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Analysis

  • max time kernel
    152s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/10/2022, 16:43

General

  • Target

    b670819af5334319fb9c2d7b2ee66b167f9bda2877d204e7ff51ede308915ccd.exe

  • Size

    255KB

  • MD5

    83c2b73606debabb6f5b481d5df39bd5

  • SHA1

    6de359d76cf3fcfaeb01bb048003e676e97e44fa

  • SHA256

    b670819af5334319fb9c2d7b2ee66b167f9bda2877d204e7ff51ede308915ccd

  • SHA512

    943ec96e5c15afd5fdcaf1e169a890ef7c4897649fc9150c98dd736473301b76d21952e149fcdc8ff644e94ca0fad07f4af2d306a5ae01e3650987137e08e085

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJR:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIs

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 24 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 12 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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\b670819af5334319fb9c2d7b2ee66b167f9bda2877d204e7ff51ede308915ccd.exe
    "C:\Users\Admin\AppData\Local\Temp\b670819af5334319fb9c2d7b2ee66b167f9bda2877d204e7ff51ede308915ccd.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:4912
    • C:\Windows\SysWOW64\rmgvafhusu.exe
      rmgvafhusu.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:4592
      • C:\Windows\SysWOW64\gufhrcib.exe
        C:\Windows\system32\gufhrcib.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4376
    • C:\Windows\SysWOW64\fpfoalhyitciafy.exe
      fpfoalhyitciafy.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:5008
    • C:\Windows\SysWOW64\gufhrcib.exe
      gufhrcib.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1664
    • C:\Windows\SysWOW64\qdktwhbtmpzmi.exe
      qdktwhbtmpzmi.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4588
    • 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:3720

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe

    Filesize

    255KB

    MD5

    bbc72ced4989f0b9ab8aa64f7362f01b

    SHA1

    6aea7bd027fbd1eead80552d1b89adc92dda74db

    SHA256

    c488bdbc59ebd31335ab61edfba11a1d3d77638e921a16191090031643c6f2b2

    SHA512

    663e1a971e5c961cf2163c186be4d9a992d1142995c382adf7357092003052be07b0007638f003b8add2e915059d7e64ea8feb3a9aa4d8367c537b685639f61a

  • C:\Windows\SysWOW64\fpfoalhyitciafy.exe

    Filesize

    255KB

    MD5

    a01fc42080ac441d0c4dfd5f0a59a1b4

    SHA1

    8d0ca0c62826ed507b47711ad163a34994cc6aee

    SHA256

    529ab85d4bed5593df18235355b19a28a6d28ee884e59f97b56f18b1ca89ae54

    SHA512

    c031a02337f4f7f5a3323a46f0d982b20c516e2f1376aee28451476a657314e2f4d8ba63fa2c05e9ab2088c5a5d727f81be9a581af4667d3853299b215ec3194

  • C:\Windows\SysWOW64\fpfoalhyitciafy.exe

    Filesize

    255KB

    MD5

    a01fc42080ac441d0c4dfd5f0a59a1b4

    SHA1

    8d0ca0c62826ed507b47711ad163a34994cc6aee

    SHA256

    529ab85d4bed5593df18235355b19a28a6d28ee884e59f97b56f18b1ca89ae54

    SHA512

    c031a02337f4f7f5a3323a46f0d982b20c516e2f1376aee28451476a657314e2f4d8ba63fa2c05e9ab2088c5a5d727f81be9a581af4667d3853299b215ec3194

  • C:\Windows\SysWOW64\gufhrcib.exe

    Filesize

    255KB

    MD5

    3a1697daf8ae28339e082d33163374a8

    SHA1

    b7dc71b9711c8cc510e2d11c93fe062e98c73604

    SHA256

    d14d64ed04e07802c547d0d90fa51a21320c27f26564db8b151e9347bf077ff4

    SHA512

    bc59158aa4866340dab28e0c72fe48059b88611fa31701212ea271586da67bbb0a7c94e081a048a340b14124798395b5cb1e695601e1bfa8d1ff5bcdd048ccb7

  • C:\Windows\SysWOW64\gufhrcib.exe

    Filesize

    255KB

    MD5

    3a1697daf8ae28339e082d33163374a8

    SHA1

    b7dc71b9711c8cc510e2d11c93fe062e98c73604

    SHA256

    d14d64ed04e07802c547d0d90fa51a21320c27f26564db8b151e9347bf077ff4

    SHA512

    bc59158aa4866340dab28e0c72fe48059b88611fa31701212ea271586da67bbb0a7c94e081a048a340b14124798395b5cb1e695601e1bfa8d1ff5bcdd048ccb7

  • C:\Windows\SysWOW64\gufhrcib.exe

    Filesize

    255KB

    MD5

    3a1697daf8ae28339e082d33163374a8

    SHA1

    b7dc71b9711c8cc510e2d11c93fe062e98c73604

    SHA256

    d14d64ed04e07802c547d0d90fa51a21320c27f26564db8b151e9347bf077ff4

    SHA512

    bc59158aa4866340dab28e0c72fe48059b88611fa31701212ea271586da67bbb0a7c94e081a048a340b14124798395b5cb1e695601e1bfa8d1ff5bcdd048ccb7

  • C:\Windows\SysWOW64\qdktwhbtmpzmi.exe

    Filesize

    255KB

    MD5

    19b562269b14a83d83078a91dbed99fa

    SHA1

    9202f161df9c9f186aed6ac6dccde231111dfc30

    SHA256

    2a608e8eeb6e4ed1258d25010c479be4a2e8fa55edcfb3ac2b68afa3f0c54d26

    SHA512

    7e5f14d6271519715225fbc0b2424f50bbb11f07243891ad96e97a1be20c2fd700148f7c2e73ce9420d8b7dac574dbc32bbb0057c1662cecc72901cace628201

  • C:\Windows\SysWOW64\qdktwhbtmpzmi.exe

    Filesize

    255KB

    MD5

    19b562269b14a83d83078a91dbed99fa

    SHA1

    9202f161df9c9f186aed6ac6dccde231111dfc30

    SHA256

    2a608e8eeb6e4ed1258d25010c479be4a2e8fa55edcfb3ac2b68afa3f0c54d26

    SHA512

    7e5f14d6271519715225fbc0b2424f50bbb11f07243891ad96e97a1be20c2fd700148f7c2e73ce9420d8b7dac574dbc32bbb0057c1662cecc72901cace628201

  • C:\Windows\SysWOW64\rmgvafhusu.exe

    Filesize

    255KB

    MD5

    dbca8c01536270083b085208991a430d

    SHA1

    914e270c57e6a2be6de7ad1fd4047a5e3f084298

    SHA256

    f02ebd44899130a413de230dba1ec099b4f13717e877d88414177f4a8a54f075

    SHA512

    9fd3e56a3ac1d9038aab12f5172027661dd6a98a1f8fbb5a9a5626cf69c76d0ba8aa069e8c90526f01396d2ca6044d5cb5ab3fac3d9212226baf36497ee8950f

  • C:\Windows\SysWOW64\rmgvafhusu.exe

    Filesize

    255KB

    MD5

    dbca8c01536270083b085208991a430d

    SHA1

    914e270c57e6a2be6de7ad1fd4047a5e3f084298

    SHA256

    f02ebd44899130a413de230dba1ec099b4f13717e877d88414177f4a8a54f075

    SHA512

    9fd3e56a3ac1d9038aab12f5172027661dd6a98a1f8fbb5a9a5626cf69c76d0ba8aa069e8c90526f01396d2ca6044d5cb5ab3fac3d9212226baf36497ee8950f

  • C:\Windows\mydoc.rtf

    Filesize

    223B

    MD5

    06604e5941c126e2e7be02c5cd9f62ec

    SHA1

    4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

    SHA256

    85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

    SHA512

    803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

  • \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe

    Filesize

    255KB

    MD5

    2f6396c8d7b1f474c04cb29e95e936f5

    SHA1

    74b0872021ef68391e3191f376f62c3b7db38141

    SHA256

    8ce7975243a9fad3adcb3b0f8921bba1a2f23feb0dc77a5f96fd5d87774797fd

    SHA512

    73688d0dfa4977409b58c22cb428fba2b3135e9e64c2afe90e0b3892ed3af3b432c4b8509c8f221e78df30526bb9316094054e0185de1fa4087082f1313683c4

  • \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe

    Filesize

    255KB

    MD5

    4f1628c2b46068bc2ee08c904761fc98

    SHA1

    1e88e661f5d569f8c4e0314e3b0d9a77d810c93d

    SHA256

    8533e58b1ac3c6dbd0895a392e5dee88e8c24a5f7011c9ef2b15cabdffff9c5c

    SHA512

    8a3cae90a7b9695a05df6e5d03b007cf269f9551d737482184c7b26225e321cbf5d05f7ba7d2b4a999a1de2ccd7ee7325b65826b7ce9a71b57949e784630e7ad

  • memory/1664-165-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/1664-147-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/3720-154-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/3720-158-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/3720-172-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/3720-174-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/3720-161-0x00007FFB61FD0000-0x00007FFB61FE0000-memory.dmp

    Filesize

    64KB

  • memory/3720-171-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/3720-155-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/3720-156-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/3720-157-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/3720-160-0x00007FFB61FD0000-0x00007FFB61FE0000-memory.dmp

    Filesize

    64KB

  • memory/3720-173-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

    Filesize

    64KB

  • memory/4376-153-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4376-167-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4588-166-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4588-148-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4592-163-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4592-145-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4912-152-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4912-132-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/5008-164-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/5008-146-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB