Overview

overview

10

Static

static

bin.shkajsfoam

linux_armhf

10

Analysis

  • max time kernel
    11946s
  • max time network
    193s
  • platform
    linux_armhf
  • resource
    debian9-armhf-en-20211208
  • submitted
    25-04-2022 21:46

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General

  • Target

    bin.shkajsfoam

  • Size

    300KB

  • MD5

    eec5c6c219535fba3a0492ea8118b397

  • SHA1

    292559e94f1c04b7d0c65d4a01bbbc5dc1ff6f21

  • SHA256

    12013662c71da69de977c04cd7021f13a70cf7bed4ca6c82acbc100464d4b0ef

  • SHA512

    3482c8324a18302f0f37b6e23ed85f24fff9f50bb568d8fd7461bf57f077a7c592f7a88bb2e1c398699958946d87bb93ab744d13a0003f9b879c15e6471f7400

Score
10/10
discoverypersistencesuricata

Malware Config

Signatures

  • suricata: ET MALWARE JAWS Webserver Unauthenticated Shell Command Execution

    suricata: ET MALWARE JAWS Webserver Unauthenticated Shell Command Execution

    suricata
  • suricata: ET MALWARE Mirai Variant User-Agent (Outbound)

    suricata: ET MALWARE Mirai Variant User-Agent (Outbound)

    suricata
  • Contacts a large (32212) amount of remote hosts 1 TTPs

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

    discovery
  • Creates a large amount of network flows 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 routing table 1 TTPs 1 IoCs

    Gets active network interfaces from /proc virtual filesystem.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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

  • ./bin.shkajsfoam
    ./bin.shkajsfoam
    1⤵
    • Enumerates active TCP sockets
    • Reads system network configuration
    PID:357
  • /bin/sh
    /bin/sh -c "killall -9 telnetd utelnetd scfgmgr"
    1⤵
      PID:360
    • /bin/sh
      /bin/sh -c "iptables -I INPUT -p tcp --destination-port 45529 -j ACCEPT"
      1⤵
        PID:375
        • /sbin/iptables
          iptables -I INPUT -p tcp --destination-port 45529 -j ACCEPT
          2⤵
            PID:376
        • /bin/sh
          /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 45529 -j ACCEPT"
          1⤵
            PID:381
            • /sbin/iptables
              iptables -I OUTPUT -p tcp --source-port 45529 -j ACCEPT
              2⤵
                PID:382
            • /bin/sh
              /bin/sh -c "iptables -I PREROUTING -t nat -p tcp --destination-port 45529 -j ACCEPT"
              1⤵
                PID:383
                • /sbin/iptables
                  iptables -I PREROUTING -t nat -p tcp --destination-port 45529 -j ACCEPT
                  2⤵
                    PID:384
                • /bin/sh
                  /bin/sh -c "iptables -I POSTROUTING -t nat -p tcp --source-port 45529 -j ACCEPT"
                  1⤵
                    PID:393
                    • /sbin/iptables
                      iptables -I POSTROUTING -t nat -p tcp --source-port 45529 -j ACCEPT
                      2⤵
                        PID:394
                    • /bin/sh
                      /bin/sh -c "iptables -I INPUT -p tcp --destination-port 58000 -j DROP"
                      1⤵
                        PID:395
                        • /sbin/iptables
                          iptables -I INPUT -p tcp --destination-port 58000 -j DROP
                          2⤵
                            PID:396
                        • /bin/sh
                          /bin/sh -c "iptables -I INPUT -p tcp --dport 45529 -j ACCEPT"
                          1⤵
                            PID:397
                            • /sbin/iptables
                              iptables -I INPUT -p tcp --dport 45529 -j ACCEPT
                              2⤵
                                PID:398
                            • /bin/sh
                              /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 58000 -j DROP"
                              1⤵
                                PID:399
                                • /sbin/iptables
                                  iptables -I OUTPUT -p tcp --source-port 58000 -j DROP
                                  2⤵
                                    PID:400
                                • /bin/sh
                                  /bin/sh -c "iptables -I OUTPUT -p tcp --sport 45529 -j ACCEPT"
                                  1⤵
                                    PID:401
                                    • /sbin/iptables
                                      iptables -I OUTPUT -p tcp --sport 45529 -j ACCEPT
                                      2⤵
                                        PID:402
                                    • /bin/sh
                                      /bin/sh -c "iptables -I INPUT -p tcp --dport 58000 -j DROP"
                                      1⤵
                                        PID:403
                                        • /sbin/iptables
                                          iptables -I INPUT -p tcp --dport 58000 -j DROP
                                          2⤵
                                            PID:404
                                        • /bin/sh
                                          /bin/sh -c "iptables -I PREROUTING -t nat -p tcp --dport 45529 -j ACCEPT"
                                          1⤵
                                            PID:406
                                            • /sbin/iptables
                                              iptables -I PREROUTING -t nat -p tcp --dport 45529 -j ACCEPT
                                              2⤵
                                                PID:408
                                            • /bin/sh
                                              /bin/sh -c "iptables -I OUTPUT -p tcp --sport 58000 -j DROP"
                                              1⤵
                                                PID:409
                                                • /sbin/iptables
                                                  iptables -I OUTPUT -p tcp --sport 58000 -j DROP
                                                  2⤵
                                                    PID:410
                                                • /bin/sh
                                                  /bin/sh -c "iptables -I POSTROUTING -t nat -p tcp --sport 45529 -j ACCEPT"
                                                  1⤵
                                                    PID:411
                                                    • /sbin/iptables
                                                      iptables -I POSTROUTING -t nat -p tcp --sport 45529 -j ACCEPT
                                                      2⤵
                                                        PID:412
                                                    • /bin/sh
                                                      /bin/sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer URL \"http://127.0.0.1\""
                                                      1⤵
                                                        PID:413
                                                      • /bin/sh
                                                        /bin/sh -c "cfgtool set /mnt/jffs2/hw_ctree.xml InternetGatewayDevice.ManagementServer ConnectionRequestPassword \"acsMozi\""
                                                        1⤵
                                                          PID:414
                                                        • /bin/sh
                                                          /bin/sh -c "iptables -I INPUT -p tcp --destination-port 35000 -j DROP"
                                                          1⤵
                                                            PID:415
                                                            • /sbin/iptables
                                                              iptables -I INPUT -p tcp --destination-port 35000 -j DROP
                                                              2⤵
                                                                PID:416
                                                            • /bin/sh
                                                              /bin/sh -c "iptables -I INPUT -p tcp --destination-port 50023 -j DROP"
                                                              1⤵
                                                                PID:417
                                                                • /sbin/iptables
                                                                  iptables -I INPUT -p tcp --destination-port 50023 -j DROP
                                                                  2⤵
                                                                    PID:418
                                                                • /bin/sh
                                                                  /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 50023 -j DROP"
                                                                  1⤵
                                                                    PID:419
                                                                    • /sbin/iptables
                                                                      iptables -I OUTPUT -p tcp --source-port 50023 -j DROP
                                                                      2⤵
                                                                        PID:420
                                                                    • /bin/sh
                                                                      /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 35000 -j DROP"
                                                                      1⤵
                                                                        PID:421
                                                                        • /sbin/iptables
                                                                          iptables -I OUTPUT -p tcp --source-port 35000 -j DROP
                                                                          2⤵
                                                                            PID:422
                                                                        • /bin/sh
                                                                          /bin/sh -c "iptables -I INPUT -p tcp --destination-port 7547 -j DROP"
                                                                          1⤵
                                                                            PID:423
                                                                            • /sbin/iptables
                                                                              iptables -I INPUT -p tcp --destination-port 7547 -j DROP
                                                                              2⤵
                                                                                PID:424
                                                                            • /bin/sh
                                                                              /bin/sh -c "iptables -I OUTPUT -p tcp --source-port 7547 -j DROP"
                                                                              1⤵
                                                                                PID:425
                                                                                • /sbin/iptables
                                                                                  iptables -I OUTPUT -p tcp --source-port 7547 -j DROP
                                                                                  2⤵
                                                                                    PID:426
                                                                                • /bin/sh
                                                                                  /bin/sh -c "iptables -I INPUT -p tcp --dport 35000 -j DROP"
                                                                                  1⤵
                                                                                    PID:427
                                                                                    • /sbin/iptables
                                                                                      iptables -I INPUT -p tcp --dport 35000 -j DROP
                                                                                      2⤵
                                                                                        PID:428
                                                                                    • /bin/sh
                                                                                      /bin/sh -c "iptables -I INPUT -p tcp --dport 50023 -j DROP"
                                                                                      1⤵
                                                                                        PID:429
                                                                                        • /sbin/iptables
                                                                                          iptables -I INPUT -p tcp --dport 50023 -j DROP
                                                                                          2⤵
                                                                                            PID:430
                                                                                        • /bin/sh
                                                                                          /bin/sh -c "iptables -I OUTPUT -p tcp --sport 50023 -j DROP"
                                                                                          1⤵
                                                                                            PID:431
                                                                                            • /sbin/iptables
                                                                                              iptables -I OUTPUT -p tcp --sport 50023 -j DROP
                                                                                              2⤵
                                                                                                PID:432
                                                                                            • /bin/sh
                                                                                              /bin/sh -c "iptables -I OUTPUT -p tcp --sport 35000 -j DROP"
                                                                                              1⤵
                                                                                                PID:433
                                                                                                • /sbin/iptables
                                                                                                  iptables -I OUTPUT -p tcp --sport 35000 -j DROP
                                                                                                  2⤵
                                                                                                    PID:434
                                                                                                • /bin/sh
                                                                                                  /bin/sh -c "iptables -I INPUT -p tcp --dport 7547 -j DROP"
                                                                                                  1⤵
                                                                                                    PID:436
                                                                                                    • /sbin/iptables
                                                                                                      iptables -I INPUT -p tcp --dport 7547 -j DROP
                                                                                                      2⤵
                                                                                                        PID:438
                                                                                                    • /bin/sh
                                                                                                      /bin/sh -c "iptables -I OUTPUT -p tcp --sport 7547 -j DROP"
                                                                                                      1⤵
                                                                                                        PID:439
                                                                                                        • /sbin/iptables
                                                                                                          iptables -I OUTPUT -p tcp --sport 7547 -j DROP
                                                                                                          2⤵
                                                                                                            PID:440
                                                                                                        • /bin/sh
                                                                                                          /bin/sh -c "iptables -I INPUT -p udp --destination-port 5060 -j ACCEPT"
                                                                                                          1⤵
                                                                                                            PID:445
                                                                                                            • /sbin/iptables
                                                                                                              iptables -I INPUT -p udp --destination-port 5060 -j ACCEPT
                                                                                                              2⤵
                                                                                                                PID:446
                                                                                                            • /bin/sh
                                                                                                              /bin/sh -c "iptables -I OUTPUT -p udp --source-port 5060 -j ACCEPT"
                                                                                                              1⤵
                                                                                                                PID:447
                                                                                                                • /sbin/iptables
                                                                                                                  iptables -I OUTPUT -p udp --source-port 5060 -j ACCEPT
                                                                                                                  2⤵
                                                                                                                    PID:448
                                                                                                                • /bin/sh
                                                                                                                  /bin/sh -c "iptables -I PREROUTING -t nat -p udp --destination-port 5060 -j ACCEPT"
                                                                                                                  1⤵
                                                                                                                    PID:449
                                                                                                                    • /sbin/iptables
                                                                                                                      iptables -I PREROUTING -t nat -p udp --destination-port 5060 -j ACCEPT
                                                                                                                      2⤵
                                                                                                                        PID:450
                                                                                                                    • /bin/sh
                                                                                                                      /bin/sh -c "iptables -I POSTROUTING -t nat -p udp --source-port 5060 -j ACCEPT"
                                                                                                                      1⤵
                                                                                                                        PID:451
                                                                                                                        • /sbin/iptables
                                                                                                                          iptables -I POSTROUTING -t nat -p udp --source-port 5060 -j ACCEPT
                                                                                                                          2⤵
                                                                                                                            PID:452
                                                                                                                        • /bin/sh
                                                                                                                          /bin/sh -c "iptables -I INPUT -p udp --dport 5060 -j ACCEPT"
                                                                                                                          1⤵
                                                                                                                            PID:453
                                                                                                                            • /sbin/iptables
                                                                                                                              iptables -I INPUT -p udp --dport 5060 -j ACCEPT
                                                                                                                              2⤵
                                                                                                                                PID:454
                                                                                                                            • /bin/sh
                                                                                                                              /bin/sh -c "iptables -I OUTPUT -p udp --sport 5060 -j ACCEPT"
                                                                                                                              1⤵
                                                                                                                                PID:455
                                                                                                                                • /sbin/iptables
                                                                                                                                  iptables -I OUTPUT -p udp --sport 5060 -j ACCEPT
                                                                                                                                  2⤵
                                                                                                                                    PID:456
                                                                                                                                • /bin/sh
                                                                                                                                  /bin/sh -c "iptables -I PREROUTING -t nat -p udp --dport 5060 -j ACCEPT"
                                                                                                                                  1⤵
                                                                                                                                    PID:457
                                                                                                                                    • /sbin/iptables
                                                                                                                                      iptables -I PREROUTING -t nat -p udp --dport 5060 -j ACCEPT
                                                                                                                                      2⤵
                                                                                                                                        PID:458
                                                                                                                                    • /bin/sh
                                                                                                                                      /bin/sh -c "iptables -I POSTROUTING -t nat -p udp --sport 5060 -j ACCEPT"
                                                                                                                                      1⤵
                                                                                                                                        PID:459
                                                                                                                                        • /sbin/iptables
                                                                                                                                          iptables -I POSTROUTING -t nat -p udp --sport 5060 -j ACCEPT
                                                                                                                                          2⤵
                                                                                                                                            PID:460

                                                                                                                                        Network

                                                                                                                                        MITRE ATT&CK Enterprise v6

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