Analysis

  • max time kernel
    147s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08/03/2023, 09:08

General

  • Target

    Rech.doc

  • Size

    544.3MB

  • MD5

    03a4b5b411f8705e8f20b3e994bae110

  • SHA1

    778e6b3a2fc573ce19c7a7224f4bd4b304c55472

  • SHA256

    de8081cfbb09b591530ae0d10a274e5c308e076f79512323b5c2d5dc590c4498

  • SHA512

    1f1c4abfa9ac5e07f392e5c57c282730210fc6adb5f3960e37fc8e2bbaa92d731086dade7d8bf4e33de7c8d4c1800b3a1a1dc4e5a6b461dd581bac0093c15b25

  • SSDEEP

    6144:xPn4VZXbatu7MDogsDkHS50LdfcGcbz1f5M9KTFrMpSlMK3Ru+Q28:xP4PbNMkgg3Ru+x

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Loads dropped DLL 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
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 18 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\Rech.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:832
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\100856.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1920
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\100856.tmp"
        3⤵
        • Loads dropped DLL
        PID:1688
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1364

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\100856.tmp

            Filesize

            543.7MB

            MD5

            10d06673f1cdeb8164c37974f22af5e6

            SHA1

            2410d65e5d971d4793e26601ae79aabc3b780811

            SHA256

            0ea8aa916237b8c56266eaa242153eff8f19dd85ade9d6bc0c3c065909415325

            SHA512

            b4142923c6a1c37208f95e59cfb09b4ff885503b0d115a77bf38bc957ee8931b24aeef1895f8e4ff0f7fe7ad3c1eabe3a3c21e9c2b83794a5950ee4f83ce060b

          • C:\Users\Admin\AppData\Local\Temp\100900.zip

            Filesize

            879KB

            MD5

            7d74461b5fd70928dc244547869f8244

            SHA1

            0a69beecdd517a2b9e618147856367fceae23bd4

            SHA256

            335051721cda978a48a4e088a1d1cdf3c982a46a64d438fc153b187eef2eb86b

            SHA512

            4f7c40b88e1abfc258d3a8ae620b1c70c47996f57041d39435f32dcbcc7d318dbc48ca41262a2604dd468db15a30532edab8358b5dc8ee8b1f5f16f02a7d20eb

          • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

            Filesize

            20KB

            MD5

            54da8f045a7abfd22ca5508639adef3f

            SHA1

            170f556b2d1e38156b56ce65be02154ab8b43f2e

            SHA256

            f43bbdb4e4e18790a457e29e4206965115b8a78027c2ec579411784db6177619

            SHA512

            7d0f503832c52d6bb16b159cdbfd6cf433f1bc8475ccb5e7581551f071d2ec55e8671407f5dda5e66574c527a13aa26789a70de11e41512ffe3ff8f6f252c9c4

          • \Users\Admin\AppData\Local\Temp\100856.tmp

            Filesize

            543.7MB

            MD5

            10d06673f1cdeb8164c37974f22af5e6

            SHA1

            2410d65e5d971d4793e26601ae79aabc3b780811

            SHA256

            0ea8aa916237b8c56266eaa242153eff8f19dd85ade9d6bc0c3c065909415325

            SHA512

            b4142923c6a1c37208f95e59cfb09b4ff885503b0d115a77bf38bc957ee8931b24aeef1895f8e4ff0f7fe7ad3c1eabe3a3c21e9c2b83794a5950ee4f83ce060b

          • \Users\Admin\AppData\Local\Temp\100856.tmp

            Filesize

            543.7MB

            MD5

            10d06673f1cdeb8164c37974f22af5e6

            SHA1

            2410d65e5d971d4793e26601ae79aabc3b780811

            SHA256

            0ea8aa916237b8c56266eaa242153eff8f19dd85ade9d6bc0c3c065909415325

            SHA512

            b4142923c6a1c37208f95e59cfb09b4ff885503b0d115a77bf38bc957ee8931b24aeef1895f8e4ff0f7fe7ad3c1eabe3a3c21e9c2b83794a5950ee4f83ce060b

          • memory/832-78-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-97-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-59-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-60-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-61-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-62-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-64-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-63-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-65-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-66-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-67-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-68-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-69-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-70-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-71-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-72-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-73-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-74-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-76-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-75-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-77-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-57-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-79-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-80-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-58-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-83-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-81-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-84-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-85-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-86-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-87-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-89-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-88-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-91-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-90-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-92-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-93-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-95-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-94-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-96-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-98-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-82-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-99-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-100-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-112-0x0000000000770000-0x0000000000870000-memory.dmp

            Filesize

            1024KB

          • memory/832-1077-0x00000000062A0000-0x00000000062A1000-memory.dmp

            Filesize

            4KB

          • memory/832-1269-0x00000000062A0000-0x00000000062A1000-memory.dmp

            Filesize

            4KB

          • memory/832-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1688-1268-0x0000000000130000-0x0000000000131000-memory.dmp

            Filesize

            4KB