Analysis
- max time kernel
63s - max time network
117s - platform
windows7_x64 - resource
win7v200722 - submitted
14/10/2020, 14:12
General
- Target usd37400.exe
- Size 1008KB
- Sample201014-azrx8jecaj
- SHA256 fce44d4ea50194f48988cd604e3bd7fa580f9d55ebc1c8c1da791c0737133a9f
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 4 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\usd37400.exe"C:\Users\Admin\AppData\Local\Temp\usd37400.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\usd37400.exe"{path}"2⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/388-0-0x00000000741A0000-0x000000007488E000-memory.dmp
memory/388-1-0x0000000001220000-0x0000000001221000-memory.dmp
memory/388-3-0x0000000000580000-0x0000000000584000-memory.dmp
memory/388-4-0x0000000005A50000-0x0000000005B0F000-memory.dmp
memory/388-5-0x000000000A0C0000-0x000000000A180000-memory.dmp
memory/2032-6-0x0000000000400000-0x0000000000486000-memory.dmp
memory/2032-8-0x0000000000400000-0x0000000000486000-memory.dmp
memory/2032-9-0x0000000000400000-0x0000000000486000-memory.dmp
memory/2032-10-0x0000000074120000-0x000000007480E000-memory.dmp