Analysis

  • max time kernel
    94s
  • max time network
    96s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    10-06-2022 15:37

General

  • Target

    5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe

  • Size

    47KB

  • MD5

    0d225faf96ee8d83cb69fbfcceba98bc

  • SHA1

    a7b3c081b405cccfd55b8e64a6922fbc69bd733c

  • SHA256

    5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54

  • SHA512

    dbc0501e031e711a756519dd4dbe83fc18ecc2f25fed205ef5d9fdc7b9e54e5dd6995250bcfa494e26e8f12a497842987af490f82d787033931306aec07edfd9

Malware Config

Extracted

Family

netdooka

C2

http://93.115.21.45/gtaddress

Signatures

  • NetDooka

    NetDooka is a malware framework distributed by way of a pay-per-install and written in C#.

  • Creates new service(s) 1 TTPs
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Checks for any installed AV software in registry 1 TTPs 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Launches sc.exe 2 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies data under HKEY_USERS 43 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe
    "C:\Users\Admin\AppData\Local\Temp\5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe"
    1⤵
    • Checks for any installed AV software in registry
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:684
    • C:\Windows\System32\PING.EXE
      "C:\Windows\System32\PING.EXE" 22.61.56.108 -n 4
      2⤵
      • Runs ping.exe
      PID:1476
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe" "C:\Program Files\ExMultimediaStorage\min_id_resolver.exe"
      2⤵
      • Drops file in Program Files directory
      PID:544
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" create SecureElementDataSrv binpath= "C:\Program Files\ExMultimediaStorage\min_id_resolver.exe delected"
      2⤵
      • Launches sc.exe
      PID:1504
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" start SecureElementDataSrv
      2⤵
      • Launches sc.exe
      PID:1428
    • C:\Users\Admin\AppData\Local\Temp\5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe
      "C:\Users\Admin\AppData\Local\Temp\5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe" emulate -v -sh
      2⤵
      • Drops file in Drivers directory
      • Suspicious use of WriteProcessMemory
      PID:740
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C "C:\Program Files\ExMultimediaStorage\reloadbitex.exe"
        3⤵
          PID:1140
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /C ping 8.8.8.8 -n 6 -w 3100 > Nul & echo 0 > "C:\Users\Admin\AppData\Local\Temp\5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe" & for /L %n in (1,1,2048) do @echo jovyhjjfujfijifjifjifujfijfijfdufdjojfduhfdfijddfjdufjdfdjifdjii >> "C:\Users\Admin\AppData\Local\Temp\5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe" & del /f /q "C:\Users\Admin\AppData\Local\Temp\5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54.exe"
          3⤵
          • Deletes itself
          • Suspicious use of WriteProcessMemory
          PID:280
          • C:\Windows\system32\PING.EXE
            ping 8.8.8.8 -n 6 -w 3100
            4⤵
            • Runs ping.exe
            PID:1792
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /XML "C:\Program Files\ExMultimediaStorage\conf.xml" /tn ErmodeInstller
        2⤵
        • Creates scheduled task(s)
        PID:628
    • C:\Program Files\ExMultimediaStorage\min_id_resolver.exe
      "C:\Program Files\ExMultimediaStorage\min_id_resolver.exe" delected
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Modifies data under HKEY_USERS
      PID:1596

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Program Files\ExMultimediaStorage\conf.xml

      Filesize

      897B

      MD5

      0c042624521cffa752cc34d2d54645cf

      SHA1

      bc9f1cc6133220f21ba721dde3ed2b92f383d787

      SHA256

      87df8072d9c8ba7c695aed98cea3cf4a0f359a514f9c30419fd0eaa53538a0b1

      SHA512

      3333e9de599b14d09c08975ec83c6ac3d7793437f4fed865d2bd91f01cd7042b247a997d91a0b7ee573273dcdf4ade2570c26e5e0a7fc2aa116ae4ffe8813bc5

    • C:\Program Files\ExMultimediaStorage\min_id_resolver.exe

      Filesize

      47KB

      MD5

      0d225faf96ee8d83cb69fbfcceba98bc

      SHA1

      a7b3c081b405cccfd55b8e64a6922fbc69bd733c

      SHA256

      5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54

      SHA512

      dbc0501e031e711a756519dd4dbe83fc18ecc2f25fed205ef5d9fdc7b9e54e5dd6995250bcfa494e26e8f12a497842987af490f82d787033931306aec07edfd9

    • C:\Program Files\ExMultimediaStorage\min_id_resolver.exe

      Filesize

      47KB

      MD5

      0d225faf96ee8d83cb69fbfcceba98bc

      SHA1

      a7b3c081b405cccfd55b8e64a6922fbc69bd733c

      SHA256

      5c14a72a6b73b422cafc2596c13897937013fd335eca4299e63d01adee727d54

      SHA512

      dbc0501e031e711a756519dd4dbe83fc18ecc2f25fed205ef5d9fdc7b9e54e5dd6995250bcfa494e26e8f12a497842987af490f82d787033931306aec07edfd9

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\26E638C519997CC5D7E38BA592ADCFA9

      Filesize

      524B

      MD5

      c9278e2a24ebada268cbc73701dc4672

      SHA1

      e8194ee0a5f71ccef82c8260fb845d403acfc9a4

      SHA256

      8b6881045e2f3887168c90126e1c0d9ab14b6b694c71f41e38b347349d57d37b

      SHA512

      7baf226f1fa0b019808475d6e4867b365751379e66f2145ca1b3c592b2017e6e82c1f5a88932d00990b8f4dbf3784ff8950646eada3662161929a7d306a723eb

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\26E638C519997CC5D7E38BA592ADCFA9

      Filesize

      280B

      MD5

      91d36c28908e4261b1ec0797ca92ab00

      SHA1

      6b065f328f32b7bf48a41cb158c84cbb66301635

      SHA256

      149f1028dc8edc6e9b89818a7cf0f73937ce5814d69c59bbc0d62cb2dac9745a

      SHA512

      ece405c4a7a7cbf7a5fda8169819caf4972c0de17805f5d2e74ce940dbaed00ac0b51db90e802af7c324ac4625b83693f1f9b3e7ba115f16e42800772571588b

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

      Filesize

      344B

      MD5

      455e51e2e8051a63e213b711c12df27c

      SHA1

      cabc89781a8dc1bd6c1c23389b066060c678f2d4

      SHA256

      d334471c0f0ee5288c4ddb63c042493c37504aecad49fa40f449557a9bf8c460

      SHA512

      b3fe532008648600bc407bddd0a06faceb2c289cd473e2e6b3c6f0fd2f2ea87c40422f3a096b1e6a45cd22972fc6e571916f0f71ada4c500cd85031685855d69

    • memory/280-72-0x0000000000000000-mapping.dmp

    • memory/544-57-0x0000000000000000-mapping.dmp

    • memory/628-64-0x0000000000000000-mapping.dmp

    • memory/684-54-0x000007FEF3720000-0x000007FEF4143000-memory.dmp

      Filesize

      10.1MB

    • memory/684-55-0x000007FEFBAA1000-0x000007FEFBAA3000-memory.dmp

      Filesize

      8KB

    • memory/740-63-0x0000000000000000-mapping.dmp

    • memory/740-69-0x000007FEF3720000-0x000007FEF4143000-memory.dmp

      Filesize

      10.1MB

    • memory/1140-71-0x0000000000000000-mapping.dmp

    • memory/1428-59-0x0000000000000000-mapping.dmp

    • memory/1476-56-0x0000000000000000-mapping.dmp

    • memory/1504-58-0x0000000000000000-mapping.dmp

    • memory/1596-62-0x000007FEF3720000-0x000007FEF4143000-memory.dmp

      Filesize

      10.1MB

    • memory/1792-73-0x0000000000000000-mapping.dmp