Analysis

  • max time kernel
    46s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:08

General

  • Target

    e9558ab1bd34dd3e7657017db3cd803904de313eeb93662fc91bcc33d5fa9442.exe

  • Size

    603KB

  • MD5

    54abfea76e6463c6574f1b1d4bd895ac

  • SHA1

    0d6100d580049cb5f816f98c9262ae76d10af23c

  • SHA256

    e9558ab1bd34dd3e7657017db3cd803904de313eeb93662fc91bcc33d5fa9442

  • SHA512

    5ae75ad5c5a94ea1844b65a5cd227062762378c550e827b461336c0cfc8fab609b0e21927af513cac720691b2cef63bf41c1ac896f6f8d2f598e7a204a4f7675

  • SSDEEP

    12288:aIny5DYTfIhf78EZnQV7Mx4Q2iXi8CPIlCbUpiV/I:8UTfeAEtsAl3w

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\e9558ab1bd34dd3e7657017db3cd803904de313eeb93662fc91bcc33d5fa9442.exe
    "C:\Users\Admin\AppData\Local\Temp\e9558ab1bd34dd3e7657017db3cd803904de313eeb93662fc91bcc33d5fa9442.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:1500
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:844
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1864
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1724
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:568
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1920
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1544
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1144
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1244
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:856
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1412
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1652
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:852
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1816

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            61504a3e6f526d61abea8c610a4dd58d

            SHA1

            098f9a766e573cd2caa1d58e2e84f0ad9cfc7ac1

            SHA256

            7895b264636025cdfdc068cd1878bfb01dd48a5a1cc8bcd8bd3536fe7e494930

            SHA512

            a5913a7acd7e1134298c6ec79e51784b1cdd4f30d08cb04ba8ff350af7c93cd363c86783d3b437e193e4552f2c890e98e119cdc43b1a8b60080a808021a8fc54

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c2cdc036276e4b1352172888be174462

            SHA1

            f14dfd1e81ff2d0864e707fa4c2216415078fb49

            SHA256

            624717d81a6a02e5797067efcbf1888cab9041a7909a77d214e4109053172519

            SHA512

            36c059d55b98b14cfa9da096177ac84e234daa9dfb61b416778d326fa0943a467b5640247b85f022ff47a5b08a9310a8a0fa11646774ba924ba93d12d54e804c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            88ad464ee0a63a476712ec0972be1495

            SHA1

            d6e0fb2f52cd1c821c3b182159db06b3cd9bc772

            SHA256

            f9393391a84e66d8e377028ba08a88fc2745a32178c7007bf2218e319a77159b

            SHA512

            fa655a3917a1e512e54715646a3e29e7a4a9799996c84456f6c3add657b6982c22bd905d7e87fe8726da4d955e0aa8521ed2907f92b9d74ee15b3e167acaef92

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            98723e9a7d51d03b732580782d033350

            SHA1

            888666604ec267f4e6667430ae4b43317cc7dc02

            SHA256

            3970a4a2bfd1954cdc6065a840d7870ece3a89cd90b023bb58b6354d87f1651e

            SHA512

            fbedc6fb30778e738ab24f916b522ed40febf19f7bc4c1e83404d1921e330535b8afa41d1031b16f8567049b48aad8f65ab3d6a10c72667ce55e23dd5295d53d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            98723e9a7d51d03b732580782d033350

            SHA1

            888666604ec267f4e6667430ae4b43317cc7dc02

            SHA256

            3970a4a2bfd1954cdc6065a840d7870ece3a89cd90b023bb58b6354d87f1651e

            SHA512

            fbedc6fb30778e738ab24f916b522ed40febf19f7bc4c1e83404d1921e330535b8afa41d1031b16f8567049b48aad8f65ab3d6a10c72667ce55e23dd5295d53d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4c5ac91fc83c55ab8584191b4b81f1d4

            SHA1

            4b4388a5f6a32e98e7090668e081af6fc9969a71

            SHA256

            69c5c65dc7c137b9920102b88100d117e6943fdb902b6e89c8e2e3283a14e9bd

            SHA512

            d54a2b8e4978ee945e7bca30088f5b58190a831e38015bfdf8942b12f3601257828327c78b67900e7bb5bbcf2bab5ec603883a1bd0ac35dd4779982bff30d310

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4c5ac91fc83c55ab8584191b4b81f1d4

            SHA1

            4b4388a5f6a32e98e7090668e081af6fc9969a71

            SHA256

            69c5c65dc7c137b9920102b88100d117e6943fdb902b6e89c8e2e3283a14e9bd

            SHA512

            d54a2b8e4978ee945e7bca30088f5b58190a831e38015bfdf8942b12f3601257828327c78b67900e7bb5bbcf2bab5ec603883a1bd0ac35dd4779982bff30d310

          • \Users\Admin\AppData\Local\Temp\nsoFF1A.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoFF1A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoFF1A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoFF1A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoFF1A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            61504a3e6f526d61abea8c610a4dd58d

            SHA1

            098f9a766e573cd2caa1d58e2e84f0ad9cfc7ac1

            SHA256

            7895b264636025cdfdc068cd1878bfb01dd48a5a1cc8bcd8bd3536fe7e494930

            SHA512

            a5913a7acd7e1134298c6ec79e51784b1cdd4f30d08cb04ba8ff350af7c93cd363c86783d3b437e193e4552f2c890e98e119cdc43b1a8b60080a808021a8fc54

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            61504a3e6f526d61abea8c610a4dd58d

            SHA1

            098f9a766e573cd2caa1d58e2e84f0ad9cfc7ac1

            SHA256

            7895b264636025cdfdc068cd1878bfb01dd48a5a1cc8bcd8bd3536fe7e494930

            SHA512

            a5913a7acd7e1134298c6ec79e51784b1cdd4f30d08cb04ba8ff350af7c93cd363c86783d3b437e193e4552f2c890e98e119cdc43b1a8b60080a808021a8fc54

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            61504a3e6f526d61abea8c610a4dd58d

            SHA1

            098f9a766e573cd2caa1d58e2e84f0ad9cfc7ac1

            SHA256

            7895b264636025cdfdc068cd1878bfb01dd48a5a1cc8bcd8bd3536fe7e494930

            SHA512

            a5913a7acd7e1134298c6ec79e51784b1cdd4f30d08cb04ba8ff350af7c93cd363c86783d3b437e193e4552f2c890e98e119cdc43b1a8b60080a808021a8fc54

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c2cdc036276e4b1352172888be174462

            SHA1

            f14dfd1e81ff2d0864e707fa4c2216415078fb49

            SHA256

            624717d81a6a02e5797067efcbf1888cab9041a7909a77d214e4109053172519

            SHA512

            36c059d55b98b14cfa9da096177ac84e234daa9dfb61b416778d326fa0943a467b5640247b85f022ff47a5b08a9310a8a0fa11646774ba924ba93d12d54e804c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c2cdc036276e4b1352172888be174462

            SHA1

            f14dfd1e81ff2d0864e707fa4c2216415078fb49

            SHA256

            624717d81a6a02e5797067efcbf1888cab9041a7909a77d214e4109053172519

            SHA512

            36c059d55b98b14cfa9da096177ac84e234daa9dfb61b416778d326fa0943a467b5640247b85f022ff47a5b08a9310a8a0fa11646774ba924ba93d12d54e804c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            88ad464ee0a63a476712ec0972be1495

            SHA1

            d6e0fb2f52cd1c821c3b182159db06b3cd9bc772

            SHA256

            f9393391a84e66d8e377028ba08a88fc2745a32178c7007bf2218e319a77159b

            SHA512

            fa655a3917a1e512e54715646a3e29e7a4a9799996c84456f6c3add657b6982c22bd905d7e87fe8726da4d955e0aa8521ed2907f92b9d74ee15b3e167acaef92

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            98723e9a7d51d03b732580782d033350

            SHA1

            888666604ec267f4e6667430ae4b43317cc7dc02

            SHA256

            3970a4a2bfd1954cdc6065a840d7870ece3a89cd90b023bb58b6354d87f1651e

            SHA512

            fbedc6fb30778e738ab24f916b522ed40febf19f7bc4c1e83404d1921e330535b8afa41d1031b16f8567049b48aad8f65ab3d6a10c72667ce55e23dd5295d53d

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4c5ac91fc83c55ab8584191b4b81f1d4

            SHA1

            4b4388a5f6a32e98e7090668e081af6fc9969a71

            SHA256

            69c5c65dc7c137b9920102b88100d117e6943fdb902b6e89c8e2e3283a14e9bd

            SHA512

            d54a2b8e4978ee945e7bca30088f5b58190a831e38015bfdf8942b12f3601257828327c78b67900e7bb5bbcf2bab5ec603883a1bd0ac35dd4779982bff30d310

          • memory/568-62-0x0000000000000000-mapping.dmp

          • memory/844-58-0x0000000000000000-mapping.dmp

          • memory/856-81-0x0000000000000000-mapping.dmp

          • memory/1144-76-0x0000000000000000-mapping.dmp

          • memory/1244-80-0x0000000000000000-mapping.dmp

          • memory/1412-86-0x0000000000000000-mapping.dmp

          • memory/1500-54-0x0000000075D71000-0x0000000075D73000-memory.dmp

            Filesize

            8KB

          • memory/1500-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1500-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1544-70-0x0000000000000000-mapping.dmp

          • memory/1652-87-0x0000000000000000-mapping.dmp

          • memory/1724-61-0x0000000000000000-mapping.dmp

          • memory/1864-59-0x0000000000000000-mapping.dmp

          • memory/1920-64-0x0000000000000000-mapping.dmp