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Analysis

  • max time kernel
    134s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/05/2024, 08:32

General

  • Target

    ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd.dll

  • Size

    223KB

  • MD5

    4d59317b5920e7a93b27a4f25a08874a

  • SHA1

    c0bcce5fcde0a2725cab215bce675d5a5c589da0

  • SHA256

    ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd

  • SHA512

    54c24df50b682601895da373f80ffe3998a64720bd71e0f969705c5da1a2f32dda7b9a6b316ca880f23c6a59c0ca772989d8890c76b90257383b1d180b028b9b

  • SSDEEP

    3072:6huf5AUWGIcvWJV9agufAnAZdlGZxIOtY81fs2lQBV+UdE+rECWp7hKd22:ZBAUWG09agufYLIBV+UdvrEFp7hKd22

Score
8/10

Malware Config

Signatures

  • Modifies AppInit DLL entries 2 TTPs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 4 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      PID:4644
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4644 -s 700
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:4228
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4644 -ip 4644
    1⤵
    • Loads dropped DLL
    PID:3436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Common Files\System\symsrv.dll

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • memory/4644-7-0x0000000000F30000-0x0000000000F60000-memory.dmp

    Filesize

    192KB

  • memory/4644-6-0x0000000000F30000-0x0000000000F60000-memory.dmp

    Filesize

    192KB

  • memory/4644-11-0x0000000010000000-0x0000000010025000-memory.dmp

    Filesize

    148KB

  • memory/4644-13-0x0000000000F30000-0x0000000000F60000-memory.dmp

    Filesize

    192KB