Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/10/2022, 23:56

General

  • Target

    a471627cdd65a615ad5180ee861b0d5c231d594d385505d41709b702916165ab.exe

  • Size

    187KB

  • MD5

    652fe67abc4fc0f30fb5e6ea103aeebe

  • SHA1

    9f61655f762ab001915cbbc8a84a324f1eead7dc

  • SHA256

    a471627cdd65a615ad5180ee861b0d5c231d594d385505d41709b702916165ab

  • SHA512

    3cb8384684ef864cc2ebe5458c994e248e25cb02326cda14980f3ba72f9ecba353a00ac6c1d48d3fc6c8ab184a78017c2ad7b1ca8e702cbb84566d1c7557b186

  • SSDEEP

    3072:St1Z9xolp4D4dMz4n4N4t4R4aEIIIIzDMY5pdRvuJOtkedrfNkq35vU:e1Z9xolxMdEIIIIzL5dgOphHU

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

Signatures

  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Windows security modification 2 TTPs 7 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 11 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:768
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:328
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
        1⤵
          PID:2800
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3436
          • C:\Windows\system32\backgroundTaskHost.exe
            "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
            1⤵
              PID:4764
            • C:\Windows\system32\backgroundTaskHost.exe
              "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
              1⤵
                PID:4472
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:4680
                • C:\Windows\System32\RuntimeBroker.exe
                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                  1⤵
                    PID:3804
                  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                    1⤵
                      PID:3528
                    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                      1⤵
                        PID:3372
                      • C:\Windows\system32\DllHost.exe
                        C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                        1⤵
                          PID:3272
                        • C:\Windows\Explorer.EXE
                          C:\Windows\Explorer.EXE
                          1⤵
                            PID:2416
                            • C:\Users\Admin\AppData\Local\Temp\a471627cdd65a615ad5180ee861b0d5c231d594d385505d41709b702916165ab.exe
                              "C:\Users\Admin\AppData\Local\Temp\a471627cdd65a615ad5180ee861b0d5c231d594d385505d41709b702916165ab.exe"
                              2⤵
                              • Modifies firewall policy service
                              • UAC bypass
                              • Windows security bypass
                              • Checks computer location settings
                              • Windows security modification
                              • Checks whether UAC is enabled
                              • Enumerates connected drives
                              • Drops autorun.inf file
                              • Drops file in Program Files directory
                              • Drops file in Windows directory
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of SetWindowsHookEx
                              • Suspicious use of WriteProcessMemory
                              • System policy modification
                              PID:4048
                              • C:\Users\Admin\fuemee.exe
                                "C:\Users\Admin\fuemee.exe"
                                3⤵
                                • Modifies visiblity of hidden/system files in Explorer
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of SetWindowsHookEx
                                • Suspicious use of WriteProcessMemory
                                PID:2660
                          • C:\Windows\system32\taskhostw.exe
                            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                            1⤵
                              PID:2560
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                              1⤵
                                PID:2356
                              • C:\Windows\system32\sihost.exe
                                sihost.exe
                                1⤵
                                  PID:2348
                                • C:\Windows\system32\fontdrvhost.exe
                                  "fontdrvhost.exe"
                                  1⤵
                                    PID:776
                                  • C:\Windows\System32\RuntimeBroker.exe
                                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                                    1⤵
                                      PID:2328
                                    • C:\Windows\system32\BackgroundTransferHost.exe
                                      "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
                                      1⤵
                                        PID:4524

                                      Network

                                      MITRE ATT&CK Enterprise v6

                                      Replay Monitor

                                      Loading Replay Monitor...

                                      Downloads

                                      • C:\Users\Admin\fuemee.exe

                                        Filesize

                                        187KB

                                        MD5

                                        4ff831c16f21176c8a54791b9dcb9891

                                        SHA1

                                        faae59a5e230bdb4f0780ad376b8037566d0a435

                                        SHA256

                                        abe401bbf3304f279ea13782bd65d2d5f4d8ac416a344ce795e38405b4cb053c

                                        SHA512

                                        a645b7f12f7218634dc8951ded00e25afd3b6713a17702379dace17d2bcd28088a3921fa28ce26044007aeff925293cb4d5f0a71b3061f288bf9d9192201ae2b

                                      • C:\Users\Admin\fuemee.exe

                                        Filesize

                                        187KB

                                        MD5

                                        4ff831c16f21176c8a54791b9dcb9891

                                        SHA1

                                        faae59a5e230bdb4f0780ad376b8037566d0a435

                                        SHA256

                                        abe401bbf3304f279ea13782bd65d2d5f4d8ac416a344ce795e38405b4cb053c

                                        SHA512

                                        a645b7f12f7218634dc8951ded00e25afd3b6713a17702379dace17d2bcd28088a3921fa28ce26044007aeff925293cb4d5f0a71b3061f288bf9d9192201ae2b

                                      • memory/2660-142-0x0000000000400000-0x0000000000432000-memory.dmp

                                        Filesize

                                        200KB

                                      • memory/2660-145-0x0000000000400000-0x0000000000432000-memory.dmp

                                        Filesize

                                        200KB

                                      • memory/4048-132-0x0000000002BA0000-0x0000000003C2E000-memory.dmp

                                        Filesize

                                        16.6MB

                                      • memory/4048-135-0x0000000000400000-0x0000000000432000-memory.dmp

                                        Filesize

                                        200KB

                                      • memory/4048-136-0x0000000002BA0000-0x0000000003C2E000-memory.dmp

                                        Filesize

                                        16.6MB

                                      • memory/4048-143-0x0000000002BA0000-0x0000000003C2E000-memory.dmp

                                        Filesize

                                        16.6MB

                                      • memory/4048-144-0x0000000000400000-0x0000000000432000-memory.dmp

                                        Filesize

                                        200KB