Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
18/07/2026, 19:30
General
- Target WindowsUpdate.exe
- Size 189KB
- Sample260718-x79sqsd151
- SHA256 0a3061ce09d7e3cb2b3d3453432da69ee83b59b782853d1f6462fd177db75a7a
Malware Config
Extracted
-
valleyrat_s2
-
1.0
-
103.119.3.160:6666
-
127.0.0.1:80
-
campaign_date
2026. 7.15
Signatures
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Detects ValleyRAT payload 7 IoCs
- Drops startup file 1 IoCs
- Enumerates connected drives 3 TTPs 22 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).
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of SetWindowsHookEx 1 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
-
C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"1⤵
- Drops startup file
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/1100-5-0x000001E708AA0000-0x000001E708AA2000-memory.dmp
memory/1100-7-0x000001E708F00000-0x000001E708F29000-memory.dmp
memory/1100-8-0x000001E708E70000-0x000001E708EF1000-memory.dmp
memory/1100-9-0x000001E708F00000-0x000001E708F29000-memory.dmp
memory/1100-11-0x000001E708F00000-0x000001E708F29000-memory.dmp
memory/1100-10-0x000001E708F00000-0x000001E708F29000-memory.dmp
memory/1100-13-0x000001E709160000-0x000001E7091AB000-memory.dmp
memory/1100-15-0x000001E7091B0000-0x000001E709202000-memory.dmp
memory/1100-14-0x000001E7091B0000-0x000001E709202000-memory.dmp
memory/1100-12-0x000001E708F00000-0x000001E708F29000-memory.dmp
memory/1100-16-0x000001E7091B0000-0x000001E709202000-memory.dmp
memory/1100-17-0x000001E7091B0000-0x000001E709202000-memory.dmp
memory/1100-18-0x000001E7091B0000-0x000001E709202000-memory.dmp
memory/1100-19-0x000001E708F00000-0x000001E708F29000-memory.dmp
memory/1100-21-0x000001E7091B0000-0x000001E709202000-memory.dmp