Analysis

  • max time kernel
    103s
  • 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, 03:18

General

  • Target

    8018884277287430213822548__2023-08-03_1114.doc

  • Size

    501.3MB

  • MD5

    0b73336fd74afdbaa04abb044c6733fd

  • SHA1

    1f91b4b74c9643631318b4d58f6660bb4d292782

  • SHA256

    922116d96a87d62e02fb7571b39e943929b3a9774dc3ddc47c503cecae42d0b1

  • SHA512

    99141d9b8694a12e89134c2ebd91b2887a7011df4b44498ff55471314ca57bfeabbf30ee90800d9b68615b7c730fda496123b1083378b2c44457e22df044f3e6

  • 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\8018884277287430213822548__2023-08-03_1114.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:1984
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\041919.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1676
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\041919.tmp"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1468
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\BYArpOtFTSl\srLHTKpWYzgqA.dll"
          4⤵
            PID:2024
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:1476

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\041919.tmp

              Filesize

              504.7MB

              MD5

              d2d28154b6422f22c0493b55cd722b51

              SHA1

              5de6d57279f2049f5b838830a495c1b4622bab22

              SHA256

              a1c06ee02d98af57a0120ca3377fcfa5d8afb3ec740a4e021b8de6f237d1e8be

              SHA512

              8355c72071eed0dfb108830a75cde82242f2a71b087b56ba4b802e668bae43369dd1893cfb95982f5ae7f3d1579a9eca420af119a9530ef2010aa0546cf3509a

            • C:\Users\Admin\AppData\Local\Temp\041923.zip

              Filesize

              867KB

              MD5

              04841567d303b897660134f8db50a4e6

              SHA1

              dbdd9eb1e160fbd9a91acadfad738dc456a79621

              SHA256

              ad9b12a5471edf6180c452dcc70156d505ea049f1173175234a9b246c2672438

              SHA512

              3d9be2c4c2233941198ffa809b07c06876bace9a0075aea29d9750d73b0c5a7cfe88e890ad1cfbb8c593ada99eda4c49f27e2f2724d85c9317fd4b17fc0c318d

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

              Filesize

              20KB

              MD5

              471ff1255bb6831e302c81453cea74c3

              SHA1

              186a09efa435ebbd9b04f14f9ea8700531292ebd

              SHA256

              092ad8600d13bba1ff10f405e2922068a7ae7318ddba7838ce9eb3ee7a4a0c31

              SHA512

              7bfbe46ea74542381813a2f662b0663d68ccba1a24c45c582c0fb37a51011ecdc8e727216533fdba419bbd238b596e78604590ec6d0a83651349911f90148ab2

            • \Users\Admin\AppData\Local\Temp\041919.tmp

              Filesize

              490.4MB

              MD5

              b11d9d3ce7460a8a3014323ee92b5d9f

              SHA1

              7d6650af4f7f80b8c96f8213cb69ca9f2f7cabc8

              SHA256

              b28a976eeb4fb80e2080ee9eca20433be2dad3380821eb5aa984e6daf0631d22

              SHA512

              71690e503398fefd4f8eee73acd9bc427ac713c72360290cb79ee379a1bdb681e7b58c44d8e1ec04a45b0f49744be17ed16b4c652c1f0956c83ea3bff781725f

            • \Users\Admin\AppData\Local\Temp\041919.tmp

              Filesize

              517.9MB

              MD5

              636bb26d0b0b331dfcdadc9cd5576d45

              SHA1

              0f39eacbaa8da828daae23627e704a7b006ded36

              SHA256

              28e02d98e70865967ebe03bd7fb79cadea550eb7f99da6a002b300143e0e84a3

              SHA512

              82f39734124811e41e6c2ff491b25757b594332c0658008bd9783e9498c2f36b4c93bff0c6d520ee205bd43f3f1bf1f7d6a3010d074eb087b728b5b3c2a491b3

            • memory/1468-1264-0x00000000001B0000-0x00000000001B1000-memory.dmp

              Filesize

              4KB

            • memory/1984-85-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-94-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-60-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-59-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-61-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-64-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-70-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-72-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-71-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-73-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-69-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-75-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-76-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-80-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-84-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-87-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-88-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-89-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-86-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-90-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-57-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-92-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-93-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-58-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-98-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-97-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-95-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-99-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-96-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-91-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-83-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-82-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-107-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-81-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-79-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-78-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-77-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-74-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-67-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-68-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-66-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-65-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-63-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-62-0x00000000004A0000-0x00000000005A0000-memory.dmp

              Filesize

              1024KB

            • memory/1984-1077-0x0000000006980000-0x0000000006981000-memory.dmp

              Filesize

              4KB

            • memory/1984-1269-0x0000000006980000-0x0000000006981000-memory.dmp

              Filesize

              4KB

            • memory/1984-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/2024-1270-0x0000000000130000-0x0000000000131000-memory.dmp

              Filesize

              4KB