Analysis

  • max time kernel
    166s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-11-2022 21:35

General

  • Target

    3c8346c61e2b8b076c8c463c69864ad2ffc2d942bedb1fd0b40b539ae6817457.exe

  • Size

    255KB

  • MD5

    037cc30aa2051f1d9c0c7611e3816d91

  • SHA1

    cc1e284a10e23122239b2c9cae356c2470a058dc

  • SHA256

    3c8346c61e2b8b076c8c463c69864ad2ffc2d942bedb1fd0b40b539ae6817457

  • SHA512

    6279b269daa1728b5de5cea5707a21c9f0aa83bb22e77f59b0f4c43cbed49fb0e471f90b16f211d9610b863546eded8c52e604872a4db18d72aaa92a7b399efc

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJc:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIf

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 11 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 3 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\3c8346c61e2b8b076c8c463c69864ad2ffc2d942bedb1fd0b40b539ae6817457.exe
    "C:\Users\Admin\AppData\Local\Temp\3c8346c61e2b8b076c8c463c69864ad2ffc2d942bedb1fd0b40b539ae6817457.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:3516
    • C:\Windows\SysWOW64\vzgipjlqnt.exe
      vzgipjlqnt.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:4864
      • C:\Windows\SysWOW64\jrsssaiy.exe
        C:\Windows\system32\jrsssaiy.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:4080
    • C:\Windows\SysWOW64\gcrkzpkrgtocyhn.exe
      gcrkzpkrgtocyhn.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:5056
    • C:\Windows\SysWOW64\jrsssaiy.exe
      jrsssaiy.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:4920
    • C:\Windows\SysWOW64\lxkwsepbsywyg.exe
      lxkwsepbsywyg.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1756
    • 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:2784

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    255KB

    MD5

    bf67167194302715508569e2f5d9f7a0

    SHA1

    84380a3a5cb07b667dd8ee3770feff122e40b25d

    SHA256

    3aff96a2c3de796df2fd03eacb7c50a5c32062f7a1bb75ae4c393d93cf94351f

    SHA512

    de5fa3af63560d910c1b21e59aebb9a62d64ef2e7505aa7fbc9a8b4e2169359b6cd9c5a6eac490503c6f4ac5ee64daa22ec392bd5b8d398fe65b03c3706587ac

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

    Filesize

    255KB

    MD5

    fac08b4367b8daad3ba03b8a6497e011

    SHA1

    25d69ffefb9b585394ae1f6b4a8ae643ecabb349

    SHA256

    d5e025378654d2935c894f84789f345989c9ffcc4236247a9e4f828f038c411c

    SHA512

    08a2996dcccb7fb1b75d25b5fb9b38408681e33a1a3e846b6f4a9a0842a5c2efe1f4b36b27f52a851b0147ae961d4eef11e12cb4d1bfa4f8cfef3db5a58b118b

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

    Filesize

    255KB

    MD5

    8e1a0c8e2996cef6248590a48482be56

    SHA1

    5a0276cb9c53daff29516b9a2d7b03f9f08e43ef

    SHA256

    332e50f70f54f4198d797a5064338d5ccf2bcdf73ae69a8f64c0441e2b4dc0b7

    SHA512

    bcb8cee30756c4b9711f6cdda8cba6ac6a01c00c6117de9e6f9d1ad4634de8921363682e56ea33770585cf71c0ba0ef7cdc64dc027cfd6b385e1dc1258b272e0

  • C:\Windows\SysWOW64\gcrkzpkrgtocyhn.exe

    Filesize

    255KB

    MD5

    72be35d722580e3a59cacc5bcb7e67e5

    SHA1

    f0a4052246f4a24a37f7636aa4a13ca8c155cb18

    SHA256

    2382dc17c5c34bb3c494a453278a17abc8416e4b25e87c691fb5ee83eca00586

    SHA512

    4bfed1389b6641a57fde2c7bfb88475c18274e3731184efc1753669c402c3f80283744c778732d0877054c55c2f602d40908f53cdb63ead2dbb799f91492a902

  • C:\Windows\SysWOW64\gcrkzpkrgtocyhn.exe

    Filesize

    255KB

    MD5

    72be35d722580e3a59cacc5bcb7e67e5

    SHA1

    f0a4052246f4a24a37f7636aa4a13ca8c155cb18

    SHA256

    2382dc17c5c34bb3c494a453278a17abc8416e4b25e87c691fb5ee83eca00586

    SHA512

    4bfed1389b6641a57fde2c7bfb88475c18274e3731184efc1753669c402c3f80283744c778732d0877054c55c2f602d40908f53cdb63ead2dbb799f91492a902

  • C:\Windows\SysWOW64\jrsssaiy.exe

    Filesize

    255KB

    MD5

    75180fa64f501773ca4471ea4dbaae57

    SHA1

    acc393a3e8bae8f4e9f456885c425e677590accb

    SHA256

    77f32417b42cf5566546dd232395348df0daae71ab581cd620cdadcc58d2bc8b

    SHA512

    3ee477a53ffc6cdcec254fbd5caf7bd15472f95dc029f28edc8659bdffb5b4481e20cef27f6845bdc7887160d05524f2ff3a52c885de2e64c4bfa881f2d2a5b2

  • C:\Windows\SysWOW64\jrsssaiy.exe

    Filesize

    255KB

    MD5

    75180fa64f501773ca4471ea4dbaae57

    SHA1

    acc393a3e8bae8f4e9f456885c425e677590accb

    SHA256

    77f32417b42cf5566546dd232395348df0daae71ab581cd620cdadcc58d2bc8b

    SHA512

    3ee477a53ffc6cdcec254fbd5caf7bd15472f95dc029f28edc8659bdffb5b4481e20cef27f6845bdc7887160d05524f2ff3a52c885de2e64c4bfa881f2d2a5b2

  • C:\Windows\SysWOW64\jrsssaiy.exe

    Filesize

    255KB

    MD5

    75180fa64f501773ca4471ea4dbaae57

    SHA1

    acc393a3e8bae8f4e9f456885c425e677590accb

    SHA256

    77f32417b42cf5566546dd232395348df0daae71ab581cd620cdadcc58d2bc8b

    SHA512

    3ee477a53ffc6cdcec254fbd5caf7bd15472f95dc029f28edc8659bdffb5b4481e20cef27f6845bdc7887160d05524f2ff3a52c885de2e64c4bfa881f2d2a5b2

  • C:\Windows\SysWOW64\lxkwsepbsywyg.exe

    Filesize

    255KB

    MD5

    b906c3bc2caa62fc5626c379b864bf4a

    SHA1

    7433930fb231e156fc802d4ff2c718afa156c140

    SHA256

    b3efe8e0cb910d7a102ea5215c1c470d173b85181bae090d9a423c92d5559163

    SHA512

    a87666f2300895021f94c3149c2cf88d245a749154f706a38222127a67bf4eac836f6c0905793cfe807d7fa7840309493550d5c0bcb88104cb93ff110173c8b3

  • C:\Windows\SysWOW64\lxkwsepbsywyg.exe

    Filesize

    255KB

    MD5

    b906c3bc2caa62fc5626c379b864bf4a

    SHA1

    7433930fb231e156fc802d4ff2c718afa156c140

    SHA256

    b3efe8e0cb910d7a102ea5215c1c470d173b85181bae090d9a423c92d5559163

    SHA512

    a87666f2300895021f94c3149c2cf88d245a749154f706a38222127a67bf4eac836f6c0905793cfe807d7fa7840309493550d5c0bcb88104cb93ff110173c8b3

  • C:\Windows\SysWOW64\vzgipjlqnt.exe

    Filesize

    255KB

    MD5

    0f4a8a9f7933b670989c6b7cde79445f

    SHA1

    0afb8f5a890ab7b56b510b62d40e7b6982f7861c

    SHA256

    e84e6ea37ef457ca36188714070e82d671354195a21e92493c12afe68c939d5f

    SHA512

    b6bab8a434416384ba0d24193ca8dbb3359ecc1c27312dcfb8285b613deead097b75ee90214d724c01c75f25cd98329eed2c1bcaba7b6d7b3077825ece757328

  • C:\Windows\SysWOW64\vzgipjlqnt.exe

    Filesize

    255KB

    MD5

    0f4a8a9f7933b670989c6b7cde79445f

    SHA1

    0afb8f5a890ab7b56b510b62d40e7b6982f7861c

    SHA256

    e84e6ea37ef457ca36188714070e82d671354195a21e92493c12afe68c939d5f

    SHA512

    b6bab8a434416384ba0d24193ca8dbb3359ecc1c27312dcfb8285b613deead097b75ee90214d724c01c75f25cd98329eed2c1bcaba7b6d7b3077825ece757328

  • C:\Windows\mydoc.rtf

    Filesize

    223B

    MD5

    06604e5941c126e2e7be02c5cd9f62ec

    SHA1

    4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

    SHA256

    85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

    SHA512

    803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

  • memory/1756-167-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/1756-148-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/2784-162-0x00007FF8CF0D0000-0x00007FF8CF0E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-161-0x00007FF8CF0D0000-0x00007FF8CF0E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-173-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-174-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-172-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-154-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-155-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-156-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-157-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-158-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-171-0x00007FF8D11D0000-0x00007FF8D11E0000-memory.dmp

    Filesize

    64KB

  • memory/3516-132-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/3516-152-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4080-168-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4080-153-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4864-164-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4864-145-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4920-166-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/4920-147-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/5056-146-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB

  • memory/5056-165-0x0000000000400000-0x00000000004A0000-memory.dmp

    Filesize

    640KB