Analysis

  • max time kernel
    104s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08/03/2023, 02:58

General

  • Target

    2023-03-08_1157.doc

  • Size

    548.3MB

  • MD5

    df03ab3720154f245c109759ae06913e

  • SHA1

    1f4ae4072ca354d3337f578b74b7526f7fb2bbee

  • SHA256

    a85fa869a88e0c5464efb2e86ab86b97035374ea96bcc9c59a4fd7f7e3ba5de1

  • SHA512

    cdc65bbde648ac2349b566003be8b6f9f9a74c1439f09faa81d0d3b29ff4037be57d9bbb4a2588847b1ac528cec82c5e205ac02862dfd64cac90ea0c0e3d0b56

  • 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 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\2023-03-08_1157.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:1052
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\035945.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1388
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\035945.tmp"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:572
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\SsahlN\fbov.dll"
          4⤵
            PID:1700
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:1088

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\035945.tmp

              Filesize

              535.7MB

              MD5

              49d805bdd67f596cc1e3ec542257b004

              SHA1

              c5917591ff50ab18122898a38807c188ec58a672

              SHA256

              82c686354cb49727b40f46546e791eafe90ba6a58912a638a43105045e55dc3c

              SHA512

              697256477705b77f6e2df89f35d2e7b5256ab3d60283383be2361b210d4deafa4734f949cfcd160ba915958414881c69e283b0530dfedab5303e1d483befe877

            • C:\Users\Admin\AppData\Local\Temp\035948.zip

              Filesize

              871KB

              MD5

              586c64b6fd7bcf2c5a553612c3b21e45

              SHA1

              f52362a551e938b7508a8efc620335ff05a171ac

              SHA256

              3bc46bd946c948b6b7c7d1cc1280510ae8a7937356fc96c98fb4f1aab23ba1ba

              SHA512

              18c1fdcaa636a0a8b9647f490707c6367b81dff18b8124fb3c7c94a3821a3c678f0357763980e2cd14edbd344d265798cca4dde1dac83a02282ee900cbe631d3

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

              Filesize

              20KB

              MD5

              84a7419af22001e2e9092420601e456f

              SHA1

              2c15000a82773d8e439c9fa00639f8f22e5f0969

              SHA256

              39674b922e6cc7c13af4f311d63eaeb430969ebd684e02d915bbce38071d0bed

              SHA512

              5cb06fb91ebc8bdb9dc6ae00f3529f7cf3acb86ea725043f3dadb9c4dc2854db2142d4e587f8b5d4d0e6db3a520a465a7ae2ab4ebe7e0ec633df99da95aceec3

            • \Users\Admin\AppData\Local\Temp\035945.tmp

              Filesize

              535.7MB

              MD5

              49d805bdd67f596cc1e3ec542257b004

              SHA1

              c5917591ff50ab18122898a38807c188ec58a672

              SHA256

              82c686354cb49727b40f46546e791eafe90ba6a58912a638a43105045e55dc3c

              SHA512

              697256477705b77f6e2df89f35d2e7b5256ab3d60283383be2361b210d4deafa4734f949cfcd160ba915958414881c69e283b0530dfedab5303e1d483befe877

            • \Users\Admin\AppData\Local\Temp\035945.tmp

              Filesize

              535.7MB

              MD5

              49d805bdd67f596cc1e3ec542257b004

              SHA1

              c5917591ff50ab18122898a38807c188ec58a672

              SHA256

              82c686354cb49727b40f46546e791eafe90ba6a58912a638a43105045e55dc3c

              SHA512

              697256477705b77f6e2df89f35d2e7b5256ab3d60283383be2361b210d4deafa4734f949cfcd160ba915958414881c69e283b0530dfedab5303e1d483befe877

            • memory/572-1264-0x00000000001A0000-0x00000000001A1000-memory.dmp

              Filesize

              4KB

            • memory/1052-84-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-95-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/1052-83-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-88-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-92-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-93-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-91-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-90-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-89-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-98-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-97-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-96-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-85-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-94-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-121-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-163-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-205-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-87-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-1077-0x00000000064E0000-0x00000000064E1000-memory.dmp

              Filesize

              4KB

            • memory/1052-86-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-79-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-80-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-82-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB

            • memory/1052-1270-0x00000000064E0000-0x00000000064E1000-memory.dmp

              Filesize

              4KB

            • memory/1052-81-0x00000000007D0000-0x00000000008D0000-memory.dmp

              Filesize

              1024KB