Analysis
- max time kernel
123s - max time network
144s - platform
windows10_x64 - resource
win10 - submitted
16/10/2020, 12:40
General
- Target Statement of Account from Fuzhou Jianxiang.exe
- Size 284KB
- Sample201016-6mbsaxxbwe
- SHA256 4e3fbf643241ed1d88707fd4a022c5fb312a75004af4ef18adb0b0fc47e6f5b7
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 2 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 NtSetInformationThreadHideFromDebugger 12 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 21 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Statement of Account from Fuzhou Jianxiang.exe"C:\Users\Admin\AppData\Local\Temp\Statement of Account from Fuzhou Jianxiang.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 42⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Local\Temp\Statement of Account from Fuzhou Jianxiang.exe"C:\Users\Admin\AppData\Local\Temp\Statement of Account from Fuzhou Jianxiang.exe"2⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2808 -s 17242⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1744-7-0x0000000000400000-0x0000000000486000-memory.dmp
memory/1744-15-0x0000000005840000-0x0000000005841000-memory.dmp
memory/1744-20-0x0000000006F70000-0x0000000006F71000-memory.dmp
memory/1744-18-0x0000000006E50000-0x0000000006E51000-memory.dmp
memory/1744-17-0x0000000006650000-0x0000000006651000-memory.dmp
memory/1744-9-0x00000000739C0000-0x00000000740AE000-memory.dmp
memory/2216-12-0x0000000004F50000-0x0000000004F51000-memory.dmp
memory/2216-13-0x0000000005690000-0x0000000005691000-memory.dmp
memory/2808-0-0x00000000739C0000-0x00000000740AE000-memory.dmp
memory/2808-3-0x0000000004B40000-0x0000000004B41000-memory.dmp
memory/2808-6-0x0000000005A50000-0x0000000005A51000-memory.dmp
memory/2808-5-0x0000000005450000-0x00000000054DD000-memory.dmp
memory/2808-1-0x00000000000A0000-0x00000000000A1000-memory.dmp