Overview

overview

10

Static

static

10

ciubuc_i586.elf

ubuntu-18.04-amd64

9

Analysis

  • max time kernel
    58s
  • max time network
    153s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260126-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260126-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    22/04/2026, 16:07

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General

  • Target
    ciubuc_i586.elf
  • Size 2.3MB
  • Sample260422-tkxccae16z
  • SHA256 85164fea465e06401fe7441a11df99c229f4c37d3fd80050e906532f80df9fd0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
defense_evasiondiscovery

Malware Config

Signatures

  • Contacts a large (149504) 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
  • Deletes itself 1 IoCs
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

    defense_evasion
  • Traces itself 3 IoCs

    Traces itself to prevent debugging attempts

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Changes its process name 4 IoCs
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/ciubuc_i586.elf
    /tmp/ciubuc_i586.elf
    1⤵
    • Deletes itself
    • Modifies Watchdog functionality
    • Traces itself
    • Changes its process name
    • Reads runtime system information
    PID:1519

Network

        MITRE ATT&CK Enterprise v16

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