Windows 7 deprecation

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Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/06/2024, 22:29

General

  • Target

    b912a788fd451bf4ddd1834e37e08ef81d3549b948ed0888e16a1e3faee984f1.exe

  • Size

    79KB

  • MD5

    2874966864fc9bea32cc457135b8ab8a

  • SHA1

    7e188555a5b26d09813bde4c5b400fd364079099

  • SHA256

    b912a788fd451bf4ddd1834e37e08ef81d3549b948ed0888e16a1e3faee984f1

  • SHA512

    89163ff1c3a2b0e86f60a0445723b98d25828c550d33052d92a006da9710b066e9b0887594457b6b062bfa6247658b6981b3b830c736b4ce7916c61faa2686ab

  • SSDEEP

    1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWO3Bxr7n:GhfxHNIreQm+HikBxr7n

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 5 IoCs
  • Drops file in System32 directory 4 IoCs
  • Drops file in Windows directory 2 IoCs
  • Modifies registry class 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b912a788fd451bf4ddd1834e37e08ef81d3549b948ed0888e16a1e3faee984f1.exe
    "C:\Users\Admin\AppData\Local\Temp\b912a788fd451bf4ddd1834e37e08ef81d3549b948ed0888e16a1e3faee984f1.exe"
    1⤵
    • Modifies system executable filetype association
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4900
    • C:\Windows\system\rundll32.exe
      C:\Windows\system\rundll32.exe
      2⤵
      • Executes dropped EXE
      • Modifies system executable filetype association
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:3548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\notepad¢¬.exe

    Filesize

    85KB

    MD5

    ce9794faccfb585e5390678a3ef9f8d6

    SHA1

    e359100a9907b30b8e82ceedbae7070d50c767ed

    SHA256

    735377d6c85210fc15baeec7aba1bdef98237f6124735647f1733298a0b9fa7b

    SHA512

    5159bc7c04f84f7c629f276667bb18a6c46494f71544b77c33938acd3872fed14b146a9145f1cd514fb3b00c57bcc1f71229989f8a6cb487db40687f4f7dfb84

  • C:\Windows\system\rundll32.exe

    Filesize

    82KB

    MD5

    8f73159f68804bdf8462d12952491a4e

    SHA1

    38d4406ae49c7c1be4152926cf08659f4ecb274f

    SHA256

    1ae5e2ab061a2149e5f7331601025991a27d879f3046b8de73a12bdd9ee46345

    SHA512

    a911ee4754b3bfaa2a5cf22f59b85b81b5e1cd7b8ee946a67b5d4d9d6d375012e1f80987ddd20ff66390868b1c5a373a77ae8f10828bf947cb609386d780256a

  • memory/4900-0-0x0000000000400000-0x0000000000415A00-memory.dmp

    Filesize

    86KB

  • memory/4900-13-0x0000000000400000-0x0000000000415A00-memory.dmp

    Filesize

    86KB