Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    debian-9_mipsel
  • resource
    debian9-mipsel-20250619-en
  • resource tags

    arch:mipselimage:debian9-mipsel-20250619-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
  • submitted
    03/07/2025, 05:25

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:711
    • /bin/sh
      sh -c "crontab -l"
      2⤵
        PID:712
        • /usr/bin/crontab
          crontab -l
          3⤵
          • Reads runtime system information
          PID:714
      • /bin/sh
        sh -c "(crontab -l ; echo \"@reboot /root/.sys/configuration\")| crontab -"
        2⤵
          PID:717
          • /usr/bin/crontab
            crontab -l
            3⤵
            • Reads runtime system information
            PID:721
          • /usr/bin/crontab
            crontab -
            3⤵
            • Creates/modifies Cron job
            • Reads runtime system information
            PID:719
      • /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:711

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            • /var/spool/cron/crontabs/tmp.BvD2nx

              Filesize

              208B

              MD5

              966c021897fcf49d3fb44a7ca850c2e0

              SHA1

              28095d46a647dec4740c0381d15c2095ceea3bb4

              SHA256

              0772c433455268054bbd5fcaa67eee22f1edc84839ebf0a507a1a8f2411bfc52

              SHA512

              0aec57e2a4d618147e2417048c9031c542c2566530fe07d95572bdb25135080c30483ba486cb7b6ee5bd81a9852e89aaad1d2deb37a1b3fd8e65d0e4ebf52af0