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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/05/2024, 12:20

General

  • Target

    a7bef4732debeac586785dab42b9dd70_NEIKI.exe

  • Size

    1.2MB

  • MD5

    a7bef4732debeac586785dab42b9dd70

  • SHA1

    68241697800ba9585386bc22544a2493e988dc71

  • SHA256

    88ef926661943a513da9db1b87a846ac5abb684bb4cd1627ca73be21ba5c7c86

  • SHA512

    fa822cac54a4a1240db575917689b6dbf8cf51129a072e916eccc38859be422ef8b3d8855fe4f976ec6d0abdb01ba8cfb02446114218a86f33a79b436ba6891a

  • SSDEEP

    12288:BgwuX+Zw9S0/Z3SfJKW96B/m4OvdiPGaPueEjzVqj83cBBS1UihZk5TzHO81HkwE:Ouq4ugJKpWdicLsBBS1UiuTr1HT4B

Malware Config

Signatures

  • Renames multiple (219) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Drivers directory 2 IoCs
  • Executes dropped EXE 2 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 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3692
      • C:\Users\Admin\AppData\Local\Temp\a7bef4732debeac586785dab42b9dd70_NEIKI.exe
        "C:\Users\Admin\AppData\Local\Temp\a7bef4732debeac586785dab42b9dd70_NEIKI.exe"
        2⤵
        • Drops file in Drivers directory
        • Adds Run key to start application
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4648
        • C:\Windows\SysWOW64\net.exe
          net stop "Kingsoft AntiVirus Service"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4116
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
            4⤵
              PID:1348
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a48FF.bat
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2964
            • C:\Users\Admin\AppData\Local\Temp\a7bef4732debeac586785dab42b9dd70_NEIKI.exe
              "C:\Users\Admin\AppData\Local\Temp\a7bef4732debeac586785dab42b9dd70_NEIKI.exe"
              4⤵
              • Executes dropped EXE
              PID:3900
          • C:\Windows\Logo1_.exe
            C:\Windows\Logo1_.exe
            3⤵
            • Drops file in Drivers directory
            • Executes dropped EXE
            • Adds Run key to start application
            • Enumerates connected drives
            • Drops file in Program Files directory
            • Drops file in Windows directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:4832
            • C:\Windows\SysWOW64\net.exe
              net stop "Kingsoft AntiVirus Service"
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:3700
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
                5⤵
                  PID:4744
              • C:\Windows\SysWOW64\net.exe
                net stop "Kingsoft AntiVirus Service"
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:3860
                • C:\Windows\SysWOW64\net1.exe
                  C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
                  5⤵
                    PID:3804

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\$$a48FF.bat

            Filesize

            566B

            MD5

            2c81c8610a8c0888fad34d8e0373faf6

            SHA1

            c6ff6be0441061d60d970133f04cd681ada0282b

            SHA256

            d48f894735ee1050aff1a952f71b2a8f36c67c07bfb626c8dc018539ba24ad28

            SHA512

            0a71acb6419cb5dd390736fe2150b7bc777b5de5c64d5d702fee30627fb1d95c5befbcf55e1c2c332c37c6923a50f99ef831c44975d6087e22e54e32735d7431

          • C:\Users\Admin\AppData\Local\Temp\a7bef4732debeac586785dab42b9dd70_NEIKI.exe.exe

            Filesize

            1.2MB

            MD5

            a666608317f9e070e673979284b2f7dc

            SHA1

            a6f3c4d5193aa52bfb039f481d25522bfd3280c4

            SHA256

            ec98606a8f1d555b6a96fd49b59bfa9995066935cad2512dfec9a8f5b42caa01

            SHA512

            59d161faee116ede83e61eda1d23060a07c10a4cf9cd2a3155bb27f5000c74c03c8b65211bb44cb331d92ca3e1bab460bb6ca8891eb3d51ce244c5e8e154b80a

          • C:\Windows\Logo1_.exe

            Filesize

            59KB

            MD5

            30e8aef12c7bc366048a967e0ceb7809

            SHA1

            886846ea1b7b298c79c5397a07d40c3effcc5f81

            SHA256

            437cab11e7ad63efbecc5af5f1f0e73a7c0bf20b44a0b5905993a769f95df6cd

            SHA512

            59c30592acadc4b5e11e5015ac1a98496acbd097856bc40a91a9b63fe783d82dbe92354ac1aab4132b1af875032411bdbb21df7ec2648dbc7b9037e2a70c9e0e

          • C:\Windows\system32\drivers\etc\hosts

            Filesize

            842B

            MD5

            6f4adf207ef402d9ef40c6aa52ffd245

            SHA1

            4b05b495619c643f02e278dede8f5b1392555a57

            SHA256

            d9704dab05e988be3e5e7b7c020bb9814906d11bb9c31ad80d4ed1316f6bc94e

            SHA512

            a6306bd200a26ea78192ae5b00cc49cfab3fba025fe7233709a4e62db0f9ed60030dce22b34afe57aad86a098c9a8c44e080cedc43227cb87ef4690baec35b47

          • memory/4648-1-0x0000000000510000-0x0000000000550000-memory.dmp

            Filesize

            256KB

          • memory/4648-0-0x0000000000400000-0x000000000043E000-memory.dmp

            Filesize

            248KB

          • memory/4648-11-0x0000000000400000-0x000000000043E000-memory.dmp

            Filesize

            248KB

          • memory/4832-13-0x0000000000400000-0x000000000043E000-memory.dmp

            Filesize

            248KB

          • memory/4832-12-0x0000000000510000-0x0000000000530000-memory.dmp

            Filesize

            128KB

          • memory/4832-21-0x0000000000400000-0x000000000043E000-memory.dmp

            Filesize

            248KB