Analysis
- max time kernel
15s - max time network
115s - platform
windows10_x64 - resource
win10v20201028 - submitted
24/11/2020, 10:06
General
- Target Bc.exe
- Size 424KB
- Sample201124-bampt18gls
- SHA256 b25aeadf9b7a24092bf9cc73be9f45ccfa08ac94c5a883aff2d8d8a5df68ffd9
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 1 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.
- Adds Run key to start application 2 TTPs 1 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 behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Bc.exe"C:\Users\Admin\AppData\Local\Temp\Bc.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- 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/492-0-0x0000000073290000-0x000000007397E000-memory.dmp
memory/492-1-0x00000000002D0000-0x00000000002D1000-memory.dmp
memory/492-3-0x00000000050A0000-0x00000000050A1000-memory.dmp
memory/492-4-0x0000000004BA0000-0x0000000004BA1000-memory.dmp
memory/492-5-0x0000000004B70000-0x0000000004B71000-memory.dmp
memory/492-6-0x0000000006B20000-0x0000000006B82000-memory.dmp
memory/492-7-0x0000000006D00000-0x0000000006D01000-memory.dmp
memory/492-8-0x00000000075D0000-0x0000000007656000-memory.dmp
memory/492-9-0x00000000085B0000-0x00000000085B1000-memory.dmp
memory/492-10-0x00000000086A0000-0x00000000086A1000-memory.dmp