Analysis
- max time kernel
150s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
27/08/2026, 15:52
General
- Target 20260826.547281.6E9A319CD53AFD.exe
- Size 47KB
- Sample260827-tbbdhsxdrh
- SHA256 4ba01b04681a5273facdd8b17e7b7b2246ee0eab6168c932946e7e96b9099e2d
Malware Config
Extracted
-
valleyrat_s2
-
1.0
-
170.62.130.47:449
-
170.62.130.47:443
Signatures
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Detects ValleyRAT payload 6 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates connected drives 3 TTPs 44 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- UPX packed file 9 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Executes dropped EXE 5 IoCs
- Loads dropped DLL 19 IoCs
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Modifies registry class 8 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious behavior: LoadsDriver 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\20260826.547281.6E9A319CD53AFD.exe"C:\Users\Admin\AppData\Local\Temp\20260826.547281.6E9A319CD53AFD.exe"1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\explorer.exeexplorer.exe shell:::{3ABD6217-FF7E-4FF7-AC0F-ABA504D41FC4}2⤵
-
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C:\Users\Admin\AppData\Local\Temp\~tmp_43341.tmpC:\Users\Admin\AppData\Local\Temp\~tmp_43341.tmp1⤵
- Executes dropped EXE
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\ProgramData\OpenraVPN\Loader.exe"C:\ProgramData\OpenraVPN\Loader.exe" -onlyctrl2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.execmd.exe /c "C:\ProgramData\OpenraVPN\Loader.exe -reonlyctrl"3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\ProgramData\OpenraVPN\Loader.exeC:\ProgramData\OpenraVPN\Loader.exe -reonlyctrl4⤵
- Adds Run key to start application
- Enumerates connected drives
- Executes dropped EXE
- Loads dropped DLL
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-
-
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C:\ProgramData\OpenraVPN\Loader.exe"C:\ProgramData\OpenraVPN\Loader.exe" -onlyctrl1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\cmd.execmd.exe /c "C:\ProgramData\OpenraVPN\Loader.exe -reonlyctrl"2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\OpenraVPN\Loader.exeC:\ProgramData\OpenraVPN\Loader.exe -reonlyctrl3⤵
- Enumerates connected drives
- Executes dropped EXE
- Loads dropped DLL
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Loader.exe
msvcp140.dll
service.dll
vcruntime140.dll
vcruntime140_1.dll
~tmp_43341.tmp
memory/1752-11-0x00007FFC6ACD0000-0x00007FFC6AE47000-memory.dmp
memory/1752-26-0x00007FFC6ACD0000-0x00007FFC6AE47000-memory.dmp
memory/1900-27-0x00007FFC6AE50000-0x00007FFC6AFC7000-memory.dmp
memory/1900-0-0x00007FFC6AE50000-0x00007FFC6AFC7000-memory.dmp
memory/4308-36-0x00007FFC6ACD0000-0x00007FFC6AE47000-memory.dmp
memory/4548-44-0x0000021F6C000000-0x0000021F6C050000-memory.dmp
memory/4548-43-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4548-55-0x00007FFC6ACD0000-0x00007FFC6AE47000-memory.dmp
memory/4548-51-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4548-52-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4548-40-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4548-39-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4548-48-0x0000021F6C000000-0x0000021F6C050000-memory.dmp
memory/4548-47-0x0000021F6C000000-0x0000021F6C050000-memory.dmp
memory/4548-34-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4780-17-0x00007FFC6ACD0000-0x00007FFC6AE47000-memory.dmp
memory/4780-45-0x00000222D6BB0000-0x00000222D6C00000-memory.dmp
memory/4780-46-0x00000222D6BB0000-0x00000222D6C00000-memory.dmp
memory/4780-42-0x00000222D6BB0000-0x00000222D6C00000-memory.dmp
memory/4780-41-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4780-49-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4780-38-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4780-37-0x0000000140000000-0x000000014002A000-memory.dmp
memory/4780-53-0x00007FFC6ACD0000-0x00007FFC6AE47000-memory.dmp
memory/4780-19-0x0000000140000000-0x000000014002A000-memory.dmp