Analysis
- max time kernel
140s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
02/11/2026, 04:34
General
- Target a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d.exe
- Size 260KB
- Sample261102-e6931asw5p
- SHA256 a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d
Malware Config
Extracted
-
valleyrat_s2
-
roujizaixian.com:11300
-
roujizaixian.com:11301
Signatures
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Detects ValleyRAT payload 17 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates connected drives 3 TTPs 22 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Enumerates video capture drivers 2 TTPs 1 IoCs
Queries the legacy Video for Windows capture drivers. This is commonly abused by RATs to check for available webcams on the system before reporting to their C2.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d.exe"C:\Users\Admin\AppData\Local\Temp\a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d.exe"1⤵
- Enumerates connected drives
- Enumerates video capture drivers
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Local\Temp\a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d.exeC:\Users\Admin\AppData\Local\Temp\a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d.exe1⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Local\Temp\a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d.exeC:\Users\Admin\AppData\Local\Temp\a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d.exe1⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
a23cae7fa65cec37c72fe1dbb646a5817efa53e460bef97a2f3b285e110fb95d.exe
memory/1680-26-0x0000000002850000-0x00000000028EE000-memory.dmp
memory/1680-33-0x0000000002F70000-0x0000000002FAB000-memory.dmp
memory/1680-32-0x0000000002F70000-0x0000000002FAB000-memory.dmp
memory/2324-53-0x0000000002FC0000-0x0000000002FFB000-memory.dmp
memory/2324-54-0x0000000002FC0000-0x0000000002FFB000-memory.dmp
memory/2324-44-0x0000000002810000-0x00000000028B7000-memory.dmp
memory/4684-17-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-3-0x0000000010000000-0x000000001002E000-memory.dmp
memory/4684-18-0x0000000002930000-0x00000000029D9000-memory.dmp
memory/4684-40-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-11-0x0000000003060000-0x0000000003095000-memory.dmp
memory/4684-15-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-2-0x0000000002930000-0x00000000029D9000-memory.dmp
memory/4684-16-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-12-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-13-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-62-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-64-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-63-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-65-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-68-0x00000000031E0000-0x000000000321B000-memory.dmp
memory/4684-67-0x00000000031E0000-0x000000000321B000-memory.dmp