Overview

overview

6

Static

static

1

data.x86.elf

ubuntu-18.04-amd64

6

Analysis

  • max time kernel
    140s
  • max time network
    140s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20251231-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20251231-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    01/01/2026, 19:54

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General

  • Target
    data.x86.elf
  • Size 840KB
  • Sample260101-ymr8macz8a
  • SHA256 df6368c3e38fd3027439ce6033ca0d0d86cd04b02c4fac6ef89caafa620b5720
  • MD5 SHA1 SHA512 SSDEEP
Score
6/10
credential_accessdiscoverypersistence

Malware Config

Signatures

  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

    discovery
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies init.d 2 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • Modifies rc script 2 TTPs 1 IoCs

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

    persistence
  • Reads process memory 1 TTPs 64 IoCs

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

    credential_access
  • Changes its process name 3 IoCs
  • Reads system network configuration 1 TTPs 2 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/data.x86.elf
    /tmp/data.x86.elf
    1⤵
    • Enumerates active TCP sockets
    • Modifies init.d
    • Modifies rc script
    • Reads process memory
    • Changes its process name
    • Reads system network configuration
    • Reads runtime system information
    PID:1521
    • /bin/sh
      sh -c -- "cp udevd /usr/bin/.sh"
      2⤵
        PID:1524
        • /bin/cp
          cp udevd /usr/bin/.sh
          3⤵
            PID:1525
        • /bin/sh
          sh -c -- "iptables -A OUTPUT -d 45.131.65.74 -j ACCEPT 2>/dev/null"
          2⤵
            PID:1528
            • /sbin/iptables
              iptables -A OUTPUT -d 45.131.65.74 -j ACCEPT
              3⤵
                PID:1529
            • /bin/sh
              sh -c -- "iptables -A INPUT -s 45.131.65.74 -j ACCEPT 2>/dev/null"
              2⤵
                PID:1532
                • /sbin/iptables
                  iptables -A INPUT -s 45.131.65.74 -j ACCEPT
                  3⤵
                    PID:1533

              Network

                    MITRE ATT&CK Enterprise v16

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                    Downloads

                    sysd
                    • Path /etc/init.d/sysd
                    • Size 25B
                    • SHA256 ba1d50d125344f273c249426ccd744d5a12e560ace41cca4bc55bd2d4a718d8f
                    • MD5 SHA1 SHA512
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