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Analysis

  • max time kernel
    77s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    10/10/2022, 19:04

General

  • Target

    df035773aa9d757b3d5bfc1077be6781847b232a711a177fdf049034ee5937c6.dll

  • Size

    1.1MB

  • MD5

    5ec46ff1078627357046a7fc16353f6b

  • SHA1

    9dade4e808dbfdb0038aceaf296f2e7687cf2f3c

  • SHA256

    df035773aa9d757b3d5bfc1077be6781847b232a711a177fdf049034ee5937c6

  • SHA512

    7246a49f9dcb94a8ee98dcebc87dce8f28882baf4da0b1c9a4f13c965d923bbe75b0c708d4005da0d7a9220062ace58aac03044dad6cbbc752235193ba11b70e

  • SSDEEP

    6144:Rv0nl5VdIouKbRko8mQa9zoh/4pIeJ/iFU1wLhPFe00v+yRd:Rv07TI76RFgAwpA00V

Score
4/10

Malware Config

Signatures

  • Drops file in Windows directory 1 IoCs
  • Program crash 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\df035773aa9d757b3d5bfc1077be6781847b232a711a177fdf049034ee5937c6.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:932
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\df035773aa9d757b3d5bfc1077be6781847b232a711a177fdf049034ee5937c6.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1164
      • C:\Windows\SysWOW64\explorer.exe
        explorer.exe "C:\Users\Admin\AppData\Local\Temp\Thumoi.doc"
        3⤵
          PID:276
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 244
          3⤵
          • Program crash
          PID:1012
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:624
      • 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\Thumoi.doc"
        2⤵
        • Drops file in Windows directory
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1152
        • C:\Windows\splwow64.exe
          C:\Windows\splwow64.exe 12288
          3⤵
            PID:1756

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\Thumoi.doc

        Filesize

        17KB

        MD5

        316100dc2c8020a4d6a26d8389c52954

        SHA1

        0b2fa401f0986faba100be729b0eb194cba2e81f

        SHA256

        1514072fc616162a2537a224dc2803ff41cad4a24774788f0746992d043e0086

        SHA512

        d9860d175b448bc558d8e7e6508b354b8f3a862cc190fb1bfd116660393b7f2033131353736a434ee387168a47b64bbd5a7117259cb4bbd8fc79a0a6f970d6e9

      • memory/276-58-0x0000000074211000-0x0000000074213000-memory.dmp

        Filesize

        8KB

      • memory/624-59-0x000007FEFB5B1000-0x000007FEFB5B3000-memory.dmp

        Filesize

        8KB

      • memory/1152-61-0x00000000720A1000-0x00000000720A4000-memory.dmp

        Filesize

        12KB

      • memory/1152-62-0x000000006FB21000-0x000000006FB23000-memory.dmp

        Filesize

        8KB

      • memory/1152-63-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1152-64-0x0000000070B0D000-0x0000000070B18000-memory.dmp

        Filesize

        44KB

      • memory/1152-70-0x0000000070B0D000-0x0000000070B18000-memory.dmp

        Filesize

        44KB

      • memory/1164-55-0x0000000075C61000-0x0000000075C63000-memory.dmp

        Filesize

        8KB