Analysis

  • max time kernel
    109s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    09-03-2023 13:36

General

  • Target

    0419675272807527999__2023-08-03_1602.doc

  • Size

    504.3MB

  • MD5

    237e055e64b8ca9b54e2217646bfc60e

  • SHA1

    30cd06e2e15ccfb9b07d62d5f38692a8f6a9b5a4

  • SHA256

    17eca4943b3040c47babe49d2d1f59f4852695e2348fe107ec935e38416e511b

  • SHA512

    99ffa51951c364b941160153ea714a281ebf51cdc6307fffe9405a3ce13442352871134293e61009f3661c184f7827624afdc4ca1edc5d54c86e24b2c322b8e7

  • 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\0419675272807527999__2023-08-03_1602.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:1720
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\143752.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:844
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\143752.tmp"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1880
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\IpJSAvofwYC\FibCBIFiT.dll"
          4⤵
            PID:1408
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:1808

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\143752.tmp

        Filesize

        543.7MB

        MD5

        1cd2550e072ec2792339b133005549ed

        SHA1

        c2839a8bc63517bcee9ec16a222690e0f8aa3a74

        SHA256

        af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

        SHA512

        e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

      • C:\Users\Admin\AppData\Local\Temp\143758.zip

        Filesize

        867KB

        MD5

        6c839d892fef2f37d973ca28ce5e7a3b

        SHA1

        175ee07dc770ad81455d1f95152f1ae07e875e0e

        SHA256

        b2f19314b692f584203e6711e8d54f32b91a7864adbd203a4eaf6785042d47d9

        SHA512

        18a1ffa1876554a0e7716cbe5d77ce26a373aeb16992986bb8baaece2af502b576d7001a4271ceda09cec6fbbe750c06c8d40d4449ff8b52d01a924a49462af7

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

        Filesize

        20KB

        MD5

        78adf32d4e71d29af209c612475b1dc0

        SHA1

        b1922539b0541ff01334293e23c66f6df6c00bfe

        SHA256

        bd19b7bac73cd07cef349e899bb43c44aaef528c3a252b72d485870207e3d05e

        SHA512

        45c7b51e5233519e04fd62a2ea2ef906d0749d99d5a3711946ec3b440e554577b9694d8274e23c7334519893a2aefbbccaf5861850836d06322096ff7a8384ad

      • \Users\Admin\AppData\Local\Temp\143752.tmp

        Filesize

        543.7MB

        MD5

        1cd2550e072ec2792339b133005549ed

        SHA1

        c2839a8bc63517bcee9ec16a222690e0f8aa3a74

        SHA256

        af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

        SHA512

        e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

      • \Users\Admin\AppData\Local\Temp\143752.tmp

        Filesize

        543.7MB

        MD5

        1cd2550e072ec2792339b133005549ed

        SHA1

        c2839a8bc63517bcee9ec16a222690e0f8aa3a74

        SHA256

        af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

        SHA512

        e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

      • memory/1408-1270-0x00000000000C0000-0x00000000000C1000-memory.dmp

        Filesize

        4KB

      • memory/1720-82-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-86-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-59-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-61-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-60-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-62-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-63-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-66-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-67-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-70-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-69-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-71-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-72-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-73-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-74-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-75-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-77-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-78-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-81-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-80-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-57-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-83-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-84-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-58-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-88-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-89-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-90-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-92-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-94-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-93-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-95-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-96-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-91-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-98-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-87-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-97-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-85-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-79-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-76-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-68-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-65-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-64-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-99-0x0000000000670000-0x0000000000770000-memory.dmp

        Filesize

        1024KB

      • memory/1720-1077-0x00000000060E0000-0x00000000060E1000-memory.dmp

        Filesize

        4KB

      • memory/1720-1271-0x00000000060E0000-0x00000000060E1000-memory.dmp

        Filesize

        4KB

      • memory/1720-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1880-1264-0x00000000003A0000-0x00000000003A1000-memory.dmp

        Filesize

        4KB