Analysis

  • user interaction
    yes
  • max time kernel
    599s
  • max time network
    593s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-ja
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-jalocale:ja-jpos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 18:27

General

  • Target
    -A2026804002105.zip
  • Size 4.0MB
  • Sample260804-w3tehsxdkf
  • SHA256 194845853f864088bc9fae5c0b2f692f6d6b1564f41111041247b3f86d356f30
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: valleyrat
  • Windows_Trojan_Winos_464b8a2e 5 IoCs
  • https://www.esentire.com/blog/winos4-0-online-module-staging-component-used-in-cleversoar-campaign 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 TTPs 3 IoCs

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

  • Discovers running processes 1 TTPs 9 IoCs

    Running process information can be used to identify security tools or plan follow-on actions.

  • Executes a command shell one-liner 1 TTPs 3 IoCs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 35 IoCs

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

  • Delays execution with timeout.exe 9 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\-A2026804002105.zip
    1⤵
      PID:3316
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:3508
      • \??\D:\Vat.N0.20260804110703.EXE
        "D:\Vat.N0.20260804110703.EXE"
        1⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4608
        • C:\Windows\SysWOW64\cmd.exe
          /c C:\Windows\System32\ComputerDefaults.exe
          2⤵
          • Executes a command shell one-liner
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:5804
          • C:\Windows\SysWOW64\ComputerDefaults.exe
            C:\Windows\System32\ComputerDefaults.exe
            3⤵
            • Enumerates connected drives
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:5176
            • C:\ProgramData\S-1-5-21-1668793073-1147019296-3234184967-3446\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
              "MicrosoftEdgeComRegisterShellARM64.exe"
              4⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Enumerates connected drives
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:4244
              • C:\Windows\SysWOW64\taskkill.exe
                taskkill /f /im cmd.exe
                5⤵
                • System Location Discovery: System Language Discovery
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:5976
              • C:\Windows\SysWOW64\cmd.exe
                cmd.exe /c start "" /B cmd /C C:\Users\Admin\AppData\Local\Temp\8821E12759AD7B6395C.CMD
                5⤵
                • Executes a command shell one-liner
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:3988
                • C:\Windows\SysWOW64\cmd.exe
                  cmd /C C:\Users\Admin\AppData\Local\Temp\8821E12759AD7B6395C.CMD
                  6⤵
                  • Executes a command shell one-liner
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:3148
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1424
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:1468
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:4468
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4944
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:1740
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:5424
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:5984
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:5416
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:4864
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:5760
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:3428
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:5440
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3536
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:2424
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:612
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4940
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:5452
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:1172
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4776
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:3840
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:4432
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1720
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:908
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:6044
                  • C:\Windows\SysWOW64\tasklist.exe
                    TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                    7⤵
                    • Discovers running processes
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4116
                  • C:\Windows\SysWOW64\find.exe
                    FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    PID:2120
                  • C:\Windows\SysWOW64\timeout.exe
                    TIMEOUT /t 60 /nobreak
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:2308
      • C:\ProgramData\S-1-5-21-1668793073-1147019296-3234184967-3446\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
        C:\ProgramData\S-1-5-21-1668793073-1147019296-3234184967-3446\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3332
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 1460
          2⤵
          • Program crash
          PID:3276
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3332 -ip 3332
        1⤵
          PID:2016
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k GPSvcGroup
          1⤵
            PID:6112

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                MicrosoftEdgeComRegisterShellARM64.exe

                • Path C:\ProgramData\S-1-5-21-1668793073-1147019296-3234184967-3446\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
                • Size 3.5MB
                • SHA256 b869fbddbda07a9b4e511f533b4b7ac2a161cc88dae0519e0e55347c74db94a8
                • MD5 SHA1 SHA512 SSDEEP TLSH

                pdfCORe8.dLL

                • Path C:\ProgramData\S-1-5-21-1668793073-1147019296-3234184967-3446\SystemAppData\pdfCORe8.dLL
                • Size 3.8MB
                • SHA256 f856bcab6dc2d2c4a047202d301f23b6b9e9ffe5ef5c85b5431bff69442ae95f
                • MD5 SHA1 SHA512 SSDEEP TLSH

                0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A
                • Size 727B
                • SHA256 dc2b74355ccbf980b546d102d07f62ae3754965fde8bcb1c9532efefe23f6066
                • MD5 SHA1 SHA512 TLSH

                698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
                • Size 471B
                • SHA256 be28306753fbcd10dfdccc0d803daf45cb9d8820d5d9f5ce83f7716d37584923
                • MD5 SHA1 SHA512 TLSH

                8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60
                • Size 727B
                • SHA256 9ae2e1c28447bfe69ff169012d873d11a0c43001af635b114493e8177e7e9373
                • MD5 SHA1 SHA512 TLSH

                C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
                • Size 727B
                • SHA256 895f3912ab7d818c60f98dfe7195fdcc1d1544a4eec908350eac31e7bf0fbcdc
                • MD5 SHA1 SHA512 TLSH

                C8E534EE129F27D55460CE17FD628216_64A201640BD8E31E72E33FB1EBF9962D

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_64A201640BD8E31E72E33FB1EBF9962D
                • Size 727B
                • SHA256 53c60c9910c857fa3f02c1db2a222d556998d9914fb472f4e3324b39be887813
                • MD5 SHA1 SHA512 TLSH

                0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A
                • Size 400B
                • SHA256 78f0188dafe09e10c1bde7100ae2a5c9c9f02709d7eb507f645838701f3c2ddd
                • MD5 SHA1 SHA512 TLSH

                698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
                • Size 400B
                • SHA256 293f3549cf606054253681b191b3607364bfb3f01bfd33d5b25980580e68a107
                • MD5 SHA1 SHA512 TLSH

                8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60
                • Size 404B
                • SHA256 39f3473e343b11b80ac876cf62b02977387cdb957c149a02d22287c6e50ba1e0
                • MD5 SHA1 SHA512 TLSH

                C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
                • Size 412B
                • SHA256 45017aafb89673430c136eb47a7e2d82db6e29791b94192dd009a6bf6080dcff
                • MD5 SHA1 SHA512 TLSH

                C8E534EE129F27D55460CE17FD628216_64A201640BD8E31E72E33FB1EBF9962D

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_64A201640BD8E31E72E33FB1EBF9962D
                • Size 416B
                • SHA256 45a8c1d14e5fcc8a5ba889db22769b763f0048e893de2bea216ae8b9e2bd462b
                • MD5 SHA1 SHA512 TLSH

                8821E12759AD7B6395C.CMD

                • Path C:\Users\Admin\AppData\Local\Temp\8821E12759AD7B6395C.CMD
                • Size 1KB
                • SHA256 522ac211cc3ab363722dbc6300df7787467cfe35d91652afafb2fa5b678456cc
                • MD5 SHA1 SHA512 TLSH

                memory/4244-33-0x0000000004A50000-0x0000000004AA8000-memory.dmp

                memory/4244-34-0x0000000004A50000-0x0000000004AA8000-memory.dmp

                memory/4244-36-0x0000000004A50000-0x0000000004AA8000-memory.dmp

                memory/4244-37-0x0000000004A50000-0x0000000004AA8000-memory.dmp

                memory/4244-38-0x0000000004A50000-0x0000000004AA8000-memory.dmp