Analysis
- max time kernel
123s - max time network
122s - platform
windows10_x64 - resource
win10 - submitted
07/10/2020, 05:08
General
- Target REQUEST FOR QUOTATION - 20201007~PDF.exe
- Size 564KB
- Sample201007-wyb31af7ca
- SHA256 8e87c32725b853bc0ba2bbd95c3095b203bd064599d7ce35e310dc29b8d41528
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Drops startup file 2 IoCs
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- 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 2 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\REQUEST FOR QUOTATION - 20201007~PDF.exe"C:\Users\Admin\AppData\Local\Temp\REQUEST FOR QUOTATION - 20201007~PDF.exe"1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Adds Run key to start application
- 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
-
-
C:\Users\Admin\AppData\Local\Temp\REQUEST FOR QUOTATION - 20201007~PDF.exe"C:\Users\Admin\AppData\Local\Temp\REQUEST FOR QUOTATION - 20201007~PDF.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2896 -s 11042⤵
- Program crash
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1032-18-0x0000000005E90000-0x0000000005E91000-memory.dmp
memory/1032-17-0x0000000005EB0000-0x0000000005EB1000-memory.dmp
memory/1032-16-0x0000000005AE0000-0x0000000005AE1000-memory.dmp
memory/1032-15-0x0000000004E40000-0x0000000004E41000-memory.dmp
memory/1032-9-0x00000000739C0000-0x00000000740AE000-memory.dmp
memory/1032-7-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1752-14-0x0000000004B90000-0x0000000004B91000-memory.dmp
memory/2896-6-0x0000000005720000-0x0000000005721000-memory.dmp
memory/2896-5-0x0000000004FB0000-0x0000000004FFB000-memory.dmp
memory/2896-0-0x00000000739C0000-0x00000000740AE000-memory.dmp
memory/2896-3-0x0000000005020000-0x0000000005021000-memory.dmp
memory/2896-1-0x0000000000790000-0x0000000000791000-memory.dmp