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Analysis

  • max time kernel
    151s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29/10/2022, 11:01

General

  • Target

    a08d985e5953ef9e9fd082b690b03b9baac8d9355004bfb021c7cbf01760b806.exe

  • Size

    255KB

  • MD5

    e88d07d695a80c20a9e381b2612eb298

  • SHA1

    f7d5c373bd44c95caab84f7ffa49dfec868f6ec3

  • SHA256

    a08d985e5953ef9e9fd082b690b03b9baac8d9355004bfb021c7cbf01760b806

  • SHA512

    00b76153cc182b5cf410aa1ec9452f4d871425e5440d21d48e15c8f4307f3e49d515703a36b370af29e66cdaca68de795a588912e16ba6d5ea14623c0d207b14

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJg:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIb

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
  • Executes dropped EXE 5 IoCs
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • UPX packed file 28 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 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 4 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 12 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 33 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of FindShellTrayWindow 58 IoCs
  • Suspicious use of SendNotifyMessage 41 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a08d985e5953ef9e9fd082b690b03b9baac8d9355004bfb021c7cbf01760b806.exe
    "C:\Users\Admin\AppData\Local\Temp\a08d985e5953ef9e9fd082b690b03b9baac8d9355004bfb021c7cbf01760b806.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:832
    • C:\Windows\SysWOW64\ntxntvsnbu.exe
      ntxntvsnbu.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:1788
      • C:\Windows\SysWOW64\otqgyknv.exe
        C:\Windows\system32\otqgyknv.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        PID:1980
    • C:\Windows\SysWOW64\rxynsqwcdguihmr.exe
      rxynsqwcdguihmr.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1336
    • C:\Windows\SysWOW64\otqgyknv.exe
      otqgyknv.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2036
    • C:\Windows\SysWOW64\cvapnccymjfjr.exe
      cvapnccymjfjr.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1096
    • 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 FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:364
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:952
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:816
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x578
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1552

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe

      Filesize

      255KB

      MD5

      1a95ae7ba8e90f9ec320a19ba64fdd98

      SHA1

      783fe9bc239cdc845a58d6bb9917fc571ac5ab2d

      SHA256

      43592c1e91aae077b2f588c04fabeccd5c4e9fb1c7bc5781a0071a4192c76138

      SHA512

      9ed51dd4b7770655ed5ce23b3932dbf24c6f60364b719d7448c39f7a024f521b2fa797df3839ae9f40539eff029100aa722c625eaa7dd16d767a7b79f75332ac

    • C:\Windows\SysWOW64\cvapnccymjfjr.exe

      Filesize

      255KB

      MD5

      c2e8ab3f45aa63ed4296478e1668bdf3

      SHA1

      ed823869c1d24e870500de6cc1ada36b13c56d88

      SHA256

      bfb282bf816b696a5ad8ed946549a4e506d786ff6d35a0bea97a8536e1028d5d

      SHA512

      889700d6017c901c5d95236aa0c21880b349dad0c83c0f9a776f991619b08e39a3d8847cce052742835c1ca8440168af7f85dccb453cf5dd23cb3de4f0990d46

    • C:\Windows\SysWOW64\cvapnccymjfjr.exe

      Filesize

      255KB

      MD5

      c2e8ab3f45aa63ed4296478e1668bdf3

      SHA1

      ed823869c1d24e870500de6cc1ada36b13c56d88

      SHA256

      bfb282bf816b696a5ad8ed946549a4e506d786ff6d35a0bea97a8536e1028d5d

      SHA512

      889700d6017c901c5d95236aa0c21880b349dad0c83c0f9a776f991619b08e39a3d8847cce052742835c1ca8440168af7f85dccb453cf5dd23cb3de4f0990d46

    • C:\Windows\SysWOW64\ntxntvsnbu.exe

      Filesize

      255KB

      MD5

      d8b6a207707feb041191248e0b3984a2

      SHA1

      13c28a617f9ae97e4eab726f6149c81a3cf9460e

      SHA256

      38061f9714a499c7eb23629b2eafd3dc3e286785e81bb4cf42327130d91f8f44

      SHA512

      ef9fccf98ca69368576248fcd5fc20f1f4c3756b07c755efc582c3f323433b32fb60b5898fbf9b171eb11da25ad1e19c65d8065acb786d7c62e1262a6817f932

    • C:\Windows\SysWOW64\ntxntvsnbu.exe

      Filesize

      255KB

      MD5

      d8b6a207707feb041191248e0b3984a2

      SHA1

      13c28a617f9ae97e4eab726f6149c81a3cf9460e

      SHA256

      38061f9714a499c7eb23629b2eafd3dc3e286785e81bb4cf42327130d91f8f44

      SHA512

      ef9fccf98ca69368576248fcd5fc20f1f4c3756b07c755efc582c3f323433b32fb60b5898fbf9b171eb11da25ad1e19c65d8065acb786d7c62e1262a6817f932

    • C:\Windows\SysWOW64\otqgyknv.exe

      Filesize

      255KB

      MD5

      8eaa66a13c940dc07fe00d403ebc858e

      SHA1

      bc9f488b7b31e04ce01a1a6b3e8c3d1558d719a9

      SHA256

      f408b3563425c660a3cd3f76ac4ca160741208b73ffc707d876f1bfa94ea09d5

      SHA512

      50f1ef629f646d6fb5c31f131d390172fccddff6fee7031b7c1c79a35f0a7e55f308e40f12b1278795aedae253a008b1c318ad9747f57d7724e77bbe6a8784d6

    • C:\Windows\SysWOW64\otqgyknv.exe

      Filesize

      255KB

      MD5

      8eaa66a13c940dc07fe00d403ebc858e

      SHA1

      bc9f488b7b31e04ce01a1a6b3e8c3d1558d719a9

      SHA256

      f408b3563425c660a3cd3f76ac4ca160741208b73ffc707d876f1bfa94ea09d5

      SHA512

      50f1ef629f646d6fb5c31f131d390172fccddff6fee7031b7c1c79a35f0a7e55f308e40f12b1278795aedae253a008b1c318ad9747f57d7724e77bbe6a8784d6

    • C:\Windows\SysWOW64\otqgyknv.exe

      Filesize

      255KB

      MD5

      8eaa66a13c940dc07fe00d403ebc858e

      SHA1

      bc9f488b7b31e04ce01a1a6b3e8c3d1558d719a9

      SHA256

      f408b3563425c660a3cd3f76ac4ca160741208b73ffc707d876f1bfa94ea09d5

      SHA512

      50f1ef629f646d6fb5c31f131d390172fccddff6fee7031b7c1c79a35f0a7e55f308e40f12b1278795aedae253a008b1c318ad9747f57d7724e77bbe6a8784d6

    • C:\Windows\SysWOW64\rxynsqwcdguihmr.exe

      Filesize

      255KB

      MD5

      707c857f716970925ff7f6ad27c1c5ce

      SHA1

      cf5184647fb9a7dc3501bb685a16a2663e201858

      SHA256

      583bd79f9062cd7c53b7fc12dd830632c05c6d6df7ce77687c05378ab1315144

      SHA512

      18872251726e6f56417d47ba9a0e829c0858e8cea0b8ecb0fde95fb42dbca0c56891299af22319e27f7a40937c019acd2021d526302bfc5da90db2b378c1355b

    • C:\Windows\SysWOW64\rxynsqwcdguihmr.exe

      Filesize

      255KB

      MD5

      707c857f716970925ff7f6ad27c1c5ce

      SHA1

      cf5184647fb9a7dc3501bb685a16a2663e201858

      SHA256

      583bd79f9062cd7c53b7fc12dd830632c05c6d6df7ce77687c05378ab1315144

      SHA512

      18872251726e6f56417d47ba9a0e829c0858e8cea0b8ecb0fde95fb42dbca0c56891299af22319e27f7a40937c019acd2021d526302bfc5da90db2b378c1355b

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \??\c:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe

      Filesize

      255KB

      MD5

      1a95ae7ba8e90f9ec320a19ba64fdd98

      SHA1

      783fe9bc239cdc845a58d6bb9917fc571ac5ab2d

      SHA256

      43592c1e91aae077b2f588c04fabeccd5c4e9fb1c7bc5781a0071a4192c76138

      SHA512

      9ed51dd4b7770655ed5ce23b3932dbf24c6f60364b719d7448c39f7a024f521b2fa797df3839ae9f40539eff029100aa722c625eaa7dd16d767a7b79f75332ac

    • \Windows\SysWOW64\cvapnccymjfjr.exe

      Filesize

      255KB

      MD5

      c2e8ab3f45aa63ed4296478e1668bdf3

      SHA1

      ed823869c1d24e870500de6cc1ada36b13c56d88

      SHA256

      bfb282bf816b696a5ad8ed946549a4e506d786ff6d35a0bea97a8536e1028d5d

      SHA512

      889700d6017c901c5d95236aa0c21880b349dad0c83c0f9a776f991619b08e39a3d8847cce052742835c1ca8440168af7f85dccb453cf5dd23cb3de4f0990d46

    • \Windows\SysWOW64\ntxntvsnbu.exe

      Filesize

      255KB

      MD5

      d8b6a207707feb041191248e0b3984a2

      SHA1

      13c28a617f9ae97e4eab726f6149c81a3cf9460e

      SHA256

      38061f9714a499c7eb23629b2eafd3dc3e286785e81bb4cf42327130d91f8f44

      SHA512

      ef9fccf98ca69368576248fcd5fc20f1f4c3756b07c755efc582c3f323433b32fb60b5898fbf9b171eb11da25ad1e19c65d8065acb786d7c62e1262a6817f932

    • \Windows\SysWOW64\otqgyknv.exe

      Filesize

      255KB

      MD5

      8eaa66a13c940dc07fe00d403ebc858e

      SHA1

      bc9f488b7b31e04ce01a1a6b3e8c3d1558d719a9

      SHA256

      f408b3563425c660a3cd3f76ac4ca160741208b73ffc707d876f1bfa94ea09d5

      SHA512

      50f1ef629f646d6fb5c31f131d390172fccddff6fee7031b7c1c79a35f0a7e55f308e40f12b1278795aedae253a008b1c318ad9747f57d7724e77bbe6a8784d6

    • \Windows\SysWOW64\otqgyknv.exe

      Filesize

      255KB

      MD5

      8eaa66a13c940dc07fe00d403ebc858e

      SHA1

      bc9f488b7b31e04ce01a1a6b3e8c3d1558d719a9

      SHA256

      f408b3563425c660a3cd3f76ac4ca160741208b73ffc707d876f1bfa94ea09d5

      SHA512

      50f1ef629f646d6fb5c31f131d390172fccddff6fee7031b7c1c79a35f0a7e55f308e40f12b1278795aedae253a008b1c318ad9747f57d7724e77bbe6a8784d6

    • \Windows\SysWOW64\rxynsqwcdguihmr.exe

      Filesize

      255KB

      MD5

      707c857f716970925ff7f6ad27c1c5ce

      SHA1

      cf5184647fb9a7dc3501bb685a16a2663e201858

      SHA256

      583bd79f9062cd7c53b7fc12dd830632c05c6d6df7ce77687c05378ab1315144

      SHA512

      18872251726e6f56417d47ba9a0e829c0858e8cea0b8ecb0fde95fb42dbca0c56891299af22319e27f7a40937c019acd2021d526302bfc5da90db2b378c1355b

    • memory/364-95-0x000000006B151000-0x000000006B153000-memory.dmp

      Filesize

      8KB

    • memory/364-96-0x000000006AFE1000-0x000000006AFE3000-memory.dmp

      Filesize

      8KB

    • memory/364-92-0x0000000070CAD000-0x0000000070CB8000-memory.dmp

      Filesize

      44KB

    • memory/364-90-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/364-89-0x000000006FCC1000-0x000000006FCC3000-memory.dmp

      Filesize

      8KB

    • memory/364-88-0x0000000072241000-0x0000000072244000-memory.dmp

      Filesize

      12KB

    • memory/364-102-0x0000000070CAD000-0x0000000070CB8000-memory.dmp

      Filesize

      44KB

    • memory/816-93-0x000007FEFB241000-0x000007FEFB243000-memory.dmp

      Filesize

      8KB

    • memory/816-107-0x0000000002650000-0x0000000002660000-memory.dmp

      Filesize

      64KB

    • memory/832-75-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/832-86-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/832-54-0x0000000075091000-0x0000000075093000-memory.dmp

      Filesize

      8KB

    • memory/832-76-0x0000000002E70000-0x0000000002F10000-memory.dmp

      Filesize

      640KB

    • memory/1096-80-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1096-100-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1336-78-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1336-98-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1788-77-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1788-97-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1980-101-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1980-87-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2036-99-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2036-79-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB