Analysis
- max time kernel
149s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-ja - resource tags
- submitted
09/10/2026, 12:38
General
- Target 2026.vbs
- Size 2KB
- Sample261009-pvd7asgv21
- SHA256 8bc8cf4b939e22ffcd3175db5ba539b3e9d0f709c071062a5eca4104261b7293
Malware Config
Extracted
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valleyrat_s2
-
1.0
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186.240.199.179:443
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186.240.199.212:443
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127.0.0.1:80
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campaign_date
2026. 8.12
Signatures
- Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Detects DonutLoader 1 IoCs
- Badlisted process makes network request 1 IoCs
Network request originating from process or tool commonly abused by malware.
- Downloads MZ/PE file 1 IoCs
- Executes dropped EXE 7 IoCs
- Loads dropped DLL 4 IoCs
- Enumerates connected drives 3 TTPs 22 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
- Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
- HTTP links in PDF interactive object 1 IoCs
Detects HTTP links in interactive objects within PDF files.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 3 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 behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\2026.vbs"1⤵
- Badlisted process makes network request
- Downloads MZ/PE file
- Executes a VBScript file via the Windows Script Host.
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c del /q C:\Users\Admin\AppData\Local\Temp\2026.vbs2⤵
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C:\config\safetest.exe"C:\config\safetest.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
-
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C:\config\Windows_system_deponcom.exeC:\config\Windows_system_deponcom.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\config\Battle.net.exe"C:\config\Battle.net.exe" --from-launcher2⤵
- Executes dropped EXE
- Loads dropped DLL
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C:\config\Windows_system_deponcom.exe"C:\config\Windows_system_deponcom.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\config\Battle.net.exe"C:\config\Battle.net.exe" --from-launcher2⤵
- Executes dropped EXE
- Loads dropped DLL
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C:\config\Windows_system_deponcom.exe"C:\config\Windows_system_deponcom.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\config\Battle.net.exe"C:\config\Battle.net.exe" --from-launcher2⤵
- Executes dropped EXE
- Loads dropped DLL
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Windows_system_deponcom.exe
libcef.dll
log.bin
safetest.exe
memory/556-22-0x000001EA93740000-0x000001EA937B3000-memory.dmp
memory/3780-38-0x0000023BA3F80000-0x0000023BA3FF3000-memory.dmp
memory/4968-17-0x0000023BFAAC0000-0x0000023BFAB33000-memory.dmp
memory/4968-16-0x0000023BFA980000-0x0000023BFA9F4000-memory.dmp
memory/4968-23-0x0000023BFACB0000-0x0000023BFAD08000-memory.dmp
memory/4968-24-0x0000023BFACB0000-0x0000023BFAD08000-memory.dmp
memory/4968-27-0x0000023BFACB0000-0x0000023BFAD08000-memory.dmp
memory/4968-26-0x0000023BFACB0000-0x0000023BFAD08000-memory.dmp
memory/4968-25-0x0000023BFACB0000-0x0000023BFAD08000-memory.dmp
memory/4968-28-0x0000023BFACB0000-0x0000023BFAD08000-memory.dmp
memory/5684-34-0x00000224C7EB0000-0x00000224C7F23000-memory.dmp