Overview

overview

9

Static

static

8

d546509ab6...bea4a8

debian-9-mips

9

Analysis

  • max time kernel
    7229s
  • max time network
    124s
  • platform
    debian-9_mips
  • resource
    debian9-mipsbe-20221111-en
  • resource tags

    arch:mipsimage:debian9-mipsbe-20221111-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
  • submitted
    03-02-2023 10:06

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General

  • Target

    d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8

  • Size

    106KB

  • MD5

    4dde761681684d7edad4e5e1ffdb940b

  • SHA1

    2327be693bc11a618c380d7d3abc2382d870d48b

  • SHA256

    d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8

  • SHA512

    91a61c719128f263f9f95736d55895954cc468c74ff469ee061d35ec382c50b9165e9a5427dc46a835dac6ae0e6e1f9819632475f68b98a907b53196bd4eb02a

  • SSDEEP

    1536:3aQiZDMyqIlMBZ/R0F4E4kcHiNq98wk9njKZjjLuYo68864sNHFEzv7Ld76divkE:KzDMyqIMBZ/R0ufhBmgZy9yNsNmPtcE

Score
9/10
discoverypersistence

Malware Config

Signatures

  • Contacts a large (3269) amount of remote hosts 1 TTPs

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

    discovery
  • Modifies the Watchdog daemon 1 TTPs

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

  • Writes file to system bin folder 1 TTPs 2 IoCs
  • Modifies hosts file 1 IoCs

    Adds to hosts file used for mapping hosts to IP addresses.

  • Writes DNS configuration 1 TTPs 1 IoCs

    Writes data to DNS resolver config file.

  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

  • Modifies init.d 1 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • Reads system network configuration 1 TTPs 2 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Writes file to tmp directory 2 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8
    /tmp/d546509ab6670f9ff31783ed72875dfc0f37fa2b666bd5870eecaaed2ebea4a8
    1⤵
      PID:329
    • /bin/sh
      sh -c "iptables -I INPUT -p tcp --destination-port 22 -j DROP"
      1⤵
        PID:336
        • /sbin/iptables
          iptables -I INPUT -p tcp --destination-port 22 -j DROP
          2⤵
            PID:337
        • /bin/sh
          sh -c "iptables -I INPUT -p tcp --destination-port 23 -j DROP"
          1⤵
            PID:343
            • /sbin/iptables
              iptables -I INPUT -p tcp --destination-port 23 -j DROP
              2⤵
                PID:346
            • /bin/sh
              sh -c "iptables -I INPUT -p tcp --destination-port 2323 -j DROP"
              1⤵
                PID:347
                • /sbin/iptables
                  iptables -I INPUT -p tcp --destination-port 2323 -j DROP
                  2⤵
                    PID:348
                • /bin/sh
                  sh -c "iptables -I OUTPUT -p tcp --source-port 22 -j DROP"
                  1⤵
                    PID:349
                    • /sbin/iptables
                      iptables -I OUTPUT -p tcp --source-port 22 -j DROP
                      2⤵
                        PID:350
                    • /bin/sh
                      sh -c "iptables -I OUTPUT -p tcp --source-port 23 -j DROP"
                      1⤵
                        PID:351
                        • /sbin/iptables
                          iptables -I OUTPUT -p tcp --source-port 23 -j DROP
                          2⤵
                            PID:352
                        • /bin/sh
                          sh -c "iptables -I OUTPUT -p tcp --source-port 2323 -j DROP"
                          1⤵
                            PID:353
                            • /sbin/iptables
                              iptables -I OUTPUT -p tcp --source-port 2323 -j DROP
                              2⤵
                                PID:354
                            • /bin/sh
                              sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
                              1⤵
                                PID:355
                                • /sbin/iptables
                                  iptables -I INPUT -p tcp --destination-port 58000 -j DROP
                                  2⤵
                                    PID:356
                                • /bin/sh
                                  sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
                                  1⤵
                                    PID:357
                                    • /sbin/iptables
                                      iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
                                      2⤵
                                        PID:358
                                    • /bin/sh
                                      sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
                                      1⤵
                                        PID:359
                                      • /bin/sh
                                        sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
                                        1⤵
                                          PID:360
                                        • /bin/sh
                                          sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
                                          1⤵
                                            PID:361
                                            • /sbin/iptables
                                              iptables -I INPUT -p tcp --destination-port 35000 -j DROP
                                              2⤵
                                                PID:362
                                            • /bin/sh
                                              sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
                                              1⤵
                                                PID:363
                                                • /sbin/iptables
                                                  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
                                                  2⤵
                                                    PID:364
                                                • /bin/sh
                                                  sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
                                                  1⤵
                                                    PID:365
                                                    • /sbin/iptables
                                                      iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
                                                      2⤵
                                                        PID:366
                                                    • /bin/sh
                                                      sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
                                                      1⤵
                                                        PID:367
                                                        • /sbin/iptables
                                                          iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
                                                          2⤵
                                                            PID:368
                                                        • /bin/sh
                                                          sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
                                                          1⤵
                                                            PID:369
                                                            • /sbin/iptables
                                                              iptables -I INPUT -p tcp --destination-port 7547 -j DROP
                                                              2⤵
                                                                PID:370
                                                            • /bin/sh
                                                              sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
                                                              1⤵
                                                                PID:371
                                                                • /sbin/iptables
                                                                  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
                                                                  2⤵
                                                                    PID:372
                                                                • /bin/sh
                                                                  sh -c "iptables -I INPUT -p tcp --destination-port 54511 -j ACCEPT"
                                                                  1⤵
                                                                    PID:373
                                                                    • /sbin/iptables
                                                                      iptables -I INPUT -p tcp --destination-port 54511 -j ACCEPT
                                                                      2⤵
                                                                        PID:374
                                                                    • /bin/sh
                                                                      sh -c "iptables -I OUTPUT -p tcp --source-port 54511 -j ACCEPT"
                                                                      1⤵
                                                                        PID:375
                                                                        • /sbin/iptables
                                                                          iptables -I OUTPUT -p tcp --source-port 54511 -j ACCEPT
                                                                          2⤵
                                                                            PID:376
                                                                        • /bin/sh
                                                                          sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 54511 -j ACCEPT"
                                                                          1⤵
                                                                            PID:377
                                                                            • /sbin/iptables
                                                                              iptables -I PREROUTING -t nat -p tcp --destination-port 54511 -j ACCEPT
                                                                              2⤵
                                                                                PID:378
                                                                            • /bin/sh
                                                                              sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 54511 -j ACCEPT"
                                                                              1⤵
                                                                                PID:387
                                                                                • /sbin/iptables
                                                                                  iptables -I POSTROUTING -t nat -p tcp --source-port 54511 -j ACCEPT
                                                                                  2⤵
                                                                                    PID:388
                                                                                • /bin/sh
                                                                                  sh -c "iptables -I INPUT -p udp --destination-port 8081 -j ACCEPT"
                                                                                  1⤵
                                                                                    PID:389
                                                                                    • /sbin/iptables
                                                                                      iptables -I INPUT -p udp --destination-port 8081 -j ACCEPT
                                                                                      2⤵
                                                                                        PID:390
                                                                                    • /bin/sh
                                                                                      sh -c "iptables -I OUTPUT -p udp --source-port 8081 -j ACCEPT"
                                                                                      1⤵
                                                                                        PID:391
                                                                                        • /sbin/iptables
                                                                                          iptables -I OUTPUT -p udp --source-port 8081 -j ACCEPT
                                                                                          2⤵
                                                                                            PID:392
                                                                                        • /bin/sh
                                                                                          sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 8081 -j ACCEPT"
                                                                                          1⤵
                                                                                            PID:393
                                                                                            • /sbin/iptables
                                                                                              iptables -I PREROUTING -t nat -p udp --destination-port 8081 -j ACCEPT
                                                                                              2⤵
                                                                                                PID:394
                                                                                            • /bin/sh
                                                                                              sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 8081 -j ACCEPT"
                                                                                              1⤵
                                                                                                PID:395
                                                                                                • /sbin/iptables
                                                                                                  iptables -I POSTROUTING -t nat -p udp --source-port 8081 -j ACCEPT
                                                                                                  2⤵
                                                                                                    PID:396

                                                                                                Network

                                                                                                MITRE ATT&CK Enterprise v6

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