Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/06/2024, 04:08

General

  • Target
    907c7706855e1a1c8016df3a48687567_JaffaCakes118.exe
  • Size 512KB
  • Sample240603-eqel6acb35
  • SHA256 3bc7c7c6b0cb63439f38967db6208aa7f01d3ce2b7a33ee21e6908a4d71b4094
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • 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
  • AutoIT Executable 8 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 13 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 20 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\907c7706855e1a1c8016df3a48687567_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\907c7706855e1a1c8016df3a48687567_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • 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:2964
    • C:\Windows\SysWOW64\hdreybhkyq.exe
      hdreybhkyq.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
      • 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:2416
      • C:\Windows\SysWOW64\snkbzruf.exe
        C:\Windows\system32\snkbzruf.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3088
    • C:\Windows\SysWOW64\woaeucbyvqrgqon.exe
      woaeucbyvqrgqon.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4032
    • C:\Windows\SysWOW64\snkbzruf.exe
      snkbzruf.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4528
    • C:\Windows\SysWOW64\pyjpryotvlvwf.exe
      pyjpryotvlvwf.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2228
    • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
      "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\mydoc.rtf" /o ""
      2⤵
      • Drops file in Windows directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1760
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4032 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4356

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          PROTTPLV.DOC.exe

          • Path C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe
          • Size 512KB
          • SHA256 562d37100f7cfcb344b31c407bb7b22ec3e55edf1b7bd365a83de6ad2d9874e9
          • MD5 SHA1 SHA512 SSDEEP

          index.dat

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat
          • Size 239B
          • SHA256 9def83813762ad0c5f6fdd68707d43b7ccd26633b2123254272180d76bc3faaf
          • MD5 SHA1 SHA512

          fb3b0dbfee58fac8.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms
          • Size 3KB
          • SHA256 53000dba83fbf6aaca1b2fdec8ce92d718de743d3fe19dd104fc107eecc6f195
          • MD5 SHA1 SHA512

          fb3b0dbfee58fac8.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms
          • Size 3KB
          • SHA256 1a9e51a2a8ab05e6841aaf1e37c6bb04435526089d029d565645ed6ae6bce053
          • MD5 SHA1 SHA512

          hdreybhkyq.exe

          • Path C:\Windows\SysWOW64\hdreybhkyq.exe
          • Size 512KB
          • SHA256 6d2a6196b206712189513710471b5a8e573c8af7927d87eb14f87b8bd47074ef
          • MD5 SHA1 SHA512 SSDEEP

          pyjpryotvlvwf.exe

          • Path C:\Windows\SysWOW64\pyjpryotvlvwf.exe
          • Size 512KB
          • SHA256 f018b080e12a03bbd59a3b8fb10153876531c388e5f3ef3b353c8de31c66373d
          • MD5 SHA1 SHA512 SSDEEP

          snkbzruf.exe

          • Path C:\Windows\SysWOW64\snkbzruf.exe
          • Size 512KB
          • SHA256 a4f9dab796adb9bfa4f812fff5ca9af7e4b73f59fa47e253c46b6571bea36a47
          • MD5 SHA1 SHA512 SSDEEP

          woaeucbyvqrgqon.exe

          • Path C:\Windows\SysWOW64\woaeucbyvqrgqon.exe
          • Size 512KB
          • SHA256 4c06153a973710252fed898ba9178696edb4207a2d68302e6800a425a456be7d
          • MD5 SHA1 SHA512 SSDEEP

          mydoc.rtf

          • Path C:\Windows\mydoc.rtf
          • Size 223B
          • SHA256 85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2
          • MD5 SHA1 SHA512

          MsoIrmProtector.doc.exe

          • Path \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe
          • Size 512KB
          • SHA256 81af67442c7656db16542f339cae82391f540669c1d3d9305131528b67eeae93
          • MD5 SHA1 SHA512 SSDEEP

          MsoIrmProtector.doc.exe

          • Path \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe
          • Size 512KB
          • SHA256 efccfbc733fa17312b5d244118b6dc972f07d5ad261b640878ac80183482de32
          • MD5 SHA1 SHA512 SSDEEP

          memory/1760-37-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/1760-44-0x00007FFE89080000-0x00007FFE89090000-memory.dmp

          memory/1760-42-0x00007FFE89080000-0x00007FFE89090000-memory.dmp

          memory/1760-41-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/1760-40-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/1760-39-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/1760-38-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/1760-118-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/1760-119-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/1760-120-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/1760-121-0x00007FFE8B830000-0x00007FFE8B840000-memory.dmp

          memory/2964-0-0x0000000000400000-0x0000000000496000-memory.dmp