Analysis

  • max time kernel
    62s
  • max time network
    151s
  • 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
    04/05/2026, 06:03

General

  • Target
    x86.elf
  • Size 61KB
  • Sample260504-gr9vsscx21
  • SHA256 91fd248d32b02f28a527c07f23449630c62ce61ae5bc37717b8b6ef51a051724
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Contacts a large (86424) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

  • Unexpected DNS network traffic destination 64 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Reads process memory 1 TTPs 47 IoCs

    Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.

  • Changes its process name 1 IoCs
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Reads runtime system information 58 IoCs

    Reads data from /proc virtual filesystem.

Processes

  • /tmp/x86.elf
    /tmp/x86.elf
    1⤵
    • Modifies Watchdog functionality
    • Enumerates active TCP sockets
    • Reads process memory
    • Changes its process name
    • Reads system network configuration
    • Reads runtime system information
    PID:1528

Network

        MITRE ATT&CK Enterprise v16

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