Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/07/2026, 22:45

General

  • Target
    8F93AA8AA04CA6C13477542655CDB74B.exe
  • Size 4.2MB
  • Sample260730-2prlnagm9y
  • SHA256 58b16700b8a3b8f0db2fb2e14b8c3e835270111518e67239b373a81ffd265b9a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • valleyrat_s2

Version
  • 1.0

C2
  • 156.247.40.131:4452

  • 156.247.40.131:4453

  • 127.0.0.1:80

Attributes
  • campaign_date

    2026. 7.21

Signatures

  • Family: ValleyRat

    ValleyRat stage2 is a backdoor written in C++.

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 9 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 64 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.

  • Looks up external IP address via web service 1 TTPs 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Windows directory 17 IoCs
  • Executes a command shell one-liner 1 TTPs 4 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 25 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Inno Setup is an open-source installation builder for Windows applications. 4 IoCs

    Inno Setup installer

  • Kills process with taskkill 1 IoCs
  • Modifies registry key 1 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8F93AA8AA04CA6C13477542655CDB74B.exe
    "C:\Users\Admin\AppData\Local\Temp\8F93AA8AA04CA6C13477542655CDB74B.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1820
    • C:\Users\Admin\AppData\Local\Temp\is-G2XEUKEKLH.tmp\8F93AA8AA04CA6C13477542655CDB74B.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-G2XEUKEKLH.tmp\8F93AA8AA04CA6C13477542655CDB74B.tmp" /SL5="$C0052,3206858,893952,C:\Users\Admin\AppData\Local\Temp\8F93AA8AA04CA6C13477542655CDB74B.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4464
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c ping 127.0.0.1 -n 3 >nul & "C:\Users\Admin\AppData\Local\Temp\8F93AA8AA04CA6C13477542655CDB74B.exe" /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:4152
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 3
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:5100
        • C:\Users\Admin\AppData\Local\Temp\8F93AA8AA04CA6C13477542655CDB74B.exe
          "C:\Users\Admin\AppData\Local\Temp\8F93AA8AA04CA6C13477542655CDB74B.exe" /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2336
          • C:\Users\Admin\AppData\Local\Temp\is-9ROL7ULNI2.tmp\8F93AA8AA04CA6C13477542655CDB74B.tmp
            "C:\Users\Admin\AppData\Local\Temp\is-9ROL7ULNI2.tmp\8F93AA8AA04CA6C13477542655CDB74B.tmp" /SL5="$70092,3206858,893952,C:\Users\Admin\AppData\Local\Temp\8F93AA8AA04CA6C13477542655CDB74B.exe" /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of WriteProcessMemory
            PID:4272
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c reg delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v Support /f 2>nul
              6⤵
              • Executes a command shell one-liner
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:252
              • C:\Windows\SysWOW64\reg.exe
                reg delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v Support /f
                7⤵
                • System Location Discovery: System Language Discovery
                • Modifies registry key
                PID:2404
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c taskkill /F /IM FFWallpaper.exe /T 2>nul
              6⤵
              • Executes a command shell one-liner
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:248
              • C:\Windows\SysWOW64\taskkill.exe
                taskkill /F /IM FFWallpaper.exe /T
                7⤵
                • System Location Discovery: System Language Discovery
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:832
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c rmdir /s /q "C:\Users\Admin\AppData\Roaming\instagram\13104742651" 2>nul
              6⤵
              • System Location Discovery: System Language Discovery
              PID:4524
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c rmdir /s /q "C:\Users\Admin\AppData\Roaming\instagram\FFWallpaper" 2>nul
              6⤵
              • System Location Discovery: System Language Discovery
              PID:3088
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del /f /q "C:\Users\Admin\AppData\Roaming\instagram\13104742651\register_startup_task.bat" 2>nul
              6⤵
              • System Location Discovery: System Language Discovery
              PID:904
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del /f /q "C:\Users\Admin\AppData\Roaming\instagram\13104742651\register_startup_run.bat" 2>nul
              6⤵
              • System Location Discovery: System Language Discovery
              PID:4948
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del /f /q "C:\Users\Admin\AppData\Roaming\instagram\13104742651\HaloTray.exe" 2>nul
              6⤵
              • System Location Discovery: System Language Discovery
              PID:5048
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del /f /q "C:\Users\Admin\AppData\Roaming\instagram\13104742651\startup.log" 2>nul
              6⤵
              • System Location Discovery: System Language Discovery
              PID:1980
            • C:\Users\Admin\AppData\Local\Temp\is-IQ7IV99OAD.tmp\inner_ai_setup.exe
              "C:\Users\Admin\AppData\Local\Temp\is-IQ7IV99OAD.tmp\inner_ai_setup.exe" /exenoui /qn /norestart
              6⤵
              • Executes dropped EXE
              • Enumerates connected drives
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2220
              • C:\Windows\SysWOW64\msiexec.exe
                "C:\Windows\system32\msiexec.exe" /i C:\Users\Admin\AppData\Roaming\instagram\13104742651\ffwallpaper_sfx.msi /qn /norestart AI_SETUPEXEPATH=C:\Users\Admin\AppData\Local\Temp\is-IQ7IV99OAD.tmp\inner_ai_setup.exe SETUPEXEDIR=C:\Users\Admin\AppData\Local\Temp\is-IQ7IV99OAD.tmp\ EXE_CMD_LINE="/exenoui /exenoupdates /forcecleanup /wintime 1785210811 /qn /norestart " MSIINSTALLPERUSER=""
                7⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of SetWindowsHookEx
                PID:1468
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del /f /q "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\13104742651.lnk" 2>nul & rmdir /s /q "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\13104742651" 2>nul
              6⤵
              • System Location Discovery: System Language Discovery
              PID:5080
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v Support /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\instagram\13104742651\FFWallpaper.exe" /f
              6⤵
              • Executes a command shell one-liner
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:6020
              • C:\Windows\SysWOW64\reg.exe
                reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v Support /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\instagram\13104742651\FFWallpaper.exe" /f
                7⤵
                • Adds Run key to start application
                • System Location Discovery: System Language Discovery
                • Modifies registry key
                PID:2920
            • C:\Users\Admin\AppData\Roaming\instagram\13104742651\FFWallpaper.exe
              "C:\Users\Admin\AppData\Roaming\instagram\13104742651\FFWallpaper.exe"
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:936
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2740
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 057003957C436EB79C1A38817F46CE0A C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5216
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DF18734A73D6DBE0BD5E39CBE6305898
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2820
  • C:\Users\Admin\AppData\Roaming\instagram\13104742651\FFWallpaper.exe
    C:\Users\Admin\AppData\Roaming\instagram\13104742651\FFWallpaper.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    PID:4480

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e597856.rbs

        • Path C:\Config.Msi\e597856.rbs
        • Size 11KB
        • SHA256 4623686ed2b235e1f2ebf28cb7f6881baa3438da9449419524e97634b5b7c633
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI76EC.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\MSI76EC.tmp
        • Size 1.1MB
        • SHA256 021242629aeef982a9c33846cdaf5cce15f3e4eda1c12fe2360797837089c29a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        8F93AA8AA04CA6C13477542655CDB74B.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-G2XEUKEKLH.tmp\8F93AA8AA04CA6C13477542655CDB74B.tmp
        • Size 4.2MB
        • SHA256 293860f537b6f2cae16e0735a7fb20f472cfc984d89f8a0d4bc231a4ddf195fa
        • MD5 SHA1 SHA512 SSDEEP TLSH

        inner_ai_setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\is-IQ7IV99OAD.tmp\inner_ai_setup.exe
        • Size 8.5MB
        • SHA256 45737260c13709135b0738bdd5262fa0cc1ea74398bf66fc6b77eba26aafd777
        • MD5 SHA1 SHA512 SSDEEP TLSH

        FFWallpaper.exe

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\FFWallpaper.exe
        • Size 108KB
        • SHA256 11af3d9b7ea87a65429706c3928fea1312c681bf6558fda53c88727c5266b6dc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        config.ini

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\config.ini
        • Size 183B
        • SHA256 a317a1b42bdbb25b3df78251d166d2b1f2eaa9c308cada945cd83f5c0d46c2f3
        • MD5 SHA1 SHA512 TLSH

        ffwallpaper_sfx.msi

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\ffwallpaper_sfx.msi
        • Size 4.1MB
        • SHA256 a926fc55410b357fa925366723357c420c4b610a53b1252f485e6e126c0f5223
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CommonUI

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\res\theme\CommonUI
        • Size 126KB
        • SHA256 3c0032cccbac9acd05dfac543790cccb5ed2eefcc1b27e13d0de65dc237c7334
        • MD5 SHA1 SHA512 SSDEEP TLSH

        host.dll

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\res\theme\host.dll
        • Size 4.0MB
        • SHA256 7547004468370336c47516493bc895841deda4a35b7f57ad7e118be4ad8875ac
        • MD5 SHA1 SHA512 SSDEEP TLSH

        startup.log

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\startup.log
        • Size 315B
        • SHA256 7fffb17eb8f53a4b53c5fe081af17e73fd68ec338abe2c23d1c3513247fc2343
        • MD5 SHA1 SHA512 TLSH

        startup.log

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\startup.log
        • Size 593B
        • SHA256 ce0ce2322d9df7323e1e26f9cc5c5d70a359bc35b2f2eb9132c29133965b0232
        • MD5 SHA1 SHA512 TLSH

        startup.log

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\startup.log
        • Size 1KB
        • SHA256 d51d657b8f49642c452124dc563f7f296e66f81c10bba67edc3f6e5e692855f8
        • MD5 SHA1 SHA512 TLSH

        startup.log

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\startup.log
        • Size 1KB
        • SHA256 e3b123bb5ee6360ddaa546147afa9cc8b7898ceabaf1a9bcce88a8fe3f858a75
        • MD5 SHA1 SHA512 TLSH

        startup.log

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\startup.log
        • Size 1KB
        • SHA256 1059605bf9050406f913f9dc8eeddb38a1acbd94fcb2116079a19086755e6f4a
        • MD5 SHA1 SHA512 TLSH

        startup.log

        • Path C:\Users\Admin\AppData\Roaming\instagram\13104742651\startup.log
        • Size 1KB
        • SHA256 95730b7161b37f1433c57481fe04ec803bd672bb20a900d52033a377ca80b745
        • MD5 SHA1 SHA512 TLSH

        MSI7C10.tmp

        • Path C:\Windows\Installer\MSI7C10.tmp
        • Size 999KB
        • SHA256 113cf8da1136187e3aa2ac96cc29c21ebb92a29dcf9e4eeaa36524c00dee8e76
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1820-1-0x0000000000F30000-0x0000000001019000-memory.dmp

        memory/1820-9-0x0000000000F30000-0x0000000001019000-memory.dmp

        memory/2336-130-0x0000000000F30000-0x0000000001019000-memory.dmp

        memory/2336-10-0x0000000000F30000-0x0000000001019000-memory.dmp

        memory/2740-185-0x000001D391AD0000-0x000001D392474000-memory.dmp

        memory/4272-122-0x00000000005F0000-0x0000000000A3B000-memory.dmp

        memory/4272-16-0x00000000010E0000-0x00000000010E1000-memory.dmp

        memory/4464-8-0x0000000000830000-0x0000000000C7B000-memory.dmp

        memory/4464-6-0x0000000001450000-0x0000000001451000-memory.dmp

        memory/4480-174-0x00000000749F0000-0x0000000074DFD000-memory.dmp

        memory/4480-177-0x00000000749F0000-0x0000000074DFD000-memory.dmp

        memory/4480-96-0x0000000010000000-0x0000000010028000-memory.dmp