Analysis

  • max time kernel
    146s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/07/2024, 07:26

General

  • Target
    Montants à justifier_DGFIP45921-2.vbs
  • Size 352KB
  • Sample240708-h9s6fa1bjf
  • SHA256 ea21df3506bd3e847b7d8c8b17ab681431ea616d48fc67e58352bc187fe81f7d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

C2
  • fudisa.com:58538

Attributes
  • Install_directory

    %AppData%

  • install_file

    Notepad++.exe

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • mparrain10.duckdns.org:24124

Mutex
  • bgBnpZsYijmcMpUV

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 3 IoCs
  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 9 IoCs

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

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Montants à justifier_DGFIP45921-2.vbs"
    1⤵
      PID:1620
    • C:\Windows\System32\WScript.exe
      C:\Windows\System32\WScript.exe "C:\Users\Admin\asy3.vbs"
      1⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4988
      • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"
        2⤵
        • Drops file in System32 directory
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4288
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
          3⤵
          • Drops startup file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:4844
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4844 -s 2076
            4⤵
            • Program crash
            PID:3248
        • C:\Windows\system32\wermgr.exe
          "C:\Windows\system32\wermgr.exe" "-outproc" "0" "4288" "2856" "2808" "2860" "0" "0" "2864" "0" "0" "0" "0" "0"
          3⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          PID:2448
      • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"
        2⤵
        • Drops file in System32 directory
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3508
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
          3⤵
          • Drops startup file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1776
        • C:\Windows\system32\wermgr.exe
          "C:\Windows\system32\wermgr.exe" "-outproc" "0" "3508" "2896" "2832" "2900" "0" "0" "2904" "0" "0" "0" "0" "0"
          3⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          PID:2712
      • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"
        2⤵
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3720
        • C:\Windows\system32\wermgr.exe
          "C:\Windows\system32\wermgr.exe" "-outproc" "0" "3720" "2732" "2664" "2736" "0" "0" "2740" "0" "0" "0" "0" "0"
          3⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          PID:4656
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4844 -ip 4844
      1⤵
        PID:4712
      • C:\Program Files\VideoLAN\VLC\vlc.exe
        "C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\SyncGroup.WTV"
        1⤵
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:4632

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            powershell.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
            • Size 3KB
            • SHA256 d4af1948337d0deb725f4f2b1fe1a9b60f4519841e28748b11bfd62ccd71e028
            • MD5 SHA1 SHA512

            ModuleAnalysisCache

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
            • Size 53KB
            • SHA256 4ebde1c12625cb55034d47e5169f709b0bd02a8caa76b5b9854efad7f4710245
            • MD5 SHA1 SHA512 SSDEEP

            StartupProfileData-Interactive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
            • Size 2KB
            • SHA256 c2d8dc5712917d6d545e3ce189ddd6beae5355de06a29e1728c1073718783ae5
            • MD5 SHA1 SHA512

            StartupProfileData-Interactive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
            • Size 3KB
            • SHA256 48b7a3f9b77f9ca8c6e20c9a35dfc8068ad8006f43e6e94c2c46fdb9c35c15c5
            • MD5 SHA1 SHA512

            __PSScriptPolicyTest_n4jyxiap.doi.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_n4jyxiap.doi.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512

            ConsoleHost_history.txt

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\PowerShell\PSReadLine\ConsoleHost_history.txt
            • Size 230B
            • SHA256 8b5d267bf8af05b8181abe36234fae9b9ce19a06875fc09b62d7b88240e5820a
            • MD5 SHA1 SHA512

            590aee7bdd69b59b.customDestinations-ms

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
            • Size 6KB
            • SHA256 44b65cf1f7624bd22f42b45061a9ea51cc40cd19ff12a39fe1534e752b56fdd2
            • MD5 SHA1 SHA512 SSDEEP

            590aee7bdd69b59b.customDestinations-ms

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
            • Size 6KB
            • SHA256 390b019fad0b1a43f02c1aea377f28b2d5d168bd01619aeca51a63a9f0441351
            • MD5 SHA1 SHA512 SSDEEP

            590aee7bdd69b59b.customDestinations-ms

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
            • Size 6KB
            • SHA256 42884de82210451b270eec56549ab25d3a52c6fa359ce0f9107a09a9e20d3e16
            • MD5 SHA1 SHA512 SSDEEP

            Notepad++.lnk

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Notepad++.lnk
            • Size 783B
            • SHA256 c742a748d3145e958620cadaf3dd07ca5e2874722838b3f48316ac447b8d1838
            • MD5 SHA1 SHA512

            Notepad++.exe

            • Path C:\Users\Admin\AppData\Roaming\Notepad++.exe
            • Size 42KB
            • SHA256 c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a
            • MD5 SHA1 SHA512 SSDEEP

            asy3.vbs

            • Path C:\Users\Admin\asy3.vbs
            • Size 1KB
            • SHA256 01d5fd9a203634b7d45a547cdf72a1edcd601340f37892c324b5f842b22c7b73
            • MD5 SHA1 SHA512

            memory/4288-17-0x00000144F4590000-0x00000144F459A000-memory.dmp

            memory/4288-18-0x00000144F45A0000-0x00000144F45AC000-memory.dmp

            memory/4288-15-0x00000144F6A80000-0x00000144F6AF6000-memory.dmp

            memory/4288-14-0x00000144F45C0000-0x00000144F4604000-memory.dmp

            memory/4288-13-0x00000144DC310000-0x00000144DC332000-memory.dmp

            memory/4632-108-0x00007FFE1CF00000-0x00007FFE1DFB0000-memory.dmp

            memory/4632-107-0x00007FFE203F0000-0x00007FFE206A6000-memory.dmp

            memory/4632-106-0x00007FFE236F0000-0x00007FFE23724000-memory.dmp

            memory/4632-105-0x00007FF7672B0000-0x00007FF7673A8000-memory.dmp

            memory/4844-29-0x0000000004F40000-0x0000000004FDC000-memory.dmp

            memory/4844-41-0x0000000007450000-0x000000000749C000-memory.dmp

            memory/4844-40-0x00000000070A0000-0x00000000073F4000-memory.dmp

            memory/4844-39-0x0000000006F40000-0x000000000705E000-memory.dmp

            memory/4844-38-0x0000000006CA0000-0x0000000006CAE000-memory.dmp

            memory/4844-37-0x0000000006390000-0x00000000063F6000-memory.dmp

            memory/4844-36-0x0000000005B80000-0x0000000005B8A000-memory.dmp

            memory/4844-35-0x0000000006170000-0x0000000006202000-memory.dmp

            memory/4844-34-0x0000000005BC0000-0x0000000006164000-memory.dmp

            memory/4844-19-0x0000000000400000-0x0000000000418000-memory.dmp