Analysis
- max time kernel
124s - max time network
137s - platform
windows10-2004_x64 - resource
win10v2004-20250502-en - resource tags
- submitted
10/06/2025, 08:51
General
- Target 5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9.exe
- Size 584KB
- Sample250610-kr93casvbx
- SHA256 5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9
Malware Config
Extracted
-
masslogger
-
exfiltration_mode
#SMTPEnabled
-
expire_time_date
2025-06-14
-
host_password
*L3g@l*123#
-
host_port
25
- host_receiver
- host_sender
-
host_server
mail.blast.org.bd
-
ssl_slate
True
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- Masslogger family
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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
- 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 SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9.exe"C:\Users\Admin\AppData\Local\Temp\5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- 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\5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RnXmFCF.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RnXmFCF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC1C9.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9.exe"C:\Users\Admin\AppData\Local\Temp\5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9.exe"C:\Users\Admin\AppData\Local\Temp\5f0c1e6643531444cada92f54702c1f60894484cce980f70132f04f753a398f9.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_m45noe4j.mng.ps1
tmpC1C9.tmp
memory/2252-75-0x0000000005B00000-0x0000000005E54000-memory.dmp
memory/2252-90-0x0000000007410000-0x00000000074B3000-memory.dmp
memory/2252-80-0x0000000071330000-0x000000007137C000-memory.dmp
memory/2252-79-0x0000000006340000-0x000000000638C000-memory.dmp
memory/2252-91-0x00000000076E0000-0x00000000076F1000-memory.dmp
memory/2252-93-0x0000000007720000-0x0000000007734000-memory.dmp
memory/2744-92-0x0000000006170000-0x00000000061C0000-memory.dmp
memory/2744-65-0x0000000000400000-0x000000000041E000-memory.dmp
memory/2744-95-0x0000000006590000-0x0000000006752000-memory.dmp
memory/2768-43-0x0000000005FF0000-0x000000000600E000-memory.dmp
memory/2768-49-0x0000000006D80000-0x0000000006D8A000-memory.dmp
memory/2768-15-0x0000000004A10000-0x0000000004A32000-memory.dmp
memory/2768-17-0x00000000053B0000-0x0000000005416000-memory.dmp
memory/2768-16-0x0000000005290000-0x00000000052F6000-memory.dmp
memory/2768-13-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/2768-27-0x0000000005420000-0x0000000005774000-memory.dmp
memory/2768-28-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/2768-29-0x00000000059E0000-0x00000000059FE000-memory.dmp
memory/2768-30-0x0000000005A30000-0x0000000005A7C000-memory.dmp
memory/2768-32-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/2768-31-0x0000000005FB0000-0x0000000005FE2000-memory.dmp
memory/2768-33-0x000000006F5C0000-0x000000006F60C000-memory.dmp
memory/2768-12-0x0000000004440000-0x0000000004476000-memory.dmp
memory/2768-44-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/2768-45-0x00000000069E0000-0x0000000006A83000-memory.dmp
memory/2768-46-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/2768-48-0x0000000006D10000-0x0000000006D2A000-memory.dmp
memory/2768-47-0x0000000007350000-0x00000000079CA000-memory.dmp
memory/2768-14-0x0000000004AB0000-0x00000000050D8000-memory.dmp
memory/2768-50-0x0000000006F90000-0x0000000007026000-memory.dmp
memory/2768-51-0x0000000006F10000-0x0000000006F21000-memory.dmp
memory/2768-52-0x0000000006F40000-0x0000000006F4E000-memory.dmp
memory/2768-53-0x0000000006F50000-0x0000000006F64000-memory.dmp
memory/2768-54-0x0000000007050000-0x000000000706A000-memory.dmp
memory/2768-55-0x0000000007030000-0x0000000007038000-memory.dmp
memory/2768-58-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/3508-7-0x00000000057C0000-0x00000000057D6000-memory.dmp
memory/3508-11-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/3508-10-0x00000000068B0000-0x0000000006912000-memory.dmp
memory/3508-9-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/3508-77-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/3508-8-0x0000000074D8E000-0x0000000074D8F000-memory.dmp
memory/3508-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp
memory/3508-5-0x00000000057F0000-0x000000000588C000-memory.dmp
memory/3508-6-0x0000000074D80000-0x0000000075530000-memory.dmp
memory/3508-4-0x0000000005540000-0x000000000554A000-memory.dmp
memory/3508-3-0x0000000005480000-0x0000000005512000-memory.dmp
memory/3508-2-0x0000000005970000-0x0000000005F14000-memory.dmp
memory/3508-1-0x0000000000A20000-0x0000000000AB8000-memory.dmp