Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20240611-en
  • resource tags

    arch:armhfimage:debian9-armhf-20240611-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    10-10-2024 06:54

General

  • Target

    na.elf

  • Size

    99KB

  • MD5

    38886db10a384a1e73ffabccb9238bf7

  • SHA1

    a49168056b5983e71284ae1763e4137e7e3833b6

  • SHA256

    b98deb6e17828b98b27d18577fb8420df7ec9529b88afa470915e9edb1cf731c

  • SHA512

    85d234be9e8105c8470b991b08c21c1fbf02a86ac2b61a9d75a1b19cf965440f5c9ca7bfb2207bf2da88de00715ab5baed2f408b3f66a67868c46c5e2e95755f

  • SSDEEP

    1536:pTKgOunFegPVcXmKtrJ5C+NKb3Ox2PUc6zhH:pNL7PKWKhJ5DNKb7P6zh

Malware Config

Signatures

  • Contacts a large (57466) 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.

  • 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 3 IoCs

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

  • Deletes log files 1 TTPs 4 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:648

Network

MITRE ATT&CK Enterprise v15

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