Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    29/09/2026, 14:21

General

  • Target
    MR-2026-135.MSI.msi
  • Size 564KB
  • Sample260929-rn3x7asapb
  • SHA256 c571da34ec2edce2816ff4092ab21abc6250a6c410ee1f54586f2170a2d5010f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • agenttesla

Credentials

Signatures

  • Family: AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Executes dropped EXE 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 48 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 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 2 IoCs
  • Drops file in Windows directory 9 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 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.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • outlook_office_path 1 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\MR-2026-135.MSI.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3972
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5104
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3268
      • C:\Windows\system32\cmd.exe
        cmd.exe /c if /i "YES"=="YES" if not exist "GWRKAJVJWDMRYLNB.mui" echo %RANDOM%%RANDOM%%RANDOM%> "GWRKAJVJWDMRYLNB.mui"
        2⤵
        • Executes a command shell one-liner
        PID:3120
      • C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\GWRKAJVJWDMRYLNB.EXE
        "C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\GWRKAJVJWDMRYLNB.EXE" "C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\GWRKAJVJWDMRYLNB.ttf"
        2⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        PID:2892
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c whoami
          3⤵
          • Executes a command shell one-liner
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1996
          • C:\Windows\SysWOW64\whoami.exe
            whoami
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2792
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c schtasks /query /tn "GWRKAJVJWDMRYLNB" 2>nul
          3⤵
          • Executes a command shell one-liner
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1896
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /query /tn "GWRKAJVJWDMRYLNB"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3252
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c schtasks /create /sc minute /mo 15 /tn "GWRKAJVJWDMRYLNB" /tr "cmd /c \"C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\BNLYRMDWJVJAKRWG.url\"" /ru "huazrasc\admin" /f /it
          3⤵
          • Executes a command shell one-liner
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:508
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /sc minute /mo 15 /tn "GWRKAJVJWDMRYLNB" /tr "cmd /c \"C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\BNLYRMDWJVJAKRWG.url\"" /ru "huazrasc\admin" /f /it
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2712
      • C:\Windows\system32\msiexec.exe
        msiexec.exe /x {A119A541-66BD-4D84-BCF1-4EBCB552E069} /qn /norestart
        2⤵
          PID:3316
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Checks SCSI registry key(s)
        • Suspicious use of AdjustPrivilegeToken
        PID:464
      • C:\Windows\system32\cmd.exe
        cmd
        1⤵
          PID:3316

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              e58d33a.rbs

              • Path C:\Config.Msi\e58d33a.rbs
              • Size 8KB
              • SHA256 fbbc603d95cfb6ca6f205dc62cc9cf548e6113b91332fba5bade3081bab9ae24
              • MD5 SHA1 SHA512 SSDEEP TLSH

              e58d33e.rbs

              • Path C:\Config.Msi\e58d33e.rbs
              • Size 7KB
              • SHA256 ae5bc86a327d6c466812dd011d932180c7c145789cf57629fd52bba6c17db953
              • MD5 SHA1 SHA512 SSDEEP TLSH

              GWRKAJVJWDMRYLNB.exe

              • Path C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\GWRKAJVJWDMRYLNB.exe
              • Size 499KB
              • SHA256 d447a06cba8d3dbe80e09d73dd64576836b258961ee0d3ba56cf26cea7962b49
              • MD5 SHA1 SHA512 SSDEEP TLSH

              GWRKAJVJWDMRYLNB.mui

              • Path C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\GWRKAJVJWDMRYLNB.mui
              • Size 17B
              • SHA256 d9765773908e5045cbcc63207fe78583a4a85787f528305f99bfe52572bdcac4
              • MD5 SHA1 SHA512

              GWRKAJVJWDMRYLNB.ttf

              • Path C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\GWRKAJVJWDMRYLNB.ttf
              • Size 545KB
              • SHA256 bcf886dcbf0becb78f44efbd7805b0c40996340d300dfddf863aa5dda4c23fdd
              • MD5 SHA1 SHA512 SSDEEP TLSH

              e58d33b.msi

              • Path C:\Windows\Installer\e58d33b.msi
              • Size 564KB
              • SHA256 c571da34ec2edce2816ff4092ab21abc6250a6c410ee1f54586f2170a2d5010f
              • MD5 SHA1 SHA512 SSDEEP TLSH

              metadata-2

              • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
              • Size 24.1MB
              • SHA256 aa115302cae67541be12d81eeee527b669baa465d585c706668f560eabb52185
              • MD5 SHA1 SHA512 SSDEEP TLSH

              {79cbcb3d-755a-47d5-a213-6d2bd5e895d1}_OnDiskSnapshotProp

              • Path \??\Volume{efdbfdc7-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{79cbcb3d-755a-47d5-a213-6d2bd5e895d1}_OnDiskSnapshotProp
              • Size 6KB
              • SHA256 8a4b6a888b7129caadf994fc6bda8d6880168df07629119de16d179bb147a4a7
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/2892-26-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-33-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-77-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-87-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-86-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-85-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-84-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-83-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-82-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-81-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-80-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-79-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-78-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-76-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-75-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-74-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-73-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-72-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-71-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-70-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-69-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-68-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-67-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-66-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-65-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-64-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-63-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-62-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-61-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-60-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-59-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-58-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-57-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-56-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-55-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-54-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-53-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-52-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-51-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-50-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-49-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-48-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-47-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-46-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-45-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-44-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-43-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-42-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-41-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-40-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-39-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-38-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-37-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-35-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-36-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-32-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-31-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-30-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-29-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-28-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-27-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-25-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-34-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-24-0x000000007FE40000-0x000000007FE50000-memory.dmp

              memory/2892-1423-0x0000000003A60000-0x0000000003AA4000-memory.dmp

              memory/2892-1424-0x000000002A070000-0x000000002A614000-memory.dmp

              memory/2892-1425-0x000000002A620000-0x000000002A686000-memory.dmp

              memory/2892-1426-0x000000002B2F0000-0x000000002B382000-memory.dmp

              memory/2892-1427-0x000000002B400000-0x000000002B450000-memory.dmp

              memory/2892-1428-0x000000002B640000-0x000000002B64A000-memory.dmp