Analysis

  • max time kernel
    41s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:57

General

  • Target

    4511752089775667f287f96c7e2e03ac56e3cf1c457f4e77a3d0965019af9ae8.exe

  • Size

    446KB

  • MD5

    863ab1360312bdab181f9de5d260f35a

  • SHA1

    a71674e1b9190259dd3faefd41f48d23855d4416

  • SHA256

    4511752089775667f287f96c7e2e03ac56e3cf1c457f4e77a3d0965019af9ae8

  • SHA512

    4130717aaddc03ddd9c04ae0dacfd55dbd3a9b39743c714c552a4a0531761207d2cb56d93d25f6bff7db1d0ab7514649985118f317d8c27b3dea40c55c63071c

  • SSDEEP

    12288:0wcjfL3omCwBEAycfwE9c3PUaTH/Eu67hM5aozluK1OLDJ09Vp:0wc3gwBELsNc3PHLIhM8UhOmp

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\4511752089775667f287f96c7e2e03ac56e3cf1c457f4e77a3d0965019af9ae8.exe
    "C:\Users\Admin\AppData\Local\Temp\4511752089775667f287f96c7e2e03ac56e3cf1c457f4e77a3d0965019af9ae8.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:1636
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1284
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1292
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1408
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1268
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:852
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1548
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1744
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:108
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1716
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:868
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1252
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1644
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1664

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cee3583f9b97034622bbee2dc81a363a

            SHA1

            7435a8763af13a928f0cffe163d1f732c2973eb8

            SHA256

            71296743f70e7fc6f9473498f0838a061e293e686e16a40fec68a048fca200c1

            SHA512

            c2012951401a26829ef53e651defff29f37dcf816cdc4183e09879806b30e73afdfc83eea03a8f239b63db406350b811952b0fe60bb7accde2db3e808f654e98

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            b4442024c2f16f82c5c97c71e1039738

            SHA1

            35177ea29771ad36929948d70d7970d5f8d71919

            SHA256

            74329d4c5815a5ae99325c7e92fdb2b0f52d46ad2e683a1ca8d8459852992a7b

            SHA512

            6234c03f5dfa47cd061b981d4b4d3ef1df309d80fb86f3e6c10e4ecc7ba7bd3f079f92572162f1bd12e87fa867f2cdfa28e26a916d56307c6bfd46900903eae6

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            12802f55be8731b249b1354f203e9312

            SHA1

            15141ab598c6aafdac95e1fd7e385e764c865688

            SHA256

            31dfa93b218c1f590959f2956687fc41e16743fa0d7faa9a09cf44b4a1e218cc

            SHA512

            3f10c147e0e3f8822c8ed91498d753c1bb830d9e1bb3ca45fdcbcd0720c0f18aa87d7b77285aaaadee628ef1b7d4b579d814801961565afb9e3608d4a71b2f27

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            5ec4d60a46326f6894c6495df73426b9

            SHA1

            0d85f6605741fea65d5fc644e187dc8ec278db55

            SHA256

            ee5e299172bb7bc505fb70a4f83af53404eef1f1899ea79d1c4f3679d4cc3376

            SHA512

            205cdab53ba9c20c400bab512e03c5b81dcdf4c509742cd1e85c12b7cc41426e97a33b9258022d91429918ca91aa49a4c1416f9a40bec42230127d013071ec52

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            5ec4d60a46326f6894c6495df73426b9

            SHA1

            0d85f6605741fea65d5fc644e187dc8ec278db55

            SHA256

            ee5e299172bb7bc505fb70a4f83af53404eef1f1899ea79d1c4f3679d4cc3376

            SHA512

            205cdab53ba9c20c400bab512e03c5b81dcdf4c509742cd1e85c12b7cc41426e97a33b9258022d91429918ca91aa49a4c1416f9a40bec42230127d013071ec52

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            84aa207090133fbbd3692cf619c8b187

            SHA1

            064fbf311fefbf09353916775d1f97520032f926

            SHA256

            6d3053b98930d24b9a59339e180c6ed494d48a4a19eb9f72e6e8bd484023cefe

            SHA512

            3d372751562dc26ba64e1fcd1afac9e3502d0560ecdbbf1298ef07433518602a36895d054554e01c227ab37adf680414badc8359dde5415704afb5946750b8d5

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            84aa207090133fbbd3692cf619c8b187

            SHA1

            064fbf311fefbf09353916775d1f97520032f926

            SHA256

            6d3053b98930d24b9a59339e180c6ed494d48a4a19eb9f72e6e8bd484023cefe

            SHA512

            3d372751562dc26ba64e1fcd1afac9e3502d0560ecdbbf1298ef07433518602a36895d054554e01c227ab37adf680414badc8359dde5415704afb5946750b8d5

          • \Users\Admin\AppData\Local\Temp\nsyFEBC.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyFEBC.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFEBC.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFEBC.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFEBC.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cee3583f9b97034622bbee2dc81a363a

            SHA1

            7435a8763af13a928f0cffe163d1f732c2973eb8

            SHA256

            71296743f70e7fc6f9473498f0838a061e293e686e16a40fec68a048fca200c1

            SHA512

            c2012951401a26829ef53e651defff29f37dcf816cdc4183e09879806b30e73afdfc83eea03a8f239b63db406350b811952b0fe60bb7accde2db3e808f654e98

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cee3583f9b97034622bbee2dc81a363a

            SHA1

            7435a8763af13a928f0cffe163d1f732c2973eb8

            SHA256

            71296743f70e7fc6f9473498f0838a061e293e686e16a40fec68a048fca200c1

            SHA512

            c2012951401a26829ef53e651defff29f37dcf816cdc4183e09879806b30e73afdfc83eea03a8f239b63db406350b811952b0fe60bb7accde2db3e808f654e98

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cee3583f9b97034622bbee2dc81a363a

            SHA1

            7435a8763af13a928f0cffe163d1f732c2973eb8

            SHA256

            71296743f70e7fc6f9473498f0838a061e293e686e16a40fec68a048fca200c1

            SHA512

            c2012951401a26829ef53e651defff29f37dcf816cdc4183e09879806b30e73afdfc83eea03a8f239b63db406350b811952b0fe60bb7accde2db3e808f654e98

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            b4442024c2f16f82c5c97c71e1039738

            SHA1

            35177ea29771ad36929948d70d7970d5f8d71919

            SHA256

            74329d4c5815a5ae99325c7e92fdb2b0f52d46ad2e683a1ca8d8459852992a7b

            SHA512

            6234c03f5dfa47cd061b981d4b4d3ef1df309d80fb86f3e6c10e4ecc7ba7bd3f079f92572162f1bd12e87fa867f2cdfa28e26a916d56307c6bfd46900903eae6

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            b4442024c2f16f82c5c97c71e1039738

            SHA1

            35177ea29771ad36929948d70d7970d5f8d71919

            SHA256

            74329d4c5815a5ae99325c7e92fdb2b0f52d46ad2e683a1ca8d8459852992a7b

            SHA512

            6234c03f5dfa47cd061b981d4b4d3ef1df309d80fb86f3e6c10e4ecc7ba7bd3f079f92572162f1bd12e87fa867f2cdfa28e26a916d56307c6bfd46900903eae6

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            12802f55be8731b249b1354f203e9312

            SHA1

            15141ab598c6aafdac95e1fd7e385e764c865688

            SHA256

            31dfa93b218c1f590959f2956687fc41e16743fa0d7faa9a09cf44b4a1e218cc

            SHA512

            3f10c147e0e3f8822c8ed91498d753c1bb830d9e1bb3ca45fdcbcd0720c0f18aa87d7b77285aaaadee628ef1b7d4b579d814801961565afb9e3608d4a71b2f27

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            5ec4d60a46326f6894c6495df73426b9

            SHA1

            0d85f6605741fea65d5fc644e187dc8ec278db55

            SHA256

            ee5e299172bb7bc505fb70a4f83af53404eef1f1899ea79d1c4f3679d4cc3376

            SHA512

            205cdab53ba9c20c400bab512e03c5b81dcdf4c509742cd1e85c12b7cc41426e97a33b9258022d91429918ca91aa49a4c1416f9a40bec42230127d013071ec52

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            84aa207090133fbbd3692cf619c8b187

            SHA1

            064fbf311fefbf09353916775d1f97520032f926

            SHA256

            6d3053b98930d24b9a59339e180c6ed494d48a4a19eb9f72e6e8bd484023cefe

            SHA512

            3d372751562dc26ba64e1fcd1afac9e3502d0560ecdbbf1298ef07433518602a36895d054554e01c227ab37adf680414badc8359dde5415704afb5946750b8d5

          • memory/108-79-0x0000000000000000-mapping.dmp
          • memory/852-63-0x0000000000000000-mapping.dmp
          • memory/868-85-0x0000000000000000-mapping.dmp
          • memory/1252-86-0x0000000000000000-mapping.dmp
          • memory/1268-61-0x0000000000000000-mapping.dmp
          • memory/1284-57-0x0000000000000000-mapping.dmp
          • memory/1292-58-0x0000000000000000-mapping.dmp
          • memory/1408-60-0x0000000000000000-mapping.dmp
          • memory/1548-69-0x0000000000000000-mapping.dmp
          • memory/1636-54-0x00000000762F1000-0x00000000762F3000-memory.dmp
            Filesize

            8KB

          • memory/1716-80-0x0000000000000000-mapping.dmp
          • memory/1744-75-0x0000000000000000-mapping.dmp