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Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 10:05

General

  • Target

    15f4b6ff3ff656fbe205618a25c5fc3c.dll

  • Size

    236KB

  • MD5

    15f4b6ff3ff656fbe205618a25c5fc3c

  • SHA1

    d0c443afb91af5cd8bbd4bcebc1c9652f6622be9

  • SHA256

    51a129086b973f6bae1bed13d9baf7796be82f59e407fb5a59d3936a31830690

  • SHA512

    dcb9b6fbf5e2202592c30c4286eee51a5f03f85be886860398411c63b7cecd153144236d568411b4898786d0ce86106569bedfaa47959c1bd19867dfbde55392

  • SSDEEP

    3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIT:+Qj9U3jwO3rt5I

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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\15f4b6ff3ff656fbe205618a25c5fc3c.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3024
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\15f4b6ff3ff656fbe205618a25c5fc3c.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:2548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Windows\SysWOW64\rxf.dll

    Filesize

    625KB

    MD5

    95e2376b3323f062eb562b8586d0f14a

    SHA1

    453d4c3bf4a489433b593420a37bbffb7749875a

    SHA256

    bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

    SHA512

    b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

  • memory/2548-8-0x0000000076F80000-0x0000000077020000-memory.dmp

    Filesize

    640KB

  • memory/2548-7-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2548-10-0x0000000076F80000-0x0000000077020000-memory.dmp

    Filesize

    640KB

  • memory/2548-9-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB