Analysis

  • max time kernel
    149s
  • max time network
    148s
  • 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, 05:28

General

  • Target

    mipsel.elf

  • Size

    497KB

  • MD5

    8ec3ecb36af7ec5d6a4c99e113523877

  • SHA1

    717487a73fdc871acf1e9fed1481e13f94389c35

  • SHA256

    1155e7fc20f281f4cd3d899223663dbfdde8c979816df5c60cb2d021d73b4c38

  • SHA512

    c11ef92f867562f09f609198126ae15c6ec13c6aff57d8e73f70ee3748e4836b2c5f969bae973a2188de6f15e70ee9ff5db1478c5aa867c525497b2fd7ccf4dd

  • 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:702
    • /bin/sh
      sh -c "crontab -l"
      2⤵
        PID:703
        • /usr/bin/crontab
          crontab -l
          3⤵
          • Reads runtime system information
          PID:705
      • /bin/sh
        sh -c "(crontab -l ; echo \"@reboot /root/.sys/configuration\")| crontab -"
        2⤵
          PID:707
          • /usr/bin/crontab
            crontab -l
            3⤵
            • Reads runtime system information
            PID:712
          • /usr/bin/crontab
            crontab -
            3⤵
            • Creates/modifies Cron job
            PID:711
      • /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:702

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

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

              Filesize

              208B

              MD5

              0d9f567dc152036c07805d6a39f8484f

              SHA1

              1e91240d4daf47f1b58c08a37bc7e1ec1043b1a4

              SHA256

              239d280a9a8eb4d82665c775e2f6aac27d9a8b66d37ec24f6955ec072fedefeb

              SHA512

              ac73e472dddd75c17c15915d1fd15e78d4e5b63f96c088a27d1eb8a28a8e57bc46bc7642e614fffe69c0c5d23de50aab34baa7ee21e460c32bb3cc6a0947fac9