Analysis

  • max time kernel
    49s
  • max time network
    117s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 19:36

General

  • Target
    20240106c59699d888ae2a654a972c74d44151c6lock.exe
  • Size 255KB
  • Sample240107-ybehdscfgm
  • SHA256 8354fa469e0c4dd3dc859d96fd1e6d6d3446bafd494bd6c0f001f16de010829f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20240106c59699d888ae2a654a972c74d44151c6lock.exe
    "C:\Users\Admin\AppData\Local\Temp\20240106c59699d888ae2a654a972c74d44151c6lock.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3764
    • C:\Users\Admin\ciYsEoEg\oqksUEcE.exe
      "C:\Users\Admin\ciYsEoEg\oqksUEcE.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:4580
    • C:\Windows\SysWOW64\reg.exe
      reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f
      2⤵
      • UAC bypass
      • Modifies registry key
      PID:648
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2
      2⤵
      • Modifies registry key
      PID:980
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 1
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies registry key
      PID:4780
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\cuninst.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4920
    • C:\ProgramData\cmcYwEAQ\osMMYcUk.exe
      "C:\ProgramData\cmcYwEAQ\osMMYcUk.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:952
  • C:\Users\Admin\AppData\Local\Temp\cuninst.exe
    C:\Users\Admin\AppData\Local\Temp\cuninst.exe
    1⤵
    • Executes dropped EXE
    PID:2944

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        background.png.exe

        • Path C:\ProgramData\Microsoft\Device Stage\Device\{8702d817-5aad-4674-9ef3-4d3decd87120}\background.png.exe
        • Size 4KB
        • SHA256 9973ffb5c297c99869623b8bb5233b7add9a8d27303e3b54433f26f79633f254
        • MD5 SHA1 SHA512

        user-48.png.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\user-48.png.exe
        • Size 36KB
        • SHA256 033ea1f0bfb8b771d9ba92a7fe5ec919d96acab211a4168094d1666d45a04a64
        • MD5 SHA1 SHA512 SSDEEP

        user.png.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\user.png.exe
        • Size 7KB
        • SHA256 1faf059824f639e25466b54d9bb309801085ba884e70958eb0db0bcb084447ec
        • MD5 SHA1 SHA512 SSDEEP

        osMMYcUk.exe

        • Path C:\ProgramData\cmcYwEAQ\osMMYcUk.exe
        • Size 27KB
        • SHA256 358c61c97f802589dcecb8f7db9b26e97d5dbed74ee3f47aa6cdb2fbe8891270
        • MD5 SHA1 SHA512 SSDEEP

        osMMYcUk.exe

        • Path C:\ProgramData\cmcYwEAQ\osMMYcUk.exe
        • Size 11KB
        • SHA256 f2a5c2b24649cb0cc9f46819781c04112ef1db3df4dd1b795198553a191590c3
        • MD5 SHA1 SHA512 SSDEEP

        HAgC.exe

        • Path C:\Users\Admin\AppData\Local\Temp\HAgC.exe
        • Size 23KB
        • SHA256 b2db2bf7319be22b86c0ca9df102f3d6d443aece826457f0815cbcfc4ff5e538
        • MD5 SHA1 SHA512 SSDEEP

        KAkk.exe

        • Path C:\Users\Admin\AppData\Local\Temp\KAkk.exe
        • Size 10KB
        • SHA256 703cdbd142dac82495e363bd6da299f6a5c78bd205521cf8b62ea05fffdef7d0
        • MD5 SHA1 SHA512 SSDEEP

        TYMy.exe

        • Path C:\Users\Admin\AppData\Local\Temp\TYMy.exe
        • Size 24KB
        • SHA256 63decda367c6d52734c2d2c95ee96c685ceb26952d94fcc039249942aafaf169
        • MD5 SHA1 SHA512 SSDEEP

        ZAks.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ZAks.exe
        • Size 10KB
        • SHA256 a4618aa6a34cac856f59c9d91042636dfc5bcc6d6da6b653fbe4b646fb788507
        • MD5 SHA1 SHA512 SSDEEP

        bkYK.exe

        • Path C:\Users\Admin\AppData\Local\Temp\bkYK.exe
        • Size 4KB
        • SHA256 2926860b0b41d67440769b7c1b0681171ec56323a944520bb61f9329e7792221
        • MD5 SHA1 SHA512

        cuninst.exe

        • Path C:\Users\Admin\AppData\Local\Temp\cuninst.exe
        • Size 3KB
        • SHA256 d1b70d82753b959bf5d16a1565b5f2b04fde60fd8c8466a01674b66ad78f0c18
        • MD5 SHA1 SHA512

        cuninst.exe

        • Path C:\Users\Admin\AppData\Local\Temp\cuninst.exe
        • Size 38KB
        • SHA256 fb73e9d7795c6e4bada17baa0b74afb759049806ddc264db8a2a902ad4d5c8c9
        • MD5 SHA1 SHA512 SSDEEP

        ekEa.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ekEa.exe
        • Size 8KB
        • SHA256 225692466e0a1c6a510e4da9465844dc09fad7bcd29e2716dc955bf92b3dd21f
        • MD5 SHA1 SHA512 SSDEEP

        ikci.ico

        • Path C:\Users\Admin\AppData\Local\Temp\ikci.ico
        • Size 4KB
        • SHA256 701a17a9ee5c9340bae4f0810f103d1f0ca5c03141e0da826139d5b7397a6fb3
        • MD5 SHA1 SHA512 SSDEEP

        ossG.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ossG.exe
        • Size 8KB
        • SHA256 90dcfff6da40e585ac9f7dac3f8ecc0ed3a9baf8431753226cf7b7eb4c07f506
        • MD5 SHA1 SHA512 SSDEEP

        psoq.exe

        • Path C:\Users\Admin\AppData\Local\Temp\psoq.exe
        • Size 30KB
        • SHA256 a5d8d5b32d17c8a2d0ccaa21604d725bc43891fe4b50a9b163570ce3fb1a364c
        • MD5 SHA1 SHA512 SSDEEP

        sMwa.exe

        • Path C:\Users\Admin\AppData\Local\Temp\sMwa.exe
        • Size 19KB
        • SHA256 dc54eb3be63de4312bc5f629452ced698cca42b5af2453989ff5485fe130b529
        • MD5 SHA1 SHA512 SSDEEP

        ucoI.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ucoI.exe
        • Size 4KB
        • SHA256 cf604a547846ba3ddd1e3a9fc397f95a4dd09d0004f8f1fd993f767f45572125
        • MD5 SHA1 SHA512

        vMEM.exe

        • Path C:\Users\Admin\AppData\Local\Temp\vMEM.exe
        • Size 8KB
        • SHA256 81293e063a399642f637ae273d7f956de811a50129833d557d6a78b9c03040d8
        • MD5 SHA1 SHA512 SSDEEP

        vwEm.exe

        • Path C:\Users\Admin\AppData\Local\Temp\vwEm.exe
        • Size 4KB
        • SHA256 e7cef3c255a77e35d9abf5775535e1c50d329f2ac6121c3130dfc609ed2835a8
        • MD5 SHA1 SHA512

        xcgg.exe

        • Path C:\Users\Admin\AppData\Local\Temp\xcgg.exe
        • Size 34KB
        • SHA256 22dc3f1176286aea3031e884c1801697508759a2355cb95c68d172a898561380
        • MD5 SHA1 SHA512 SSDEEP

        xkQy.exe

        • Path C:\Users\Admin\AppData\Local\Temp\xkQy.exe
        • Size 9KB
        • SHA256 1c316df6458e3c565e009fc05fa2c6f6fa730bb7f247b123f6e5ae53a7dee456
        • MD5 SHA1 SHA512 SSDEEP

        oqksUEcE.exe

        • Path C:\Users\Admin\ciYsEoEg\oqksUEcE.exe
        • Size 83KB
        • SHA256 bce69c4d2356f5cd46b618aca455e2ab2e372dfc80f6ea249763f34be81377d2
        • MD5 SHA1 SHA512 SSDEEP

        oqksUEcE.exe

        • Path C:\Users\Admin\ciYsEoEg\oqksUEcE.exe
        • Size 21KB
        • SHA256 fecdf274323f4d2ce3f338f75837acdb293b773188aa982a127e1f063237581a
        • MD5 SHA1 SHA512 SSDEEP

        memory/952-15-0x0000000000400000-0x000000000041D000-memory.dmp

        memory/2944-21-0x0000000000AB0000-0x0000000000AD8000-memory.dmp

        memory/2944-23-0x00007FF987D20000-0x00007FF9887E1000-memory.dmp

        memory/2944-52-0x00007FF987D20000-0x00007FF9887E1000-memory.dmp

        memory/3764-0-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/3764-17-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/4580-6-0x0000000000400000-0x000000000041D000-memory.dmp