Analysis
- max time kernel
150s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
08/03/2022, 15:25
General
- Target Quotation0098283662PDF.exe
- Size 111KB
- Sample220308-stmzlabceq
- SHA256 4d3b3b7bcb7d186bd6cd61954cb858c00d1395dffc221f4f70ee3be2b5def793
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Loads dropped DLL 1 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Quotation0098283662PDF.exe"C:\Users\Admin\AppData\Local\Temp\Quotation0098283662PDF.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Quotation0098283662PDF.exe"C:\Users\Admin\AppData\Local\Temp\Quotation0098283662PDF.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2608-131-0x00000000049A0000-0x0000000004AA0000-memory.dmp
memory/2608-132-0x00007FFB36B10000-0x00007FFB36D05000-memory.dmp
memory/2608-133-0x0000000077600000-0x00000000777A3000-memory.dmp
memory/2608-134-0x0000000077600000-0x00000000777A3000-memory.dmp
memory/5072-135-0x0000000000400000-0x0000000001654000-memory.dmp
memory/5072-136-0x0000000001660000-0x0000000001760000-memory.dmp
memory/5072-137-0x00007FFB36B10000-0x00007FFB36D05000-memory.dmp
memory/5072-138-0x0000000077600000-0x00000000777A3000-memory.dmp
memory/5072-139-0x0000000077600000-0x00000000777A3000-memory.dmp
memory/5072-140-0x0000000000400000-0x0000000001654000-memory.dmp
memory/5072-142-0x0000000000401000-0x0000000001654000-memory.dmp
memory/5072-147-0x0000000000400000-0x000000000047A000-memory.dmp