Analysis
- user interaction
yes - max time kernel
150s - max time network
141s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
26/08/2026, 03:52
General
- Target 20260817174508.7E2B96AC31DF.iso
- Size 3.3MB
- Sample260826-efj4wssbja
- SHA256 ffba21aa1eed6edd18f08433137ef3f1ae95fbc5616e71bf5735ffc43d8106d2
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
- Executes dropped EXE 5 IoCs
- Loads dropped DLL 16 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates connected drives 3 TTPs 42 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 3 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Modifies registry class 9 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: LoadsDriver 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\20260817174508.7E2B96AC31DF.iso1⤵
- Executes a command shell one-liner
- Modifies registry class
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
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\??\D:\20260817124517.A8F39C2D71BE.EXE"D:\20260817124517.A8F39C2D71BE.EXE"1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\explorer.exeexplorer.exe shell:::{C6A76571-5D28-44B9-8951-5046493BC7CE}2⤵
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C:\Users\Admin\AppData\Local\Temp\~tmp_87897.tmpC:\Users\Admin\AppData\Local\Temp\~tmp_87897.tmp1⤵
- Executes dropped EXE
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
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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 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
-
C:\ProgramData\OpenraVPN\Loader.exeC:\ProgramData\OpenraVPN\Loader.exe -reonlyctrl4⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
-
-
-
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C:\ProgramData\OpenraVPN\Loader.exe"C:\ProgramData\OpenraVPN\Loader.exe" -onlyctrl1⤵
- Executes dropped EXE
- Loads dropped DLL
- 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⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
-
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Loader.exe
libcef.dll
msvcp140.dll
vcruntime140.dll
vcruntime140_1.dll
~tmp_87897.tmp
memory/1628-31-0x0000021939A80000-0x0000021939AD0000-memory.dmp
memory/1628-33-0x0000021939A80000-0x0000021939AD0000-memory.dmp
memory/1628-26-0x0000000140000000-0x000000014002A000-memory.dmp
memory/1628-27-0x0000000140000000-0x000000014002A000-memory.dmp
memory/1628-39-0x0000000140000000-0x000000014002A000-memory.dmp
memory/1628-38-0x0000000140000000-0x000000014002A000-memory.dmp
memory/1628-13-0x0000000140000000-0x000000014002A000-memory.dmp
memory/1628-30-0x0000000140000000-0x000000014002A000-memory.dmp
memory/1628-32-0x0000021939A80000-0x0000021939AD0000-memory.dmp
memory/2480-28-0x0000000140000000-0x000000014002A000-memory.dmp
memory/2480-34-0x0000000140000000-0x000000014002A000-memory.dmp
memory/2480-35-0x000001689B910000-0x000001689B960000-memory.dmp
memory/2480-37-0x000001689B910000-0x000001689B960000-memory.dmp
memory/2480-36-0x000001689B910000-0x000001689B960000-memory.dmp
memory/2480-25-0x0000000140000000-0x000000014002A000-memory.dmp
memory/2480-29-0x0000000140000000-0x000000014002A000-memory.dmp
memory/2480-40-0x0000000140000000-0x000000014002A000-memory.dmp
memory/2480-41-0x0000000140000000-0x000000014002A000-memory.dmp