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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/12/2023, 16:28

General

  • Target

    05b451c94a1d87800d3d100f59f26ca7.dll

  • Size

    236KB

  • MD5

    05b451c94a1d87800d3d100f59f26ca7

  • SHA1

    cb66ca4280c50bff4bbd0db1c7cf64f7cc0f61f7

  • SHA256

    e0ca68f3cc2b8977aa07387c8492a06581db85275c5b68205036780a2d5a8099

  • SHA512

    950ee1da6b5f75605f20ac4c287f8551148f6d72d8c3bdf32fc8d5ca3f4603e05a36cb08301a783bad7c48beee3b19d4e1b0192f072d931c2745ce3fa1a6b2d4

  • SSDEEP

    1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMh:Go256vS0RJAL+lHPKi40+66iwkD0q

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\05b451c94a1d87800d3d100f59f26ca7.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2540
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\05b451c94a1d87800d3d100f59f26ca7.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:3800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\iycht.dll

    Filesize

    478KB

    MD5

    e99416267b61f52fa5ab994019efd359

    SHA1

    86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

    SHA256

    768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

    SHA512

    0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

  • memory/3800-0-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/3800-9-0x0000000077570000-0x00000000775EA000-memory.dmp

    Filesize

    488KB

  • memory/3800-11-0x0000000077570000-0x00000000775EA000-memory.dmp

    Filesize

    488KB

  • memory/3800-10-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB