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Analysis

  • max time kernel
    147s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/04/2024, 02:34

General

  • Target

    cb3dbf77aa358ff3cc291a3fe61f6f637ff883dd98a46971af9a5080ad4152e5.dll

  • Size

    120KB

  • MD5

    b27012ec736fa90fc93e6c0f2d192c63

  • SHA1

    cfebed27985c679b099b991b8f18fd3b8483f05b

  • SHA256

    cb3dbf77aa358ff3cc291a3fe61f6f637ff883dd98a46971af9a5080ad4152e5

  • SHA512

    8b8bb31bca9cfef8c47e19722f8e217e45bb12d78a9b0a0cb97f073decbcd9ad7f251003129f087d98934704deb2baef1ca2b8f00ac40331c176a726fd33d641

  • SSDEEP

    1536:HcuZf18X/OOwpQm1J5oidOyjbN4s5wk2GcobqKZrOxXPBwfMcQ2UUY3vcpVXfy5O:8uf5/B5oidv20wkSnmrOxpwfQzUk6vy

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

Signatures

  • Modifies firewall policy service 2 TTPs 3 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
  • Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 21 IoCs
  • UPX dump on OEP (original entry point) 25 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 21 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 5 IoCs

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

  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:784
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:792
      • C:\Windows\system32\dwm.exe
        "dwm.exe"
        1⤵
          PID:376
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:2756
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
            1⤵
              PID:2824
            • C:\Windows\system32\taskhostw.exe
              taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
              1⤵
                PID:2976
              • C:\Windows\Explorer.EXE
                C:\Windows\Explorer.EXE
                1⤵
                  PID:3392
                  • C:\Windows\system32\rundll32.exe
                    rundll32.exe C:\Users\Admin\AppData\Local\Temp\cb3dbf77aa358ff3cc291a3fe61f6f637ff883dd98a46971af9a5080ad4152e5.dll,#1
                    2⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2684
                    • C:\Windows\SysWOW64\rundll32.exe
                      rundll32.exe C:\Users\Admin\AppData\Local\Temp\cb3dbf77aa358ff3cc291a3fe61f6f637ff883dd98a46971af9a5080ad4152e5.dll,#1
                      3⤵
                      • Suspicious use of WriteProcessMemory
                      PID:2848
                      • C:\Users\Admin\AppData\Local\Temp\e5777df.exe
                        C:\Users\Admin\AppData\Local\Temp\e5777df.exe
                        4⤵
                        • Modifies firewall policy service
                        • UAC bypass
                        • Windows security bypass
                        • Executes dropped EXE
                        • Windows security modification
                        • Checks whether UAC is enabled
                        • Enumerates connected drives
                        • Drops file in Windows directory
                        • Suspicious behavior: EnumeratesProcesses
                        • Suspicious use of AdjustPrivilegeToken
                        • Suspicious use of WriteProcessMemory
                        • System policy modification
                        PID:2672
                      • C:\Users\Admin\AppData\Local\Temp\e577c54.exe
                        C:\Users\Admin\AppData\Local\Temp\e577c54.exe
                        4⤵
                        • Executes dropped EXE
                        PID:3772
                      • C:\Users\Admin\AppData\Local\Temp\e579645.exe
                        C:\Users\Admin\AppData\Local\Temp\e579645.exe
                        4⤵
                        • Executes dropped EXE
                        PID:4908
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                  1⤵
                    PID:3580
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3764
                    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                      1⤵
                        PID:3896
                      • C:\Windows\System32\RuntimeBroker.exe
                        C:\Windows\System32\RuntimeBroker.exe -Embedding
                        1⤵
                          PID:3992
                        • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                          "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                          1⤵
                            PID:4068
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            1⤵
                              PID:4124
                            • C:\Windows\System32\RuntimeBroker.exe
                              C:\Windows\System32\RuntimeBroker.exe -Embedding
                              1⤵
                                PID:2236
                              • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe
                                "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca
                                1⤵
                                  PID:4984
                                • C:\Windows\system32\backgroundTaskHost.exe
                                  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppX53ypgrj20bgndg05hj3tc7z654myszwp.mca
                                  1⤵
                                    PID:4248
                                  • C:\Windows\system32\backgroundTaskHost.exe
                                    "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                                    1⤵
                                      PID:4636
                                    • C:\Windows\system32\backgroundTaskHost.exe
                                      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                      1⤵
                                        PID:2212
                                      • C:\Windows\system32\BackgroundTaskHost.exe
                                        "C:\Windows\system32\BackgroundTaskHost.exe" -ServerName:BackgroundTaskHost.WebAccountProvider
                                        1⤵
                                          PID:1960
                                        • C:\Windows\System32\RuntimeBroker.exe
                                          C:\Windows\System32\RuntimeBroker.exe -Embedding
                                          1⤵
                                            PID:3176
                                          • C:\Windows\System32\RuntimeBroker.exe
                                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                                            1⤵
                                              PID:4088
                                            • C:\Windows\System32\wuapihost.exe
                                              C:\Windows\System32\wuapihost.exe -Embedding
                                              1⤵
                                                PID:4256

                                              Network

                                              MITRE ATT&CK Enterprise v15

                                              Replay Monitor

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                                              Downloads

                                              • C:\Users\Admin\AppData\Local\Temp\e5777df.exe

                                                Filesize

                                                97KB

                                                MD5

                                                89b54e407fda0baa9707c8745ea9b45a

                                                SHA1

                                                5ab37cdfd4b81cc23bc7451de44f0489a0e1e552

                                                SHA256

                                                fe2a57f8f63deb51c48c345355f36a0ada3ae7b16fbedef19d2d9fa0248b9777

                                                SHA512

                                                21817d154528e997660d782d6bc23096b8053bec58eafd066e83ef37bfa0a9ac9f1822103347cf03f481df57fa5315a817127758dbe2b3edf702ed4a47377d39

                                              • memory/2672-35-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-29-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-75-0x0000000003520000-0x0000000003522000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/2672-8-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-9-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-82-0x0000000000400000-0x0000000000412000-memory.dmp

                                                Filesize

                                                72KB

                                              • memory/2672-64-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-20-0x0000000003520000-0x0000000003522000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/2672-11-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-17-0x0000000003BF0000-0x0000000003BF1000-memory.dmp

                                                Filesize

                                                4KB

                                              • memory/2672-22-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-36-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-28-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-56-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-30-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-31-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-32-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-33-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-34-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-61-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-4-0x0000000000400000-0x0000000000412000-memory.dmp

                                                Filesize

                                                72KB

                                              • memory/2672-59-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-6-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-45-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-47-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2672-57-0x0000000000830000-0x00000000018EA000-memory.dmp

                                                Filesize

                                                16.7MB

                                              • memory/2848-10-0x0000000000750000-0x0000000000752000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/2848-13-0x0000000000750000-0x0000000000752000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/2848-12-0x0000000000EB0000-0x0000000000EB1000-memory.dmp

                                                Filesize

                                                4KB

                                              • memory/2848-0-0x0000000010000000-0x0000000010020000-memory.dmp

                                                Filesize

                                                128KB

                                              • memory/2848-41-0x0000000000750000-0x0000000000752000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/3772-49-0x00000000001F0000-0x00000000001F1000-memory.dmp

                                                Filesize

                                                4KB

                                              • memory/3772-50-0x00000000001E0000-0x00000000001E2000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/3772-52-0x00000000001E0000-0x00000000001E2000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/3772-85-0x0000000000400000-0x0000000000412000-memory.dmp

                                                Filesize

                                                72KB

                                              • memory/3772-81-0x00000000001E0000-0x00000000001E2000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/4908-54-0x00000000001E0000-0x00000000001E2000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/4908-55-0x00000000001E0000-0x00000000001E2000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/4908-53-0x00000000001F0000-0x00000000001F1000-memory.dmp

                                                Filesize

                                                4KB

                                              • memory/4908-44-0x0000000000400000-0x0000000000412000-memory.dmp

                                                Filesize

                                                72KB

                                              • memory/4908-86-0x00000000001E0000-0x00000000001E2000-memory.dmp

                                                Filesize

                                                8KB

                                              • memory/4908-89-0x0000000000400000-0x0000000000412000-memory.dmp

                                                Filesize

                                                72KB