Analysis
- max time kernel
153s - max time network
175s - platform
windows10-2004_x64 - resource
win10v2004-20220310-en - submitted
19/03/2022, 15:36
General
- Target 5dbfd4aa7cb80df7ed65e8f9f0acb5472d6c5733050869aa2d906410cd8e26a0.exe
- Size 5.9MB
- Sample220319-s2c5csche3
- SHA256 5dbfd4aa7cb80df7ed65e8f9f0acb5472d6c5733050869aa2d906410cd8e26a0
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 1 IoCs
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5dbfd4aa7cb80df7ed65e8f9f0acb5472d6c5733050869aa2d906410cd8e26a0.exe"C:\Users\Admin\AppData\Local\Temp\5dbfd4aa7cb80df7ed65e8f9f0acb5472d6c5733050869aa2d906410cd8e26a0.exe"1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\5dbfd4aa7cb80df7ed65e8f9f0acb5472d6c5733050869aa2d906410cd8e26a0.exe"C:\Users\Admin\AppData\Local\Temp\5dbfd4aa7cb80df7ed65e8f9f0acb5472d6c5733050869aa2d906410cd8e26a0.exe"2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1588-134-0x0000000074430000-0x0000000074BE0000-memory.dmp
memory/1588-135-0x0000000000D50000-0x0000000001340000-memory.dmp
memory/1588-136-0x00000000122A0000-0x000000001233C000-memory.dmp
memory/1588-137-0x00000000128F0000-0x0000000012E94000-memory.dmp
memory/1588-138-0x0000000006190000-0x0000000006191000-memory.dmp
memory/1588-139-0x00000000036E0000-0x0000000003772000-memory.dmp
memory/1588-140-0x0000000001C50000-0x0000000001C5A000-memory.dmp
memory/3208-141-0x0000000000400000-0x0000000000486000-memory.dmp
memory/3208-142-0x0000000074430000-0x0000000074BE0000-memory.dmp
memory/3208-143-0x0000000005D10000-0x0000000005D11000-memory.dmp
memory/3208-144-0x0000000007110000-0x0000000007176000-memory.dmp
memory/3208-145-0x0000000074D10000-0x0000000074D22000-memory.dmp