Analysis
- max time kernel
124s - max time network
126s - platform
windows11-21h2_x64 - resource
win11-20250508-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.
- 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⤵
- 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\tmpAB05.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_kxitjjtz.whx.ps1
tmpAB05.tmp
memory/1564-6-0x0000000005D20000-0x0000000005DBC000-memory.dmp
memory/1564-8-0x000000007456E000-0x000000007456F000-memory.dmp
memory/1564-3-0x00000000059D0000-0x0000000005A62000-memory.dmp
memory/1564-4-0x00000000059B0000-0x00000000059BA000-memory.dmp
memory/1564-1-0x0000000000E80000-0x0000000000F18000-memory.dmp
memory/1564-5-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/1564-7-0x0000000005CE0000-0x0000000005CF6000-memory.dmp
memory/1564-2-0x0000000005F80000-0x0000000006526000-memory.dmp
memory/1564-9-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/1564-10-0x0000000008660000-0x00000000086C2000-memory.dmp
memory/1564-11-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/1564-58-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/1564-76-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/1564-0-0x000000007456E000-0x000000007456F000-memory.dmp
memory/2364-29-0x00000000067D0000-0x00000000067EE000-memory.dmp
memory/2364-48-0x0000000007BA0000-0x0000000007BAA000-memory.dmp
memory/2364-15-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/2364-16-0x0000000005A40000-0x0000000005A62000-memory.dmp
memory/2364-18-0x00000000062A0000-0x0000000006306000-memory.dmp
memory/2364-19-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/2364-17-0x0000000006230000-0x0000000006296000-memory.dmp
memory/2364-28-0x0000000006310000-0x0000000006667000-memory.dmp
memory/2364-13-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/2364-30-0x0000000006800000-0x000000000684C000-memory.dmp
memory/2364-31-0x00000000077A0000-0x00000000077D4000-memory.dmp
memory/2364-42-0x0000000006DC0000-0x0000000006DDE000-memory.dmp
memory/2364-33-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/2364-43-0x00000000077E0000-0x0000000007884000-memory.dmp
memory/2364-32-0x000000006F110000-0x000000006F15C000-memory.dmp
memory/2364-44-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/2364-47-0x0000000007B20000-0x0000000007B3A000-memory.dmp
memory/2364-46-0x0000000008160000-0x00000000087DA000-memory.dmp
memory/2364-45-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/2364-14-0x0000000005B10000-0x000000000613A000-memory.dmp
memory/2364-49-0x0000000007DB0000-0x0000000007E46000-memory.dmp
memory/2364-50-0x0000000007D30000-0x0000000007D41000-memory.dmp
memory/2364-51-0x0000000007D60000-0x0000000007D6E000-memory.dmp
memory/2364-52-0x0000000007D70000-0x0000000007D85000-memory.dmp
memory/2364-53-0x0000000007E70000-0x0000000007E8A000-memory.dmp
memory/2364-54-0x0000000007E60000-0x0000000007E68000-memory.dmp
memory/2364-57-0x0000000074560000-0x0000000074D11000-memory.dmp
memory/2364-12-0x0000000002FF0000-0x0000000003026000-memory.dmp
memory/5004-65-0x0000000005C40000-0x0000000005F97000-memory.dmp
memory/5004-78-0x0000000006750000-0x000000000679C000-memory.dmp
memory/5004-88-0x00000000074E0000-0x0000000007584000-memory.dmp
memory/5004-79-0x0000000070A30000-0x0000000070A7C000-memory.dmp
memory/5004-89-0x0000000007790000-0x00000000077A1000-memory.dmp
memory/5004-90-0x00000000077E0000-0x00000000077F5000-memory.dmp
memory/5996-74-0x0000000000400000-0x000000000041E000-memory.dmp
memory/5996-91-0x0000000006870000-0x00000000068C0000-memory.dmp
memory/5996-93-0x0000000006B90000-0x0000000006D52000-memory.dmp