Analysis
- max time kernel
149s - max time network
147s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
15/04/2026, 03:32
General
- Target e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126.exe
- Size 2.1MB
- Sample260415-d3qdrahv2w
- SHA256 e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126
Malware Config
Extracted
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valleyrat_s2
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1.0
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108.187.4.158:557
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108.187.4.158:558
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127.0.0.1:80
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campaign_date
2026. 4. 1
Signatures
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Sets service image path in registry 3 TTPs 1 IoCs
This determines the executable launched when a service starts. It can be used to establish persistence.
- Executes dropped EXE 4 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.
- Drops file in Program Files directory 11 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 11 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
- Kills process with taskkill 2 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: LoadsDriver 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SetWindowsHookEx 4 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126.exe"C:\Users\Admin\AppData\Local\Temp\e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-N3KRS.tmp\e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126.tmp"C:\Users\Admin\AppData\Local\Temp\is-N3KRS.tmp\e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126.tmp" /SL5="$801EA,1213087,826880,C:\Users\Admin\AppData\Local\Temp\e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126.exe"2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exe"taskkill.exe" /F /IM PrintDialog.exe3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\taskkill.exe"taskkill.exe" /F /IM MpCmdRun.exe3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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C:\Program Files (x86)\output_86\6688.exe"C:\Program Files (x86)\output_86\6688.exe"3⤵
- Sets service image path in registry
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Program Files (x86)\output_86\PrintDialog.exe"C:\Program Files (x86)\output_86\PrintDialog.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd.exe /c schtasks /create /f /rl highest /sc onlogon /tn "\Microsoft\Windows\Management\Autopilot\PrintHandler" /tr "\"C:\Program Files (x86)\output_86\PrintDialog.exe\""4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /rl highest /sc onlogon /tn "\Microsoft\Windows\Management\Autopilot\PrintHandler" /tr "\"C:\Program Files (x86)\output_86\PrintDialog.exe\""5⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Program Files (x86)\output_86\PrintDialog.exe"C:\Program Files (x86)\output_86\PrintDialog.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd.exe /c schtasks /create /f /rl highest /sc onlogon /tn "\Microsoft\Windows\Management\Autopilot\PrintHandler" /tr "\"C:\Program Files (x86)\output_86\PrintDialog.exe\""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /rl highest /sc onlogon /tn "\Microsoft\Windows\Management\Autopilot\PrintHandler" /tr "\"C:\Program Files (x86)\output_86\PrintDialog.exe\""3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
6688.exe
PrintDialog.dll
PrintDialog.exe
decoy_8021441293.jpg
msiexec.dll
e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126.tmp
memory/1748-53-0x0000000003320000-0x000000000337A000-memory.dmp
memory/1748-50-0x0000000003320000-0x000000000337A000-memory.dmp
memory/1748-56-0x0000000002EE0000-0x0000000002EFC000-memory.dmp
memory/1748-57-0x0000000002EE0000-0x0000000002EFC000-memory.dmp
memory/1748-51-0x0000000003320000-0x000000000337A000-memory.dmp
memory/1748-52-0x0000000003320000-0x000000000337A000-memory.dmp
memory/1748-49-0x0000000002EE0000-0x0000000002EFC000-memory.dmp
memory/1748-55-0x0000000003320000-0x000000000337A000-memory.dmp
memory/1748-73-0x0000000004190000-0x000000000428E000-memory.dmp
memory/1748-43-0x0000000002EE0000-0x0000000002EFC000-memory.dmp
memory/1748-44-0x0000000002EE0000-0x0000000002EFC000-memory.dmp
memory/1748-45-0x0000000002EE0000-0x0000000002EFC000-memory.dmp
memory/1748-46-0x00000000743D0000-0x00000000743DC000-memory.dmp
memory/1748-47-0x0000000002D40000-0x0000000002D47000-memory.dmp
memory/2108-64-0x0000000002C50000-0x0000000002CAA000-memory.dmp
memory/2108-70-0x00000000039E0000-0x0000000003ADE000-memory.dmp
memory/2108-135-0x0000000002C50000-0x0000000002CAA000-memory.dmp
memory/2108-118-0x0000000002C50000-0x0000000002CAA000-memory.dmp
memory/2108-119-0x0000000010000000-0x000000001006B000-memory.dmp
memory/2108-68-0x00000000743D0000-0x00000000743DC000-memory.dmp
memory/2108-75-0x00000000028F0000-0x000000000290C000-memory.dmp
memory/2108-74-0x00000000028F0000-0x000000000290C000-memory.dmp
memory/2108-58-0x00000000028F0000-0x000000000290C000-memory.dmp
memory/2108-59-0x00000000028F0000-0x000000000290C000-memory.dmp
memory/2108-60-0x00000000028F0000-0x000000000290C000-memory.dmp
memory/2108-62-0x00000000028F0000-0x000000000290C000-memory.dmp
memory/2108-63-0x0000000002C50000-0x0000000002CAA000-memory.dmp
memory/2108-69-0x0000000002750000-0x0000000002757000-memory.dmp
memory/2108-66-0x0000000002C50000-0x0000000002CAA000-memory.dmp
memory/2108-65-0x0000000002C50000-0x0000000002CAA000-memory.dmp
memory/2108-67-0x0000000002C50000-0x0000000002CAA000-memory.dmp
memory/2260-31-0x0000000000BD0000-0x0000000000C4A000-memory.dmp
memory/2884-0-0x0000000000220000-0x00000000002F8000-memory.dmp
memory/2884-39-0x0000000000E10000-0x0000000000E2A000-memory.dmp
memory/2884-38-0x0000000000220000-0x00000000002F8000-memory.dmp
memory/3320-36-0x0000000000050000-0x00000000003AF000-memory.dmp
memory/3320-5-0x0000000003210000-0x0000000003211000-memory.dmp
memory/3320-7-0x00000000033E0000-0x0000000003520000-memory.dmp
memory/3320-8-0x00000000033E0000-0x0000000003520000-memory.dmp
memory/3320-37-0x0000000001460000-0x00000000014DA000-memory.dmp