Overview

overview

10

Static

static

5

7c934c2bf9...be.exe

windows7-x64

10

7c934c2bf9...be.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    1s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    26/12/2023, 16:26

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General

  • Target

    7c934c2bf95ac6f0c0588bfd2fe587be.exe

  • Size

    512KB

  • MD5

    7c934c2bf95ac6f0c0588bfd2fe587be

  • SHA1

    4abef60a192a233469a353544f77f13fe83d4a8b

  • SHA256

    da3db60964012295ef95eb9899b0cfa699dfcea4905dc12a1a3a0eaf635ba5a5

  • SHA512

    b8fed8974f7d29cb0190dedc77bf91a463b11132962c5f718d426188b52e48950515ca50233dc31b2a14d498c74a153066b2973748e40992008986e8b7deead3

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6Z:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5w

Score
10/10
evasionpersistencetrojan

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • Windows security bypass 2 TTPs 5 IoCs
    evasiontrojan
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 5 IoCs
  • Windows security modification 2 TTPs 6 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
    persistence
  • AutoIT Executable 7 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7c934c2bf95ac6f0c0588bfd2fe587be.exe
    "C:\Users\Admin\AppData\Local\Temp\7c934c2bf95ac6f0c0588bfd2fe587be.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2076
    • C:\Windows\SysWOW64\cyfquvcegkmsr.exe
      cyfquvcegkmsr.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3016
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:2508
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1556
      • C:\Windows\SysWOW64\rofctmtn.exe
        rofctmtn.exe
        2⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2744
      • C:\Windows\SysWOW64\plsbmxyzrytuipc.exe
        plsbmxyzrytuipc.exe
        2⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2364
      • C:\Windows\SysWOW64\kpelwmkrls.exe
        kpelwmkrls.exe
        2⤵
        • Modifies visibility of file extensions in Explorer
        • Modifies visiblity of hidden/system files in Explorer
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Loads dropped DLL
        • Windows security modification
        • Enumerates connected drives
        • Modifies WinLogon
        • Drops file in System32 directory
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:1540
    • C:\Windows\SysWOW64\rofctmtn.exe
      C:\Windows\system32\rofctmtn.exe
      1⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1388

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\SysWOW64\kpelwmkrls.exe
      Filesize

      93KB

      MD5

      257f28bd5bdc2b725434b7ab570814e7

      SHA1

      972446e0f8d210c5d6f42a57a921391a236d564d

      SHA256

      d80f45a5995ba038d69dbe87f7c12827ffa2b53e79beedb0bc6ee91c10a61688

      SHA512

      c27aa91c3c3605941a1a121021c840fc7886cf27d43e9d6b2c371888a276d9dfd39135600a4f933f62dfa3d46cb6e12de6e31b3f8b939676701ff37f8cc61575

      Download Submit

    • C:\Windows\SysWOW64\plsbmxyzrytuipc.exe
      Filesize

      98KB

      MD5

      609af11fd29d08e54980de8c57a56b23

      SHA1

      e50dccaa3bd6cb5b4793d75239949664c7b7b85c

      SHA256

      263becbbaf456f58f41f0ac5b3d64a9146f02fe787e80917150392fa4b571274

      SHA512

      598fc2efae60327ed354d106300f79ddd327756e93b5afaa7178dde66f28b9326c31b553190840a55c1d1d3b027015fbfe7b8a004564aed9dc1b3ecb184f8586

      Download Submit

    • C:\Windows\SysWOW64\plsbmxyzrytuipc.exe
      Filesize

      512KB

      MD5

      2c8dd41bb955b9b6a0dbef23afba6b17

      SHA1

      1524bc56d196e873423e56917fe0b06cae2cc7c1

      SHA256

      75b531430f1dc9cac9aaca63ae30c2f386ac562bed70db6c12f02e5db277bc6b

      SHA512

      f5b5b220991476dd09b04d36e3c00e6924f3834eb456fa4402800bd91c702361bb283de168582b1849723e1d7e870fcd9d8a2ae6c0c7f9eb802906c346fd8e3e

      Download Submit

    • \Windows\SysWOW64\kpelwmkrls.exe
      Filesize

      512KB

      MD5

      8468075c21caa36203c1ad8f28c379a0

      SHA1

      c26439fa2f17e0aa51c8abeb2871119b5efd7abe

      SHA256

      dd3082c904c32c8fea79a75cbdebd8cf09961808533fdcfeff3fcf9e2495278c

      SHA512

      5814a102d0770a63839aa42f6257e79515e68b9767e729724404331f5ecddd8710c0cf90285e4cc7ed96556a64df2a498bdbe24cbb2157d6dd4fbc276ecd92b7

      Download Submit

    • \Windows\SysWOW64\plsbmxyzrytuipc.exe
      Filesize

      92KB

      MD5

      6662b185f19fbf697c56a25c92de7961

      SHA1

      0df0c0df0de3724258df2549c583e3c934aca726

      SHA256

      c11edb9e97848e20319fba876d9382c7193f68323eff1f7ed805bb04303bdc86

      SHA512

      c6e2cb83f68a63ca299dae843d2697d41dab8b565fb4005755b0d255b388779b6c1dad97375009c995f0a3d2e0acb4cc820090ca5dc24ee11e1a3de5b1a4921f

      Download Submit

    • memory/2076-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

      Download

    • memory/2508-45-0x000000002F291000-0x000000002F292000-memory.dmp

      Filesize

      4KB

      Download

    • memory/2508-47-0x00000000714ED000-0x00000000714F8000-memory.dmp

      Filesize

      44KB

      Download

    • memory/2508-46-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2508-84-0x00000000714ED000-0x00000000714F8000-memory.dmp

      Filesize

      44KB

      Download

    • memory/2508-105-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

      Download