Analysis

  • max time kernel
    143s
  • max time network
    146s
  • platform
    debian-9_mipsel
  • resource
    debian9-mipsel-20240611-en
  • resource tags

    arch:mipselimage:debian9-mipsel-20240611-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
  • submitted
    10-10-2024 06:53

General

  • Target

    na.elf

  • Size

    74KB

  • MD5

    6e64b8522b853b17feed74a1170fbb8b

  • SHA1

    282451d78ecbace0efa5169e58132d11237b7e2f

  • SHA256

    91a22187062f3ef5b8b5ff190af212bf7105f88ddc26dd5c3952118562bda787

  • SHA512

    2ab996a776361f22a24474bbd5f9f71281ad01f054c2bd6e03c907e11334774d0b8d1f3aecc130f6506d6f5c9a0f8c27389cd55854e1689cab36a853a772496b

  • SSDEEP

    1536:Y0BRbaEOycqIGBWy+GtQ4DuXUWHCROZKwdS:7BBanycqIGkyHKCRO

Malware Config

Signatures

  • Creates a large amount of network flows 1 TTPs

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

  • Deletes system logs 1 TTPs 2 IoCs

    Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.

  • 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 4 IoCs

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

  • Deletes log files 1 TTPs 2 IoCs

    Deletes log files on the system.

  • 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 1 IoCs

Processes

  • /tmp/na.elf
    /tmp/na.elf
    1⤵
    • Deletes system logs
    • Modifies Watchdog functionality
    • Renames itself
    • Deletes log files
    • Reads process memory
    • Changes its process name
    PID:713

Network

MITRE ATT&CK Enterprise v15

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