Analysis

  • max time kernel
    174s
  • max time network
    190s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2023 22:19

General

  • Target

    3b3507314cbaea6b26d764d2843148a6.exe

  • Size

    748KB

  • MD5

    3b3507314cbaea6b26d764d2843148a6

  • SHA1

    13d8a76f25acfd731d942a0431a151893edf8d71

  • SHA256

    21058fc9748de5258181fc2aa099d1b82caf70218b39ceb5a4e36cbdc01c141a

  • SHA512

    ca57736ec1f242b9e715f87ab6596b207d1021fb87014ef7f52768983a3906f1168ca5721098cd9ab12b6c2b36c72f54a0d9154856ea64122c8c3add85a2ab23

  • SSDEEP

    12288:BenxWYKa5A932NNOoOLxOelra79eWJzPfww4dEBPeKqqPpHIY:BenMnpqhEOelK9ntwlENnW

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Loads dropped DLL 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3b3507314cbaea6b26d764d2843148a6.exe
    "C:\Users\Admin\AppData\Local\Temp\3b3507314cbaea6b26d764d2843148a6.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:620
    • C:\Users\Admin\AppData\Local\Temp\3b3507314cbaea6b26d764d2843148a6.exe
      "C:\Users\Admin\AppData\Local\Temp\3b3507314cbaea6b26d764d2843148a6.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Loads dropped DLL
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1420

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\MSWINSCK.OCX

    Filesize

    121KB

    MD5

    e8a2190a9e8ee5e5d2e0b599bbf9dda6

    SHA1

    4e97bf9519c83835da9db309e61ec87ddf165167

    SHA256

    80ab0b86de58a657956b2a293bd9957f78e37e7383c86d6cd142208c153b6311

    SHA512

    57f8473eedaf7e8aad3b5bcbb16d373fd6aaec290c3230033fc50b5ec220e93520b8915c936e758bb19107429a49965516425350e012f8db0de6d4f6226b42ee

  • memory/620-0-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/620-31-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/1420-9-0x00000000020F0000-0x0000000002184000-memory.dmp

    Filesize

    592KB

  • memory/1420-10-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/1420-12-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/1420-11-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/1420-13-0x00000000020F0000-0x0000000002184000-memory.dmp

    Filesize

    592KB

  • memory/1420-17-0x00000000020F0000-0x0000000002184000-memory.dmp

    Filesize

    592KB

  • memory/1420-4-0x00000000020F0000-0x0000000002184000-memory.dmp

    Filesize

    592KB

  • memory/1420-18-0x00000000020F0000-0x0000000002184000-memory.dmp

    Filesize

    592KB

  • memory/1420-30-0x00000000020F0000-0x0000000002184000-memory.dmp

    Filesize

    592KB

  • memory/1420-3-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB