Analysis

  • max time kernel
    153s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:27

General

  • Target

    439faf328724ae22695612d74e164bae1c539316076575376181899c8366b6b1.exe

  • Size

    603KB

  • MD5

    f03f521c8ac5c009f4e7d0108b72654c

  • SHA1

    a390f06fe8d08fd5791e61e674732605658d550b

  • SHA256

    439faf328724ae22695612d74e164bae1c539316076575376181899c8366b6b1

  • SHA512

    3907aad901f93e09fb470df7569bc10a70e07f33de70a7ef516091503e2339999f22ec3dbfbf05e7b99f66cea628b6fe8f69008f4514a8aeb7df56d407c78ac1

  • SSDEEP

    12288:bIny5DYTmI2Yvx46QHMdOJ6YbAIyvKwNw0GX37Cl:jUTmdYvSvMdOJ6Gv6Nw/37i

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\439faf328724ae22695612d74e164bae1c539316076575376181899c8366b6b1.exe
    "C:\Users\Admin\AppData\Local\Temp\439faf328724ae22695612d74e164bae1c539316076575376181899c8366b6b1.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:4780
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4752
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4380
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4052
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1804
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1256
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4300
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4692
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4864
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4996
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1460
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3680
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:100
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2444

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl70F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3cb0b87bc1cfa5e5a2bbd23964d3eb96

            SHA1

            83b8e974d46aa675e6b799839867307ab89f71f3

            SHA256

            ccdaeee39c7df6e23e6d66853cb4a852a3acdd734cf4fd2a580d07dd2d56b242

            SHA512

            2a735bc3f7e45472438744f015e289f34f024d6a7a14ea5120837041c0550e6c7fd9da6570aa45b2a0470852168c655d3bb5f49811667c77f310253778b844c6

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3cb0b87bc1cfa5e5a2bbd23964d3eb96

            SHA1

            83b8e974d46aa675e6b799839867307ab89f71f3

            SHA256

            ccdaeee39c7df6e23e6d66853cb4a852a3acdd734cf4fd2a580d07dd2d56b242

            SHA512

            2a735bc3f7e45472438744f015e289f34f024d6a7a14ea5120837041c0550e6c7fd9da6570aa45b2a0470852168c655d3bb5f49811667c77f310253778b844c6

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3cb0b87bc1cfa5e5a2bbd23964d3eb96

            SHA1

            83b8e974d46aa675e6b799839867307ab89f71f3

            SHA256

            ccdaeee39c7df6e23e6d66853cb4a852a3acdd734cf4fd2a580d07dd2d56b242

            SHA512

            2a735bc3f7e45472438744f015e289f34f024d6a7a14ea5120837041c0550e6c7fd9da6570aa45b2a0470852168c655d3bb5f49811667c77f310253778b844c6

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3cb0b87bc1cfa5e5a2bbd23964d3eb96

            SHA1

            83b8e974d46aa675e6b799839867307ab89f71f3

            SHA256

            ccdaeee39c7df6e23e6d66853cb4a852a3acdd734cf4fd2a580d07dd2d56b242

            SHA512

            2a735bc3f7e45472438744f015e289f34f024d6a7a14ea5120837041c0550e6c7fd9da6570aa45b2a0470852168c655d3bb5f49811667c77f310253778b844c6

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ed212d156d72a7f4f60ac92674b49ff8

            SHA1

            3ae73bbe3487174984ad906794baa05f8312efe3

            SHA256

            5ee111ef82388b7dfcb3fbe3b8f5b4eea632adbd320f09541eaf6d848631e522

            SHA512

            f2111d4eb6ff03c6462059b97223decaf9f55fcd0988307f7e6b928dd59143956742e29f6e0fc2f6cca7a5610e02e1066b779d29a6f5809c118bda0a53e30c77

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ed212d156d72a7f4f60ac92674b49ff8

            SHA1

            3ae73bbe3487174984ad906794baa05f8312efe3

            SHA256

            5ee111ef82388b7dfcb3fbe3b8f5b4eea632adbd320f09541eaf6d848631e522

            SHA512

            f2111d4eb6ff03c6462059b97223decaf9f55fcd0988307f7e6b928dd59143956742e29f6e0fc2f6cca7a5610e02e1066b779d29a6f5809c118bda0a53e30c77

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ed212d156d72a7f4f60ac92674b49ff8

            SHA1

            3ae73bbe3487174984ad906794baa05f8312efe3

            SHA256

            5ee111ef82388b7dfcb3fbe3b8f5b4eea632adbd320f09541eaf6d848631e522

            SHA512

            f2111d4eb6ff03c6462059b97223decaf9f55fcd0988307f7e6b928dd59143956742e29f6e0fc2f6cca7a5610e02e1066b779d29a6f5809c118bda0a53e30c77

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ef6b82d2895ebb52594cf2d2ff07660e

            SHA1

            b447117f481910ae42844ab6930adc4f0c12f6cd

            SHA256

            79fdd6f10e5ca5f9942e582c4e2c1e7b11f2ed462a59135c30e4103dee99222b

            SHA512

            4ae567bd5eee42aec49b0f5904a3731490e060de3e07287f23a9856cc9fe5be335a396211bf3fd556c64544873116013381335b43fc19aa61ddc6b827f0c5dc7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ef6b82d2895ebb52594cf2d2ff07660e

            SHA1

            b447117f481910ae42844ab6930adc4f0c12f6cd

            SHA256

            79fdd6f10e5ca5f9942e582c4e2c1e7b11f2ed462a59135c30e4103dee99222b

            SHA512

            4ae567bd5eee42aec49b0f5904a3731490e060de3e07287f23a9856cc9fe5be335a396211bf3fd556c64544873116013381335b43fc19aa61ddc6b827f0c5dc7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            638c403eaf478c34722d13a441adb7fa

            SHA1

            f123ab42e17d7b62dd2046984f53ddccb84f9d9b

            SHA256

            54a2a6f70f5c0b24fef691fbf76826a82356aec526af6dde3d3953e514df3de3

            SHA512

            ed536682f360240c96cbd5b3052f2f2671b84419dc405d0b15f6322808a8103cc65b5ff22b327989ff1e97e9a8e49419bfa44bf5fc8a519cac8739477c56265e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            638c403eaf478c34722d13a441adb7fa

            SHA1

            f123ab42e17d7b62dd2046984f53ddccb84f9d9b

            SHA256

            54a2a6f70f5c0b24fef691fbf76826a82356aec526af6dde3d3953e514df3de3

            SHA512

            ed536682f360240c96cbd5b3052f2f2671b84419dc405d0b15f6322808a8103cc65b5ff22b327989ff1e97e9a8e49419bfa44bf5fc8a519cac8739477c56265e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            638c403eaf478c34722d13a441adb7fa

            SHA1

            f123ab42e17d7b62dd2046984f53ddccb84f9d9b

            SHA256

            54a2a6f70f5c0b24fef691fbf76826a82356aec526af6dde3d3953e514df3de3

            SHA512

            ed536682f360240c96cbd5b3052f2f2671b84419dc405d0b15f6322808a8103cc65b5ff22b327989ff1e97e9a8e49419bfa44bf5fc8a519cac8739477c56265e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d74d6542291b882682ed88548c7924a

            SHA1

            145a0be6a55049257ce30cf28b54fc2b381e3dd1

            SHA256

            0ede8b79ac04b796d2b6a8f7d604507a620203384ca0e1c37e32e68236a5c0e5

            SHA512

            0d16582826366738b9c544ff9ac0c0e17438e2513422ccbaa9660f94ab568a2281c86abeb863f14ee26ed6cc56d981571c102e1970850d080acfe4ea168d7340

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d74d6542291b882682ed88548c7924a

            SHA1

            145a0be6a55049257ce30cf28b54fc2b381e3dd1

            SHA256

            0ede8b79ac04b796d2b6a8f7d604507a620203384ca0e1c37e32e68236a5c0e5

            SHA512

            0d16582826366738b9c544ff9ac0c0e17438e2513422ccbaa9660f94ab568a2281c86abeb863f14ee26ed6cc56d981571c102e1970850d080acfe4ea168d7340

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d74d6542291b882682ed88548c7924a

            SHA1

            145a0be6a55049257ce30cf28b54fc2b381e3dd1

            SHA256

            0ede8b79ac04b796d2b6a8f7d604507a620203384ca0e1c37e32e68236a5c0e5

            SHA512

            0d16582826366738b9c544ff9ac0c0e17438e2513422ccbaa9660f94ab568a2281c86abeb863f14ee26ed6cc56d981571c102e1970850d080acfe4ea168d7340

          • memory/1256-142-0x0000000000000000-mapping.dmp

          • memory/1460-165-0x0000000000000000-mapping.dmp

          • memory/1804-141-0x0000000000000000-mapping.dmp

          • memory/3680-166-0x0000000000000000-mapping.dmp

          • memory/4052-139-0x0000000000000000-mapping.dmp

          • memory/4300-147-0x0000000000000000-mapping.dmp

          • memory/4380-136-0x0000000000000000-mapping.dmp

          • memory/4692-153-0x0000000000000000-mapping.dmp

          • memory/4752-135-0x0000000000000000-mapping.dmp

          • memory/4780-140-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4780-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4864-158-0x0000000000000000-mapping.dmp

          • memory/4996-159-0x0000000000000000-mapping.dmp