Analysis

  • max time kernel
    104s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 11:09

General

  • Target

    Information_79216117869.doc

  • Size

    548KB

  • MD5

    46fb44acc4862a5f3c60b77153676efa

  • SHA1

    b4ad77cf731f93a5b3cc59f152be8f39e752b99f

  • SHA256

    5505b90064bed94dfd3199e71b06f74aeed136f8a1ced57f65e604ba427016ac

  • SHA512

    999724485843a39e0ea7e801fe5ff4ffd4700e139c7a4cde80e59dd2e3b76f84c7d3d4a9863d22f09d6f5f604342ab330b651b58249b0fa4d33f8ce77f43e461

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 2 IoCs

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

  • 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
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 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\Information_79216117869.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:952
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2000
      • C:\Windows\SysWOW64\notepad.exe
        "C:\Windows\System32\notepad.exe" C:\Users\Admin\AppData\Roaming\most_acutely_did.txt
        2⤵
        • Process spawned unexpected child process
        • Opens file in notepad (likely ransom note)
        PID:1908
      • C:\Windows\SysWOW64\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe"
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of AdjustPrivilegeToken
        PID:1228

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\most_acutely_did.txt
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Roaming\most_acutely_did.txt
      Filesize

      7KB

      MD5

      7e84c07b2752e2e608bc86fba95a8924

      SHA1

      cacd3ed0d284b43c6e720a1cfe93319b5c9423f1

      SHA256

      71ebb0f52de9730d1111a2f43bcd851f994db204f8de9e74a1ad28bee657ae6d

      SHA512

      2392348217579211ad4028fc6f0a609c8e29dfe4127f09aac8af33c0c49f086849de9729a3a2bc685e9a983a5a7008971981dc867464d6c68734a51ca31fd7b3

    • memory/952-62-0x0000000000344000-0x0000000000348000-memory.dmp
      Filesize

      16KB

    • memory/952-66-0x0000000000344000-0x0000000000348000-memory.dmp
      Filesize

      16KB

    • memory/952-58-0x00000000710DD000-0x00000000710E8000-memory.dmp
      Filesize

      44KB

    • memory/952-72-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/952-55-0x00000000700F1000-0x00000000700F3000-memory.dmp
      Filesize

      8KB

    • memory/952-61-0x0000000000344000-0x0000000000348000-memory.dmp
      Filesize

      16KB

    • memory/952-54-0x0000000072671000-0x0000000072674000-memory.dmp
      Filesize

      12KB

    • memory/952-63-0x0000000000344000-0x0000000000348000-memory.dmp
      Filesize

      16KB

    • memory/952-64-0x0000000000344000-0x0000000000348000-memory.dmp
      Filesize

      16KB

    • memory/952-65-0x0000000000344000-0x0000000000348000-memory.dmp
      Filesize

      16KB

    • memory/952-57-0x00000000750C1000-0x00000000750C3000-memory.dmp
      Filesize

      8KB

    • memory/952-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1228-70-0x0000000000000000-mapping.dmp
    • memory/1908-67-0x0000000000000000-mapping.dmp
    • memory/2000-60-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmp
      Filesize

      8KB

    • memory/2000-59-0x0000000000000000-mapping.dmp