Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    25/09/2026, 08:24

General

  • Target
    Potvrdenie novej objednávky.PDF.exe
  • Size 1.0MB
  • Sample260925-ka8syswyez
  • SHA256 e0907a6a8bc42246d371ed78a42235838b1135fd6a32e5fd5caa7fcf48eb7696
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Formbook payload 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • SmartAssembly .NET packer 1 IoCs

    Detects SmartAssembly .NET packer.

  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 46 IoCs
  • Suspicious behavior: MapViewOfSection 1 TTPs 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of UnmapMainImage 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • outlook_office_path 1 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    PID:3288
    • C:\Users\Admin\AppData\Local\Temp\Potvrdenie novej objednávky.PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\Potvrdenie novej objednávky.PDF.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4652
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Potvrdenie novej objednávky.PDF.exe"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2960
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        PID:2864
  • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$n4vbgx=[System.Environment]::TickCount;$1uynlu=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('U3RhcnQtUHJvY2Vzcw==')));$n4vbgx=[System.Environment]::TickCount;$0syqhp=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXGNaYS5leGU=')));$vdsyp5=$env:COMPUTERNAME;& $1uynlu -FilePath $0syqhp"
    1⤵
    • Command and Scripting Interpreter: PowerShell
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4376
    • C:\Users\Admin\AppData\Roaming\cZa.exe
      "C:\Users\Admin\AppData\Roaming\cZa.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4152
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\cZa.exe"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4140
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        3⤵
          PID:3904
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
          3⤵
            PID:4036
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
            3⤵
              PID:2548
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
              3⤵
                PID:3672
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:4848
          • C:\Windows\SysWOW64\cmmon32.exe
            "C:\Windows\SysWOW64\cmmon32.exe"
            1⤵
            • Accesses Microsoft Outlook profiles
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Modifies Internet Explorer settings
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            • outlook_office_path
            PID:3440
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe"
              2⤵
                PID:1496
              • C:\Program Files\Mozilla Firefox\Firefox.exe
                "C:\Program Files\Mozilla Firefox\Firefox.exe"
                2⤵
                  PID:4236
              • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                1⤵
                  PID:2776
                • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                  "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                  1⤵
                    PID:5076

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

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                        Downloads

                        powershell.exe.log

                        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
                        • Size 2KB
                        • SHA256 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
                        • MD5 SHA1 SHA512 TLSH

                        StartupProfileData-NonInteractive

                        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                        • Size 18KB
                        • SHA256 6178559bd6db49e30cd0c3ee86bb8b8f56934a0b34713f07a7da51e0dfc65da2
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        __PSScriptPolicyTest_k2tkarab.qfj.ps1

                        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_k2tkarab.qfj.ps1
                        • Size 60B
                        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                        • MD5 SHA1 SHA512 TLSH

                        cZa.exe

                        • Path C:\Users\Admin\AppData\Roaming\cZa.exe
                        • Size 1.0MB
                        • SHA256 e0907a6a8bc42246d371ed78a42235838b1135fd6a32e5fd5caa7fcf48eb7696
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        memory/1496-102-0x0000022958390000-0x0000022958491000-memory.dmp

                        memory/2864-17-0x0000000001300000-0x000000000164A000-memory.dmp

                        memory/2864-71-0x0000000000BE0000-0x0000000000C26000-memory.dmp

                        memory/2864-69-0x0000000000BE0000-0x0000000000C26000-memory.dmp

                        memory/2864-41-0x0000000000BE0000-0x0000000000C26000-memory.dmp

                        memory/2864-12-0x0000000000400000-0x0000000000446000-memory.dmp

                        memory/2864-13-0x0000000000BE0000-0x0000000000C26000-memory.dmp

                        memory/2960-16-0x0000000002570000-0x00000000025A6000-memory.dmp

                        memory/2960-59-0x0000000007260000-0x000000000726A000-memory.dmp

                        memory/2960-18-0x0000000004A60000-0x0000000004A70000-memory.dmp

                        memory/2960-15-0x0000000004A60000-0x0000000004A70000-memory.dmp

                        memory/2960-19-0x00000000050A0000-0x00000000056C8000-memory.dmp

                        memory/2960-21-0x0000000004F30000-0x0000000004F96000-memory.dmp

                        memory/2960-22-0x0000000004FA0000-0x0000000005006000-memory.dmp

                        memory/2960-20-0x0000000004E90000-0x0000000004EB2000-memory.dmp

                        memory/2960-65-0x0000000007530000-0x0000000007538000-memory.dmp

                        memory/2960-28-0x0000000005810000-0x0000000005B64000-memory.dmp

                        memory/2960-31-0x0000000005ED0000-0x0000000005EEE000-memory.dmp

                        memory/2960-32-0x0000000005F60000-0x0000000005FAC000-memory.dmp

                        memory/2960-64-0x0000000007550000-0x000000000756A000-memory.dmp

                        memory/2960-63-0x0000000007450000-0x0000000007464000-memory.dmp

                        memory/2960-62-0x0000000007440000-0x000000000744E000-memory.dmp

                        memory/2960-47-0x0000000071210000-0x000000007125C000-memory.dmp

                        memory/2960-55-0x0000000006480000-0x000000000649E000-memory.dmp

                        memory/2960-46-0x00000000064A0000-0x00000000064D2000-memory.dmp

                        memory/2960-56-0x00000000064F0000-0x0000000006593000-memory.dmp

                        memory/2960-58-0x00000000071F0000-0x000000000720A000-memory.dmp

                        memory/2960-57-0x0000000007830000-0x0000000007EAA000-memory.dmp

                        memory/2960-61-0x0000000007410000-0x0000000007421000-memory.dmp

                        memory/2960-60-0x0000000007490000-0x0000000007526000-memory.dmp

                        memory/3288-73-0x0000000008FD0000-0x0000000009095000-memory.dmp

                        memory/3440-70-0x0000000000B80000-0x0000000000BC3000-memory.dmp

                        memory/3440-72-0x0000000000B80000-0x0000000000BC3000-memory.dmp

                        memory/4140-96-0x0000000007230000-0x00000000072D3000-memory.dmp

                        memory/4140-97-0x0000000007510000-0x0000000007521000-memory.dmp

                        memory/4140-100-0x0000000007540000-0x0000000007554000-memory.dmp

                        memory/4140-88-0x0000000070350000-0x000000007039C000-memory.dmp

                        memory/4140-86-0x0000000006540000-0x000000000658C000-memory.dmp

                        memory/4140-84-0x0000000005A90000-0x0000000005DE4000-memory.dmp

                        memory/4236-106-0x0000021E52380000-0x0000021E52494000-memory.dmp

                        memory/4376-39-0x0000018B55110000-0x0000018B55132000-memory.dmp

                        memory/4652-7-0x0000000005B20000-0x0000000005B30000-memory.dmp

                        memory/4652-6-0x0000000005D90000-0x0000000005DAA000-memory.dmp

                        memory/4652-2-0x0000000005900000-0x0000000005992000-memory.dmp

                        memory/4652-3-0x0000000005B20000-0x0000000005B30000-memory.dmp

                        memory/4652-4-0x0000000005A90000-0x0000000005A9A000-memory.dmp

                        memory/4652-0-0x0000000000E00000-0x0000000000F10000-memory.dmp

                        memory/4652-8-0x0000000007100000-0x00000000071E8000-memory.dmp

                        memory/4652-5-0x0000000005BD0000-0x0000000005C6C000-memory.dmp

                        memory/4652-1-0x0000000005EB0000-0x0000000006454000-memory.dmp