Overview

overview

8

Static

static

8

bin.sh

debian-9-mips

8

Analysis

  • max time kernel
    30s
  • max time network
    33s
  • platform
    linux_mips
  • resource
    debian9-mipsbe-en-20211208
  • resource tags

    arch:mipsimage:debian9-mipsbe-en-20211208kernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
  • submitted
    01-07-2023 08:28

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General

  • Target

    bin.sh

  • Size

    132KB

  • MD5

    59ce0baba11893f90527fc951ac69912

  • SHA1

    5857a7dd621c4c3ebb0b5a3bec915d409f70d39f

  • SHA256

    4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7

  • SHA512

    c5b12797b477e5e5964a78766bb40b1c0d9fdfb8eef1f9aee3df451e3441a40c61d325bf400ba51048811b68e1c70a95f15e4166b7a65a4eca0c624864328647

  • SSDEEP

    3072:phNlHuBafLeBtfCzpta8xlBIOdVo3/4sxLJ10xioP:p3lOYoaja8xzx/0wsxzSi2

Score
8/10
discovery

Malware Config

Signatures

  • Contacts a large (1859) amount of remote hosts 1 TTPs

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

    discovery
  • Changes its process name 1 IoCs
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

    Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

  • Reads system routing table 1 TTPs 1 IoCs

    Gets active network interfaces from /proc virtual filesystem.

  • Writes file to system bin folder 1 TTPs 2 IoCs
  • Reads system network configuration 1 TTPs 3 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Reads runtime system information 2 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/bin.sh
    /tmp/bin.sh
    1⤵
    • Enumerates active TCP sockets
    • Reads system network configuration
    • Reads runtime system information
    • Writes file to tmp directory
    PID:336
  • /bin/sh
    sh -c "killall -9 telnetd utelnetd scfgmgr"
    1⤵
      PID:339
    • /bin/sh
      sh -c "iptables -I INPUT -p tcp --destination-port 40131 -j ACCEPT"
      1⤵
      • Changes its process name
      PID:350
      • /sbin/iptables
        iptables -I INPUT -p tcp --destination-port 40131 -j ACCEPT
        2⤵
          PID:351
      • /bin/sh
        sh -c "iptables -I OUTPUT -p tcp --source-port 40131 -j ACCEPT"
        1⤵
          PID:356
          • /sbin/iptables
            iptables -I OUTPUT -p tcp --source-port 40131 -j ACCEPT
            2⤵
              PID:357
          • /bin/sh
            sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 40131 -j ACCEPT"
            1⤵
              PID:358
              • /sbin/iptables
                iptables -I PREROUTING -t nat -p tcp --destination-port 40131 -j ACCEPT
                2⤵
                  PID:359
              • /bin/sh
                sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 40131 -j ACCEPT"
                1⤵
                  PID:367
                  • /sbin/iptables
                    iptables -I POSTROUTING -t nat -p tcp --source-port 40131 -j ACCEPT
                    2⤵
                      PID:368
                  • /bin/sh
                    sh -c "iptables -I INPUT -p tcp --dport 40131 -j ACCEPT"
                    1⤵
                      PID:369
                      • /sbin/iptables
                        iptables -I INPUT -p tcp --dport 40131 -j ACCEPT
                        2⤵
                          PID:370
                      • /bin/sh
                        sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
                        1⤵
                          PID:371
                          • /sbin/iptables
                            iptables -I INPUT -p tcp --destination-port 22 -j DROP
                            2⤵
                              PID:373
                          • /bin/sh
                            sh -c "iptables -I OUTPUT -p tcp --sport 40131 -j ACCEPT"
                            1⤵
                              PID:372
                              • /sbin/iptables
                                iptables -I OUTPUT -p tcp --sport 40131 -j ACCEPT
                                2⤵
                                  PID:374
                              • /bin/sh
                                sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
                                1⤵
                                  PID:375
                                  • /sbin/iptables
                                    iptables -I INPUT -p tcp --destination-port 23 -j DROP
                                    2⤵
                                      PID:377
                                  • /bin/sh
                                    sh -c "iptables -I PREROUTING -t nat -p tcp --dport 40131 -j ACCEPT"
                                    1⤵
                                      PID:376
                                      • /sbin/iptables
                                        iptables -I PREROUTING -t nat -p tcp --dport 40131 -j ACCEPT
                                        2⤵
                                          PID:378
                                      • /bin/sh
                                        sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
                                        1⤵
                                          PID:379
                                          • /sbin/iptables
                                            iptables -I INPUT -p tcp --destination-port 2323 -j DROP
                                            2⤵
                                              PID:380
                                          • /bin/sh
                                            sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 40131 -j ACCEPT"
                                            1⤵
                                              PID:381
                                              • /sbin/iptables
                                                iptables -I POSTROUTING -t nat -p tcp --sport 40131 -j ACCEPT
                                                2⤵
                                                  PID:382
                                              • /bin/sh
                                                sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
                                                1⤵
                                                  PID:383
                                                  • /sbin/iptables
                                                    iptables -I OUTPUT -p tcp --source-port 22 -j DROP
                                                    2⤵
                                                      PID:384
                                                  • /bin/sh
                                                    sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
                                                    1⤵
                                                      PID:385
                                                      • /sbin/iptables
                                                        iptables -I OUTPUT -p tcp --source-port 23 -j DROP
                                                        2⤵
                                                          PID:386
                                                      • /bin/sh
                                                        sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
                                                        1⤵
                                                          PID:387
                                                          • /sbin/iptables
                                                            iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
                                                            2⤵
                                                              PID:388
                                                          • /bin/sh
                                                            sh -c "iptables -I INPUT -p tcp --dport 22 -j DROP"
                                                            1⤵
                                                              PID:389
                                                              • /sbin/iptables
                                                                iptables -I INPUT -p tcp --dport 22 -j DROP
                                                                2⤵
                                                                  PID:390
                                                              • /bin/sh
                                                                sh -c "iptables -I INPUT -p tcp --dport 23 -j DROP"
                                                                1⤵
                                                                  PID:391
                                                                  • /sbin/iptables
                                                                    iptables -I INPUT -p tcp --dport 23 -j DROP
                                                                    2⤵
                                                                      PID:392
                                                                  • /bin/sh
                                                                    sh -c "iptables -I INPUT -p tcp --dport 2323 -j DROP"
                                                                    1⤵
                                                                      PID:393
                                                                      • /sbin/iptables
                                                                        iptables -I INPUT -p tcp --dport 2323 -j DROP
                                                                        2⤵
                                                                          PID:394
                                                                      • /bin/sh
                                                                        sh -c "iptables -I OUTPUT -p tcp --sport 22 -j DROP"
                                                                        1⤵
                                                                          PID:395
                                                                          • /sbin/iptables
                                                                            iptables -I OUTPUT -p tcp --sport 22 -j DROP
                                                                            2⤵
                                                                              PID:396
                                                                          • /bin/sh
                                                                            sh -c "iptables -I OUTPUT -p tcp --sport 23 -j DROP"
                                                                            1⤵
                                                                              PID:397
                                                                              • /sbin/iptables
                                                                                iptables -I OUTPUT -p tcp --sport 23 -j DROP
                                                                                2⤵
                                                                                  PID:398
                                                                              • /bin/sh
                                                                                sh -c "iptables -I OUTPUT -p tcp --sport 2323 -j DROP"
                                                                                1⤵
                                                                                  PID:399
                                                                                  • /sbin/iptables
                                                                                    iptables -I OUTPUT -p tcp --sport 2323 -j DROP
                                                                                    2⤵
                                                                                      PID:400

                                                                                  Network

                                                                                  MITRE ATT&CK Enterprise v6

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                                                                                  Downloads

                                                                                  • memory/336-1-0x00400000-0x004c2fd8-memory.dmp

                                                                                    Download