Analysis

  • max time kernel
    65s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:22

General

  • Target

    74550df4c1d86f7d58cc5038e18a60a817752e9d4b2ca024e56871bb537b6066.exe

  • Size

    602KB

  • MD5

    8907189522f603611563388eea6bf3cd

  • SHA1

    2d9f3afd39f21448c18e9f50fb14ab1bc90b14c7

  • SHA256

    74550df4c1d86f7d58cc5038e18a60a817752e9d4b2ca024e56871bb537b6066

  • SHA512

    3dd636308b4d7e0db4fe32d3840f2277b07d6cb5a3e1b597b7786c3d533fad3963a246a07ec90cbbbad0b1055180dbba9fda11e052db61e68a1290fd3834727d

  • SSDEEP

    12288:YIny5DYTRr57vOn60CNcraS/Pp/TUFMndhrC2SKSRIU4m5J:2UTRwQNcrfnlhndhrSKSRIU7v

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\74550df4c1d86f7d58cc5038e18a60a817752e9d4b2ca024e56871bb537b6066.exe
    "C:\Users\Admin\AppData\Local\Temp\74550df4c1d86f7d58cc5038e18a60a817752e9d4b2ca024e56871bb537b6066.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:1772
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1712
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1056
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1152
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:524
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1480
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1856
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1352
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1968
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1984
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2008
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:992
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1732
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:892

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bc00ab89f567d4ace42e3daf179b1165

            SHA1

            440994a0d07c66f0e6f58c3aed4760bd9a406c23

            SHA256

            b3a669b1d8b00fb05a7c91ac4d8816081cc1cadb2a19fe9fa251efafd0e9f572

            SHA512

            cde8aeffc39d2070593570680bc477948f54d4244597dafb0119618f2ded7d8cc3f2afec2f7f7bf721f3e1155bfe3ed92d24659aaf60a065a2a2728b94be32b2

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            08c267322afa59f06183ec1b7914642d

            SHA1

            cd24860b5933d040a2796be8c3c511fb9683a3de

            SHA256

            6dfea910f3ea362751f7a628f360c531d4fa56ce95a8b6353054a86ef34937ff

            SHA512

            2728f4683386a0563de8cb40bd42f7cf21616b6b7e666abefcfbfae27cffddd513dcb628c02fdbce9c2fe880947646a25f10d590301e422af303df45679b6269

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            351594ec3829d5e33cb110fa0f9b9737

            SHA1

            b891a5a89b97e10ac01f361cb0440ebe86b495bc

            SHA256

            66b227babc30c927c61e2f04b577de92b4bd5e759452d5841cc51229d64e51fc

            SHA512

            6ecf6a15999a882f0fdd8a8b4404bedd8e33c0cb4e6063e7cee75ef2e9714ac0ae76e3868fb3cdc1dbbc500f00b60831a4f43fc288224a5bea4a95a688162021

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6877b8428f5115733690a73b57101d2a

            SHA1

            2d99e990fca4789b37af734edfd64319da7bfe7f

            SHA256

            67e4d592f1976b43eac3cd2a5cc5772acc2ca57e1d95d8fe1ef85c8ca63e3213

            SHA512

            d78295182877f598ef1da99a06201265d5e5e29e36f69cd3abd17762cef0dd81ae10aebea06f303a79e2ad4c4b0d9aa8452ddfd11795a2b84915aa14aaad1849

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6877b8428f5115733690a73b57101d2a

            SHA1

            2d99e990fca4789b37af734edfd64319da7bfe7f

            SHA256

            67e4d592f1976b43eac3cd2a5cc5772acc2ca57e1d95d8fe1ef85c8ca63e3213

            SHA512

            d78295182877f598ef1da99a06201265d5e5e29e36f69cd3abd17762cef0dd81ae10aebea06f303a79e2ad4c4b0d9aa8452ddfd11795a2b84915aa14aaad1849

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4f61db012e0e2883236210376cf6735c

            SHA1

            e6f64e55a0b81a469076f540eec993a564d8db0d

            SHA256

            2d28465357b348b4c28c3f01d97d862750714933df62353a09298f3a89050a87

            SHA512

            486a0a9171a42b64c533af115d734fcc6a2e41d9016870426ea607eefe81ac256ffeeb1b7a439f64ce0677b420ca459bd347ff757c99720de0f008aa04c1d8f8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4f61db012e0e2883236210376cf6735c

            SHA1

            e6f64e55a0b81a469076f540eec993a564d8db0d

            SHA256

            2d28465357b348b4c28c3f01d97d862750714933df62353a09298f3a89050a87

            SHA512

            486a0a9171a42b64c533af115d734fcc6a2e41d9016870426ea607eefe81ac256ffeeb1b7a439f64ce0677b420ca459bd347ff757c99720de0f008aa04c1d8f8

          • \Users\Admin\AppData\Local\Temp\nseBBC4.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseBBC4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseBBC4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseBBC4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseBBC4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bc00ab89f567d4ace42e3daf179b1165

            SHA1

            440994a0d07c66f0e6f58c3aed4760bd9a406c23

            SHA256

            b3a669b1d8b00fb05a7c91ac4d8816081cc1cadb2a19fe9fa251efafd0e9f572

            SHA512

            cde8aeffc39d2070593570680bc477948f54d4244597dafb0119618f2ded7d8cc3f2afec2f7f7bf721f3e1155bfe3ed92d24659aaf60a065a2a2728b94be32b2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bc00ab89f567d4ace42e3daf179b1165

            SHA1

            440994a0d07c66f0e6f58c3aed4760bd9a406c23

            SHA256

            b3a669b1d8b00fb05a7c91ac4d8816081cc1cadb2a19fe9fa251efafd0e9f572

            SHA512

            cde8aeffc39d2070593570680bc477948f54d4244597dafb0119618f2ded7d8cc3f2afec2f7f7bf721f3e1155bfe3ed92d24659aaf60a065a2a2728b94be32b2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bc00ab89f567d4ace42e3daf179b1165

            SHA1

            440994a0d07c66f0e6f58c3aed4760bd9a406c23

            SHA256

            b3a669b1d8b00fb05a7c91ac4d8816081cc1cadb2a19fe9fa251efafd0e9f572

            SHA512

            cde8aeffc39d2070593570680bc477948f54d4244597dafb0119618f2ded7d8cc3f2afec2f7f7bf721f3e1155bfe3ed92d24659aaf60a065a2a2728b94be32b2

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            08c267322afa59f06183ec1b7914642d

            SHA1

            cd24860b5933d040a2796be8c3c511fb9683a3de

            SHA256

            6dfea910f3ea362751f7a628f360c531d4fa56ce95a8b6353054a86ef34937ff

            SHA512

            2728f4683386a0563de8cb40bd42f7cf21616b6b7e666abefcfbfae27cffddd513dcb628c02fdbce9c2fe880947646a25f10d590301e422af303df45679b6269

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            08c267322afa59f06183ec1b7914642d

            SHA1

            cd24860b5933d040a2796be8c3c511fb9683a3de

            SHA256

            6dfea910f3ea362751f7a628f360c531d4fa56ce95a8b6353054a86ef34937ff

            SHA512

            2728f4683386a0563de8cb40bd42f7cf21616b6b7e666abefcfbfae27cffddd513dcb628c02fdbce9c2fe880947646a25f10d590301e422af303df45679b6269

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            351594ec3829d5e33cb110fa0f9b9737

            SHA1

            b891a5a89b97e10ac01f361cb0440ebe86b495bc

            SHA256

            66b227babc30c927c61e2f04b577de92b4bd5e759452d5841cc51229d64e51fc

            SHA512

            6ecf6a15999a882f0fdd8a8b4404bedd8e33c0cb4e6063e7cee75ef2e9714ac0ae76e3868fb3cdc1dbbc500f00b60831a4f43fc288224a5bea4a95a688162021

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6877b8428f5115733690a73b57101d2a

            SHA1

            2d99e990fca4789b37af734edfd64319da7bfe7f

            SHA256

            67e4d592f1976b43eac3cd2a5cc5772acc2ca57e1d95d8fe1ef85c8ca63e3213

            SHA512

            d78295182877f598ef1da99a06201265d5e5e29e36f69cd3abd17762cef0dd81ae10aebea06f303a79e2ad4c4b0d9aa8452ddfd11795a2b84915aa14aaad1849

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4f61db012e0e2883236210376cf6735c

            SHA1

            e6f64e55a0b81a469076f540eec993a564d8db0d

            SHA256

            2d28465357b348b4c28c3f01d97d862750714933df62353a09298f3a89050a87

            SHA512

            486a0a9171a42b64c533af115d734fcc6a2e41d9016870426ea607eefe81ac256ffeeb1b7a439f64ce0677b420ca459bd347ff757c99720de0f008aa04c1d8f8

          • memory/524-62-0x0000000000000000-mapping.dmp

          • memory/992-88-0x0000000000000000-mapping.dmp

          • memory/1056-58-0x0000000000000000-mapping.dmp

          • memory/1152-61-0x0000000000000000-mapping.dmp

          • memory/1352-77-0x0000000000000000-mapping.dmp

          • memory/1480-64-0x0000000000000000-mapping.dmp

          • memory/1712-57-0x0000000000000000-mapping.dmp

          • memory/1772-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1772-54-0x0000000075291000-0x0000000075293000-memory.dmp

            Filesize

            8KB

          • memory/1772-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1772-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1856-71-0x0000000000000000-mapping.dmp

          • memory/1968-81-0x0000000000000000-mapping.dmp

          • memory/1984-82-0x0000000000000000-mapping.dmp

          • memory/2008-87-0x0000000000000000-mapping.dmp