Analysis

  • max time kernel
    104s
  • max time network
    131s
  • platform
    ubuntu-24.04_amd64
  • resource
    ubuntu2404-amd64-20240523-en
  • resource tags

    arch:amd64arch:i386image:ubuntu2404-amd64-20240523-enkernel:6.8.0-31-genericlocale:en-usos:ubuntu-24.04-amd64system
  • submitted
    26/02/2025, 16:51

General

  • Target

    skid.x86.elf

  • Size

    98KB

  • MD5

    85f9548e1bd7afd130a1e2b851b41da8

  • SHA1

    75c285684ec3964eb9bf3f4122e48c38f0ae11b8

  • SHA256

    c8e23dad72cec959fc3a9fd530bf839ca04bb3f7e433364e5aabf62160ee4da9

  • SHA512

    3f072cbf2ce940eecccb22eecfded787fd29f7a0828c6732c679a1769399ca7611d2ea201cbf37994efa40b0a2136aba50c8d760ed1e4f283a64f173ba23a576

  • SSDEEP

    3072:62RuRkQT3v9EbYBo7sphanvn00Cmr5um2XFYZA0e:6ISVv9cgphanvn00Cmr5um2XFYZA0e

Malware Config

Extracted

Family

gafgyt

C2

185.224.0.18:1111

Signatures

  • Detected Gafgyt variant 2 IoCs
  • Gafgyt family
  • Gafgyt/Bashlite

    IoT botnet with numerous variants first seen in 2014.

  • Executes dropped EXE 44 IoCs
  • Creates/modifies Cron job 1 TTPs 44 IoCs

    Cron allows running tasks on a schedule, and is commonly used for malware persistence.

  • Writes file to system bin folder 1 IoCs
  • Reads runtime system information 45 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 45 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/skid.x86.elf
    /tmp/skid.x86.elf
    1⤵
    • Executes dropped EXE
    • Creates/modifies Cron job
    • Writes file to system bin folder
    • Reads runtime system information
    • Writes file to tmp directory
    PID:2814
    • /tmp/fileVckyP2
      /tmp/skid.x86.elf
      2⤵
      • Executes dropped EXE
      • Creates/modifies Cron job
      • Reads runtime system information
      • Writes file to tmp directory
      PID:2830
      • /tmp/filet7Ouhu
        /tmp/skid.x86.elf
        3⤵
        • Executes dropped EXE
        • Creates/modifies Cron job
        • Reads runtime system information
        • Writes file to tmp directory
        PID:2831
        • /tmp/fileBB2ytN
          /tmp/skid.x86.elf
          4⤵
          • Executes dropped EXE
          • Creates/modifies Cron job
          • Reads runtime system information
          • Writes file to tmp directory
          PID:2832
          • /tmp/fileSC27kp
            /tmp/skid.x86.elf
            5⤵
            • Executes dropped EXE
            • Creates/modifies Cron job
            • Reads runtime system information
            • Writes file to tmp directory
            PID:2833
            • /tmp/fileY51Jhz
              /tmp/skid.x86.elf
              6⤵
              • Executes dropped EXE
              • Creates/modifies Cron job
              • Reads runtime system information
              • Writes file to tmp directory
              PID:2834
              • /tmp/filecAFQnK
                /tmp/skid.x86.elf
                7⤵
                • Executes dropped EXE
                • Creates/modifies Cron job
                • Reads runtime system information
                • Writes file to tmp directory
                PID:2835
                • /tmp/fileE7vJua
                  /tmp/skid.x86.elf
                  8⤵
                  • Executes dropped EXE
                  • Creates/modifies Cron job
                  • Reads runtime system information
                  • Writes file to tmp directory
                  PID:2848
                  • /tmp/fileepnzAc
                    /tmp/skid.x86.elf
                    9⤵
                    • Executes dropped EXE
                    • Creates/modifies Cron job
                    • Reads runtime system information
                    • Writes file to tmp directory
                    PID:2855
                    • /tmp/fileVwpRk0
                      /tmp/skid.x86.elf
                      10⤵
                      • Executes dropped EXE
                      • Creates/modifies Cron job
                      • Reads runtime system information
                      • Writes file to tmp directory
                      PID:2856
                      • /tmp/fileYx4MTJ
                        /tmp/skid.x86.elf
                        11⤵
                        • Executes dropped EXE
                        • Creates/modifies Cron job
                        • Reads runtime system information
                        • Writes file to tmp directory
                        PID:2857
                        • /tmp/fileqbAqp9
                          /tmp/skid.x86.elf
                          12⤵
                          • Executes dropped EXE
                          • Creates/modifies Cron job
                          • Reads runtime system information
                          • Writes file to tmp directory
                          PID:2858
                          • /tmp/fileMqIeU9
                            /tmp/skid.x86.elf
                            13⤵
                            • Executes dropped EXE
                            • Creates/modifies Cron job
                            • Reads runtime system information
                            • Writes file to tmp directory
                            PID:2862
                            • /tmp/fileRvxPcA
                              /tmp/skid.x86.elf
                              14⤵
                              • Executes dropped EXE
                              • Creates/modifies Cron job
                              • Reads runtime system information
                              • Writes file to tmp directory
                              PID:2863
                              • /tmp/filekj6LwO
                                /tmp/skid.x86.elf
                                15⤵
                                • Executes dropped EXE
                                • Creates/modifies Cron job
                                • Reads runtime system information
                                • Writes file to tmp directory
                                PID:2864
                                • /tmp/fileXKnMOc
                                  /tmp/skid.x86.elf
                                  16⤵
                                  • Executes dropped EXE
                                  • Creates/modifies Cron job
                                  • Reads runtime system information
                                  • Writes file to tmp directory
                                  PID:2865
                                  • /tmp/fileFUWXG9
                                    /tmp/skid.x86.elf
                                    17⤵
                                    • Executes dropped EXE
                                    • Creates/modifies Cron job
                                    • Reads runtime system information
                                    • Writes file to tmp directory
                                    PID:2866
                                    • /tmp/fileLU6SSK
                                      /tmp/skid.x86.elf
                                      18⤵
                                      • Executes dropped EXE
                                      • Creates/modifies Cron job
                                      • Reads runtime system information
                                      • Writes file to tmp directory
                                      PID:2867
                                      • /tmp/fileDhM2xj
                                        /tmp/skid.x86.elf
                                        19⤵
                                        • Executes dropped EXE
                                        • Creates/modifies Cron job
                                        • Reads runtime system information
                                        • Writes file to tmp directory
                                        PID:2868
                                        • /tmp/filetN2tg2
                                          /tmp/skid.x86.elf
                                          20⤵
                                          • Executes dropped EXE
                                          • Creates/modifies Cron job
                                          • Reads runtime system information
                                          • Writes file to tmp directory
                                          PID:2869
                                          • /tmp/filemDNmyQ
                                            /tmp/skid.x86.elf
                                            21⤵
                                            • Executes dropped EXE
                                            • Creates/modifies Cron job
                                            • Reads runtime system information
                                            • Writes file to tmp directory
                                            PID:2870
                                            • /tmp/fileGVNlq4
                                              /tmp/skid.x86.elf
                                              22⤵
                                              • Executes dropped EXE
                                              • Creates/modifies Cron job
                                              • Reads runtime system information
                                              • Writes file to tmp directory
                                              PID:2871
                                              • /tmp/filejIfae9
                                                /tmp/skid.x86.elf
                                                23⤵
                                                • Executes dropped EXE
                                                • Creates/modifies Cron job
                                                • Reads runtime system information
                                                • Writes file to tmp directory
                                                PID:2872
                                                • /tmp/fileIgnCPJ
                                                  /tmp/skid.x86.elf
                                                  24⤵
                                                  • Executes dropped EXE
                                                  • Creates/modifies Cron job
                                                  • Reads runtime system information
                                                  • Writes file to tmp directory
                                                  PID:2873
                                                  • /tmp/fileXJFP1u
                                                    /tmp/skid.x86.elf
                                                    25⤵
                                                    • Executes dropped EXE
                                                    • Creates/modifies Cron job
                                                    • Reads runtime system information
                                                    • Writes file to tmp directory
                                                    PID:2874
                                                    • /tmp/fileTpiUwP
                                                      /tmp/skid.x86.elf
                                                      26⤵
                                                      • Executes dropped EXE
                                                      • Creates/modifies Cron job
                                                      • Reads runtime system information
                                                      • Writes file to tmp directory
                                                      PID:2875
                                                      • /tmp/fileRYtImE
                                                        /tmp/skid.x86.elf
                                                        27⤵
                                                        • Executes dropped EXE
                                                        • Creates/modifies Cron job
                                                        • Reads runtime system information
                                                        • Writes file to tmp directory
                                                        PID:2876
                                                        • /tmp/filea7gg4z
                                                          /tmp/skid.x86.elf
                                                          28⤵
                                                          • Executes dropped EXE
                                                          • Creates/modifies Cron job
                                                          • Reads runtime system information
                                                          • Writes file to tmp directory
                                                          PID:2877
                                                          • /tmp/fileAisBr9
                                                            /tmp/skid.x86.elf
                                                            29⤵
                                                            • Executes dropped EXE
                                                            • Creates/modifies Cron job
                                                            • Reads runtime system information
                                                            • Writes file to tmp directory
                                                            PID:2878
                                                            • /tmp/filettAPSu
                                                              /tmp/skid.x86.elf
                                                              30⤵
                                                              • Executes dropped EXE
                                                              • Creates/modifies Cron job
                                                              • Reads runtime system information
                                                              • Writes file to tmp directory
                                                              PID:2879
                                                              • /tmp/fileNkgdcP
                                                                /tmp/skid.x86.elf
                                                                31⤵
                                                                • Executes dropped EXE
                                                                • Creates/modifies Cron job
                                                                • Reads runtime system information
                                                                • Writes file to tmp directory
                                                                PID:2880
                                                                • /tmp/filerEoQJA
                                                                  /tmp/skid.x86.elf
                                                                  32⤵
                                                                  • Executes dropped EXE
                                                                  • Creates/modifies Cron job
                                                                  • Reads runtime system information
                                                                  • Writes file to tmp directory
                                                                  PID:2881
                                                                  • /tmp/filelkRRWz
                                                                    /tmp/skid.x86.elf
                                                                    33⤵
                                                                    • Executes dropped EXE
                                                                    • Creates/modifies Cron job
                                                                    • Reads runtime system information
                                                                    • Writes file to tmp directory
                                                                    PID:2882
                                                                    • /tmp/fileaFZH46
                                                                      /tmp/skid.x86.elf
                                                                      34⤵
                                                                      • Executes dropped EXE
                                                                      • Creates/modifies Cron job
                                                                      • Reads runtime system information
                                                                      • Writes file to tmp directory
                                                                      PID:2883
                                                                      • /tmp/fileCzeSf1
                                                                        /tmp/skid.x86.elf
                                                                        35⤵
                                                                        • Executes dropped EXE
                                                                        • Creates/modifies Cron job
                                                                        • Reads runtime system information
                                                                        • Writes file to tmp directory
                                                                        PID:2884
                                                                        • /tmp/filedMIaS3
                                                                          /tmp/skid.x86.elf
                                                                          36⤵
                                                                          • Executes dropped EXE
                                                                          • Creates/modifies Cron job
                                                                          • Reads runtime system information
                                                                          • Writes file to tmp directory
                                                                          PID:2885
                                                                          • /tmp/fileOeibWa
                                                                            /tmp/skid.x86.elf
                                                                            37⤵
                                                                            • Executes dropped EXE
                                                                            • Creates/modifies Cron job
                                                                            • Reads runtime system information
                                                                            • Writes file to tmp directory
                                                                            PID:2886
                                                                            • /tmp/filenmKmYv
                                                                              /tmp/skid.x86.elf
                                                                              38⤵
                                                                              • Executes dropped EXE
                                                                              • Creates/modifies Cron job
                                                                              • Reads runtime system information
                                                                              • Writes file to tmp directory
                                                                              PID:2887
                                                                              • /tmp/fileLX9dMq
                                                                                /tmp/skid.x86.elf
                                                                                39⤵
                                                                                • Executes dropped EXE
                                                                                • Creates/modifies Cron job
                                                                                • Reads runtime system information
                                                                                • Writes file to tmp directory
                                                                                PID:2888
                                                                                • /tmp/filexnhTOE
                                                                                  /tmp/skid.x86.elf
                                                                                  40⤵
                                                                                  • Executes dropped EXE
                                                                                  • Creates/modifies Cron job
                                                                                  • Reads runtime system information
                                                                                  • Writes file to tmp directory
                                                                                  PID:2889
                                                                                  • /tmp/fileAHxTRP
                                                                                    /tmp/skid.x86.elf
                                                                                    41⤵
                                                                                    • Executes dropped EXE
                                                                                    • Creates/modifies Cron job
                                                                                    • Reads runtime system information
                                                                                    • Writes file to tmp directory
                                                                                    PID:2890
                                                                                    • /tmp/file3JRu7u
                                                                                      /tmp/skid.x86.elf
                                                                                      42⤵
                                                                                      • Executes dropped EXE
                                                                                      • Creates/modifies Cron job
                                                                                      • Reads runtime system information
                                                                                      • Writes file to tmp directory
                                                                                      PID:2891
                                                                                      • /tmp/file6zG7XP
                                                                                        /tmp/skid.x86.elf
                                                                                        43⤵
                                                                                        • Executes dropped EXE
                                                                                        • Creates/modifies Cron job
                                                                                        • Reads runtime system information
                                                                                        • Writes file to tmp directory
                                                                                        PID:2892
                                                                                        • /tmp/fileJfnFMB
                                                                                          /tmp/skid.x86.elf
                                                                                          44⤵
                                                                                          • Executes dropped EXE
                                                                                          • Creates/modifies Cron job
                                                                                          • Reads runtime system information
                                                                                          • Writes file to tmp directory
                                                                                          PID:2893
                                                                                          • /tmp/fileFnob76
                                                                                            /tmp/skid.x86.elf
                                                                                            45⤵
                                                                                            • Reads runtime system information
                                                                                            • Writes file to tmp directory
                                                                                            PID:2894

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • /etc/cron.hourly/0

    Filesize

    92B

    MD5

    3f006f7f81fc17be7f4a0d3da0fad5de

    SHA1

    97a94d3d0654c6551057af3809b52572bd7f9f5d

    SHA256

    982f9e0f089b91ba79df723435099df15c72e1201a45010ee60226ab136c93bf

    SHA512

    97d2ac0057427b940ada7c0fc805c1966e2535c3c3767ca85fef4a7e0fdc9d4ef9eb133530408b1e439df067881cb317e948ad9bfd487e958a04c97d9db978e0

  • /tmp/fileVckyP2

    Filesize

    90KB

    MD5

    4bc8168b8c378af3bfae2f24d97b9b6c

    SHA1

    fd44443b2cd003a2f730f1dc7a9d6fb0e5839eab

    SHA256

    6a55b599795d69cb14091be61447efef93b8b809904a2955f893c4424158b74e

    SHA512

    1c69ba6d6f12cf52bcfa0e2df1845a4ef29a5cb488e56869350ef78ad3b18cd7ac2a3dce6c7701c03d7a2aebb3f59a1977b8191fe655db847d831b160b6338bf

  • /tmp/fileVckyP2

    Filesize

    98KB

    MD5

    85f9548e1bd7afd130a1e2b851b41da8

    SHA1

    75c285684ec3964eb9bf3f4122e48c38f0ae11b8

    SHA256

    c8e23dad72cec959fc3a9fd530bf839ca04bb3f7e433364e5aabf62160ee4da9

    SHA512

    3f072cbf2ce940eecccb22eecfded787fd29f7a0828c6732c679a1769399ca7611d2ea201cbf37994efa40b0a2136aba50c8d760ed1e4f283a64f173ba23a576