Analysis
- max time kernel
150s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
- submitted
29/06/2026, 23:00
General
- Target 2f3e3c0134aee76ac9876b3212116261.exe
- Size 2.0MB
- Sample260629-2zfl5sat2j
- SHA256 a81dd7a5c94f3f82fe489a5e9ccb5e8618f22d3846d1d74388e88e399a8de2e7
Malware Config
Extracted
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valleyrat_s2
-
1.0
-
47.243.127.117:887
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47.243.127.117:889
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127.0.0.1:80
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campaign_date
2026. 6.24
Signatures
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Badlisted process makes network request 6 IoCs
Network request originating from process or tool commonly abused by malware.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 2 IoCs
- Adds Run key to start application 2 TTPs 2 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 44 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Inno Setup is an open-source installation builder for Windows applications. 2 IoCs
Inno Setup installer
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2f3e3c0134aee76ac9876b3212116261.exe"C:\Users\Admin\AppData\Local\Temp\2f3e3c0134aee76ac9876b3212116261.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-GT1E7.tmp\2f3e3c0134aee76ac9876b3212116261.tmp"C:\Users\Admin\AppData\Local\Temp\is-GT1E7.tmp\2f3e3c0134aee76ac9876b3212116261.tmp" /SL5="$50278,1068342,826880,C:\Users\Admin\AppData\Local\Temp\2f3e3c0134aee76ac9876b3212116261.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\kaj2v71hpm\mdmerge.exe"C:\Users\Admin\AppData\Local\kaj2v71hpm\mdmerge.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe4⤵
- Badlisted process makes network request
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
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C:\Users\Admin\AppData\Local\kaj2v71hpm\mdmerge.exeC:\Users\Admin\AppData\Local\kaj2v71hpm\mdmerge.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe2⤵
- Badlisted process makes network request
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
2f3e3c0134aee76ac9876b3212116261.tmp
MidlrtMd.dll
decrypt.dat
mdmerge.exe
memory/920-31-0x0000000000550000-0x0000000000628000-memory.dmp
memory/920-1-0x0000000000550000-0x0000000000628000-memory.dmp
memory/1068-44-0x0000000002B50000-0x0000000002BAA000-memory.dmp
memory/1068-56-0x00000000023D0000-0x00000000023EC000-memory.dmp
memory/1068-41-0x0000000002B50000-0x0000000002BAA000-memory.dmp
memory/1068-43-0x0000000002B50000-0x0000000002BAA000-memory.dmp
memory/1068-57-0x00000000023D0000-0x00000000023EC000-memory.dmp
memory/1068-42-0x0000000002B50000-0x0000000002BAA000-memory.dmp
memory/1068-35-0x00000000023D0000-0x00000000023EC000-memory.dmp
memory/1068-36-0x00000000023D0000-0x00000000023EC000-memory.dmp
memory/1068-37-0x00000000023D0000-0x00000000023EC000-memory.dmp
memory/1068-39-0x00000000023D0000-0x00000000023EC000-memory.dmp
memory/1068-40-0x0000000002B50000-0x0000000002BAA000-memory.dmp
memory/1668-34-0x0000000075600000-0x000000007560C000-memory.dmp
memory/1940-48-0x00000000009A0000-0x00000000009BC000-memory.dmp
memory/1940-51-0x00000000029E0000-0x0000000002A3A000-memory.dmp
memory/1940-30-0x0000000000610000-0x0000000000612000-memory.dmp
memory/1940-59-0x00000000009A0000-0x00000000009BC000-memory.dmp
memory/1940-46-0x00000000009A0000-0x00000000009BC000-memory.dmp
memory/1940-45-0x0000000002310000-0x0000000002391000-memory.dmp
memory/1940-55-0x00000000029E0000-0x0000000002A3A000-memory.dmp
memory/1940-47-0x00000000009A0000-0x00000000009BC000-memory.dmp
memory/1940-50-0x00000000009A0000-0x00000000009BC000-memory.dmp
memory/1940-53-0x00000000029E0000-0x0000000002A3A000-memory.dmp
memory/1940-52-0x00000000029E0000-0x0000000002A3A000-memory.dmp
memory/1940-54-0x00000000029E0000-0x0000000002A3A000-memory.dmp
memory/2520-28-0x0000000073F20000-0x0000000073F2C000-memory.dmp
memory/2660-29-0x0000000000E90000-0x00000000011EF000-memory.dmp
memory/2660-9-0x0000000005820000-0x0000000005960000-memory.dmp
memory/2660-8-0x0000000005820000-0x0000000005960000-memory.dmp
memory/2660-6-0x0000000000E80000-0x0000000000E81000-memory.dmp