IoCs

    Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.

    credential_access
  • Changes its process name 1 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/splarm.elf
    /tmp/splarm.elf
    1⤵
    • Modifies Watchdog functionality
    • Renames itself
    • Enumerates active TCP sockets
    • Reads process memory
    • Changes its process name
    • Reads system network configuration
    • Reads runtime system information
    PID:645

Network

MITRE ATT&CK Enterprise v15

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