Analysis

  • max time kernel
    44s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:07

General

  • Target

    f77c5234c0b09f9a9fe25dc21e7646dcf157aec0dc90314ee4feb7f94a2b14d2.exe

  • Size

    603KB

  • MD5

    7636b1c2926aeb4e8b9051a9d8fc6f74

  • SHA1

    8146e1ac73fbd77a0f49781f0c300f35d132bf80

  • SHA256

    f77c5234c0b09f9a9fe25dc21e7646dcf157aec0dc90314ee4feb7f94a2b14d2

  • SHA512

    4fab4f476b13a4399f72753b8c5e917b770af162891bc6a40aa5271a62f060894b843abbda20cc7e632644975534b5c2c7f6f4930cdca44f94f525295b69c515

  • SSDEEP

    12288:UIny5DYTarhsfS7kB4IinCA6NLiAv8WikM1qXHruuK:SUTarmS7K4IiXQXkWiIL

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\f77c5234c0b09f9a9fe25dc21e7646dcf157aec0dc90314ee4feb7f94a2b14d2.exe
    "C:\Users\Admin\AppData\Local\Temp\f77c5234c0b09f9a9fe25dc21e7646dcf157aec0dc90314ee4feb7f94a2b14d2.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:1616
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1676
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:436
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1288
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1168
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:472
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1112
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1784
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:784
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1520
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2036
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1464
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1928
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1716

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            40df2d20ef4858b501830eb3f39fc344

            SHA1

            7f36a03ec96bd387d0f8cfceb6fccd5d7c612f96

            SHA256

            6ccbd4735f218956812e2bf323d7b99ced7d30cc09039a0cb9e81fb6a31af4a4

            SHA512

            809b6542e35d96bd05d244b3d7243bf63c1c45c9e6491bdb9823be21f4a35438478af53e027690b94696077a23b08a3513792e470009d59a10535dd74a701976

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ae00901862baeda4aada2265c30ee9d3

            SHA1

            e05a8f3cefffa87b4f35153938e40fa63d989f0a

            SHA256

            18a8a271384b2d0e4df8dd34fb516214fcc67e52bb0b5bce67f152db2d76eaae

            SHA512

            04fb672e23a66dd431d196cee431ad73c9148b6cef2dd80b8d9462163bc88ec572de095021b0ea84ed3b8ce3af16c4120942887f08175fd7a1130ae5fee203df

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            467fad993d9d8f91100c9d51f2605dca

            SHA1

            32c73431221374401348a25cf3ff80ec1421bc1c

            SHA256

            4505a297090bceeb8bf2ad4d6bc0bbc3e466d4830c4f43fbaa0b7c1e76b23dd8

            SHA512

            9a8ab034ee8f78bbe059923f08ab563ea842dd7bd67fbd459f84357003126d66e115669ea67c80500c2a9e3e0454fd2f4df38483fd1f8d869bc5f793223e3bf5

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1df083ee32318738d5f18908f1064c57

            SHA1

            206223a7d68633896b2582a128e842dd5dde2ccf

            SHA256

            2951b317ed65f6e4d732ee3314a83c60f9ffceca5e8acecc0afe654b98f3351a

            SHA512

            2f3e93cfa1d31874b941221b75348fc5c848f853824affaef5fd4192ec380214bdd62587610e820efbe75f7a655c169939482a7d58015e59c662fc172a5c810f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1df083ee32318738d5f18908f1064c57

            SHA1

            206223a7d68633896b2582a128e842dd5dde2ccf

            SHA256

            2951b317ed65f6e4d732ee3314a83c60f9ffceca5e8acecc0afe654b98f3351a

            SHA512

            2f3e93cfa1d31874b941221b75348fc5c848f853824affaef5fd4192ec380214bdd62587610e820efbe75f7a655c169939482a7d58015e59c662fc172a5c810f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            0a4c8fead88aef77823efa7812bf7e0c

            SHA1

            0a7b86b4915da2b3169dbba02f3a84355935d661

            SHA256

            9528ec536b89aeac1dfeca0c92c55c181c857722a9abf6d8d8c37930ac42a0b0

            SHA512

            bbfe8b4b95c25709bc292bfd33c0bb3df26a23f9a34e335f5a541d31346c36e170c3f150386333d30db0dd12c38ddfdaf40edd59ff28fd15ce994a455b984aa2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            0a4c8fead88aef77823efa7812bf7e0c

            SHA1

            0a7b86b4915da2b3169dbba02f3a84355935d661

            SHA256

            9528ec536b89aeac1dfeca0c92c55c181c857722a9abf6d8d8c37930ac42a0b0

            SHA512

            bbfe8b4b95c25709bc292bfd33c0bb3df26a23f9a34e335f5a541d31346c36e170c3f150386333d30db0dd12c38ddfdaf40edd59ff28fd15ce994a455b984aa2

          • \Users\Admin\AppData\Local\Temp\nsy7236.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy7236.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy7236.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy7236.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy7236.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            40df2d20ef4858b501830eb3f39fc344

            SHA1

            7f36a03ec96bd387d0f8cfceb6fccd5d7c612f96

            SHA256

            6ccbd4735f218956812e2bf323d7b99ced7d30cc09039a0cb9e81fb6a31af4a4

            SHA512

            809b6542e35d96bd05d244b3d7243bf63c1c45c9e6491bdb9823be21f4a35438478af53e027690b94696077a23b08a3513792e470009d59a10535dd74a701976

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            40df2d20ef4858b501830eb3f39fc344

            SHA1

            7f36a03ec96bd387d0f8cfceb6fccd5d7c612f96

            SHA256

            6ccbd4735f218956812e2bf323d7b99ced7d30cc09039a0cb9e81fb6a31af4a4

            SHA512

            809b6542e35d96bd05d244b3d7243bf63c1c45c9e6491bdb9823be21f4a35438478af53e027690b94696077a23b08a3513792e470009d59a10535dd74a701976

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            40df2d20ef4858b501830eb3f39fc344

            SHA1

            7f36a03ec96bd387d0f8cfceb6fccd5d7c612f96

            SHA256

            6ccbd4735f218956812e2bf323d7b99ced7d30cc09039a0cb9e81fb6a31af4a4

            SHA512

            809b6542e35d96bd05d244b3d7243bf63c1c45c9e6491bdb9823be21f4a35438478af53e027690b94696077a23b08a3513792e470009d59a10535dd74a701976

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ae00901862baeda4aada2265c30ee9d3

            SHA1

            e05a8f3cefffa87b4f35153938e40fa63d989f0a

            SHA256

            18a8a271384b2d0e4df8dd34fb516214fcc67e52bb0b5bce67f152db2d76eaae

            SHA512

            04fb672e23a66dd431d196cee431ad73c9148b6cef2dd80b8d9462163bc88ec572de095021b0ea84ed3b8ce3af16c4120942887f08175fd7a1130ae5fee203df

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ae00901862baeda4aada2265c30ee9d3

            SHA1

            e05a8f3cefffa87b4f35153938e40fa63d989f0a

            SHA256

            18a8a271384b2d0e4df8dd34fb516214fcc67e52bb0b5bce67f152db2d76eaae

            SHA512

            04fb672e23a66dd431d196cee431ad73c9148b6cef2dd80b8d9462163bc88ec572de095021b0ea84ed3b8ce3af16c4120942887f08175fd7a1130ae5fee203df

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            467fad993d9d8f91100c9d51f2605dca

            SHA1

            32c73431221374401348a25cf3ff80ec1421bc1c

            SHA256

            4505a297090bceeb8bf2ad4d6bc0bbc3e466d4830c4f43fbaa0b7c1e76b23dd8

            SHA512

            9a8ab034ee8f78bbe059923f08ab563ea842dd7bd67fbd459f84357003126d66e115669ea67c80500c2a9e3e0454fd2f4df38483fd1f8d869bc5f793223e3bf5

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1df083ee32318738d5f18908f1064c57

            SHA1

            206223a7d68633896b2582a128e842dd5dde2ccf

            SHA256

            2951b317ed65f6e4d732ee3314a83c60f9ffceca5e8acecc0afe654b98f3351a

            SHA512

            2f3e93cfa1d31874b941221b75348fc5c848f853824affaef5fd4192ec380214bdd62587610e820efbe75f7a655c169939482a7d58015e59c662fc172a5c810f

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            0a4c8fead88aef77823efa7812bf7e0c

            SHA1

            0a7b86b4915da2b3169dbba02f3a84355935d661

            SHA256

            9528ec536b89aeac1dfeca0c92c55c181c857722a9abf6d8d8c37930ac42a0b0

            SHA512

            bbfe8b4b95c25709bc292bfd33c0bb3df26a23f9a34e335f5a541d31346c36e170c3f150386333d30db0dd12c38ddfdaf40edd59ff28fd15ce994a455b984aa2

          • memory/436-59-0x0000000000000000-mapping.dmp

          • memory/472-65-0x0000000000000000-mapping.dmp

          • memory/784-81-0x0000000000000000-mapping.dmp

          • memory/1112-71-0x0000000000000000-mapping.dmp

          • memory/1168-62-0x0000000000000000-mapping.dmp

          • memory/1288-61-0x0000000000000000-mapping.dmp

          • memory/1464-88-0x0000000000000000-mapping.dmp

          • memory/1520-82-0x0000000000000000-mapping.dmp

          • memory/1616-54-0x0000000075781000-0x0000000075783000-memory.dmp

            Filesize

            8KB

          • memory/1616-63-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1616-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1616-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1676-57-0x0000000000000000-mapping.dmp

          • memory/1784-77-0x0000000000000000-mapping.dmp

          • memory/2036-87-0x0000000000000000-mapping.dmp