Analysis

  • max time kernel
    103s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08/03/2023, 03:14

General

  • Target

    82045004321164546.doc

  • Size

    528.3MB

  • MD5

    6692ccaeebf524525a4eb6de89f6dbc7

  • SHA1

    8b350b5c2cf9ee551513218f2255eec461558048

  • SHA256

    31ef5f1afc2dd841040db0adbb87b093973173aa58c3cbe76235ec29f1f609ad

  • SHA512

    db0af266aa622b8ee855a9ec64d4d1619243980d018370a415672981387ddcac1ad3e6dd53a5be35dbdd58bc55d4cea2a7742aa229e2511a09a2471aaa5522b1

  • 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\82045004321164546.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:1744
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\041452.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1448
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\041452.tmp"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1268
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\RGIuWdur\MzccTpjPsVYey.dll"
          4⤵
            PID:1936
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:2020

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\041452.tmp

              Filesize

              531.7MB

              MD5

              4e7c0febeab7b8257bb5a9a5b41964be

              SHA1

              e113c92df1a8666abd66330a9eb95c8544137db7

              SHA256

              c070bf966a8d0e9a473685e67bf3091ddda302eb9a54425727a325554aa35ed4

              SHA512

              8761395868d23e267bc9f9237698461bede93f8f89c12589662bd996fd1dacab96636998c7e72729f882faac6df12e1640f2e8375c7a66b45668f93f0708c882

            • C:\Users\Admin\AppData\Local\Temp\041455.zip

              Filesize

              867KB

              MD5

              04841567d303b897660134f8db50a4e6

              SHA1

              dbdd9eb1e160fbd9a91acadfad738dc456a79621

              SHA256

              ad9b12a5471edf6180c452dcc70156d505ea049f1173175234a9b246c2672438

              SHA512

              3d9be2c4c2233941198ffa809b07c06876bace9a0075aea29d9750d73b0c5a7cfe88e890ad1cfbb8c593ada99eda4c49f27e2f2724d85c9317fd4b17fc0c318d

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

              Filesize

              20KB

              MD5

              5a582d131d90eb75e01105242fdb804a

              SHA1

              5f4770dd5a5368004bb34b6cbb2fb56a99ca04c7

              SHA256

              27e9dcc73a9c112a4d3b0761d46f913b0bd8e001637a7c13cfd122f9cff99314

              SHA512

              0cc1f8a14ef7936e031f81081cbc46675a49e0685c5e5d15a98d297ef4bd3618e439af15212adb7086b8bc1cdc48002336705735c13533185973406b4567ed6b

            • \Users\Admin\AppData\Local\Temp\041452.tmp

              Filesize

              531.7MB

              MD5

              4e7c0febeab7b8257bb5a9a5b41964be

              SHA1

              e113c92df1a8666abd66330a9eb95c8544137db7

              SHA256

              c070bf966a8d0e9a473685e67bf3091ddda302eb9a54425727a325554aa35ed4

              SHA512

              8761395868d23e267bc9f9237698461bede93f8f89c12589662bd996fd1dacab96636998c7e72729f882faac6df12e1640f2e8375c7a66b45668f93f0708c882

            • \Users\Admin\AppData\Local\Temp\041452.tmp

              Filesize

              531.7MB

              MD5

              4e7c0febeab7b8257bb5a9a5b41964be

              SHA1

              e113c92df1a8666abd66330a9eb95c8544137db7

              SHA256

              c070bf966a8d0e9a473685e67bf3091ddda302eb9a54425727a325554aa35ed4

              SHA512

              8761395868d23e267bc9f9237698461bede93f8f89c12589662bd996fd1dacab96636998c7e72729f882faac6df12e1640f2e8375c7a66b45668f93f0708c882

            • memory/1268-1264-0x00000000002A0000-0x00000000002A1000-memory.dmp

              Filesize

              4KB

            • memory/1744-89-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-79-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/1744-91-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-90-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-93-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-94-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-95-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-97-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-96-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-92-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-88-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-83-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-87-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-98-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-121-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-163-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-205-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-86-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-1077-0x0000000006040000-0x0000000006041000-memory.dmp

              Filesize

              4KB

            • memory/1744-85-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-84-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-82-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-80-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-81-0x0000000000600000-0x0000000000700000-memory.dmp

              Filesize

              1024KB

            • memory/1744-1271-0x0000000006040000-0x0000000006041000-memory.dmp

              Filesize

              4KB

            • memory/1936-1266-0x00000000001B0000-0x00000000001B1000-memory.dmp

              Filesize

              4KB