Analysis

  • max time kernel
    148s
  • max time network
    130s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-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 16 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 4 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
    • Suspicious use of SetWindowsHookEx
    PID:4648
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4672
      • 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:3664
      • C:\Windows\system32\msiexec.exe
        msiexec.exe /x {A119A541-66BD-4D84-BCF1-4EBCB552E069} /qn /norestart
        2⤵
        • Suspicious use of SetWindowsHookEx
        PID:4676
      • 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:1960
        • 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:5876
          • C:\Windows\SysWOW64\whoami.exe
            whoami
            4⤵
            • System Location Discovery: System Language Discovery
            PID:5316
        • 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:5596
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /query /tn "GWRKAJVJWDMRYLNB"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2680
        • 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 "szapmtop\admin" /f /it
          3⤵
          • Executes a command shell one-liner
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1496
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /sc minute /mo 15 /tn "GWRKAJVJWDMRYLNB" /tr "cmd /c \"C:\Users\Admin\Documents\GWRKAJVJWDMRYLNB\BNLYRMDWJVJAKRWG.url\"" /ru "szapmtop\admin" /f /it
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:3388
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:5708
    • C:\Windows\system32\cmd.exe
      cmd
      1⤵
        PID:4332

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e591f85.rbs

            • Path C:\Config.Msi\e591f85.rbs
            • Size 8KB
            • SHA256 1b4a8863f34dd3c93cb42568c83d77c017907ab090432d8b8392a64042a631fa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e591f89.rbs

            • Path C:\Config.Msi\e591f89.rbs
            • Size 7KB
            • SHA256 1836fc4fa16ab614a392041ab4c330b7808d2826d13a82170d589b44263046bb
            • 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 f848d8aacea0773002d09a4917f4b8dedc296f583d20dc2a0593561805003fb7
            • MD5 SHA1 SHA512

            GWRKAJVJWDMRYLNB.ttf

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

            e591f86.msi

            • Path C:\Windows\Installer\e591f86.msi
            • Size 564KB
            • SHA256 c571da34ec2edce2816ff4092ab21abc6250a6c410ee1f54586f2170a2d5010f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 88c498a22505ee19aa03fbc596154b9d0ed3fd6272ada1519eb6dcbac26d89af
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {770f8f08-a33b-4c75-b60b-568fc447646e}_OnDiskSnapshotProp

            • Path \??\Volume{e42a0d43-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{770f8f08-a33b-4c75-b60b-568fc447646e}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 654088ea4789532798fc2028f64a009856cf2bdc5690f47373dac34dc9a1032b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1960-68-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-56-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-88-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-87-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-86-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-84-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-64-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-82-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-81-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-60-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-79-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-78-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-76-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-75-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-74-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-73-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-62-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-61-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-54-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-53-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-52-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-48-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-42-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-36-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-29-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-26-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-85-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-71-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-70-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-69-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-77-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-66-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-67-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-65-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-83-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-40-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-80-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-59-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-58-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-57-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-63-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-55-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-51-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-50-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-49-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-47-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-45-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-44-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-43-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-41-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-39-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-38-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-37-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-34-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-35-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-33-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-32-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-31-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-30-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-27-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-28-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-25-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-24-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-1424-0x0000000003BE0000-0x0000000003C24000-memory.dmp

            memory/1960-1425-0x000000002A0F0000-0x000000002A6AA000-memory.dmp

            memory/1960-1426-0x000000002A7B0000-0x000000002A816000-memory.dmp

            memory/1960-1427-0x000000002B4A0000-0x000000002B532000-memory.dmp

            memory/1960-1428-0x000000002B590000-0x000000002B5E0000-memory.dmp

            memory/1960-72-0x000000007FE90000-0x000000007FEA0000-memory.dmp

            memory/1960-1429-0x000000002C0E0000-0x000000002C0EA000-memory.dmp