Analysis

  • max time kernel
    220s
  • max time network
    181s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 19:09

General

  • Target

    8a3f57686e25f9bd8539b0a348d4d3ef862adb172413e43341c098862d890962.exe

  • Size

    255KB

  • MD5

    ab87c0fd2869af8c5b45ead77234c3ff

  • SHA1

    433c4ef2f770eb4e8a1110482cfe10392d1e98e3

  • SHA256

    8a3f57686e25f9bd8539b0a348d4d3ef862adb172413e43341c098862d890962

  • SHA512

    438575a3b7e3ec3bf729299126b940aa80745f0a6c7f9f619ae2771b637eab4afcaf509b7235f065cf79adc5e5cfd07e13b69cf7f0b0f5dc36956b1fec295a2b

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJx:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIe

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 29 IoCs

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

  • Loads dropped DLL 5 IoCs
  • 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 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 20 IoCs
  • Suspicious use of FindShellTrayWindow 63 IoCs
  • Suspicious use of SendNotifyMessage 46 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8a3f57686e25f9bd8539b0a348d4d3ef862adb172413e43341c098862d890962.exe
    "C:\Users\Admin\AppData\Local\Temp\8a3f57686e25f9bd8539b0a348d4d3ef862adb172413e43341c098862d890962.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:1692
    • C:\Windows\SysWOW64\fxdrkjrozz.exe
      fxdrkjrozz.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:1464
      • C:\Windows\SysWOW64\ugzobtdj.exe
        C:\Windows\system32\ugzobtdj.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:1112
    • C:\Windows\SysWOW64\sjpsmdfckxguuvj.exe
      sjpsmdfckxguuvj.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1484
    • C:\Windows\SysWOW64\ugzobtdj.exe
      ugzobtdj.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:1592
    • C:\Windows\SysWOW64\bzubkututalgv.exe
      bzubkututalgv.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1364
    • 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:1308
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1144
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Modifies Internet Explorer settings
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1476
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x58c
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:960

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            255KB

            MD5

            cf33df17feddcfc8107b92ef6cfa3cf4

            SHA1

            cfb6fa57ee94f1361460fa96c8fe0f93c92bc198

            SHA256

            41e23e383df34ca83a087d6150f00f9b6bd0e06e99c2ad8606dcb66cad9cc3b1

            SHA512

            4d85fb3d4789ec29e5e917844eb71f73fe61a793bdbd8f28613dd39a500d3f0615d735097dfe89954eeec271fb0d71a802be8a94cc44adee6c0f73e364e4c24e

          • C:\Windows\SysWOW64\bzubkututalgv.exe

            Filesize

            255KB

            MD5

            019f31415a03fdd8c1134f5d2bb100c9

            SHA1

            bbfd39e16e50e5ae245c839e189c1ad93eac90c1

            SHA256

            760b1529b5df01f938d69af9c31b54519583516b0f1dffd7849a8f88e0008fb0

            SHA512

            d91044e8b98436529a7eba8da3eccaf01d0bf5f9e7979f844837f616ad2ac91374b17f64ee56cdf1377e2e0a967e59f53f96873a49f5d94c4b9f387345afa740

          • C:\Windows\SysWOW64\bzubkututalgv.exe

            Filesize

            255KB

            MD5

            019f31415a03fdd8c1134f5d2bb100c9

            SHA1

            bbfd39e16e50e5ae245c839e189c1ad93eac90c1

            SHA256

            760b1529b5df01f938d69af9c31b54519583516b0f1dffd7849a8f88e0008fb0

            SHA512

            d91044e8b98436529a7eba8da3eccaf01d0bf5f9e7979f844837f616ad2ac91374b17f64ee56cdf1377e2e0a967e59f53f96873a49f5d94c4b9f387345afa740

          • C:\Windows\SysWOW64\fxdrkjrozz.exe

            Filesize

            255KB

            MD5

            a446964125a0bca672065560175f78ba

            SHA1

            32660eb1b6c7f46cef6503d56c40ded05c3221e1

            SHA256

            b58c1720f9b58c239289485d415c57eab8d6533d4bfe66e9dfd0a5d95d654d01

            SHA512

            bd29ddb3cfe3e99a3798f8589df29643ddb4c1b73caf375a350c5e0f7c7a0e80b1cfa559b85bfa5b8f5a24588a4d1a551dc2e4e8da98ff351057a9812f0f5f90

          • C:\Windows\SysWOW64\fxdrkjrozz.exe

            Filesize

            255KB

            MD5

            a446964125a0bca672065560175f78ba

            SHA1

            32660eb1b6c7f46cef6503d56c40ded05c3221e1

            SHA256

            b58c1720f9b58c239289485d415c57eab8d6533d4bfe66e9dfd0a5d95d654d01

            SHA512

            bd29ddb3cfe3e99a3798f8589df29643ddb4c1b73caf375a350c5e0f7c7a0e80b1cfa559b85bfa5b8f5a24588a4d1a551dc2e4e8da98ff351057a9812f0f5f90

          • C:\Windows\SysWOW64\sjpsmdfckxguuvj.exe

            Filesize

            255KB

            MD5

            e10d185f7ab7e64a32781af254d38988

            SHA1

            991bcc1a13624c728f10ff097ba60029e61614cc

            SHA256

            98cf1743c2dfa0bcc76d15714d716fd6ccf9f363fa5ac9578ae27965e4aeed33

            SHA512

            c9e23f621dc0c33ed2d4f604b03ab034ae178f2114665090659e3fecf9f1ce73c744641926b1a23c2376db5c24dac49cb54fadd927f7dbe48b18edb3f6c844ec

          • C:\Windows\SysWOW64\sjpsmdfckxguuvj.exe

            Filesize

            255KB

            MD5

            e10d185f7ab7e64a32781af254d38988

            SHA1

            991bcc1a13624c728f10ff097ba60029e61614cc

            SHA256

            98cf1743c2dfa0bcc76d15714d716fd6ccf9f363fa5ac9578ae27965e4aeed33

            SHA512

            c9e23f621dc0c33ed2d4f604b03ab034ae178f2114665090659e3fecf9f1ce73c744641926b1a23c2376db5c24dac49cb54fadd927f7dbe48b18edb3f6c844ec

          • C:\Windows\SysWOW64\ugzobtdj.exe

            Filesize

            255KB

            MD5

            ed38c0e5fa2c821bc983059aa0c6f958

            SHA1

            336755fea109367dcc4b27809de554222f7078ed

            SHA256

            b4c3d2d234d59d143d4e64e6313e1f756f7dc8f6d7daba1e67cf445cf603c7a8

            SHA512

            9118ae0ddb9fa81cd9bae269a367bc27cd4e3d5cca8f45fb014a5da2589784be9767b6c9065bbb9c6ff0fb456071a2a9935ab87a5b1e169ffaf0a438d658df4c

          • C:\Windows\SysWOW64\ugzobtdj.exe

            Filesize

            255KB

            MD5

            ed38c0e5fa2c821bc983059aa0c6f958

            SHA1

            336755fea109367dcc4b27809de554222f7078ed

            SHA256

            b4c3d2d234d59d143d4e64e6313e1f756f7dc8f6d7daba1e67cf445cf603c7a8

            SHA512

            9118ae0ddb9fa81cd9bae269a367bc27cd4e3d5cca8f45fb014a5da2589784be9767b6c9065bbb9c6ff0fb456071a2a9935ab87a5b1e169ffaf0a438d658df4c

          • C:\Windows\SysWOW64\ugzobtdj.exe

            Filesize

            255KB

            MD5

            ed38c0e5fa2c821bc983059aa0c6f958

            SHA1

            336755fea109367dcc4b27809de554222f7078ed

            SHA256

            b4c3d2d234d59d143d4e64e6313e1f756f7dc8f6d7daba1e67cf445cf603c7a8

            SHA512

            9118ae0ddb9fa81cd9bae269a367bc27cd4e3d5cca8f45fb014a5da2589784be9767b6c9065bbb9c6ff0fb456071a2a9935ab87a5b1e169ffaf0a438d658df4c

          • C:\Windows\mydoc.rtf

            Filesize

            223B

            MD5

            06604e5941c126e2e7be02c5cd9f62ec

            SHA1

            4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

            SHA256

            85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

            SHA512

            803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

          • \Windows\SysWOW64\bzubkututalgv.exe

            Filesize

            255KB

            MD5

            019f31415a03fdd8c1134f5d2bb100c9

            SHA1

            bbfd39e16e50e5ae245c839e189c1ad93eac90c1

            SHA256

            760b1529b5df01f938d69af9c31b54519583516b0f1dffd7849a8f88e0008fb0

            SHA512

            d91044e8b98436529a7eba8da3eccaf01d0bf5f9e7979f844837f616ad2ac91374b17f64ee56cdf1377e2e0a967e59f53f96873a49f5d94c4b9f387345afa740

          • \Windows\SysWOW64\fxdrkjrozz.exe

            Filesize

            255KB

            MD5

            a446964125a0bca672065560175f78ba

            SHA1

            32660eb1b6c7f46cef6503d56c40ded05c3221e1

            SHA256

            b58c1720f9b58c239289485d415c57eab8d6533d4bfe66e9dfd0a5d95d654d01

            SHA512

            bd29ddb3cfe3e99a3798f8589df29643ddb4c1b73caf375a350c5e0f7c7a0e80b1cfa559b85bfa5b8f5a24588a4d1a551dc2e4e8da98ff351057a9812f0f5f90

          • \Windows\SysWOW64\sjpsmdfckxguuvj.exe

            Filesize

            255KB

            MD5

            e10d185f7ab7e64a32781af254d38988

            SHA1

            991bcc1a13624c728f10ff097ba60029e61614cc

            SHA256

            98cf1743c2dfa0bcc76d15714d716fd6ccf9f363fa5ac9578ae27965e4aeed33

            SHA512

            c9e23f621dc0c33ed2d4f604b03ab034ae178f2114665090659e3fecf9f1ce73c744641926b1a23c2376db5c24dac49cb54fadd927f7dbe48b18edb3f6c844ec

          • \Windows\SysWOW64\ugzobtdj.exe

            Filesize

            255KB

            MD5

            ed38c0e5fa2c821bc983059aa0c6f958

            SHA1

            336755fea109367dcc4b27809de554222f7078ed

            SHA256

            b4c3d2d234d59d143d4e64e6313e1f756f7dc8f6d7daba1e67cf445cf603c7a8

            SHA512

            9118ae0ddb9fa81cd9bae269a367bc27cd4e3d5cca8f45fb014a5da2589784be9767b6c9065bbb9c6ff0fb456071a2a9935ab87a5b1e169ffaf0a438d658df4c

          • \Windows\SysWOW64\ugzobtdj.exe

            Filesize

            255KB

            MD5

            ed38c0e5fa2c821bc983059aa0c6f958

            SHA1

            336755fea109367dcc4b27809de554222f7078ed

            SHA256

            b4c3d2d234d59d143d4e64e6313e1f756f7dc8f6d7daba1e67cf445cf603c7a8

            SHA512

            9118ae0ddb9fa81cd9bae269a367bc27cd4e3d5cca8f45fb014a5da2589784be9767b6c9065bbb9c6ff0fb456071a2a9935ab87a5b1e169ffaf0a438d658df4c

          • memory/1112-100-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1112-94-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1308-95-0x0000000070D4D000-0x0000000070D58000-memory.dmp

            Filesize

            44KB

          • memory/1308-91-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1308-101-0x0000000070D4D000-0x0000000070D58000-memory.dmp

            Filesize

            44KB

          • memory/1308-85-0x00000000722E1000-0x00000000722E4000-memory.dmp

            Filesize

            12KB

          • memory/1308-88-0x000000006FD61000-0x000000006FD63000-memory.dmp

            Filesize

            8KB

          • memory/1364-99-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1364-84-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1464-96-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1464-81-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1476-78-0x000007FEFB2A1000-0x000007FEFB2A3000-memory.dmp

            Filesize

            8KB

          • memory/1484-82-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1484-97-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1592-98-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1592-83-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1692-57-0x0000000002ED0000-0x0000000002F70000-memory.dmp

            Filesize

            640KB

          • memory/1692-80-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1692-58-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB

          • memory/1692-54-0x0000000075831000-0x0000000075833000-memory.dmp

            Filesize

            8KB

          • memory/1692-55-0x0000000000400000-0x00000000004A0000-memory.dmp

            Filesize

            640KB