Analysis
- max time kernel
12s - max time network
110s - platform
windows10_x64 - resource
win10 - submitted
14/10/2020, 15:21
General
- Target KYMVDH2001015 川泰_pdf.exe
- Size 964KB
- Sample201014-pch2e3k7nj
- SHA256 1d3286d29155618ebaf43cfebc809f80daa7d247b9e3c872ea5c48c8109afcd0
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 3 IoCs
- UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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 behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\KYMVDH2001015 川泰_pdf.exe"C:\Users\Admin\AppData\Local\Temp\KYMVDH2001015 川泰_pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\KYMVDH2001015 川泰_pdf.exe"C:\Users\Admin\AppData\Local\Temp\KYMVDH2001015 川泰_pdf.exe"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/1008-6-0x0000000000802000-0x0000000000803000-memory.dmp
memory/1008-14-0x00000000061A0000-0x00000000061A1000-memory.dmp
memory/1008-3-0x0000000000400000-0x000000000051F000-memory.dmp
memory/1008-4-0x0000000000400000-0x000000000051F000-memory.dmp
memory/1008-5-0x0000000000AA0000-0x0000000000B26000-memory.dmp
memory/1008-10-0x0000000004990000-0x0000000004991000-memory.dmp
memory/1008-15-0x0000000006340000-0x0000000006341000-memory.dmp
memory/1008-1-0x0000000000400000-0x000000000051F000-memory.dmp
memory/1008-11-0x0000000004BC0000-0x0000000004BC1000-memory.dmp
memory/1008-12-0x0000000005930000-0x0000000005931000-memory.dmp
memory/1008-13-0x00000000061C0000-0x00000000061C1000-memory.dmp
memory/1008-7-0x0000000073620000-0x0000000073D0E000-memory.dmp
memory/2728-0-0x0000000000400000-0x00000000004F8000-memory.dmp