Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    debian-12_armhf
  • resource
    debian12-armhf-20240221-en
  • resource tags

    arch:armhfimage:debian12-armhf-20240221-enkernel:6.1.0-17-armmp-lpaelocale:en-usos:debian-12-armhfsystem
  • submitted
    07/03/2025, 12:11

General

  • Target

    zerarm7.elf

  • Size

    72KB

  • MD5

    eaabc7aad745c2d680ea6bfc9444abbb

  • SHA1

    c1823744d9b6d8ebc3e268b769761816a3b7e707

  • SHA256

    912bfae6bac55c7a62b01ba0926e88ddae64c892757e6e7e26f94ff032422b6c

  • SHA512

    371cb11d0555fe0ef01e36bc6fa798cc3526a4c813a64203651d3a6aa272d2146ab2823dcbff479b5a8dc413865d586d9f3f3919ce05fe51c5cce69621f81d98

  • SSDEEP

    1536:tdn6SsyWpUI66PvdMg3+rh5z1OZtBlDwwOLtwyGn9a9luOZciYvxLr:ZsyWUgvdMA+947BlDwwOLtwyGLu+vxn

Malware Config

Signatures

  • 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 2 IoCs

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

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Changes its process name 1 IoCs
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

Processes

  • /tmp/zerarm7.elf
    /tmp/zerarm7.elf
    1⤵
    • Modifies Watchdog functionality
    • Renames itself
    • Changes its process name
    • Reads runtime system information
    PID:708

Network

MITRE ATT&CK Enterprise v15

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