Analysis

  • max time kernel
    39s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:13

General

  • Target

    c36c75b1ce3e30aa1ae2c820c105d9680598b14623854b1531e0305058e66e4d.exe

  • Size

    603KB

  • MD5

    245bc21415d4865cedad7ecc621b168a

  • SHA1

    013716fc47b88a5fdca2c586d28c839c24cfda50

  • SHA256

    c36c75b1ce3e30aa1ae2c820c105d9680598b14623854b1531e0305058e66e4d

  • SHA512

    8cb931f9fd81f0657213d53256fe10018d88336b61b3c482a1202169756e6c43cd2b498f9b2419d214e1a30fe1057dfa5ae3836eb0d2320327e455a8eac411d3

  • SSDEEP

    12288:DIny5DYTD9yzFDNErcwlzAOw7mLxYxIng7nIPWOZ4b:LUTD9MpucDOw7Y3g7nIOO

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\c36c75b1ce3e30aa1ae2c820c105d9680598b14623854b1531e0305058e66e4d.exe
    "C:\Users\Admin\AppData\Local\Temp\c36c75b1ce3e30aa1ae2c820c105d9680598b14623854b1531e0305058e66e4d.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:1816
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2012
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1988
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1716
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1860
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1940
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1324
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1660
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1732
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:580
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1796
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1072
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1628
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1684

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            35b004e17ff3ff1c2c81345fe49e49f4

            SHA1

            efdb7805f090282292744dc3d0f08e3e6e8c7e1a

            SHA256

            a30b2e64a0213e89fb5378fc34fa0fbfbab821d39d69ebf4ca1e448476724f9e

            SHA512

            8a538f6f292e1113982255d0fdafa807bf40e20a335b0647fa650df5a97cf8040b242491f956420d408bed7eb60994ca5483c186b24cfd23b6ae7ac5ba95c49c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            cf25829ed5101fd0f1795087e408aa24

            SHA1

            5c0bad38e45c2f3daffd30e75ed2dc7bdf852046

            SHA256

            7ffd01861a9bf4e7d6322e017793c54ee58efa92c20cf9b35f1f3a6ecfd2f751

            SHA512

            d9c1697c1caa5326f464ca90873649086fe5d91f12549ea3066d9b5dd533d6f6a912eea74cdf1166039c06f37ea1917cd56b95c3aab58db0e87149db5a02c1d8

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            1104030085dc4dd03eb825786c00c19d

            SHA1

            2b150fe1e32ecfdddb7fcb79493b5751968551d6

            SHA256

            7b161b8b32596f07d20a981da8c471cf98136fb18e5c05a65304ac27aa986258

            SHA512

            6d0713bb5c75fc9b0de3ba320d502c842ba97446809abd2a39b6808df902e2fc7df78ce4c5a53ab53c65dfaa68a4870dc1ac16622ce159d68550521487ec2c8c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            58be3d251a43f254255cf374c598b532

            SHA1

            2d86cd5a8b2783680c008bda83fda4fceff03a74

            SHA256

            1484d2fe7d578bc940c7f5967e71ec4332c5723679f9bed09bb1a0a8bca2c841

            SHA512

            3a01fc011c9d4e57067046a57c10bebd8ec4cb0406070f3f6bffe333419acd7dacbdb4f8ea37b7347b5d75128daa256f9ae0948a414710a49bda792006840efe

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            58be3d251a43f254255cf374c598b532

            SHA1

            2d86cd5a8b2783680c008bda83fda4fceff03a74

            SHA256

            1484d2fe7d578bc940c7f5967e71ec4332c5723679f9bed09bb1a0a8bca2c841

            SHA512

            3a01fc011c9d4e57067046a57c10bebd8ec4cb0406070f3f6bffe333419acd7dacbdb4f8ea37b7347b5d75128daa256f9ae0948a414710a49bda792006840efe

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            7715d88d6c928ab6723958c2d745bb22

            SHA1

            3c39058f778c683143e4b101f6976878a4274dda

            SHA256

            df2b880653cfcc66e066b2f0b79f27084609b729c5f21c69c9e1c12becf18961

            SHA512

            cd3b5379d53b300a22c89920bb7d45f026c60e0f9510a2c7d54ac723691e7adb0cce0c0a9bbcfcefbad81b186eb7ad2cfc71798ba2b5b2c7ed1bc6a33865d8bf

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            7715d88d6c928ab6723958c2d745bb22

            SHA1

            3c39058f778c683143e4b101f6976878a4274dda

            SHA256

            df2b880653cfcc66e066b2f0b79f27084609b729c5f21c69c9e1c12becf18961

            SHA512

            cd3b5379d53b300a22c89920bb7d45f026c60e0f9510a2c7d54ac723691e7adb0cce0c0a9bbcfcefbad81b186eb7ad2cfc71798ba2b5b2c7ed1bc6a33865d8bf

          • \Users\Admin\AppData\Local\Temp\nsy3E6A.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy3E6A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy3E6A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy3E6A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy3E6A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            35b004e17ff3ff1c2c81345fe49e49f4

            SHA1

            efdb7805f090282292744dc3d0f08e3e6e8c7e1a

            SHA256

            a30b2e64a0213e89fb5378fc34fa0fbfbab821d39d69ebf4ca1e448476724f9e

            SHA512

            8a538f6f292e1113982255d0fdafa807bf40e20a335b0647fa650df5a97cf8040b242491f956420d408bed7eb60994ca5483c186b24cfd23b6ae7ac5ba95c49c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            35b004e17ff3ff1c2c81345fe49e49f4

            SHA1

            efdb7805f090282292744dc3d0f08e3e6e8c7e1a

            SHA256

            a30b2e64a0213e89fb5378fc34fa0fbfbab821d39d69ebf4ca1e448476724f9e

            SHA512

            8a538f6f292e1113982255d0fdafa807bf40e20a335b0647fa650df5a97cf8040b242491f956420d408bed7eb60994ca5483c186b24cfd23b6ae7ac5ba95c49c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            35b004e17ff3ff1c2c81345fe49e49f4

            SHA1

            efdb7805f090282292744dc3d0f08e3e6e8c7e1a

            SHA256

            a30b2e64a0213e89fb5378fc34fa0fbfbab821d39d69ebf4ca1e448476724f9e

            SHA512

            8a538f6f292e1113982255d0fdafa807bf40e20a335b0647fa650df5a97cf8040b242491f956420d408bed7eb60994ca5483c186b24cfd23b6ae7ac5ba95c49c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            cf25829ed5101fd0f1795087e408aa24

            SHA1

            5c0bad38e45c2f3daffd30e75ed2dc7bdf852046

            SHA256

            7ffd01861a9bf4e7d6322e017793c54ee58efa92c20cf9b35f1f3a6ecfd2f751

            SHA512

            d9c1697c1caa5326f464ca90873649086fe5d91f12549ea3066d9b5dd533d6f6a912eea74cdf1166039c06f37ea1917cd56b95c3aab58db0e87149db5a02c1d8

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            cf25829ed5101fd0f1795087e408aa24

            SHA1

            5c0bad38e45c2f3daffd30e75ed2dc7bdf852046

            SHA256

            7ffd01861a9bf4e7d6322e017793c54ee58efa92c20cf9b35f1f3a6ecfd2f751

            SHA512

            d9c1697c1caa5326f464ca90873649086fe5d91f12549ea3066d9b5dd533d6f6a912eea74cdf1166039c06f37ea1917cd56b95c3aab58db0e87149db5a02c1d8

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            1104030085dc4dd03eb825786c00c19d

            SHA1

            2b150fe1e32ecfdddb7fcb79493b5751968551d6

            SHA256

            7b161b8b32596f07d20a981da8c471cf98136fb18e5c05a65304ac27aa986258

            SHA512

            6d0713bb5c75fc9b0de3ba320d502c842ba97446809abd2a39b6808df902e2fc7df78ce4c5a53ab53c65dfaa68a4870dc1ac16622ce159d68550521487ec2c8c

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            58be3d251a43f254255cf374c598b532

            SHA1

            2d86cd5a8b2783680c008bda83fda4fceff03a74

            SHA256

            1484d2fe7d578bc940c7f5967e71ec4332c5723679f9bed09bb1a0a8bca2c841

            SHA512

            3a01fc011c9d4e57067046a57c10bebd8ec4cb0406070f3f6bffe333419acd7dacbdb4f8ea37b7347b5d75128daa256f9ae0948a414710a49bda792006840efe

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            7715d88d6c928ab6723958c2d745bb22

            SHA1

            3c39058f778c683143e4b101f6976878a4274dda

            SHA256

            df2b880653cfcc66e066b2f0b79f27084609b729c5f21c69c9e1c12becf18961

            SHA512

            cd3b5379d53b300a22c89920bb7d45f026c60e0f9510a2c7d54ac723691e7adb0cce0c0a9bbcfcefbad81b186eb7ad2cfc71798ba2b5b2c7ed1bc6a33865d8bf

          • memory/580-81-0x0000000000000000-mapping.dmp

          • memory/1072-87-0x0000000000000000-mapping.dmp

          • memory/1324-70-0x0000000000000000-mapping.dmp

          • memory/1660-76-0x0000000000000000-mapping.dmp

          • memory/1716-61-0x0000000000000000-mapping.dmp

          • memory/1732-80-0x0000000000000000-mapping.dmp

          • memory/1796-86-0x0000000000000000-mapping.dmp

          • memory/1816-54-0x00000000756A1000-0x00000000756A3000-memory.dmp

            Filesize

            8KB

          • memory/1816-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1816-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1860-62-0x0000000000000000-mapping.dmp

          • memory/1940-64-0x0000000000000000-mapping.dmp

          • memory/1988-58-0x0000000000000000-mapping.dmp

          • memory/2012-57-0x0000000000000000-mapping.dmp