Overview

overview

10

Static

static

10

.5r3fqt67e...86.elf

ubuntu-24.04-amd64

9

Analysis

  • max time kernel
    135s
  • max time network
    154s
  • platform
    ubuntu-24.04_amd64
  • resource
    ubuntu2404-amd64-20240523-en
  • resource tags

    arch:amd64arch:i386image:ubuntu2404-amd64-20240523-enkernel:6.8.0-31-genericlocale:en-usos:ubuntu-24.04-amd64system
  • submitted
    10-12-2024 17:12

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General

  • Target

    .5r3fqt67ew531has4231.x86.elf

  • Size

    230KB

  • MD5

    f3bde1f4aaceda824ee6f0817d63a06b

  • SHA1

    487232a8fd1c42efa68f31fbc2cc057adbe052b7

  • SHA256

    c188ca874598c395a247f7e1e1a79203bb767339075fa1d51b47091c62939082

  • SHA512

    a1656ef2a2768466629b8956bab42f70797f431a20bc251b07e2390c71a46690fb98134c35f69ad8274e3c21d1e9da1dabc05774a9b33dbfef60f6bbb5bda83d

  • SSDEEP

    3072:RXtfaFtWuxyW7A03vfdbV10kzZpPJKxU4n9zlMzG4QDsOG7rHkvWQwbZnUz:baKuxyW7ACvfdbfZpkx16+RWQwRU

Score
9/10
defense_evasiondiscovery

Malware Config

Signatures

  • Contacts a large (133571) 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 2 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

    defense_evasion
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

    defense_evasion
  • Changes its process name 1 IoCs
  • Reads runtime system information 3 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/.5r3fqt67ew531has4231.x86.elf
    /tmp/.5r3fqt67ew531has4231.x86.elf
    1⤵
    • Modifies Watchdog functionality
    • Changes its process name
    • Reads runtime system information
    PID:4066
    • /bin/sh
      sh -c "rm -rf bin/busybox && mkdir bin; >bin/busybox && mv /tmp/.5r3fqt67ew531has4231.x86.elf bin/busybox; chmod 777 bin/busybox"
      2⤵
      • File and Directory Permissions Modification
      • Writes file to tmp directory
      PID:4068
      • /usr/bin/rm
        rm -rf bin/busybox
        3⤵
          PID:4069
        • /usr/bin/mkdir
          mkdir bin
          3⤵
          • Reads runtime system information
          PID:4070
        • /usr/bin/mv
          mv /tmp/.5r3fqt67ew531has4231.x86.elf bin/busybox
          3⤵
          • Reads runtime system information
          PID:4071
        • /usr/bin/chmod
          chmod 777 bin/busybox
          3⤵
          • File and Directory Permissions Modification
          PID:4072

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads