Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    debian-12_mipsel
  • resource
    debian12-mipsel-20250619-en
  • resource tags

    arch:mipselimage:debian12-mipsel-20250619-enkernel:6.1.0-17-4kc-maltalocale:en-usos:debian-12-mipselsystem
  • submitted
    03/07/2025, 05:28

General

  • Target

    mipsel.elf

  • Size

    497KB

  • MD5

    2e328ff639c8c99b0bdc637bc3153619

  • SHA1

    897f15f8ea7ca6ce4a94cf5185d84bf482ed5924

  • SHA256

    f686accbe32136fab610609332b5b463049be4a85e1eb145311c9b3c137d253e

  • SHA512

    99e07283dd2ba333a19b66868b0b71512434502152c84e93e5474e408d485e3c47a79419e5d09c615e09b01a7854e8bdc0ddea445c036ceacbede2e38169b3be

  • SSDEEP

    12288:7A84JF9Qc8GgZxTM6m1U3snB6NnVuqnAtSyBpywBdlEykR6LkV6N0L8AXwtZJHZz:/M6m1U3rVuqAtSySwY1gEIZB

Malware Config

Signatures

  • Renames itself 1 IoCs
  • Checks hardware identifiers (DMI) 1 TTPs 2 IoCs

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

  • Creates/modifies Cron job 1 TTPs 1 IoCs

    Cron allows running tasks on a schedule, and is commonly used for malware persistence.

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Reads MAC address of network interface 2 TTPs 1 IoCs

    Fetches the MAC address of active network interfaces. May be used to detect known values for hypervisors.

  • Reads hardware information 1 TTPs 4 IoCs

    Accesses system info like serial numbers, manufacturer names etc.

  • 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 1 IoCs

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

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 2 IoCs

    Adversaries may gather information about the network configuration of a system.

  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/mipsel.elf
    /tmp/mipsel.elf
    1⤵
    • Renames itself
    • System Network Configuration Discovery
    PID:793
    • /bin/sh
      sh -c "crontab -l"
      2⤵
        PID:794
        • /usr/bin/crontab
          crontab -l
          3⤵
            PID:797
        • /bin/sh
          sh -c "(crontab -l ; echo \"@reboot /root/.sys/configuration\")| crontab -"
          2⤵
            PID:802
            • /usr/bin/crontab
              crontab -l
              3⤵
                PID:808
              • /usr/bin/crontab
                crontab -
                3⤵
                • Creates/modifies Cron job
                PID:807
          • /root/.sys/configuration
            /tmp/mipsel.elf
            1⤵
            • Checks hardware identifiers (DMI)
            • Reads MAC address of network interface
            • Reads hardware information
            • Checks CPU configuration
            • Reads CPU attributes
            • Enumerates kernel/hardware configuration
            • Reads runtime system information
            • System Network Configuration Discovery
            • Writes file to tmp directory
            PID:793

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • /var/spool/cron/crontabs/tmp.x7oviY

                  Filesize

                  208B

                  MD5

                  f359112bebca2e5c3c28232388d11051

                  SHA1

                  d98ecfb84792a2028c28785e8af24a64c80a3289

                  SHA256

                  ba7334f1c35d8eb6b7adab9d5d25b97e17d05ac59cb043e348d0addc30b966a2

                  SHA512

                  d61ebbb8e7b12c0ce97f8c877908ef138c47c703f6d0ea9277aa6cd98578f83d76f0d6b35f5dc57dfb2ce6b711590f02ad8136dd2390b76b93e0598ef3bb301f