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Analysis

  • max time kernel
    150s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 23:45

General

  • Target

    4424164cf11c9061ee426566ba7514b2.exe

  • Size

    512KB

  • MD5

    4424164cf11c9061ee426566ba7514b2

  • SHA1

    0471816e3226d9cd03637d525b4d44737b5b5b10

  • SHA256

    4e918bc4131a67cca71f8a2f871353bf356515ab18e62386e6d009e3fc0374ba

  • SHA512

    f5911ef066618ba3ac6aa3bc026d2d5de09add81a48251f768ccb73d430486d320f33d9bdc3e58035651f63a257c22d9e3845ec20ea730ec3f8f49ca84cb6609

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6L:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm52

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 7 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 34 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\4424164cf11c9061ee426566ba7514b2.exe
    "C:\Users\Admin\AppData\Local\Temp\4424164cf11c9061ee426566ba7514b2.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:1208
    • C:\Windows\SysWOW64\kcgmkdyrkc.exe
      kcgmkdyrkc.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:2924
      • C:\Windows\SysWOW64\rqffyaxo.exe
        C:\Windows\system32\rqffyaxo.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        PID:2588
    • C:\Windows\SysWOW64\urjstyhandyslwq.exe
      urjstyhandyslwq.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2736
    • C:\Windows\SysWOW64\vswgudmlzgliy.exe
      vswgudmlzgliy.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3020
    • C:\Windows\SysWOW64\rqffyaxo.exe
      rqffyaxo.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:2912
    • 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:2664
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1620
    • 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:1948

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      512KB

      MD5

      bc520603f305409909f1caf19a79df5c

      SHA1

      ee343db680c08d0456b35655739e9fe8ad941785

      SHA256

      5f201bf705019dfd35803d692602a15e402bab39a9520560b17c1ee2bb355a6f

      SHA512

      97e520a30559ee86b9d2bd52ecfac2997abeaecbafd326e5adb2ff12d945a3c3554285dc607e9c39c34ee4719a281c0a540c0526e23ae5d08116718e002a1ca5

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

      Filesize

      512KB

      MD5

      9bad87a54bfec4b1318aecdff9278ce0

      SHA1

      7a95c3b1b1dec2ade4d58b4b17c8c046ef0f1299

      SHA256

      7533aca06e3730721361288684237e24442fda843d668961f13ee1390aaaa033

      SHA512

      50e6ac97292e3e6b7d1ab0a47c167237fdc6dacea9fa941caf07b661599dec8fa66a2e057f2acafd4adc7ce416aa1eb8f8c97e7131ccdded7bfdbdda5a3bf9ba

    • C:\Windows\SysWOW64\rqffyaxo.exe

      Filesize

      512KB

      MD5

      f67b20942dda990b1b10b3a47b1860ee

      SHA1

      0d6b1a45d8898fe517709176475494126faa1055

      SHA256

      be2bca40b553bafcd4fa1b6dc295668962d72ffda309734caea3b06cc2d351c0

      SHA512

      5e0d95149264c8b680f2a2e72d12c59efcae87075989dc427f11081c46b94c17cd532e0e7fd073a8cb3c546c18afbab637ef7013810e49abdd17c4feaed438c7

    • C:\Windows\SysWOW64\vswgudmlzgliy.exe

      Filesize

      512KB

      MD5

      4a3cf29070afbc03b0a7c59ea4ad41dc

      SHA1

      00b8e9afbc9b010c362796b5796618f913efc8be

      SHA256

      b563785a2574ac03fc0657f0381dcd901e131d0cf94e49eb355d80764abe16c4

      SHA512

      adbc43d65f3c29f1ecf09fc2d935a5c25af5eee2899536ab371f54952e04f533854875e195cf8290643652ba4c6e8075172aee1ae3d3052626ac41d5e62fef9e

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\kcgmkdyrkc.exe

      Filesize

      512KB

      MD5

      40670fe8096df3089de30af43acb1a05

      SHA1

      5f5c6d9de6730db528201249b5f3c9aa435b801d

      SHA256

      72c6ae98feed049451a0c10119666516af9689cc653814693f9caf8907881a15

      SHA512

      cbde6a64df55d161318a5aa5c4c2d49b9628af5e8838c94c8f03a3498a119fefca16ece3815106a15a9e8620ba4dd6bb60d90428be1140e80e687a428648e68a

    • \Windows\SysWOW64\urjstyhandyslwq.exe

      Filesize

      512KB

      MD5

      9d5c59127a06e38cdbeb5e411a1b9b3f

      SHA1

      5c388877e843ea0a69214294c458d4639e61f055

      SHA256

      81ef948476cba526ea82f9acddd5d97324c03f6089484c10dbcb1e412b4e7612

      SHA512

      cafee508bf697bb756b6c7bc58ce491f0691d9f33f7e97e7e6139fbbec15821afb5355b7c74307eac875ed4bc230c7d44b16be07b32a647e0ab989b43391e931

    • memory/1208-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

    • memory/1948-82-0x0000000003ED0000-0x0000000003ED1000-memory.dmp

      Filesize

      4KB

    • memory/1948-85-0x0000000003ED0000-0x0000000003ED1000-memory.dmp

      Filesize

      4KB

    • memory/2664-45-0x000000002F511000-0x000000002F512000-memory.dmp

      Filesize

      4KB

    • memory/2664-52-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2664-53-0x0000000071A2D000-0x0000000071A38000-memory.dmp

      Filesize

      44KB

    • memory/2664-83-0x0000000071A2D000-0x0000000071A38000-memory.dmp

      Filesize

      44KB