Analysis

  • max time kernel
    68s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

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

General

  • Target

    71af1cb7fb06d4e4f5f47749d83877123f7c11d6368c28c8cfe93683077b70b3.exe

  • Size

    602KB

  • MD5

    199b64c6affb34c7028d27cc1dc05b28

  • SHA1

    3d66a401b8009f2e60682a3ff6feec18968af167

  • SHA256

    71af1cb7fb06d4e4f5f47749d83877123f7c11d6368c28c8cfe93683077b70b3

  • SHA512

    ea0ccb8cba55a154ba36237a002c736383414b15aed0adbee134d91503dbdc7c2d709b217ae85ff9819bcc1759c25e660602744fdae189bc91ca86e61965e1a9

  • SSDEEP

    12288:GIny5DYTj8oZFHUYoKUBwMf3JdyxSe1bJ1FmQNKpzB947RAvX:oUTj8oH0ln/QX1kuaf4lA

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\71af1cb7fb06d4e4f5f47749d83877123f7c11d6368c28c8cfe93683077b70b3.exe
    "C:\Users\Admin\AppData\Local\Temp\71af1cb7fb06d4e4f5f47749d83877123f7c11d6368c28c8cfe93683077b70b3.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:856
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1348
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1168
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1508
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:776
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:900
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1016
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1172
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1488
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1304
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1968
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1540
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1972
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:964

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8c4634c38982698fe3a8b9b36f872506

            SHA1

            73fa8303b10fd0334595dff029434a58947898c8

            SHA256

            b81c7d52117031d7ea38a74c32784d222a2ec99c72fb632462f3aef86a00c398

            SHA512

            8a6954232e2840e053c452d7963cd5eb5f6e50509073cbad16305298e7d415051e120b7647d1dbc43b07de0ff718385a9b75bcd10a5664d746035a785a8ccb0b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            674cbfe7c4a94578f53cfaee05ba557a

            SHA1

            4ce9f794f4f4383b918a01029fa732d40d6ce063

            SHA256

            33a1f20c8b7d82b3385344303f7692a6c63054a42b9e6062a7747282390c31c1

            SHA512

            ffd2aefc38b6ae10fe09145e21b4c9c17b4f6b92f773e517115364b0d32777a89f98f98a17ae21cbd79d8f0559cebd980b5934569e467a10ca83889a3aa24730

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7e03088225bdec6c5c7cb89aa2738ae7

            SHA1

            7eab5b0f677385dcf47a201f104794f67961a6c4

            SHA256

            192fbd1984b3513cd6d6f155a6680e34e14425db05d508c12480091a7b3287bc

            SHA512

            d70f205407db3948098750a1737cd94f6bf632c0cc33870c1150df506b5f3924479caac67beaed6428b2982b9d594f4031b802f47b60e6190c85c496df59f656

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            76518a1e3d60987ec008e4deb2c2ffc7

            SHA1

            6be30affc2b4aa6076cf49f829db9cc1daea34dc

            SHA256

            684c76f48c338ad57494404f7fffadd33881ee417eec058b10e5ec606868d6ab

            SHA512

            6f6bd365bdc704233cb270961421eb85019741f9290abbdefe0736953e65d9a71831885815112a60fffd4ce5395bc91bfeab15af3698534855638e1eaf44515f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            76518a1e3d60987ec008e4deb2c2ffc7

            SHA1

            6be30affc2b4aa6076cf49f829db9cc1daea34dc

            SHA256

            684c76f48c338ad57494404f7fffadd33881ee417eec058b10e5ec606868d6ab

            SHA512

            6f6bd365bdc704233cb270961421eb85019741f9290abbdefe0736953e65d9a71831885815112a60fffd4ce5395bc91bfeab15af3698534855638e1eaf44515f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            00e21839ce22e447f576ab42c8630750

            SHA1

            7e9e7f171cee6d136cb5261bc1d3e492fd88f1c7

            SHA256

            5184e3048eb7a3bfc4a00735cc4e872ac5e8d7f8a1a64897f6ef6dd9389a53ce

            SHA512

            6dee4d4b8bd085882807c31c787a5296b64380d61de4b63ea9bd9b2058fd2c6aab6389a4a9d09fbde53e9f8636313bea57d98faba6ce534c65ec8be23da9104d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            00e21839ce22e447f576ab42c8630750

            SHA1

            7e9e7f171cee6d136cb5261bc1d3e492fd88f1c7

            SHA256

            5184e3048eb7a3bfc4a00735cc4e872ac5e8d7f8a1a64897f6ef6dd9389a53ce

            SHA512

            6dee4d4b8bd085882807c31c787a5296b64380d61de4b63ea9bd9b2058fd2c6aab6389a4a9d09fbde53e9f8636313bea57d98faba6ce534c65ec8be23da9104d

          • \Users\Admin\AppData\Local\Temp\nst760D.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst760D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst760D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst760D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst760D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8c4634c38982698fe3a8b9b36f872506

            SHA1

            73fa8303b10fd0334595dff029434a58947898c8

            SHA256

            b81c7d52117031d7ea38a74c32784d222a2ec99c72fb632462f3aef86a00c398

            SHA512

            8a6954232e2840e053c452d7963cd5eb5f6e50509073cbad16305298e7d415051e120b7647d1dbc43b07de0ff718385a9b75bcd10a5664d746035a785a8ccb0b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8c4634c38982698fe3a8b9b36f872506

            SHA1

            73fa8303b10fd0334595dff029434a58947898c8

            SHA256

            b81c7d52117031d7ea38a74c32784d222a2ec99c72fb632462f3aef86a00c398

            SHA512

            8a6954232e2840e053c452d7963cd5eb5f6e50509073cbad16305298e7d415051e120b7647d1dbc43b07de0ff718385a9b75bcd10a5664d746035a785a8ccb0b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8c4634c38982698fe3a8b9b36f872506

            SHA1

            73fa8303b10fd0334595dff029434a58947898c8

            SHA256

            b81c7d52117031d7ea38a74c32784d222a2ec99c72fb632462f3aef86a00c398

            SHA512

            8a6954232e2840e053c452d7963cd5eb5f6e50509073cbad16305298e7d415051e120b7647d1dbc43b07de0ff718385a9b75bcd10a5664d746035a785a8ccb0b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            674cbfe7c4a94578f53cfaee05ba557a

            SHA1

            4ce9f794f4f4383b918a01029fa732d40d6ce063

            SHA256

            33a1f20c8b7d82b3385344303f7692a6c63054a42b9e6062a7747282390c31c1

            SHA512

            ffd2aefc38b6ae10fe09145e21b4c9c17b4f6b92f773e517115364b0d32777a89f98f98a17ae21cbd79d8f0559cebd980b5934569e467a10ca83889a3aa24730

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            674cbfe7c4a94578f53cfaee05ba557a

            SHA1

            4ce9f794f4f4383b918a01029fa732d40d6ce063

            SHA256

            33a1f20c8b7d82b3385344303f7692a6c63054a42b9e6062a7747282390c31c1

            SHA512

            ffd2aefc38b6ae10fe09145e21b4c9c17b4f6b92f773e517115364b0d32777a89f98f98a17ae21cbd79d8f0559cebd980b5934569e467a10ca83889a3aa24730

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7e03088225bdec6c5c7cb89aa2738ae7

            SHA1

            7eab5b0f677385dcf47a201f104794f67961a6c4

            SHA256

            192fbd1984b3513cd6d6f155a6680e34e14425db05d508c12480091a7b3287bc

            SHA512

            d70f205407db3948098750a1737cd94f6bf632c0cc33870c1150df506b5f3924479caac67beaed6428b2982b9d594f4031b802f47b60e6190c85c496df59f656

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            76518a1e3d60987ec008e4deb2c2ffc7

            SHA1

            6be30affc2b4aa6076cf49f829db9cc1daea34dc

            SHA256

            684c76f48c338ad57494404f7fffadd33881ee417eec058b10e5ec606868d6ab

            SHA512

            6f6bd365bdc704233cb270961421eb85019741f9290abbdefe0736953e65d9a71831885815112a60fffd4ce5395bc91bfeab15af3698534855638e1eaf44515f

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            00e21839ce22e447f576ab42c8630750

            SHA1

            7e9e7f171cee6d136cb5261bc1d3e492fd88f1c7

            SHA256

            5184e3048eb7a3bfc4a00735cc4e872ac5e8d7f8a1a64897f6ef6dd9389a53ce

            SHA512

            6dee4d4b8bd085882807c31c787a5296b64380d61de4b63ea9bd9b2058fd2c6aab6389a4a9d09fbde53e9f8636313bea57d98faba6ce534c65ec8be23da9104d

          • memory/776-62-0x0000000000000000-mapping.dmp

          • memory/856-54-0x00000000766F1000-0x00000000766F3000-memory.dmp

            Filesize

            8KB

          • memory/856-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/856-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/856-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/900-64-0x0000000000000000-mapping.dmp

          • memory/1016-71-0x0000000000000000-mapping.dmp

          • memory/1168-59-0x0000000000000000-mapping.dmp

          • memory/1172-77-0x0000000000000000-mapping.dmp

          • memory/1304-82-0x0000000000000000-mapping.dmp

          • memory/1348-58-0x0000000000000000-mapping.dmp

          • memory/1488-81-0x0000000000000000-mapping.dmp

          • memory/1508-61-0x0000000000000000-mapping.dmp

          • memory/1540-88-0x0000000000000000-mapping.dmp

          • memory/1968-87-0x0000000000000000-mapping.dmp