Analysis

  • max time kernel
    45s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:29

General

  • Target

    31f12d93559711ddefdd3af4bc8abdd78f8776b6e4cf2552f14c6b2a788f5f16.exe

  • Size

    601KB

  • MD5

    60a9fdeffc9839cc1ae403230a15babb

  • SHA1

    0fb94ebe037600db6218a6a7b37410d687f82521

  • SHA256

    31f12d93559711ddefdd3af4bc8abdd78f8776b6e4cf2552f14c6b2a788f5f16

  • SHA512

    839f87c362c6a1a0071cc56a830d85a93f4925d1f12f439ab543e4144980435ddb2aa0094321ca77c1072a1eb765a951d6ad6f3a0e7bcb65524e8c41991c2d73

  • SSDEEP

    12288:3Iny5DYTW6htKnm0O0hkV6yvDl5ytl2r0wldWTi8+Sm:fUTW80u0U5yXNwLW+VSm

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 13 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\31f12d93559711ddefdd3af4bc8abdd78f8776b6e4cf2552f14c6b2a788f5f16.exe
    "C:\Users\Admin\AppData\Local\Temp\31f12d93559711ddefdd3af4bc8abdd78f8776b6e4cf2552f14c6b2a788f5f16.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1120
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:460
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1756
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2012
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:304
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:996
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1156
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1768
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1480
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:268
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1648
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:952
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1652

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            282e18b0e6d829ad2955b0efb1c0758f

            SHA1

            100508bbcc60b09c37fa76bddc1d93e661c4e76d

            SHA256

            a4114ec8da1f86e551a9d715fec0aa0f34863e7d82deabaa218a8b1df30c7f3f

            SHA512

            7f9e2366040c7f7253d0f960c57b0d88f559ed8e47d72d2402d6010216ec74de30c1aaf5e8d16309239e24f46c8e619f4767e3fc9cb2b9cca47650125226cfbc

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            59a7cfa214c508814c57e14fff3b14d1

            SHA1

            3023a5b1d6d2893bbf9f0c20e4fc347d082a22ee

            SHA256

            6ebc2d49f224bc0b45307c0507c6b6a667f1b994802fe126e2ca9668ffc544e6

            SHA512

            a75d483a8b344002943310204961d40ecd2639665a6fcf1731b0f43f7b8da38ac3b0037c2b7e5cb9904e3b5efcb20f21d9d10f5955185d68640475393f3af6e5

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            661720ba22f6a30312c26a8ed31812d2

            SHA1

            7b42e311ae530fde64131d2ce12e285a900aadb6

            SHA256

            5defbb97d66cdfc9298a32f8f256d4e69ed7654808ffc529a1ed17f0b5d27867

            SHA512

            13bf51be40bf58aeedc2064f7556d36c253de8a9b78cf12db2eac76c002fffe2e41cc94c531d3acee7bdc98f7951aa2bd628db2a206521370cecced29e04df9f

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ca8f52a8344a228be3b09ea8e6b71b53

            SHA1

            040a5672a52bb5204898c4416730f52596686119

            SHA256

            8007943001f5d81b6948d0f97931a7e46ff988c344c2c2048ee308f1caa9bddb

            SHA512

            552c9e8eae37c774807e3538a6c3a2ea7b3b97e6be12c734c4e12e00e89015cc8eb71bde5992232347326689bb051436f8578b610f00501547ceff0afe76ce11

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ca8f52a8344a228be3b09ea8e6b71b53

            SHA1

            040a5672a52bb5204898c4416730f52596686119

            SHA256

            8007943001f5d81b6948d0f97931a7e46ff988c344c2c2048ee308f1caa9bddb

            SHA512

            552c9e8eae37c774807e3538a6c3a2ea7b3b97e6be12c734c4e12e00e89015cc8eb71bde5992232347326689bb051436f8578b610f00501547ceff0afe76ce11

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            39f9974eeea05ba044d587cf7598e4f4

            SHA1

            6743e9f11b7be007f8e306e72a4ae40c1cc1a13f

            SHA256

            2c85d7b2d3a6c438b191b91d183982fe635d8b37f4e4b11275c856f0b866c706

            SHA512

            37dc8b0720e4e62eda82837e60edef12881690826fffce3f7a9021eee29d1cfbe48c8b18b39622e62dd7887e8d30195cb1b9dc44fb68f21f726cd600eb45b82a

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            39f9974eeea05ba044d587cf7598e4f4

            SHA1

            6743e9f11b7be007f8e306e72a4ae40c1cc1a13f

            SHA256

            2c85d7b2d3a6c438b191b91d183982fe635d8b37f4e4b11275c856f0b866c706

            SHA512

            37dc8b0720e4e62eda82837e60edef12881690826fffce3f7a9021eee29d1cfbe48c8b18b39622e62dd7887e8d30195cb1b9dc44fb68f21f726cd600eb45b82a

          • \Users\Admin\AppData\Local\Temp\nsd5DD.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd5DD.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd5DD.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd5DD.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd5DD.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            282e18b0e6d829ad2955b0efb1c0758f

            SHA1

            100508bbcc60b09c37fa76bddc1d93e661c4e76d

            SHA256

            a4114ec8da1f86e551a9d715fec0aa0f34863e7d82deabaa218a8b1df30c7f3f

            SHA512

            7f9e2366040c7f7253d0f960c57b0d88f559ed8e47d72d2402d6010216ec74de30c1aaf5e8d16309239e24f46c8e619f4767e3fc9cb2b9cca47650125226cfbc

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            282e18b0e6d829ad2955b0efb1c0758f

            SHA1

            100508bbcc60b09c37fa76bddc1d93e661c4e76d

            SHA256

            a4114ec8da1f86e551a9d715fec0aa0f34863e7d82deabaa218a8b1df30c7f3f

            SHA512

            7f9e2366040c7f7253d0f960c57b0d88f559ed8e47d72d2402d6010216ec74de30c1aaf5e8d16309239e24f46c8e619f4767e3fc9cb2b9cca47650125226cfbc

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            282e18b0e6d829ad2955b0efb1c0758f

            SHA1

            100508bbcc60b09c37fa76bddc1d93e661c4e76d

            SHA256

            a4114ec8da1f86e551a9d715fec0aa0f34863e7d82deabaa218a8b1df30c7f3f

            SHA512

            7f9e2366040c7f7253d0f960c57b0d88f559ed8e47d72d2402d6010216ec74de30c1aaf5e8d16309239e24f46c8e619f4767e3fc9cb2b9cca47650125226cfbc

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            59a7cfa214c508814c57e14fff3b14d1

            SHA1

            3023a5b1d6d2893bbf9f0c20e4fc347d082a22ee

            SHA256

            6ebc2d49f224bc0b45307c0507c6b6a667f1b994802fe126e2ca9668ffc544e6

            SHA512

            a75d483a8b344002943310204961d40ecd2639665a6fcf1731b0f43f7b8da38ac3b0037c2b7e5cb9904e3b5efcb20f21d9d10f5955185d68640475393f3af6e5

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            59a7cfa214c508814c57e14fff3b14d1

            SHA1

            3023a5b1d6d2893bbf9f0c20e4fc347d082a22ee

            SHA256

            6ebc2d49f224bc0b45307c0507c6b6a667f1b994802fe126e2ca9668ffc544e6

            SHA512

            a75d483a8b344002943310204961d40ecd2639665a6fcf1731b0f43f7b8da38ac3b0037c2b7e5cb9904e3b5efcb20f21d9d10f5955185d68640475393f3af6e5

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            661720ba22f6a30312c26a8ed31812d2

            SHA1

            7b42e311ae530fde64131d2ce12e285a900aadb6

            SHA256

            5defbb97d66cdfc9298a32f8f256d4e69ed7654808ffc529a1ed17f0b5d27867

            SHA512

            13bf51be40bf58aeedc2064f7556d36c253de8a9b78cf12db2eac76c002fffe2e41cc94c531d3acee7bdc98f7951aa2bd628db2a206521370cecced29e04df9f

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ca8f52a8344a228be3b09ea8e6b71b53

            SHA1

            040a5672a52bb5204898c4416730f52596686119

            SHA256

            8007943001f5d81b6948d0f97931a7e46ff988c344c2c2048ee308f1caa9bddb

            SHA512

            552c9e8eae37c774807e3538a6c3a2ea7b3b97e6be12c734c4e12e00e89015cc8eb71bde5992232347326689bb051436f8578b610f00501547ceff0afe76ce11

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            39f9974eeea05ba044d587cf7598e4f4

            SHA1

            6743e9f11b7be007f8e306e72a4ae40c1cc1a13f

            SHA256

            2c85d7b2d3a6c438b191b91d183982fe635d8b37f4e4b11275c856f0b866c706

            SHA512

            37dc8b0720e4e62eda82837e60edef12881690826fffce3f7a9021eee29d1cfbe48c8b18b39622e62dd7887e8d30195cb1b9dc44fb68f21f726cd600eb45b82a

          • memory/268-86-0x0000000000000000-mapping.dmp
          • memory/304-64-0x0000000000000000-mapping.dmp
          • memory/460-58-0x0000000000000000-mapping.dmp
          • memory/996-70-0x0000000000000000-mapping.dmp
          • memory/1120-57-0x0000000000000000-mapping.dmp
          • memory/1156-76-0x0000000000000000-mapping.dmp
          • memory/1480-81-0x0000000000000000-mapping.dmp
          • memory/1500-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1500-54-0x0000000075D71000-0x0000000075D73000-memory.dmp
            Filesize

            8KB

          • memory/1500-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1648-87-0x0000000000000000-mapping.dmp
          • memory/1756-60-0x0000000000000000-mapping.dmp
          • memory/1768-80-0x0000000000000000-mapping.dmp
          • memory/2012-61-0x0000000000000000-mapping.dmp