Overview

overview

10

Static

static

10

arm.elf

debian-9-armhf

7

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20240418-en
  • resource tags

    arch:armhfimage:debian9-armhf-20240418-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    01/01/2025, 16:09

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General

  • Target

    arm.elf

  • Size

    82KB

  • MD5

    c29418d4e5670276c4e09e8600327919

  • SHA1

    3807e79f2a9ab460d41223775fcd03fd5b784c33

  • SHA256

    278c03f07e3ca082c11f74e9b98c45aa12134e253f14f7fa2b58970077b78b1a

  • SHA512

    15304d54a5ac9189f662ba40d86ba33db1e0749438289a9944bd88319fde776f3e4e857bea320365ef69136455b0885547c129cac8522c5ab34fbd3294635879

  • SSDEEP

    1536:boViXgeg8lbip2Mq/UrMFswJflvwT7F/LEHRn7r6sSHv43:boV/KH1WwJtYT7RLEJfe43

Score
7/10
defense_evasiondiscoveryevasionpersistenceprivilege_escalation

Malware Config

Signatures

  • Deletes Audit logs 1 TTPs 1 IoCs

    Deletes logs related to the Linux Audit framework.

    evasion
  • Deletes itself 1 IoCs
  • Deletes system logs 1 TTPs 2 IoCs

    Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.

    evasion
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

    defense_evasion
  • Deletes log files 1 TTPs 2 IoCs

    Deletes log files on the system.

    defense_evasion
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies systemd 2 TTPs 1 IoCs

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

    persistenceprivilege_escalation
  • Changes its process name 1 IoCs
  • Enumerates kernel/hardware configuration 1 TTPs 2 IoCs

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

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/arm.elf
    /tmp/arm.elf
    1⤵
    • Deletes Audit logs
    • Deletes itself
    • Deletes system logs
    • Modifies Watchdog functionality
    • Deletes log files
    • Modifies systemd
    • Changes its process name
    • Reads runtime system information
    PID:646
    • /bin/sh
      sh -c "systemctl daemon-reload"
      2⤵
        PID:652
        • /bin/systemctl
          systemctl daemon-reload
          3⤵
          • Enumerates kernel/hardware configuration
          • Reads runtime system information
          PID:658
      • /bin/sh
        sh -c "systemctl enable startup_command.service"
        2⤵
          PID:669
          • /bin/systemctl
            systemctl enable startup_command.service
            3⤵
            • Enumerates kernel/hardware configuration
            • Reads runtime system information
            PID:671

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • /etc/systemd/system/startup_command.service
        Filesize

        361B

        MD5

        4d2c868f454b6c55731485cf0f886dc0

        SHA1

        032b125de0a28dcee8d8d25fbeeb56db7f403f04

        SHA256

        8c4ae1b82477698f3a8c273b439cb9079794afb8fc33cd4def854936ba37ea2c

        SHA512

        060b2413a0cb2dec0db059c190467b5cb0d76209effea4ae3de2701fa71429b811a6f7e11e813b26806cf72578d1f32b608a02a4ce670ec58b5b65433e3cf11d

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