Analysis

  • max time kernel
    103s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-es
  • resource tags

    arch:x64arch:x86image:win7-20220901-eslocale:es-esos:windows7-x64systemwindows
  • submitted
    30-01-2023 22:32

General

  • Target

    baddoc.doc

  • Size

    62KB

  • MD5

    a3b613d128aace09241504e8acc678c2

  • SHA1

    edde71ccadfad1380b881da5ecafc77fba5885b8

  • SHA256

    8b92c23b29422131acc150fa1ebac67e1b0b0f8cfc1b727805b842a88de447de

  • SHA512

    cef74b5b9fb3c4dba72650401dfe31b059db239a3248e1c9b91ab7f95907080d1b6258b32e4817184540129339f60c95f4e9e991d115e8414aea3b108eaf8dec

  • SSDEEP

    768:+0MGUUTYQin+b4C7UqCVuO1BtWmxzdrZUIdjXgAmxZp2j5s2p:+0MGUUTYQic8qS1XndrZf8pMV

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://91.220.131.44/upd/install.exe

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Blocklisted process makes network request 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 31 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\baddoc.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c c:\Users\Admin\AppData\Local\Temp\adobeacd-update.bat
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:336
      • C:\Windows\SysWOW64\PING.EXE
        ping 1.1.2.2 -n 2
        3⤵
        • Runs ping.exe
        PID:1904
      • C:\Windows\SysWOW64\chcp.com
        chcp 1251
        3⤵
          PID:1160
        • C:\Windows\SysWOW64\cscript.exe
          cscript.exe "c:\Users\Admin\AppData\Local\Temp\adobeacd-update"".""v""bs"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1692
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -ExecutionPolicy bypass -noprofile -file C:\Users\Admin\AppData\Local\Temp\adobeacd-update.ps1
            4⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:820
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c c:\Users\Admin\AppData\Local\Temp\444.exe
              5⤵
                PID:1932
        • C:\Windows\splwow64.exe
          C:\Windows\splwow64.exe 12288
          2⤵
            PID:772

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Defense Evasion

        Modify Registry

        1
        T1112

        Discovery

        System Information Discovery

        1
        T1082

        Remote System Discovery

        1
        T1018

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\adobeacd-update.ps1
          Filesize

          1KB

          MD5

          f4e07dbef9faa1cb3b47cac04f06b094

          SHA1

          aa8acb13858c2d9979f76e88759b43e43919669a

          SHA256

          90af729d2d78dccb4ac1aeaa24ea50fa13cc54a883bad6de05bbf33d90577f0d

          SHA512

          dd02098ff345875b25c94a6bfa4481c36bfd41cf5d0868715719bd6952cebca990881aacccba9da0a581b36725201da88f28d356de40179953f06a78742f59ec

        • \??\c:\Users\Admin\AppData\Local\Temp\adobeacd-update.bat
          Filesize

          207B

          MD5

          bcee45f249102dd87bc0445925e1dc65

          SHA1

          5652e6a5aa3178329def77f50e54529997e0cfad

          SHA256

          84b6d24219105e86f42329300278bbefa03ff6b40116123f3d19ff3c20f6ec9a

          SHA512

          c6290cc42bc452ce9d4bd284909da7f735d571dedf98e55809c1d91b0272db2a09e76865f2f476a7a2a1833126920ed7f2f9fab5d400bf2d0fb0ff381b432480

        • \??\c:\Users\Admin\AppData\Local\Temp\adobeacd-update.vbs
          Filesize

          357B

          MD5

          4595af11d7e8f623a9c1c3169d9bf20c

          SHA1

          11874e9d2ecada1b01dd1d05a8aa835bd4a31714

          SHA256

          4ed9c705449ec3a1a2afd425b478ae80d339c03498eb56dc19d7516fd9cadded

          SHA512

          b4a6edff072d77f389da0e93ad834e54e7c4e078cc3c2344ea939730720d8305dc72324d4b791ea0bb833724df9f96d7facd26970c74be8d5b0ee3bafe735cf3

        • memory/336-59-0x0000000000000000-mapping.dmp
        • memory/772-72-0x0000000000000000-mapping.dmp
        • memory/772-73-0x000007FEFC3E1000-0x000007FEFC3E3000-memory.dmp
          Filesize

          8KB

        • memory/820-67-0x0000000000000000-mapping.dmp
        • memory/820-69-0x000000006AA50000-0x000000006AFFB000-memory.dmp
          Filesize

          5.7MB

        • memory/820-74-0x000000006AA50000-0x000000006AFFB000-memory.dmp
          Filesize

          5.7MB

        • memory/820-70-0x0000000004D30000-0x0000000005381000-memory.dmp
          Filesize

          6.3MB

        • memory/1160-63-0x0000000000000000-mapping.dmp
        • memory/1364-57-0x000000007184D000-0x0000000071858000-memory.dmp
          Filesize

          44KB

        • memory/1364-58-0x0000000076B51000-0x0000000076B53000-memory.dmp
          Filesize

          8KB

        • memory/1364-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
          Filesize

          64KB

        • memory/1364-55-0x0000000070861000-0x0000000070863000-memory.dmp
          Filesize

          8KB

        • memory/1364-54-0x0000000072DE1000-0x0000000072DE4000-memory.dmp
          Filesize

          12KB

        • memory/1364-62-0x000000007184D000-0x0000000071858000-memory.dmp
          Filesize

          44KB

        • memory/1692-64-0x0000000000000000-mapping.dmp
        • memory/1904-61-0x0000000000000000-mapping.dmp
        • memory/1932-75-0x0000000000000000-mapping.dmp