Analysis

  • max time kernel
    43s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:50

General

  • Target

    f1761e76a51841625099fdf1f560c7e04e3151de67a95224a5c5b5631a5f3f14.exe

  • Size

    446KB

  • MD5

    2ef4eacdfae97c0cd34454c24cd51211

  • SHA1

    f907d015778e232eaacc981aef3e6b55d89496b2

  • SHA256

    f1761e76a51841625099fdf1f560c7e04e3151de67a95224a5c5b5631a5f3f14

  • SHA512

    ebbef3b0d030f13f5a64650cc9a3fcdf039345a50d7efe785daf3378d1b79ae3d6ea86eca65618a7792e814e6ad2103ff62e336d7fc6edaef01eea6b348ca1ec

  • SSDEEP

    12288:WeuQ8zXi1/psQmVjIsgKWp2PMEzMzqtTiuAumiGSL:WJQ8z+Jwf6QzMcuhC

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\f1761e76a51841625099fdf1f560c7e04e3151de67a95224a5c5b5631a5f3f14.exe
    "C:\Users\Admin\AppData\Local\Temp\f1761e76a51841625099fdf1f560c7e04e3151de67a95224a5c5b5631a5f3f14.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:1920
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1264
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1240
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1348
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1380
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1716
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2044
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:676
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:568
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:992
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2024
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1672
          • 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:336

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b1a9aa6bad37ab5bf7963cc2c46e875c

            SHA1

            3577a9259670a7c901766bce781fefd8f1f37990

            SHA256

            3dfadbd2d06d4c7a797c8f44575bbb4b98b09c8c42f6d62b16f12eae67cf452a

            SHA512

            fb277addce45b823e411a680ddf4d353788c3e4bf57fbe84501e522705b8587891f46b51203170fdbe674eb84796fa91425c851b894b6cc0af5b6e4dac4ce2fc

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            38f2809f96bfcb3b8368ce2c873ea8c1

            SHA1

            0e8f00014b1713112ff67d14497040dbc072c396

            SHA256

            3e3d01b03681fe73889ac3d21d927543ea56a19ba765978debb86833ca7f2f22

            SHA512

            0e097279189d55880c6c9baba0603133bee415cb7d351b5a0978127b21fb03239a34e797a943b490e29592baf34783aee0775f3ded770bf30cd42383895d6e10

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            48b33cedac94c6cbc424d2d07d1c8a02

            SHA1

            44f0820defe09ae1e2cf5f4a3472c669f92fe47b

            SHA256

            7657b3b7279bbb59f1d3e91ce1068bbbbbd2240264bda93c190acf68a6a9ce6d

            SHA512

            ef07628c8d7e9a0ecd4ed5d1149a37bb28d21c2196e8e6fc9ca695e474b80b7a8abc014691a1133a7a775c4ec1371cca10aa0f93b7fab6d150c6f1cc13e77fd8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0de555b6669e88e759c1f8d7131e56f1

            SHA1

            c4f8a94152ddea4bd31489cd453624154abd2702

            SHA256

            2d2662525ca4c30c56cd9288aa2b6beef46ba40682948acfe8dc16b545c02aaa

            SHA512

            50381c1cd8105ecc80141221642ec8ecdba76d9eb721b9773a7df2c2c040353a73890d3efa439b090ed92bf9d3fcd9e68e39f68fd60298c7ffadfc886784487f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0de555b6669e88e759c1f8d7131e56f1

            SHA1

            c4f8a94152ddea4bd31489cd453624154abd2702

            SHA256

            2d2662525ca4c30c56cd9288aa2b6beef46ba40682948acfe8dc16b545c02aaa

            SHA512

            50381c1cd8105ecc80141221642ec8ecdba76d9eb721b9773a7df2c2c040353a73890d3efa439b090ed92bf9d3fcd9e68e39f68fd60298c7ffadfc886784487f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cba1b0b6f951288b0e2e83893ebb2f84

            SHA1

            72a15780ee9a885349f7733a078b50e7933da483

            SHA256

            e210e5de781726cd050e0369c0e8c2f1f84acd1c919306407d548337a8cdf7eb

            SHA512

            2eee45a8eb17c15ac676d6399d0162b3e36be205d0c09645ea7c0ff32e058eab42fbf2eff8454cdabbce2688c9f016fabe9d735bf705f914e4a30a475293f938

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cba1b0b6f951288b0e2e83893ebb2f84

            SHA1

            72a15780ee9a885349f7733a078b50e7933da483

            SHA256

            e210e5de781726cd050e0369c0e8c2f1f84acd1c919306407d548337a8cdf7eb

            SHA512

            2eee45a8eb17c15ac676d6399d0162b3e36be205d0c09645ea7c0ff32e058eab42fbf2eff8454cdabbce2688c9f016fabe9d735bf705f914e4a30a475293f938

          • \Users\Admin\AppData\Local\Temp\nsy7ABE.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy7ABE.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy7ABE.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy7ABE.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy7ABE.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b1a9aa6bad37ab5bf7963cc2c46e875c

            SHA1

            3577a9259670a7c901766bce781fefd8f1f37990

            SHA256

            3dfadbd2d06d4c7a797c8f44575bbb4b98b09c8c42f6d62b16f12eae67cf452a

            SHA512

            fb277addce45b823e411a680ddf4d353788c3e4bf57fbe84501e522705b8587891f46b51203170fdbe674eb84796fa91425c851b894b6cc0af5b6e4dac4ce2fc

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b1a9aa6bad37ab5bf7963cc2c46e875c

            SHA1

            3577a9259670a7c901766bce781fefd8f1f37990

            SHA256

            3dfadbd2d06d4c7a797c8f44575bbb4b98b09c8c42f6d62b16f12eae67cf452a

            SHA512

            fb277addce45b823e411a680ddf4d353788c3e4bf57fbe84501e522705b8587891f46b51203170fdbe674eb84796fa91425c851b894b6cc0af5b6e4dac4ce2fc

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b1a9aa6bad37ab5bf7963cc2c46e875c

            SHA1

            3577a9259670a7c901766bce781fefd8f1f37990

            SHA256

            3dfadbd2d06d4c7a797c8f44575bbb4b98b09c8c42f6d62b16f12eae67cf452a

            SHA512

            fb277addce45b823e411a680ddf4d353788c3e4bf57fbe84501e522705b8587891f46b51203170fdbe674eb84796fa91425c851b894b6cc0af5b6e4dac4ce2fc

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            38f2809f96bfcb3b8368ce2c873ea8c1

            SHA1

            0e8f00014b1713112ff67d14497040dbc072c396

            SHA256

            3e3d01b03681fe73889ac3d21d927543ea56a19ba765978debb86833ca7f2f22

            SHA512

            0e097279189d55880c6c9baba0603133bee415cb7d351b5a0978127b21fb03239a34e797a943b490e29592baf34783aee0775f3ded770bf30cd42383895d6e10

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            38f2809f96bfcb3b8368ce2c873ea8c1

            SHA1

            0e8f00014b1713112ff67d14497040dbc072c396

            SHA256

            3e3d01b03681fe73889ac3d21d927543ea56a19ba765978debb86833ca7f2f22

            SHA512

            0e097279189d55880c6c9baba0603133bee415cb7d351b5a0978127b21fb03239a34e797a943b490e29592baf34783aee0775f3ded770bf30cd42383895d6e10

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            48b33cedac94c6cbc424d2d07d1c8a02

            SHA1

            44f0820defe09ae1e2cf5f4a3472c669f92fe47b

            SHA256

            7657b3b7279bbb59f1d3e91ce1068bbbbbd2240264bda93c190acf68a6a9ce6d

            SHA512

            ef07628c8d7e9a0ecd4ed5d1149a37bb28d21c2196e8e6fc9ca695e474b80b7a8abc014691a1133a7a775c4ec1371cca10aa0f93b7fab6d150c6f1cc13e77fd8

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0de555b6669e88e759c1f8d7131e56f1

            SHA1

            c4f8a94152ddea4bd31489cd453624154abd2702

            SHA256

            2d2662525ca4c30c56cd9288aa2b6beef46ba40682948acfe8dc16b545c02aaa

            SHA512

            50381c1cd8105ecc80141221642ec8ecdba76d9eb721b9773a7df2c2c040353a73890d3efa439b090ed92bf9d3fcd9e68e39f68fd60298c7ffadfc886784487f

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cba1b0b6f951288b0e2e83893ebb2f84

            SHA1

            72a15780ee9a885349f7733a078b50e7933da483

            SHA256

            e210e5de781726cd050e0369c0e8c2f1f84acd1c919306407d548337a8cdf7eb

            SHA512

            2eee45a8eb17c15ac676d6399d0162b3e36be205d0c09645ea7c0ff32e058eab42fbf2eff8454cdabbce2688c9f016fabe9d735bf705f914e4a30a475293f938

          • memory/568-79-0x0000000000000000-mapping.dmp

          • memory/676-75-0x0000000000000000-mapping.dmp

          • memory/992-80-0x0000000000000000-mapping.dmp

          • memory/1240-58-0x0000000000000000-mapping.dmp

          • memory/1264-57-0x0000000000000000-mapping.dmp

          • memory/1348-60-0x0000000000000000-mapping.dmp

          • memory/1380-61-0x0000000000000000-mapping.dmp

          • memory/1672-86-0x0000000000000000-mapping.dmp

          • memory/1716-63-0x0000000000000000-mapping.dmp

          • memory/1920-54-0x0000000076181000-0x0000000076183000-memory.dmp

            Filesize

            8KB

          • memory/2024-85-0x0000000000000000-mapping.dmp

          • memory/2044-69-0x0000000000000000-mapping.dmp