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Analysis

  • max time kernel
    152s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23/11/2022, 21:05

General

  • Target

    31968b19e0a9eac84639489471ba5d98c3c7d145035ee9bccee49d94bf391461.exe

  • Size

    255KB

  • MD5

    73b57a0fdf7d693364f5fc306b50ed49

  • SHA1

    7157889ea3ff68fa4d84587cbb568b78081954c4

  • SHA256

    31968b19e0a9eac84639489471ba5d98c3c7d145035ee9bccee49d94bf391461

  • SHA512

    55393a46823acff8bf3924e8383048172cd17ca813b51f5da4a1e9b4d85833aac91841b8117b5f6ac86e9fa001c96421ed685aa0ddb347dec5fbc2bc86da1674

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJE:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIp

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 6 IoCs
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • UPX packed file 33 IoCs

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

  • Loads dropped DLL 6 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 14 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 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of FindShellTrayWindow 46 IoCs
  • Suspicious use of SendNotifyMessage 37 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\31968b19e0a9eac84639489471ba5d98c3c7d145035ee9bccee49d94bf391461.exe
    "C:\Users\Admin\AppData\Local\Temp\31968b19e0a9eac84639489471ba5d98c3c7d145035ee9bccee49d94bf391461.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:1632
    • C:\Windows\SysWOW64\lycpwpqaku.exe
      lycpwpqaku.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:960
      • C:\Windows\SysWOW64\dulmuvfd.exe
        C:\Windows\system32\dulmuvfd.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        PID:1640
    • C:\Windows\SysWOW64\ghtsszdvldarbhj.exe
      ghtsszdvldarbhj.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1328
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c yuyxrnmprvfkp.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:784
        • C:\Windows\SysWOW64\yuyxrnmprvfkp.exe
          yuyxrnmprvfkp.exe
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          PID:336
    • C:\Windows\SysWOW64\dulmuvfd.exe
      dulmuvfd.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:1324
    • C:\Windows\SysWOW64\yuyxrnmprvfkp.exe
      yuyxrnmprvfkp.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1140
    • 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
      • Suspicious use of WriteProcessMemory
      PID:340
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1220
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1260
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x590
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:488

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      Filesize

      255KB

      MD5

      8fe76e1683948e154f77903b349893ce

      SHA1

      1b09127fa8bf1d08628c8c9afe1cd4d786f756ff

      SHA256

      a1a99f2849b0d869f6914d88fcba1b6e55445499fc9d52f0279c30697f704d7f

      SHA512

      384a1f769b90d5e0046847945842ee35936fbbb59ddf0650e85719ff087d861990d0fc56a0820fb5c2fe45b419bb00eabf7efe2af8a253979a763282a4e7739f

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

      Filesize

      255KB

      MD5

      abf9d3661ea3bb9a5971e77a20e234ae

      SHA1

      197ebd08b5776fda7424c9901f1d1707665a5cc6

      SHA256

      317b3f7598a1be5f0820f07e475b08bf48b276fdda4e72967ac4e9e38aec821d

      SHA512

      70cbd36f3a10083730acb4110217616e52e4d1c66a5b545a4357be38b98c501de43dfe12eed6478cf63e7dbc63426c8165b0fad887e36f4ff380eb379246ee4e

    • C:\Windows\SysWOW64\dulmuvfd.exe

      Filesize

      255KB

      MD5

      158ca2642c9c67471cb6e291acaed978

      SHA1

      c7251906193caed3eab69a7dde711c377d43b02c

      SHA256

      dea6d13b819c2fc49dd401072384f7855eaa73cc1ae8d94ad5eca2e1cb0cd04e

      SHA512

      369f52061b537b6b2b68aed76da34fe2dc7037d545dd235d93e8526994090cac0ab2cb355e82a9a3065e3a106e37152a982026b0c64aa82742fbd9ff4060e56c

    • C:\Windows\SysWOW64\dulmuvfd.exe

      Filesize

      255KB

      MD5

      158ca2642c9c67471cb6e291acaed978

      SHA1

      c7251906193caed3eab69a7dde711c377d43b02c

      SHA256

      dea6d13b819c2fc49dd401072384f7855eaa73cc1ae8d94ad5eca2e1cb0cd04e

      SHA512

      369f52061b537b6b2b68aed76da34fe2dc7037d545dd235d93e8526994090cac0ab2cb355e82a9a3065e3a106e37152a982026b0c64aa82742fbd9ff4060e56c

    • C:\Windows\SysWOW64\dulmuvfd.exe

      Filesize

      255KB

      MD5

      158ca2642c9c67471cb6e291acaed978

      SHA1

      c7251906193caed3eab69a7dde711c377d43b02c

      SHA256

      dea6d13b819c2fc49dd401072384f7855eaa73cc1ae8d94ad5eca2e1cb0cd04e

      SHA512

      369f52061b537b6b2b68aed76da34fe2dc7037d545dd235d93e8526994090cac0ab2cb355e82a9a3065e3a106e37152a982026b0c64aa82742fbd9ff4060e56c

    • C:\Windows\SysWOW64\ghtsszdvldarbhj.exe

      Filesize

      255KB

      MD5

      f9e24336f7a9a556ca3932265fa9c9c1

      SHA1

      81ad771f457bc10edc9f1c854c52c3b6c00eafe3

      SHA256

      fdc65d64389d99976b55ec3ae5ccce6cbe58a59f144426f1d123e82b8a0ef1c7

      SHA512

      06aebd7a9fe76019af7135dcf90ce4962133eedaab26bfe74ce5a08317891150dfafe6ad392956b502f5c6afb37c64440617685fa06e16b08e56c1dd9e3ab21a

    • C:\Windows\SysWOW64\ghtsszdvldarbhj.exe

      Filesize

      255KB

      MD5

      f9e24336f7a9a556ca3932265fa9c9c1

      SHA1

      81ad771f457bc10edc9f1c854c52c3b6c00eafe3

      SHA256

      fdc65d64389d99976b55ec3ae5ccce6cbe58a59f144426f1d123e82b8a0ef1c7

      SHA512

      06aebd7a9fe76019af7135dcf90ce4962133eedaab26bfe74ce5a08317891150dfafe6ad392956b502f5c6afb37c64440617685fa06e16b08e56c1dd9e3ab21a

    • C:\Windows\SysWOW64\lycpwpqaku.exe

      Filesize

      255KB

      MD5

      da0025473e424b4ff52414a78476fdcc

      SHA1

      9865dd1f67848279278b4e8a9a508b2da9c6a024

      SHA256

      4d94d681e555332af7b0258f803d21ddc58f5c17038f46cec13b0c8561631e13

      SHA512

      1fd1d583b4f86217acabe7427ed47eebbb6f480e9f5d6e690281ed36fb60df9a2e480d161c21f1c11fce37c65084a829850d5e4ca51e495c60b59b321ec472f8

    • C:\Windows\SysWOW64\lycpwpqaku.exe

      Filesize

      255KB

      MD5

      da0025473e424b4ff52414a78476fdcc

      SHA1

      9865dd1f67848279278b4e8a9a508b2da9c6a024

      SHA256

      4d94d681e555332af7b0258f803d21ddc58f5c17038f46cec13b0c8561631e13

      SHA512

      1fd1d583b4f86217acabe7427ed47eebbb6f480e9f5d6e690281ed36fb60df9a2e480d161c21f1c11fce37c65084a829850d5e4ca51e495c60b59b321ec472f8

    • C:\Windows\SysWOW64\yuyxrnmprvfkp.exe

      Filesize

      255KB

      MD5

      bc36b9736bc348bae8f9d1b9e4bb6a20

      SHA1

      d39a943ae2c3845b4c4ade6ae6c7d8b7573b0767

      SHA256

      43ff340cb5739dd7d8a3869fe3d1a9986afa469197bdb3bc3bd1a716eca4f962

      SHA512

      3d1df1b7c26f8ab70de7b68a71fef89b28209556d8a955c9085526e88b8fa92461361ff7c0ab725df9f6e420a6df734d3ccb8ff2388dbedce968b35e2383c223

    • C:\Windows\SysWOW64\yuyxrnmprvfkp.exe

      Filesize

      255KB

      MD5

      bc36b9736bc348bae8f9d1b9e4bb6a20

      SHA1

      d39a943ae2c3845b4c4ade6ae6c7d8b7573b0767

      SHA256

      43ff340cb5739dd7d8a3869fe3d1a9986afa469197bdb3bc3bd1a716eca4f962

      SHA512

      3d1df1b7c26f8ab70de7b68a71fef89b28209556d8a955c9085526e88b8fa92461361ff7c0ab725df9f6e420a6df734d3ccb8ff2388dbedce968b35e2383c223

    • C:\Windows\SysWOW64\yuyxrnmprvfkp.exe

      Filesize

      255KB

      MD5

      bc36b9736bc348bae8f9d1b9e4bb6a20

      SHA1

      d39a943ae2c3845b4c4ade6ae6c7d8b7573b0767

      SHA256

      43ff340cb5739dd7d8a3869fe3d1a9986afa469197bdb3bc3bd1a716eca4f962

      SHA512

      3d1df1b7c26f8ab70de7b68a71fef89b28209556d8a955c9085526e88b8fa92461361ff7c0ab725df9f6e420a6df734d3ccb8ff2388dbedce968b35e2383c223

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\dulmuvfd.exe

      Filesize

      255KB

      MD5

      158ca2642c9c67471cb6e291acaed978

      SHA1

      c7251906193caed3eab69a7dde711c377d43b02c

      SHA256

      dea6d13b819c2fc49dd401072384f7855eaa73cc1ae8d94ad5eca2e1cb0cd04e

      SHA512

      369f52061b537b6b2b68aed76da34fe2dc7037d545dd235d93e8526994090cac0ab2cb355e82a9a3065e3a106e37152a982026b0c64aa82742fbd9ff4060e56c

    • \Windows\SysWOW64\dulmuvfd.exe

      Filesize

      255KB

      MD5

      158ca2642c9c67471cb6e291acaed978

      SHA1

      c7251906193caed3eab69a7dde711c377d43b02c

      SHA256

      dea6d13b819c2fc49dd401072384f7855eaa73cc1ae8d94ad5eca2e1cb0cd04e

      SHA512

      369f52061b537b6b2b68aed76da34fe2dc7037d545dd235d93e8526994090cac0ab2cb355e82a9a3065e3a106e37152a982026b0c64aa82742fbd9ff4060e56c

    • \Windows\SysWOW64\ghtsszdvldarbhj.exe

      Filesize

      255KB

      MD5

      f9e24336f7a9a556ca3932265fa9c9c1

      SHA1

      81ad771f457bc10edc9f1c854c52c3b6c00eafe3

      SHA256

      fdc65d64389d99976b55ec3ae5ccce6cbe58a59f144426f1d123e82b8a0ef1c7

      SHA512

      06aebd7a9fe76019af7135dcf90ce4962133eedaab26bfe74ce5a08317891150dfafe6ad392956b502f5c6afb37c64440617685fa06e16b08e56c1dd9e3ab21a

    • \Windows\SysWOW64\lycpwpqaku.exe

      Filesize

      255KB

      MD5

      da0025473e424b4ff52414a78476fdcc

      SHA1

      9865dd1f67848279278b4e8a9a508b2da9c6a024

      SHA256

      4d94d681e555332af7b0258f803d21ddc58f5c17038f46cec13b0c8561631e13

      SHA512

      1fd1d583b4f86217acabe7427ed47eebbb6f480e9f5d6e690281ed36fb60df9a2e480d161c21f1c11fce37c65084a829850d5e4ca51e495c60b59b321ec472f8

    • \Windows\SysWOW64\yuyxrnmprvfkp.exe

      Filesize

      255KB

      MD5

      bc36b9736bc348bae8f9d1b9e4bb6a20

      SHA1

      d39a943ae2c3845b4c4ade6ae6c7d8b7573b0767

      SHA256

      43ff340cb5739dd7d8a3869fe3d1a9986afa469197bdb3bc3bd1a716eca4f962

      SHA512

      3d1df1b7c26f8ab70de7b68a71fef89b28209556d8a955c9085526e88b8fa92461361ff7c0ab725df9f6e420a6df734d3ccb8ff2388dbedce968b35e2383c223

    • \Windows\SysWOW64\yuyxrnmprvfkp.exe

      Filesize

      255KB

      MD5

      bc36b9736bc348bae8f9d1b9e4bb6a20

      SHA1

      d39a943ae2c3845b4c4ade6ae6c7d8b7573b0767

      SHA256

      43ff340cb5739dd7d8a3869fe3d1a9986afa469197bdb3bc3bd1a716eca4f962

      SHA512

      3d1df1b7c26f8ab70de7b68a71fef89b28209556d8a955c9085526e88b8fa92461361ff7c0ab725df9f6e420a6df734d3ccb8ff2388dbedce968b35e2383c223

    • memory/336-106-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/336-94-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/340-100-0x000000007105D000-0x0000000071068000-memory.dmp

      Filesize

      44KB

    • memory/340-97-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/340-88-0x00000000725F1000-0x00000000725F4000-memory.dmp

      Filesize

      12KB

    • memory/340-89-0x0000000070071000-0x0000000070073000-memory.dmp

      Filesize

      8KB

    • memory/960-102-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/960-90-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/960-95-0x00000000038F0000-0x0000000003990000-memory.dmp

      Filesize

      640KB

    • memory/1140-93-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1140-105-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1260-101-0x000007FEFBCA1000-0x000007FEFBCA3000-memory.dmp

      Filesize

      8KB

    • memory/1324-104-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1324-92-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1328-91-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1328-103-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1632-87-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1632-54-0x0000000076091000-0x0000000076093000-memory.dmp

      Filesize

      8KB

    • memory/1632-57-0x00000000032C0000-0x0000000003360000-memory.dmp

      Filesize

      640KB

    • memory/1632-56-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1640-107-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1640-96-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB