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Analysis

  • max time kernel
    151s
  • max time network
    128s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20231222-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20231222-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    22/12/2023, 17:20

General

  • Target

    ff3a8d23aab424bfd9db6505b77ab05d

  • Size

    1.1MB

  • MD5

    ff3a8d23aab424bfd9db6505b77ab05d

  • SHA1

    3228c70108778f9cd58237141652ec4ad2b01b33

  • SHA256

    2c6351a60f83ef185be9991b8ebfc11af7c29c59572a0b2af2471b10392614d7

  • SHA512

    9dfdab046b8d9e079115ad14c1b000ee7a9df5d7e0b8a09c5d7b4f3eb88117f79652f4a5582e69b1e9e2983564253005fdd82748e03722ccbafe06799d8fe9bd

  • SSDEEP

    24576:4vRE7caCfKGPqVEDNLFxKsfawI+gIGYuuCol7r:4vREKfPqVE5jKsfawRHGVo7r

Malware Config

Signatures

  • MrBlack Trojan

    IoT botnet which infects routers to be used for DDoS attacks.

  • MrBlack trojan 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks CPU configuration 1 TTPs 1 IoCs

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

  • Modifies init.d 1 TTPs 2 IoCs

    Adds/modifies system service, likely for persistence.

  • Write file to user bin folder 1 TTPs 7 IoCs
  • Writes file to system bin folder 1 TTPs 1 IoCs
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Reads runtime system information 15 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 4 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/ff3a8d23aab424bfd9db6505b77ab05d
    /tmp/ff3a8d23aab424bfd9db6505b77ab05d
    1⤵
      PID:1590
    • /bin/sh
      sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
      1⤵
        PID:1603
        • /bin/ln
          ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
          2⤵
            PID:1604
        • /bin/sh
          sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
          1⤵
            PID:1605
            • /bin/ln
              ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
              2⤵
                PID:1606
            • /bin/sh
              sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
              1⤵
                PID:1607
                • /bin/ln
                  ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
                  2⤵
                    PID:1608
                • /bin/sh
                  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
                  1⤵
                    PID:1609
                    • /bin/ln
                      ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
                      2⤵
                        PID:1610
                    • /bin/sh
                      sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
                      1⤵
                        PID:1611
                        • /bin/ln
                          ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
                          2⤵
                            PID:1612
                        • /bin/sh
                          sh -c "mkdir -p /usr/bin/bsd-port"
                          1⤵
                            PID:1613
                            • /bin/mkdir
                              mkdir -p /usr/bin/bsd-port
                              2⤵
                              • Reads runtime system information
                              PID:1614
                          • /bin/sh
                            sh -c "cp -f /tmp/ff3a8d23aab424bfd9db6505b77ab05d /usr/bin/bsd-port/getty"
                            1⤵
                              PID:1615
                              • /bin/cp
                                cp -f /tmp/ff3a8d23aab424bfd9db6505b77ab05d /usr/bin/bsd-port/getty
                                2⤵
                                • Write file to user bin folder
                                • Reads runtime system information
                                PID:1616
                            • /bin/sh
                              sh -c /usr/bin/bsd-port/getty
                              1⤵
                                PID:1618
                                • /usr/bin/bsd-port/getty
                                  /usr/bin/bsd-port/getty
                                  2⤵
                                  • Executes dropped EXE
                                  PID:1619
                              • /bin/sh
                                sh -c "mkdir -p /usr/bin"
                                1⤵
                                  PID:1621
                                  • /bin/mkdir
                                    mkdir -p /usr/bin
                                    2⤵
                                    • Reads runtime system information
                                    PID:1622
                                • /bin/sh
                                  sh -c "cp -f /tmp/ff3a8d23aab424bfd9db6505b77ab05d /usr/bin/.sshd"
                                  1⤵
                                    PID:1623
                                    • /bin/cp
                                      cp -f /tmp/ff3a8d23aab424bfd9db6505b77ab05d /usr/bin/.sshd
                                      2⤵
                                      • Write file to user bin folder
                                      • Reads runtime system information
                                      PID:1624
                                  • /bin/sh
                                    sh -c /usr/bin/.sshd
                                    1⤵
                                      PID:1626
                                      • /usr/bin/.sshd
                                        /usr/bin/.sshd
                                        2⤵
                                        • Executes dropped EXE
                                        PID:1627
                                    • /bin/sh
                                      sh -c "insmod /usr/lib/xpacket.ko"
                                      1⤵
                                        PID:1629
                                        • /sbin/insmod
                                          insmod /usr/lib/xpacket.ko
                                          2⤵
                                          • Reads runtime system information
                                          PID:1630
                                      • /bin/sh
                                        sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
                                        1⤵
                                          PID:1634
                                          • /bin/ln
                                            ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
                                            2⤵
                                              PID:1635
                                          • /bin/sh
                                            sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
                                            1⤵
                                              PID:1636
                                              • /bin/ln
                                                ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
                                                2⤵
                                                  PID:1637
                                              • /bin/sh
                                                sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
                                                1⤵
                                                  PID:1639
                                                  • /bin/ln
                                                    ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
                                                    2⤵
                                                      PID:1641
                                                  • /bin/sh
                                                    sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
                                                    1⤵
                                                      PID:1643
                                                      • /bin/ln
                                                        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
                                                        2⤵
                                                          PID:1644
                                                      • /bin/sh
                                                        sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
                                                        1⤵
                                                          PID:1646
                                                          • /bin/ln
                                                            ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
                                                            2⤵
                                                              PID:1647
                                                          • /bin/sh
                                                            sh -c "mkdir -p /usr/bin/dpkgd"
                                                            1⤵
                                                              PID:1648
                                                              • /bin/mkdir
                                                                mkdir -p /usr/bin/dpkgd
                                                                2⤵
                                                                • Reads runtime system information
                                                                PID:1649
                                                            • /bin/sh
                                                              sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
                                                              1⤵
                                                                PID:1650
                                                                • /bin/cp
                                                                  cp -f /bin/ps /usr/bin/dpkgd/ps
                                                                  2⤵
                                                                  • Write file to user bin folder
                                                                  • Reads runtime system information
                                                                  PID:1651
                                                              • /bin/sh
                                                                sh -c "mkdir -p /bin"
                                                                1⤵
                                                                  PID:1652
                                                                  • /bin/mkdir
                                                                    mkdir -p /bin
                                                                    2⤵
                                                                    • Reads runtime system information
                                                                    PID:1653
                                                                • /bin/sh
                                                                  sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
                                                                  1⤵
                                                                    PID:1654
                                                                    • /bin/cp
                                                                      cp -f /usr/bin/bsd-port/getty /bin/ps
                                                                      2⤵
                                                                      • Writes file to system bin folder
                                                                      • Reads runtime system information
                                                                      PID:1655
                                                                  • /bin/sh
                                                                    sh -c "chmod 0755 /bin/ps"
                                                                    1⤵
                                                                      PID:1656
                                                                      • /bin/chmod
                                                                        chmod 0755 /bin/ps
                                                                        2⤵
                                                                          PID:1657
                                                                      • /bin/sh
                                                                        sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
                                                                        1⤵
                                                                          PID:1658
                                                                          • /bin/cp
                                                                            cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
                                                                            2⤵
                                                                            • Write file to user bin folder
                                                                            • Reads runtime system information
                                                                            PID:1659
                                                                        • /bin/sh
                                                                          sh -c "mkdir -p /usr/bin"
                                                                          1⤵
                                                                            PID:1660
                                                                            • /bin/mkdir
                                                                              mkdir -p /usr/bin
                                                                              2⤵
                                                                              • Reads runtime system information
                                                                              PID:1661
                                                                          • /bin/sh
                                                                            sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
                                                                            1⤵
                                                                              PID:1662
                                                                              • /bin/cp
                                                                                cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
                                                                                2⤵
                                                                                • Write file to user bin folder
                                                                                • Reads runtime system information
                                                                                PID:1663
                                                                            • /bin/sh
                                                                              sh -c "chmod 0755 /usr/bin/lsof"
                                                                              1⤵
                                                                                PID:1665
                                                                                • /bin/chmod
                                                                                  chmod 0755 /usr/bin/lsof
                                                                                  2⤵
                                                                                    PID:1666
                                                                                • /bin/sh
                                                                                  sh -c "insmod /usr/lib/xpacket.ko"
                                                                                  1⤵
                                                                                    PID:1667
                                                                                    • /sbin/insmod
                                                                                      insmod /usr/lib/xpacket.ko
                                                                                      2⤵
                                                                                      • Reads runtime system information
                                                                                      PID:1668

                                                                                  Network

                                                                                  MITRE ATT&CK Enterprise v15

                                                                                  Replay Monitor

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                                                                                  Downloads

                                                                                  • /etc/init.d/DbSecuritySpt

                                                                                    Filesize

                                                                                    50B

                                                                                    MD5

                                                                                    5bfd864765db4e2b6882f94a0cdda2d6

                                                                                    SHA1

                                                                                    4256f5f0bc3614d1beb7d446a3df23b67f1d0db9

                                                                                    SHA256

                                                                                    ba3032a9ce252d30bd5c8bf30d927a38bcb0573867b42d87038b6bfd12580d52

                                                                                    SHA512

                                                                                    633011ab2438f2bd4a5fa68662ec4a03e288dfff3c674a10ed0b935080e9e39f1fdcf5b880ed13db5f593afba2d855f3f4e347f5843680bb2406dd8f012c91d8

                                                                                  • /etc/init.d/selinux

                                                                                    Filesize

                                                                                    36B

                                                                                    MD5

                                                                                    993cc15058142d96c3daf7852c3d5ee8

                                                                                    SHA1

                                                                                    0950b8b391b04dd3895ea33cd3141543ebd2525d

                                                                                    SHA256

                                                                                    8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

                                                                                    SHA512

                                                                                    0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

                                                                                  • /tmp/gates.lock

                                                                                    Filesize

                                                                                    4B

                                                                                    MD5

                                                                                    5129a5ddcd0dcd755232baa04c231698

                                                                                    SHA1

                                                                                    b2a3625de074749ed626d2c2fdf5342d7757a850

                                                                                    SHA256

                                                                                    e52522a505f68250e81747aa5386c5c60196c1680f1c89762ab1ab0fbaae39b8

                                                                                    SHA512

                                                                                    27f36a56ba7f81569a7edcada4b457648cef41168a85cadf11c6e649295b110569e060047c624376a3dd8372edf153ae15c954cce7e308e8f826884a707d12c9

                                                                                  • /tmp/moni.lock

                                                                                    Filesize

                                                                                    4B

                                                                                    MD5

                                                                                    efb76cff97aaf057654ef2f38cd77d73

                                                                                    SHA1

                                                                                    b26ad862c55257cb44c33db294f559908abaaa39

                                                                                    SHA256

                                                                                    e6c3b6f798b0e8d63406a281cf31ed72a005f9aaba8970ba3d008f2254001146

                                                                                    SHA512

                                                                                    532a398d6f754d66c37bf68c6eee96c46e7448062e4bd13c2fde21257bf282734c3f624431acf48ee35af53a94e216861c2a6928b95f2d72d61c3e3661b3ffb1

                                                                                  • /tmp/notify.file

                                                                                    Filesize

                                                                                    37B

                                                                                    MD5

                                                                                    8463c17e142a2f74d94f9d93e512276e

                                                                                    SHA1

                                                                                    d413889aad0457c20bb8dde856ce40158cd10122

                                                                                    SHA256

                                                                                    45b052fcef08c2fca65644137922633ede8af0888a324d709ece974fc8b3b533

                                                                                    SHA512

                                                                                    8aa1b73c06aeb377e425cc41eea3665a629347c458f624a9636df800996fa2295a252a8184161ade23daca5b533107f0ede079a7fbd198448702549c41e7b398

                                                                                  • /usr/bin/bsd-port/getty

                                                                                    Filesize

                                                                                    1.1MB

                                                                                    MD5

                                                                                    ff3a8d23aab424bfd9db6505b77ab05d

                                                                                    SHA1

                                                                                    3228c70108778f9cd58237141652ec4ad2b01b33

                                                                                    SHA256

                                                                                    2c6351a60f83ef185be9991b8ebfc11af7c29c59572a0b2af2471b10392614d7

                                                                                    SHA512

                                                                                    9dfdab046b8d9e079115ad14c1b000ee7a9df5d7e0b8a09c5d7b4f3eb88117f79652f4a5582e69b1e9e2983564253005fdd82748e03722ccbafe06799d8fe9bd

                                                                                  • /usr/bin/dpkgd/lsof

                                                                                    Filesize

                                                                                    159KB

                                                                                    MD5

                                                                                    e093dc78225e2a0a25e3b137c1c1e442

                                                                                    SHA1

                                                                                    c29497cfaae729eb576875e4fdfa400640ab16be

                                                                                    SHA256

                                                                                    1190f4dbc7be174de8fd4096c9bf7a28eebfac937d308b7cc533be4a1240d26e

                                                                                    SHA512

                                                                                    fe1cc7a65327732eaaee89f427c10239ba822430e34177842f4681068d78d404b1830d808a2a71b1efcc5f126c6d8c053512237421173aaa150e215a672da6f0

                                                                                  • /usr/bin/dpkgd/ps

                                                                                    Filesize

                                                                                    130KB

                                                                                    MD5

                                                                                    558edc26f8a38fa9788220b9af8a73e7

                                                                                    SHA1

                                                                                    3024d44e580e9c67f32f6c585d50e2a6cc9a7cac

                                                                                    SHA256

                                                                                    b76435c80333d2c1fd18e0e7682f1c9dfb5da8d507e93e3c416f54b481c428d5

                                                                                    SHA512

                                                                                    edaa425b441044f015e8f68fffa1664e42372d00dd0e7b0924d24ce947aa8e5f96b3bdc326fa2f8b978e3fcf638a1ceca45a223735db73f1607df66990feb56f