Analysis
- max time kernel
151s - max time network
159s - platform
windows10_x64 - resource
win10v20210408 - submitted
06/09/2021, 16:47
General
- Target 973c74057f1054e07a98170568bb9bc9.exe
- Size 96KB
- Sample210906-vah8eabcd9
- SHA256 6cbaf335b0737ddf3f782688324856ef573d1978897299461f7a43c8efeaa008
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.
- Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\973c74057f1054e07a98170568bb9bc9.exe"C:\Users\Admin\AppData\Local\Temp\973c74057f1054e07a98170568bb9bc9.exe"1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\973c74057f1054e07a98170568bb9bc9.exe"C:\Users\Admin\AppData\Local\Temp\973c74057f1054e07a98170568bb9bc9.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1340-120-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1340-121-0x0000000000401000-0x00000000004FD000-memory.dmp
memory/1340-123-0x0000000000560000-0x0000000000660000-memory.dmp
memory/1340-125-0x00000000771E0000-0x000000007736E000-memory.dmp
memory/1340-124-0x00007FFFFE1A0000-0x00007FFFFE37B000-memory.dmp
memory/1340-126-0x0000000000401000-0x0000000000541000-memory.dmp
memory/3008-116-0x00000000021D0000-0x00000000021E3000-memory.dmp
memory/3008-118-0x00000000771E0000-0x000000007736E000-memory.dmp
memory/3008-117-0x00007FFFFE1A0000-0x00007FFFFE37B000-memory.dmp
memory/3008-122-0x00000000771E0000-0x000000007736E000-memory.dmp