Analysis

  • max time kernel
    151s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02/12/2022, 20:46

General

  • Target

    b096475574f47a431d496f4f4c154f2484baed1e2bcbc4c0a07e3a75c7022adb.exe

  • Size

    156KB

  • MD5

    b59968561ec05662401990d60caf94d9

  • SHA1

    ebe6873ff34676e296ab263dabae3f3fd6a12847

  • SHA256

    b096475574f47a431d496f4f4c154f2484baed1e2bcbc4c0a07e3a75c7022adb

  • SHA512

    8a50c2e8e2af41a9d8633868e06a2b9576cb38afc8101bedfd105ceab807b08efeee34103dfeff44c53e81f3210642da6a807d4855716948f99189904f637d6f

  • SSDEEP

    1536:trkumduYPBU8gRDGHPOGMmUbaxGAka+t/K9rCGaV9mw7Jqx8M+dzAbOQgRVd:kduY5a4UbaxqkCGaVD7JqfKAbfod

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 53 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b096475574f47a431d496f4f4c154f2484baed1e2bcbc4c0a07e3a75c7022adb.exe
    "C:\Users\Admin\AppData\Local\Temp\b096475574f47a431d496f4f4c154f2484baed1e2bcbc4c0a07e3a75c7022adb.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1612
    • C:\Users\Admin\rwyun.exe
      "C:\Users\Admin\rwyun.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1948

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\rwyun.exe

    Filesize

    156KB

    MD5

    89ee531b802e017f5784d9f1699b6436

    SHA1

    68546702264df0a5c9e232b4b6b3c33f8a4e5541

    SHA256

    5c9ee6a7ba8b4af58c80d08e2df607f90763655208b3f8081773b801a551adc9

    SHA512

    816c30cce3d2d3d03390fc51541b697f6dfeef3d04e8d69a32568317a3dc1fd9309b36b48d3c300ed46dc6c121e6937749b828d2cc42d3625342e5d02a9d48fd

  • C:\Users\Admin\rwyun.exe

    Filesize

    156KB

    MD5

    89ee531b802e017f5784d9f1699b6436

    SHA1

    68546702264df0a5c9e232b4b6b3c33f8a4e5541

    SHA256

    5c9ee6a7ba8b4af58c80d08e2df607f90763655208b3f8081773b801a551adc9

    SHA512

    816c30cce3d2d3d03390fc51541b697f6dfeef3d04e8d69a32568317a3dc1fd9309b36b48d3c300ed46dc6c121e6937749b828d2cc42d3625342e5d02a9d48fd

  • \Users\Admin\rwyun.exe

    Filesize

    156KB

    MD5

    89ee531b802e017f5784d9f1699b6436

    SHA1

    68546702264df0a5c9e232b4b6b3c33f8a4e5541

    SHA256

    5c9ee6a7ba8b4af58c80d08e2df607f90763655208b3f8081773b801a551adc9

    SHA512

    816c30cce3d2d3d03390fc51541b697f6dfeef3d04e8d69a32568317a3dc1fd9309b36b48d3c300ed46dc6c121e6937749b828d2cc42d3625342e5d02a9d48fd

  • \Users\Admin\rwyun.exe

    Filesize

    156KB

    MD5

    89ee531b802e017f5784d9f1699b6436

    SHA1

    68546702264df0a5c9e232b4b6b3c33f8a4e5541

    SHA256

    5c9ee6a7ba8b4af58c80d08e2df607f90763655208b3f8081773b801a551adc9

    SHA512

    816c30cce3d2d3d03390fc51541b697f6dfeef3d04e8d69a32568317a3dc1fd9309b36b48d3c300ed46dc6c121e6937749b828d2cc42d3625342e5d02a9d48fd

  • memory/1612-56-0x0000000076681000-0x0000000076683000-memory.dmp

    Filesize

    8KB