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
    14-11-2024 11:07

General

  • Target

    x86.elf

  • Size

    70KB

  • MD5

    18d166aa0a8825bfc772a23899028817

  • SHA1

    ec3479418e02b246f028111a2412fc9768730c07

  • SHA256

    c90a3da886eb3ca64580bf336147c75b05f9b2cee7fd060164e0102799c114e8

  • SHA512

    b32f3a4e2ed63eda2042cd20e0ab56200f6b2ad8ded85e9f1376a5e95a4ac392b9a8cb6cdde756d9853b2910d78fa9e5f4f8230b62d2fc60f98c27925ce70dca

  • SSDEEP

    1536:3u1LbYmm3aSuCKiilvIeAecynKMy1sekB:3u13Ymm3PEiilAyxyu

Malware Config

Signatures

  • Contacts a large (35503) 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.

  • Renames itself 1 IoCs
  • Unexpected DNS network traffic destination 3 IoCs

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

  • Checks mountinfo of local process 1 TTPs 1 IoCs

    Checks mountinfo of running processes which indicate if it is running in chroot jail.

  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

  • Reads process memory 1 TTPs 1 IoCs

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

  • Changes its process name 14 IoCs
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Reads runtime system information 1 IoCs

    Reads data from /proc virtual filesystem.

Processes

  • /tmp/x86.elf
    /tmp/x86.elf
    1⤵
    • Modifies Watchdog functionality
    • Renames itself
    • Checks mountinfo of local process
    • Enumerates active TCP sockets
    • Reads process memory
    • Changes its process name
    • Reads system network configuration
    • Reads runtime system information
    PID:2489

Network

MITRE ATT&CK Enterprise v15

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