Analysis

  • max time kernel
    104s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/02/2024, 08:51

General

  • Target

    Packed.Win32.Salpack.dll

  • Size

    120KB

  • MD5

    fb8b3e5be92b6d3939a2481735fe6d51

  • SHA1

    0212fcc74a64fb93e3c3b5481ed5595259b67b70

  • SHA256

    e438d0a0631047f8f62fa69bd4dc07f6c4f0f1cac554b7ba6d166c0d5cf6f2e8

  • SHA512

    22a983cb6af1fd01cc012ba76747629b4a037ab2c2d720babd22af1fc92e42a131f57532aa3449ce0ad5f0d4e8ebf75d94dc438ecac3c41e327caf7d632e6a0f

  • SSDEEP

    1536:wOJRalekPiLKM+88m+xJMVJxKgJvhmnJTPb8QIPal60GkOPfOQZ0pYxJDac3280P:VapKw924noBThzJDZN0P

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 6 IoCs
  • Sality

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

  • UAC bypass 3 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 12 IoCs
  • Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 30 IoCs
  • UPX dump on OEP (original entry point) 35 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 30 IoCs

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

  • Windows security modification 2 TTPs 14 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Drops file in Windows directory 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:776
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:320
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        1⤵
          PID:784
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3972
          • 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:3980
            • C:\Windows\system32\backgroundTaskHost.exe
              "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
              1⤵
                PID:1680
              • C:\Windows\system32\backgroundTaskHost.exe
                "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                1⤵
                  PID:1152
                • C:\Windows\system32\backgroundTaskHost.exe
                  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppX53ypgrj20bgndg05hj3tc7z654myszwp.mca
                  1⤵
                    PID:3128
                  • C:\Windows\system32\rundll32.exe
                    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Packed.Win32.Salpack.dll,#1
                    1⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2664
                    • C:\Windows\SysWOW64\rundll32.exe
                      rundll32.exe C:\Users\Admin\AppData\Local\Temp\Packed.Win32.Salpack.dll,#1
                      2⤵
                      • Suspicious use of WriteProcessMemory
                      PID:2844
                      • C:\Users\Admin\AppData\Local\Temp\e576dfc.exe
                        C:\Users\Admin\AppData\Local\Temp\e576dfc.exe
                        3⤵
                        • 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:1844
                      • C:\Users\Admin\AppData\Local\Temp\e5770ea.exe
                        C:\Users\Admin\AppData\Local\Temp\e5770ea.exe
                        3⤵
                        • Executes dropped EXE
                        PID:4600
                      • C:\Users\Admin\AppData\Local\Temp\e57a7aa.exe
                        C:\Users\Admin\AppData\Local\Temp\e57a7aa.exe
                        3⤵
                        • Modifies firewall policy service
                        • UAC bypass
                        • Windows security bypass
                        • Executes dropped EXE
                        • Windows security modification
                        • Checks whether UAC is enabled
                        • Drops file in Windows directory
                        • Suspicious behavior: EnumeratesProcesses
                        • Suspicious use of WriteProcessMemory
                        • System policy modification
                        PID:4728
                  • C:\Windows\System32\RuntimeBroker.exe
                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                    1⤵
                      PID:476
                    • C:\Windows\System32\RuntimeBroker.exe
                      C:\Windows\System32\RuntimeBroker.exe -Embedding
                      1⤵
                        PID:4192
                      • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                        "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                        1⤵
                          PID:4064
                        • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                          "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                          1⤵
                            PID:3908
                          • C:\Windows\system32\DllHost.exe
                            C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                            1⤵
                              PID:3784
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                              1⤵
                                PID:3572
                              • C:\Windows\Explorer.EXE
                                C:\Windows\Explorer.EXE
                                1⤵
                                  PID:3464
                                • C:\Windows\system32\taskhostw.exe
                                  taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                                  1⤵
                                    PID:2928
                                  • C:\Windows\system32\svchost.exe
                                    C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                                    1⤵
                                      PID:2656
                                    • C:\Windows\system32\sihost.exe
                                      sihost.exe
                                      1⤵
                                        PID:2624
                                      • C:\Windows\system32\BackgroundTaskHost.exe
                                        "C:\Windows\system32\BackgroundTaskHost.exe" -ServerName:BackgroundTaskHost.WebAccountProvider
                                        1⤵
                                          PID:3148
                                        • C:\Windows\System32\RuntimeBroker.exe
                                          C:\Windows\System32\RuntimeBroker.exe -Embedding
                                          1⤵
                                            PID:5100
                                          • C:\Windows\System32\RuntimeBroker.exe
                                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                                            1⤵
                                              PID:2572
                                            • C:\Windows\System32\wuapihost.exe
                                              C:\Windows\System32\wuapihost.exe -Embedding
                                              1⤵
                                                PID:4900

                                              Network

                                                    MITRE ATT&CK Enterprise v15

                                                    Replay Monitor

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                                                    Downloads

                                                    • C:\Users\Admin\AppData\Local\Temp\e576dfc.exe

                                                      Filesize

                                                      97KB

                                                      MD5

                                                      2dbaf6c9322694eed36f5db287e977b5

                                                      SHA1

                                                      9009b4e7ef9e7f1f012bff8c2a6beb311ace94c4

                                                      SHA256

                                                      cf3f29025570deb7227b4cd4b8a88d49c3987f0abaa26d04581bec3fc1957db3

                                                      SHA512

                                                      8347e8ef0c4ba69329e0f27af10bd71858692f0696abfde1b8e32d1c50ad49049b7df9f5ffbc5d3f88d489337e8a464d309e7c845775b2d0f131835d3bc54c71

                                                    • C:\Windows\SYSTEM.INI

                                                      Filesize

                                                      257B

                                                      MD5

                                                      f9ede2bf24098023078ad72afa9d2e7b

                                                      SHA1

                                                      449b69ea0adb0958cd84ada231caedce5e89f5d3

                                                      SHA256

                                                      d86161df67a6aa9d7fd28d0ac9a919a736c112e690fec2793fb59b4f4e45e838

                                                      SHA512

                                                      fc0dc264d63eb74ec912275af7e09db4865436094be4761d7a1b32ac87ccf7f7c19614d318fe554f52f011a817e88942fedfc0989525fde8152918b3665bc744

                                                    • memory/1844-81-0x0000000000400000-0x0000000000412000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/1844-59-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-8-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-9-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-58-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-52-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-51-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-17-0x0000000001A00000-0x0000000001A01000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/1844-14-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-22-0x00000000019F0000-0x00000000019F2000-memory.dmp

                                                      Filesize

                                                      8KB

                                                    • memory/1844-5-0x0000000000400000-0x0000000000412000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/1844-23-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-30-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-31-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-6-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-34-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-32-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-35-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-36-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-33-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-60-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-50-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-41-0x00000000007E0000-0x000000000189A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/1844-72-0x00000000019F0000-0x00000000019F2000-memory.dmp

                                                      Filesize

                                                      8KB

                                                    • memory/2844-47-0x0000000003C50000-0x0000000003C52000-memory.dmp

                                                      Filesize

                                                      8KB

                                                    • memory/2844-1-0x0000000010000000-0x0000000010020000-memory.dmp

                                                      Filesize

                                                      128KB

                                                    • memory/2844-12-0x0000000003D80000-0x0000000003D81000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2844-13-0x0000000003C50000-0x0000000003C52000-memory.dmp

                                                      Filesize

                                                      8KB

                                                    • memory/2844-10-0x0000000003C50000-0x0000000003C52000-memory.dmp

                                                      Filesize

                                                      8KB

                                                    • memory/4600-40-0x00000000001E0000-0x00000000001E2000-memory.dmp

                                                      Filesize

                                                      8KB

                                                    • memory/4600-24-0x0000000000400000-0x0000000000412000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/4600-39-0x00000000001E0000-0x00000000001E2000-memory.dmp

                                                      Filesize

                                                      8KB

                                                    • memory/4600-38-0x00000000001F0000-0x00000000001F1000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/4728-87-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-91-0x0000000003E70000-0x0000000003E71000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/4728-84-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-85-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-86-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-49-0x0000000000400000-0x0000000000412000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/4728-88-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-82-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-97-0x0000000003520000-0x0000000003522000-memory.dmp

                                                      Filesize

                                                      8KB

                                                    • memory/4728-92-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-98-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-99-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-100-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB

                                                    • memory/4728-117-0x0000000000400000-0x0000000000412000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/4728-118-0x00000000007B0000-0x000000000186A000-memory.dmp

                                                      Filesize

                                                      16.7MB