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Analysis

  • max time kernel
    92s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/12/2022, 21:12

General

  • Target

    90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1.dll

  • Size

    236KB

  • MD5

    361ef054147f6f1a507fc2be6e213029

  • SHA1

    f6b425c500557bfc0af337f61c572c8f2b790682

  • SHA256

    90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1

  • SHA512

    312e7c7b8ff6f0835398c23d141d2c6d100acb9d1cf361e517d2e4aec09ff5f762471d54d6e40f6355b09a726f4287bdc386236d92f78b54624611d4b581bd87

  • SSDEEP

    3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIM:+Qj9U3jwO3rt5/

Score
10/10

Malware Config

Signatures

  • Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 4 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1436
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1.dll,#1
      2⤵
      • Adds autorun key to be loaded by Explorer.exe on startup
      • Loads dropped DLL
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1856

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\ccausrnnn.dll

    Filesize

    478KB

    MD5

    e99416267b61f52fa5ab994019efd359

    SHA1

    86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

    SHA256

    768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

    SHA512

    0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

  • memory/1856-134-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/1856-135-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB