Overview

overview

10

Static

static

10

rebirth.x86.elf

ubuntu-24.04-amd64

9

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    ubuntu-24.04_amd64
  • resource
    ubuntu2404-amd64-20240729-en
  • resource tags

    arch:amd64arch:i386image:ubuntu2404-amd64-20240729-enkernel:6.8.0-31-genericlocale:en-usos:ubuntu-24.04-amd64system
  • submitted
    10-12-2024 05:22

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General

  • Target

    rebirth.x86.elf

  • Size

    72KB

  • MD5

    c87a8c9dbe0035532b4f16fd0b962cab

  • SHA1

    ba5ed2d0af16ee5a1544a56f68d37e3822908b25

  • SHA256

    045f548b113bf0d7d77fad1ac21b97bd81ec84f894b637bf9e4278a1239f75c5

  • SHA512

    9d453f532581a6e5025c506d4bef484387fd73ce65776532889d8862e32091ab41e35306ba586f3fd03f1effa70ab11ec333c316c9a6e00c16c6f407e0ad3462

  • SSDEEP

    1536:C1aDNBMdqLIMpnrjuiyWPjgwPiZeXf66VDcXC6BEMNdXBlr3DFwbZn8:JNewUgn+pYjgDIy6+EMHBlTDFwbZn8

Score
9/10
defense_evasiondiscoverypersistence

Malware Config

Signatures

  • Contacts a large (24150) 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 rc script 2 TTPs 1 IoCs

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

    persistence
  • Changes its process name 1 IoCs
  • Reads runtime system information 2 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/rebirth.x86.elf
    /tmp/rebirth.x86.elf
    1⤵
    • Modifies rc script
    • Changes its process name
    PID:2515
    • /bin/sh
      sh -c "rm -rf bin/watchdog && mkdir bin; >bin/watchdog && mv /tmp/rebirth.x86.elf bin/watchdog; chmod 777 bin/watchdog"
      2⤵
      • File and Directory Permissions Modification
      • Writes file to tmp directory
      PID:2517
      • /usr/bin/rm
        rm -rf bin/watchdog
        3⤵
          PID:2518
        • /usr/bin/mkdir
          mkdir bin
          3⤵
          • Reads runtime system information
          PID:2519
        • /usr/bin/mv
          mv /tmp/rebirth.x86.elf bin/watchdog
          3⤵
          • Reads runtime system information
          PID:2520
        • /usr/bin/chmod
          chmod 777 bin/watchdog
          3⤵
          • File and Directory Permissions Modification
          PID:2521

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads