Analysis

  • max time kernel
    151s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    07-11-2022 21:32

General

  • Target

    972332a1293822f3c16ad8348e11707256437326aa36929cd6f8c1ce32f45de2.exe

  • Size

    255KB

  • MD5

    0bb8bf255ed1dfa18518b09099b4c050

  • SHA1

    bb8c0a006e2898cc0e9ed6f81aae0a9d3b0efb8f

  • SHA256

    972332a1293822f3c16ad8348e11707256437326aa36929cd6f8c1ce32f45de2

  • SHA512

    79839390c7c26eeb16936b10453b78f617aaacc92f8a90eb1a14446c8aec92c7b5fa37cc5db4d180b76a5e70a26a93dde246217466142b8ddcf5e35e35c608cb

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJK:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIz

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
  • UPX packed file 29 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 13 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 15 IoCs
  • Drops file in Windows directory 5 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 FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\972332a1293822f3c16ad8348e11707256437326aa36929cd6f8c1ce32f45de2.exe
    "C:\Users\Admin\AppData\Local\Temp\972332a1293822f3c16ad8348e11707256437326aa36929cd6f8c1ce32f45de2.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:288
    • C:\Windows\SysWOW64\kjyjyqemhk.exe
      kjyjyqemhk.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:1724
      • C:\Windows\SysWOW64\ynmdqylo.exe
        C:\Windows\system32\ynmdqylo.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:836
    • C:\Windows\SysWOW64\ytsoguaehjnvoet.exe
      ytsoguaehjnvoet.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:976
    • C:\Windows\SysWOW64\ynmdqylo.exe
      ynmdqylo.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:956
    • C:\Windows\SysWOW64\cippbawyiztyj.exe
      cippbawyiztyj.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1480
    • 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:1084
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:556

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\Downloads\SwitchWrite.doc.exe

      Filesize

      255KB

      MD5

      7855b61469c4f96c851432a6ea300cd9

      SHA1

      5e22c232f4ab1fd6e71f7a64412a4ae7790c4cf0

      SHA256

      dbf431b6cd3e7b805ad4f1ec568ee8388b4d7015229b4300e45c05a09a4e9b92

      SHA512

      3deb818ee60e4bb2d1ae9e7aab03f12842e77e2ef140ded668bd42593a6e37f887a28e0de0fa3fb8f59c2264b872e3a7e8e1aef9f72a7022652bf23a334f9eee

    • C:\Windows\SysWOW64\cippbawyiztyj.exe

      Filesize

      255KB

      MD5

      36a786ce9614ebff225128ee0be0a408

      SHA1

      5b0cbc53f12085eb5a7893d6d75bb967525c60b6

      SHA256

      864952df1084cbe09f4b18f79236d19a1f9e5765b3db40875b08b8b762718e0f

      SHA512

      537ef9ea92aa06b1b8abe63f087432f97df5c08d33992d42fdfe47176ad1ed2b6ac2a75284668becd3ec47ebec45218958ec7788d456367fb7ed9a092f903983

    • C:\Windows\SysWOW64\cippbawyiztyj.exe

      Filesize

      255KB

      MD5

      36a786ce9614ebff225128ee0be0a408

      SHA1

      5b0cbc53f12085eb5a7893d6d75bb967525c60b6

      SHA256

      864952df1084cbe09f4b18f79236d19a1f9e5765b3db40875b08b8b762718e0f

      SHA512

      537ef9ea92aa06b1b8abe63f087432f97df5c08d33992d42fdfe47176ad1ed2b6ac2a75284668becd3ec47ebec45218958ec7788d456367fb7ed9a092f903983

    • C:\Windows\SysWOW64\kjyjyqemhk.exe

      Filesize

      255KB

      MD5

      0acde95ec1a617113e09f86f69cd2742

      SHA1

      10faf18dd7cf3bd49ce815ad1dceb0d699eef6c1

      SHA256

      a900680832a65a585a67934ffac15685a193108ae61492a16be0a3f8eea7977c

      SHA512

      cd211befbbecaaecb768ecb6ad793562c6aa0bfc11d90d79b38ea1b1f93cebc5332306f7c2b617302ad7784f564cc9d86cbb9e313128a8c6c3fc4bed3ea205a5

    • C:\Windows\SysWOW64\kjyjyqemhk.exe

      Filesize

      255KB

      MD5

      0acde95ec1a617113e09f86f69cd2742

      SHA1

      10faf18dd7cf3bd49ce815ad1dceb0d699eef6c1

      SHA256

      a900680832a65a585a67934ffac15685a193108ae61492a16be0a3f8eea7977c

      SHA512

      cd211befbbecaaecb768ecb6ad793562c6aa0bfc11d90d79b38ea1b1f93cebc5332306f7c2b617302ad7784f564cc9d86cbb9e313128a8c6c3fc4bed3ea205a5

    • C:\Windows\SysWOW64\ynmdqylo.exe

      Filesize

      255KB

      MD5

      43ef85d6ad3b908167514b14e40400db

      SHA1

      50ea5f54687358b32c4a4cde134266f01ecf910f

      SHA256

      b6d162ed3a7bc371d59a033e198909f625627e3f82b1dbdec6ef2f3d8ab179f5

      SHA512

      79464237277123af3a47ed0ec36e03af33a656d94db486ac01c287a470a167773c3345bc8b54a658336f467464cbb1932823499fdb1274b52839908e0ebe5627

    • C:\Windows\SysWOW64\ynmdqylo.exe

      Filesize

      255KB

      MD5

      43ef85d6ad3b908167514b14e40400db

      SHA1

      50ea5f54687358b32c4a4cde134266f01ecf910f

      SHA256

      b6d162ed3a7bc371d59a033e198909f625627e3f82b1dbdec6ef2f3d8ab179f5

      SHA512

      79464237277123af3a47ed0ec36e03af33a656d94db486ac01c287a470a167773c3345bc8b54a658336f467464cbb1932823499fdb1274b52839908e0ebe5627

    • C:\Windows\SysWOW64\ynmdqylo.exe

      Filesize

      255KB

      MD5

      43ef85d6ad3b908167514b14e40400db

      SHA1

      50ea5f54687358b32c4a4cde134266f01ecf910f

      SHA256

      b6d162ed3a7bc371d59a033e198909f625627e3f82b1dbdec6ef2f3d8ab179f5

      SHA512

      79464237277123af3a47ed0ec36e03af33a656d94db486ac01c287a470a167773c3345bc8b54a658336f467464cbb1932823499fdb1274b52839908e0ebe5627

    • C:\Windows\SysWOW64\ytsoguaehjnvoet.exe

      Filesize

      255KB

      MD5

      5ce0304aba8a95b3d9d88e94a05538d1

      SHA1

      b33e3ee14623db95d7ac9d0138a5af87814c71e2

      SHA256

      66c35efe331b5c22f5d540bf782c4b9db2f615ac1d422f69399aac0779d69f29

      SHA512

      955beb542bbdd3f1527933932b821d8dcfd3abee720f7ab14040c9103d95493e9873d0a51104c9d1b6b7f1f546f82e25ebbb6cd7120e2a683a26e8b915096c35

    • C:\Windows\SysWOW64\ytsoguaehjnvoet.exe

      Filesize

      255KB

      MD5

      5ce0304aba8a95b3d9d88e94a05538d1

      SHA1

      b33e3ee14623db95d7ac9d0138a5af87814c71e2

      SHA256

      66c35efe331b5c22f5d540bf782c4b9db2f615ac1d422f69399aac0779d69f29

      SHA512

      955beb542bbdd3f1527933932b821d8dcfd3abee720f7ab14040c9103d95493e9873d0a51104c9d1b6b7f1f546f82e25ebbb6cd7120e2a683a26e8b915096c35

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\cippbawyiztyj.exe

      Filesize

      255KB

      MD5

      36a786ce9614ebff225128ee0be0a408

      SHA1

      5b0cbc53f12085eb5a7893d6d75bb967525c60b6

      SHA256

      864952df1084cbe09f4b18f79236d19a1f9e5765b3db40875b08b8b762718e0f

      SHA512

      537ef9ea92aa06b1b8abe63f087432f97df5c08d33992d42fdfe47176ad1ed2b6ac2a75284668becd3ec47ebec45218958ec7788d456367fb7ed9a092f903983

    • \Windows\SysWOW64\kjyjyqemhk.exe

      Filesize

      255KB

      MD5

      0acde95ec1a617113e09f86f69cd2742

      SHA1

      10faf18dd7cf3bd49ce815ad1dceb0d699eef6c1

      SHA256

      a900680832a65a585a67934ffac15685a193108ae61492a16be0a3f8eea7977c

      SHA512

      cd211befbbecaaecb768ecb6ad793562c6aa0bfc11d90d79b38ea1b1f93cebc5332306f7c2b617302ad7784f564cc9d86cbb9e313128a8c6c3fc4bed3ea205a5

    • \Windows\SysWOW64\ynmdqylo.exe

      Filesize

      255KB

      MD5

      43ef85d6ad3b908167514b14e40400db

      SHA1

      50ea5f54687358b32c4a4cde134266f01ecf910f

      SHA256

      b6d162ed3a7bc371d59a033e198909f625627e3f82b1dbdec6ef2f3d8ab179f5

      SHA512

      79464237277123af3a47ed0ec36e03af33a656d94db486ac01c287a470a167773c3345bc8b54a658336f467464cbb1932823499fdb1274b52839908e0ebe5627

    • \Windows\SysWOW64\ynmdqylo.exe

      Filesize

      255KB

      MD5

      43ef85d6ad3b908167514b14e40400db

      SHA1

      50ea5f54687358b32c4a4cde134266f01ecf910f

      SHA256

      b6d162ed3a7bc371d59a033e198909f625627e3f82b1dbdec6ef2f3d8ab179f5

      SHA512

      79464237277123af3a47ed0ec36e03af33a656d94db486ac01c287a470a167773c3345bc8b54a658336f467464cbb1932823499fdb1274b52839908e0ebe5627

    • \Windows\SysWOW64\ytsoguaehjnvoet.exe

      Filesize

      255KB

      MD5

      5ce0304aba8a95b3d9d88e94a05538d1

      SHA1

      b33e3ee14623db95d7ac9d0138a5af87814c71e2

      SHA256

      66c35efe331b5c22f5d540bf782c4b9db2f615ac1d422f69399aac0779d69f29

      SHA512

      955beb542bbdd3f1527933932b821d8dcfd3abee720f7ab14040c9103d95493e9873d0a51104c9d1b6b7f1f546f82e25ebbb6cd7120e2a683a26e8b915096c35

    • memory/288-54-0x0000000075B11000-0x0000000075B13000-memory.dmp

      Filesize

      8KB

    • memory/288-87-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/288-78-0x00000000033E0000-0x0000000003480000-memory.dmp

      Filesize

      640KB

    • memory/288-56-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/288-57-0x00000000033E0000-0x0000000003480000-memory.dmp

      Filesize

      640KB

    • memory/556-103-0x000007FEFBC61000-0x000007FEFBC63000-memory.dmp

      Filesize

      8KB

    • memory/556-102-0x0000000000000000-mapping.dmp

    • memory/836-88-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/836-100-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/836-83-0x0000000000000000-mapping.dmp

    • memory/956-80-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/956-97-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/956-67-0x0000000000000000-mapping.dmp

    • memory/976-63-0x0000000000000000-mapping.dmp

    • memory/976-79-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/976-96-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1084-94-0x00000000711BD000-0x00000000711C8000-memory.dmp

      Filesize

      44KB

    • memory/1084-90-0x00000000701D1000-0x00000000701D3000-memory.dmp

      Filesize

      8KB

    • memory/1084-106-0x00000000711BD000-0x00000000711C8000-memory.dmp

      Filesize

      44KB

    • memory/1084-89-0x0000000072751000-0x0000000072754000-memory.dmp

      Filesize

      12KB

    • memory/1084-86-0x0000000000000000-mapping.dmp

    • memory/1084-91-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1084-105-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1084-101-0x00000000711BD000-0x00000000711C8000-memory.dmp

      Filesize

      44KB

    • memory/1480-72-0x0000000000000000-mapping.dmp

    • memory/1480-98-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1480-81-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1724-99-0x0000000003880000-0x0000000003920000-memory.dmp

      Filesize

      640KB

    • memory/1724-58-0x0000000000000000-mapping.dmp

    • memory/1724-77-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1724-95-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB