Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    debian-12_armhf
  • resource
    debian12-armhf-20260127-en
  • resource tags

    arch:armhfimage:debian12-armhf-20260127-enkernel:6.1.0-17-armmp-lpaelocale:en-usos:debian-12-armhfsystem
  • submitted
    25/05/2026, 10:52

General

  • Target
    bluefix.armv7.elf
  • Size 2.4MB
  • Sample260525-mykr5shs21
  • SHA256 e0bbf8208a9cb5d5c21f9118ca4395d2a9e1004a12a169125f06e6818aa9f88c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Changes its process name 4 IoCs
  • Checks CPU configuration 1 TTPs 1 IoCs

    Checks CPU information which indicate if the system is a virtual machine.

  • Reads CPU attributes 1 TTPs 1 IoCs
  • Enumerates kernel/hardware configuration 1 TTPs 5 IoCs

    Reads contents of /sys virtual filesystem to enumerate system information.

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/bluefix.armv7.elf
    /tmp/bluefix.armv7.elf
    1⤵
    • Changes its process name
    • Checks CPU configuration
    • Reads CPU attributes
    • Enumerates kernel/hardware configuration
    • Reads runtime system information
    • Writes file to tmp directory
    PID:811

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        .xmrlock

        • Path /tmp/.xmrlock
        • Size 4B
        • SHA256 99609216d723c87c90d42d4f3b41ad2374c4246cdc10e9bd2ce85c416d6758b0
        • MD5 SHA1 SHA512