Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    07/01/2024, 19:20

General

  • Target

    acacf07347ddcc9e387db0e4b34c443b.exe

  • Size

    512KB

  • MD5

    acacf07347ddcc9e387db0e4b34c443b

  • SHA1

    41284991c81536b0509293b6e9e949ffce2754a3

  • SHA256

    378b9ddad58713a141c9d024072c52b07d558129a576288469bd1c0fc0f8909b

  • SHA512

    12f4e8ef5fa0e43ec1deb1350f95cd9a017dbc1c479be54f29eae4392f3c64ad193d0e32d136007e674a7fbf67f4f4182774271b41ab7a311e1cc3392e63723b

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6F:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5Q

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
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • Executes dropped EXE 5 IoCs
  • 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 3 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 8 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 21 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 12 IoCs
  • Suspicious use of FindShellTrayWindow 47 IoCs
  • Suspicious use of SendNotifyMessage 35 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\acacf07347ddcc9e387db0e4b34c443b.exe
    "C:\Users\Admin\AppData\Local\Temp\acacf07347ddcc9e387db0e4b34c443b.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2452
    • C:\Windows\SysWOW64\zvvrsraxcl.exe
      zvvrsraxcl.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:2852
      • C:\Windows\SysWOW64\bnrndwmv.exe
        C:\Windows\system32\bnrndwmv.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        PID:2624
    • C:\Windows\SysWOW64\wjcyqyysmurgtuz.exe
      wjcyqyysmurgtuz.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2836
    • C:\Windows\SysWOW64\bnrndwmv.exe
      bnrndwmv.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:2808
    • C:\Windows\SysWOW64\gsrpjbjlmeoal.exe
      gsrpjbjlmeoal.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2736
    • 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:3044
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1644
    • 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:2916

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            512KB

            MD5

            c5b975488c14e10f0f93f41ef543a41b

            SHA1

            1e3e5c5d69f2f95c9a275374b098308c5172e4e1

            SHA256

            95a0865cf539228afc0f23f854b8b47265648af810ffb0ad1144e70f8a1e864e

            SHA512

            5b1639e3aa561ecd9fc005f00ab547f4a808b96516361f23f700b324b4ef197da09422b379e26db6d06ec8bde017089ad3c04d92f45a3a21ac011e9efa6fc75b

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

            Filesize

            512KB

            MD5

            127c49c0d6341ba4c28db438a9418464

            SHA1

            0576206c0109149331fa79923af9574b564ab8e4

            SHA256

            3e14736828bc10c0007d7d1e60c5075b3c2d26dda7336a4f5e441125634263b5

            SHA512

            6bdcfe19ca096439808566e7b15619031f81657485078e39144714db2258db117e8f5106747e637e2782045f07fc88734601475638bc4a244798c7dad65e72c4

          • C:\Program Files\PublishRevoke.doc.exe

            Filesize

            512KB

            MD5

            510f341b1d95369ab07778bcdc03747f

            SHA1

            96329d5de60b383a9b4121e05a559050e5b36ef3

            SHA256

            a4b6eae1caff6a68901d658790738a2654027c982ff1a7273a38f7e30fc08bdf

            SHA512

            15cfd9aa3f0ae7a10c8f4c529b0610e7a098c55451ee64f4db4e6f5a4f1f5f7c0bf431aeb8c6761152ba0bc58588b2969845cb641d30b4ed5eab092abb365bf6

          • C:\Windows\SysWOW64\bnrndwmv.exe

            Filesize

            512KB

            MD5

            ce96e83ddbc643a5922bcba051d50b2f

            SHA1

            04e9fd083ec6f1868deab64bee37d0845e483419

            SHA256

            29fb7e1588e0c20b745ae80208edabc2f4b418f0b39a9d4163aefa9ad9f143d9

            SHA512

            49e762024ebc2550a5ad583d4d725b1c473f00532f5362f36f0e080ec3aced0ff3d3eaf8e20474a9601ca0257f3ad463dc30bce3aa31ecc66cb6824e3e868dd1

          • C:\Windows\SysWOW64\gsrpjbjlmeoal.exe

            Filesize

            512KB

            MD5

            4630bf4dbf99377e79918cee32a3c659

            SHA1

            d51f259788f003f325c079865e10e77871bcd465

            SHA256

            0f29fbe810c44ca3646b2979d50d135bb4351c79d264bae6512aa8b7f8198f5a

            SHA512

            b3e9c6ab56d6575492d5542272537ca3aa0c941b774210ad38e6ffbaa7df28f584fe5a2fefec2d5e0602bef56893a54e4f1a105c1f2f67599a19c35e5976cb47

          • C:\Windows\SysWOW64\wjcyqyysmurgtuz.exe

            Filesize

            512KB

            MD5

            d1d580eb3eca64769538e170f034a4dc

            SHA1

            0b99088c88364833b2e492abe5ab0e854a329df8

            SHA256

            1a1046eab15ba8a58e7abb6017145a87e27e6bbf17889d3dddecaf52975a719b

            SHA512

            2316d89cdc5e435603cad0bcc49fa5591fe4a2fe259a95630be37a44d6fa555a829bd4144a767e936abec51d7bf04d6fb307c98c9ff34e3829d0f19985e41853

          • C:\Windows\mydoc.rtf

            Filesize

            223B

            MD5

            06604e5941c126e2e7be02c5cd9f62ec

            SHA1

            4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

            SHA256

            85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

            SHA512

            803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

          • \Windows\SysWOW64\zvvrsraxcl.exe

            Filesize

            512KB

            MD5

            8cd1af42ae052582502911fd36fe80bc

            SHA1

            69a2ffaccf8836cf05fd25d368dd33bff5c3f106

            SHA256

            1f9fca700b8cebdaab6877491e8b2a00e25b0f0775fadf89a3579d345f341577

            SHA512

            8a9368f71cf2a0eea27693abcf61baa27557118130950b8850102a2930513f5b2fb5deb65da14537dfd4b0557b7e6376509c3d386072c4689f19aca49d293aa0

          • memory/2452-0-0x0000000000400000-0x0000000000496000-memory.dmp

            Filesize

            600KB

          • memory/2916-84-0x00000000040B0000-0x00000000040B1000-memory.dmp

            Filesize

            4KB

          • memory/2916-91-0x00000000040B0000-0x00000000040B1000-memory.dmp

            Filesize

            4KB

          • memory/2916-96-0x0000000002680000-0x0000000002690000-memory.dmp

            Filesize

            64KB

          • memory/3044-47-0x00000000715BD000-0x00000000715C8000-memory.dmp

            Filesize

            44KB

          • memory/3044-46-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/3044-45-0x000000002F4A1000-0x000000002F4A2000-memory.dmp

            Filesize

            4KB

          • memory/3044-89-0x00000000715BD000-0x00000000715C8000-memory.dmp

            Filesize

            44KB