Analysis
- max time kernel
149s - max time network
145s - platform
windows11-21h2_x64 - resource
win11-20251015-en - resource tags
- submitted
08/12/2025, 15:36
General
- Target 330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe
- Size 744KB
- Sample251208-s14wpaej8x
- SHA256 330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875
Malware Config
Extracted
-
masslogger
-
exfiltration_mode
#SMTPEnabled
-
expire_time_date
2025-12-12
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host_password
Intecsa!23
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host_port
587
- host_receiver
- host_sender
-
host_server
mail.intecsa.pe
-
ssl_slate
False
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- Masslogger family
- Loads dropped DLL 1 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 3 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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.
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 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 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe"C:\Users\Admin\AppData\Local\Temp\330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe"C:\Users\Admin\AppData\Local\Temp\330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe"2⤵
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-
C:\Users\Admin\AppData\Local\Temp\330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe"C:\Users\Admin\AppData\Local\Temp\330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Users\Admin\AppData\Local\Temp\330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe"C:\Users\Admin\AppData\Local\Temp\330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875.exe"3⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
System.dll
memory/4104-58-0x0000000038ED0000-0x0000000039476000-memory.dmp
memory/4104-60-0x0000000039690000-0x00000000396A0000-memory.dmp
memory/4104-42-0x0000000077D5B000-0x0000000077D5C000-memory.dmp
memory/4104-43-0x0000000077CDB000-0x0000000077CDC000-memory.dmp
memory/4104-56-0x0000000077C31000-0x0000000077D53000-memory.dmp
memory/4104-55-0x0000000000470000-0x0000000001787000-memory.dmp
memory/4104-41-0x0000000077CC8000-0x0000000077CC9000-memory.dmp
memory/4104-57-0x0000000000470000-0x000000000048E000-memory.dmp
memory/4104-59-0x0000000039480000-0x000000003951C000-memory.dmp
memory/4104-69-0x0000000036900000-0x000000003690A000-memory.dmp
memory/4104-61-0x0000000039930000-0x0000000039980000-memory.dmp
memory/4104-63-0x0000000077D5B000-0x0000000077D5C000-memory.dmp
memory/4104-64-0x0000000039AC0000-0x0000000039C82000-memory.dmp
memory/4104-65-0x0000000039690000-0x00000000396A0000-memory.dmp
memory/4104-68-0x0000000036820000-0x00000000368B2000-memory.dmp
memory/5356-40-0x00000000749D5000-0x00000000749D6000-memory.dmp