Analysis

  • max time kernel
    151s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/01/2024, 22:09

General

  • Target

    474989eaebe85c9c6001dacc38b4dfbd.exe

  • Size

    2.0MB

  • MD5

    474989eaebe85c9c6001dacc38b4dfbd

  • SHA1

    6efd741dd1c9732459db974c92c9b586f9a33b4d

  • SHA256

    7bfe0a6ad74dbff91ee347bf8fb9d565dbe83f46edefeacc1af1c68b37a1aea7

  • SHA512

    39c55d6257f9b006279bcf493826fd7bc5acedc0072ea7a7c20595d4974fcd3d23560d355c05f4acfb8814198e5a575f59a273ba1697958b9c10fa46cb831ba3

  • SSDEEP

    3072:2pZp75DchnX/eJuaBD1YOEe5hyZx3R6KZjwA/pWpliQCIntmjOkh5:2vp75c/ecaDIECkmWplcIntmjOkh

Malware Config

Signatures

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Modifies Installed Components in the registry 2 TTPs 8 IoCs
  • Executes dropped EXE 9 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 14 IoCs
  • Program crash 1 IoCs
  • Modifies registry class 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs
  • Views/modifies file attributes 1 TTPs 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\474989eaebe85c9c6001dacc38b4dfbd.exe
    "C:\Users\Admin\AppData\Local\Temp\474989eaebe85c9c6001dacc38b4dfbd.exe"
    1⤵
    • Adds policy Run key to start application
    • Modifies Installed Components in the registry
    • Adds Run key to start application
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3336
    • C:\Users\Admin\AppData\Local\Temp\monudflsa.exe
      "C:\Users\Admin\AppData\Local\Temp\monudflsa.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3824
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\4675.tmp.cmd "C:\Users\Admin\AppData\Local\Temp\MONUDF~1.EXE""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1968
        • C:\Users\Admin\AppData\Local\Temp\smss.exe
          "C:\Users\Admin\AppData\Local\Temp\smss.exe" 127.1 -n 5
          4⤵
          • Executes dropped EXE
          PID:5072
        • C:\Windows\SysWOW64\attrib.exe
          attrib -s -h "C:\Users\Admin\AppData\Local\Temp\MONUDF~1.EXE"
          4⤵
          • Views/modifies file attributes
          PID:1160
        • C:\Users\Admin\AppData\Local\Temp\smss.exe
          "C:\Users\Admin\AppData\Local\Temp\smss.exe" 127.1 -n 5
          4⤵
          • Executes dropped EXE
          PID:2748
        • C:\Windows\SysWOW64\attrib.exe
          attrib -s -h "C:\Users\Admin\AppData\Local\Temp\MONUDF~1.EXE"
          4⤵
          • Views/modifies file attributes
          PID:2860
        • C:\Users\Admin\AppData\Local\Temp\smss.exe
          "C:\Users\Admin\AppData\Local\Temp\smss.exe" 127.1 -n 5
          4⤵
          • Executes dropped EXE
          PID:2216
        • C:\Windows\SysWOW64\attrib.exe
          attrib -s -h "C:\Users\Admin\AppData\Local\Temp\MONUDF~1.EXE"
          4⤵
          • Views/modifies file attributes
          PID:4928
        • C:\Users\Admin\AppData\Local\Temp\smss.exe
          "C:\Users\Admin\AppData\Local\Temp\smss.exe" 127.1 -n 5
          4⤵
          • Executes dropped EXE
          PID:3768
        • C:\Windows\SysWOW64\attrib.exe
          attrib -s -h "C:\Users\Admin\AppData\Local\Temp\MONUDF~1.EXE"
          4⤵
          • Views/modifies file attributes
          PID:1664
        • C:\Users\Admin\AppData\Local\Temp\smss.exe
          "C:\Users\Admin\AppData\Local\Temp\smss.exe" 127.1 -n 5
          4⤵
          • Executes dropped EXE
          PID:2508
        • C:\Windows\SysWOW64\attrib.exe
          attrib -s -h "C:\Users\Admin\AppData\Local\Temp\MONUDF~1.EXE"
          4⤵
          • Views/modifies file attributes
          PID:4652
        • C:\Users\Admin\AppData\Local\Temp\smss.exe
          "C:\Users\Admin\AppData\Local\Temp\smss.exe" 127.1 -n 5
          4⤵
          • Executes dropped EXE
          PID:4832
        • C:\Windows\SysWOW64\attrib.exe
          attrib -s -h "C:\Users\Admin\AppData\Local\Temp\MONUDF~1.EXE"
          4⤵
          • Views/modifies file attributes
          PID:2996
        • C:\Users\Admin\AppData\Local\Temp\smss.exe
          "C:\Users\Admin\AppData\Local\Temp\smss.exe" 127.1 -n 5
          4⤵
          • Executes dropped EXE
          PID:4268
        • C:\Windows\SysWOW64\attrib.exe
          attrib -s -h "C:\Users\Admin\AppData\Local\Temp\MONUDF~1.EXE"
          4⤵
          • Views/modifies file attributes
          PID:3208
        • C:\Users\Admin\AppData\Local\Temp\smss.exe
          "C:\Users\Admin\AppData\Local\Temp\smss.exe" 127.1 -n 5
          4⤵
          • Executes dropped EXE
          PID:2348
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 532
        3⤵
        • Program crash
        PID:624
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3824 -ip 3824
    1⤵
      PID:3628

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\4675.tmp.cmd

            Filesize

            168B

            MD5

            e7efc2c945a798b4dab3fe50f1524592

            SHA1

            0bb937ccd89e40c91c0e58b376873ef909fe805b

            SHA256

            624acac79fdcfe30592f5321b4ab73d360f393dbcdbe8daa50fcce63c710f5dc

            SHA512

            e75840979404587aa15fd4d1e46707c33e32dca086ca72c7666045e14191e29857d06dc8ba737e69925c71b2e2d6a5ee3b63c36ecd2f32ae515f85a985d8f257

          • C:\Users\Admin\AppData\Local\Temp\advsec32.dll

            Filesize

            4KB

            MD5

            3adea70969f52d365c119b3d25619de9

            SHA1

            d303a6ddd63ce993a8432f4daab5132732748843

            SHA256

            c9f5a19c7b11fd866483adc93aa5bc4bd3515bd995ca79297b227e3e5ef1a665

            SHA512

            c4d836fcbdab4c859a6fc0f849d1e41e98c7e23fc0fe0fe0a09cb68e9a57d60b2ae9ad46762d7a5e05db28d6179bd431ef179ee1f9ff016db74cc3b1d74ed7f8

          • C:\Users\Admin\AppData\Local\Temp\monudflsa.exe

            Filesize

            88KB

            MD5

            2bd46a980dde8eaa13e3defffb87e1e0

            SHA1

            926046f0c727358d1a6fbdd6ff3e28bc67d5e2f6

            SHA256

            f6af08e31471c98adcc26f9916e26d41aa0c47ff94949d3174d55c320032be26

            SHA512

            45dcd587a63c6c01077d1afe27af8942b4944a11247dafe4df48150f808dd46df032d2dbf3fd9ace39d656671a7db52d8a5a9d14c2aa64ec5d6caee5a1d6d04b

          • C:\Users\Admin\AppData\Local\Temp\smss.exe

            Filesize

            18KB

            MD5

            b3624dd758ccecf93a1226cef252ca12

            SHA1

            fcf4dad8c4ad101504b1bf47cbbddbac36b558a7

            SHA256

            4aaa74f294c15aeb37ada8185d0dead58bd87276a01a814abc0c4b40545bf2ef

            SHA512

            c613d18511b00fa25fc7b1bdde10d96debb42a99b5aaab9e9826538d0e229085bb371f0197f6b1086c4f9c605f01e71287ffc5442f701a95d67c232a5f031838

          • C:\Windows\SysWOW64\iduiudf.exe

            Filesize

            2.0MB

            MD5

            474989eaebe85c9c6001dacc38b4dfbd

            SHA1

            6efd741dd1c9732459db974c92c9b586f9a33b4d

            SHA256

            7bfe0a6ad74dbff91ee347bf8fb9d565dbe83f46edefeacc1af1c68b37a1aea7

            SHA512

            39c55d6257f9b006279bcf493826fd7bc5acedc0072ea7a7c20595d4974fcd3d23560d355c05f4acfb8814198e5a575f59a273ba1697958b9c10fa46cb831ba3

          • memory/3336-24-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/3336-32-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/3336-38-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/3336-40-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/3336-43-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/3336-0-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/3336-23-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/3824-35-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB

          • memory/3824-37-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB

          • memory/3824-41-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB

          • memory/3824-57-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB

          • memory/3824-63-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB

          • memory/3824-69-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB