Analysis

  • max time kernel
    158s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    a80a2b1a41fcf30afe2f7de0c93aba21c9d81f394164602980e5152f5c904156.exe

  • Size

    602KB

  • MD5

    311e231c732b27ab7fc832f217852c43

  • SHA1

    c47358444011f47a0390152cb4b8fcd7d7c2a074

  • SHA256

    a80a2b1a41fcf30afe2f7de0c93aba21c9d81f394164602980e5152f5c904156

  • SHA512

    c8db65efa883030f40f29d18c95499f5848d60de2879fc8463caa0e6b6b76a47fe24355b8b46861037515c3618d46c0559bdd10288ff4029a89b7f822913aa51

  • SSDEEP

    12288:XIny5DYTZPrHwiDrLuHAYtVgEzmkjTqfrWfcBHAoBZdq867B:/UT5rQiDHD8nmkfAzn48

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a80a2b1a41fcf30afe2f7de0c93aba21c9d81f394164602980e5152f5c904156.exe
    "C:\Users\Admin\AppData\Local\Temp\a80a2b1a41fcf30afe2f7de0c93aba21c9d81f394164602980e5152f5c904156.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:1628
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1784
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3132
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4208
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3628
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3356
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4584
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3472
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2816
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3452
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4092
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2236
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:2940
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4424

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr4B05.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            31b4997d734403179225c2c13e4aa5b1

            SHA1

            04bd910b3f07dc7e22490a4a788684eb6160504d

            SHA256

            c550d4bf55a5f8141d2c8b4a376a94f8410bc8ed482bfbf0e3de820f4b4a80c7

            SHA512

            c44b80b6c66b9ff3d382bfcbe0e19351cc7d1e70c5f91f87297b7feed14394ba104863d5df839a29b66fe2204e5e55a042be275b67806f50257db3737b216e47

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            31b4997d734403179225c2c13e4aa5b1

            SHA1

            04bd910b3f07dc7e22490a4a788684eb6160504d

            SHA256

            c550d4bf55a5f8141d2c8b4a376a94f8410bc8ed482bfbf0e3de820f4b4a80c7

            SHA512

            c44b80b6c66b9ff3d382bfcbe0e19351cc7d1e70c5f91f87297b7feed14394ba104863d5df839a29b66fe2204e5e55a042be275b67806f50257db3737b216e47

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            31b4997d734403179225c2c13e4aa5b1

            SHA1

            04bd910b3f07dc7e22490a4a788684eb6160504d

            SHA256

            c550d4bf55a5f8141d2c8b4a376a94f8410bc8ed482bfbf0e3de820f4b4a80c7

            SHA512

            c44b80b6c66b9ff3d382bfcbe0e19351cc7d1e70c5f91f87297b7feed14394ba104863d5df839a29b66fe2204e5e55a042be275b67806f50257db3737b216e47

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            31b4997d734403179225c2c13e4aa5b1

            SHA1

            04bd910b3f07dc7e22490a4a788684eb6160504d

            SHA256

            c550d4bf55a5f8141d2c8b4a376a94f8410bc8ed482bfbf0e3de820f4b4a80c7

            SHA512

            c44b80b6c66b9ff3d382bfcbe0e19351cc7d1e70c5f91f87297b7feed14394ba104863d5df839a29b66fe2204e5e55a042be275b67806f50257db3737b216e47

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a34b682d9638c77a25be050d162a5933

            SHA1

            50d507ee2610ab2193cd358e819675b73ad0de23

            SHA256

            e2cc048a784e4595ff63c7b797311666ae1debba293206fb731a05b1a7238a78

            SHA512

            bdfbe911438025cb1b725110873c7584c9635a7de8c5085697f325f68eb08593b69bed053686b70bffe3ea84b0b8b0cbe82e9eaa4e2437232d4fd07e517d7c06

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a34b682d9638c77a25be050d162a5933

            SHA1

            50d507ee2610ab2193cd358e819675b73ad0de23

            SHA256

            e2cc048a784e4595ff63c7b797311666ae1debba293206fb731a05b1a7238a78

            SHA512

            bdfbe911438025cb1b725110873c7584c9635a7de8c5085697f325f68eb08593b69bed053686b70bffe3ea84b0b8b0cbe82e9eaa4e2437232d4fd07e517d7c06

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a34b682d9638c77a25be050d162a5933

            SHA1

            50d507ee2610ab2193cd358e819675b73ad0de23

            SHA256

            e2cc048a784e4595ff63c7b797311666ae1debba293206fb731a05b1a7238a78

            SHA512

            bdfbe911438025cb1b725110873c7584c9635a7de8c5085697f325f68eb08593b69bed053686b70bffe3ea84b0b8b0cbe82e9eaa4e2437232d4fd07e517d7c06

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d4ce5f4a41f4dd438b567ff8af01a6dc

            SHA1

            f4532f84195831022b6dd51859c66846ad6f11c4

            SHA256

            8f19716004d7e7011eb54d6aef6ce92fb25cf52150d6d42e83abcbe235e616aa

            SHA512

            e1c3907ac3ba3dbbb23d7ca5e23b40acbc11b9be8918b29fe3bd6c953fa45b3d352f2c41355f4f1e57d2df2772c0fa9abb112cea52c9e5bd1e8e756444c841c7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d4ce5f4a41f4dd438b567ff8af01a6dc

            SHA1

            f4532f84195831022b6dd51859c66846ad6f11c4

            SHA256

            8f19716004d7e7011eb54d6aef6ce92fb25cf52150d6d42e83abcbe235e616aa

            SHA512

            e1c3907ac3ba3dbbb23d7ca5e23b40acbc11b9be8918b29fe3bd6c953fa45b3d352f2c41355f4f1e57d2df2772c0fa9abb112cea52c9e5bd1e8e756444c841c7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c88944297e92e526335928c89801cdd0

            SHA1

            9373733595c80f07420114462cdc5d5477c3b96c

            SHA256

            8d1c56d582bac2283823aeaa342af2ce18acddd7da1cbe9606820f4d577bb9e6

            SHA512

            75c1bce7bd6685114b708cdb62bdaaf7089e93f55e1904f3ba887b3b12a628aceeac3385d3d44bfd04e1b1e3517c8957ed902f539fbf4ab81e61167ecd57a042

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c88944297e92e526335928c89801cdd0

            SHA1

            9373733595c80f07420114462cdc5d5477c3b96c

            SHA256

            8d1c56d582bac2283823aeaa342af2ce18acddd7da1cbe9606820f4d577bb9e6

            SHA512

            75c1bce7bd6685114b708cdb62bdaaf7089e93f55e1904f3ba887b3b12a628aceeac3385d3d44bfd04e1b1e3517c8957ed902f539fbf4ab81e61167ecd57a042

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c88944297e92e526335928c89801cdd0

            SHA1

            9373733595c80f07420114462cdc5d5477c3b96c

            SHA256

            8d1c56d582bac2283823aeaa342af2ce18acddd7da1cbe9606820f4d577bb9e6

            SHA512

            75c1bce7bd6685114b708cdb62bdaaf7089e93f55e1904f3ba887b3b12a628aceeac3385d3d44bfd04e1b1e3517c8957ed902f539fbf4ab81e61167ecd57a042

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1a7c0d6a4371be47e9daed9f17cd5367

            SHA1

            5726ce58434d234921f927a716feb38e3c813301

            SHA256

            b409a78795f3df686cde4e330551c5cf59f3f58713de09fd0b95536de5e4fd5f

            SHA512

            7a066665b69bd1f0a3c4ab766ad7c86690a080d824371f58c3f17f545230749bbbc1c83c961cc267925eb3e54e62a26c451a37fceb5182557897d327bab7e7ed

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1a7c0d6a4371be47e9daed9f17cd5367

            SHA1

            5726ce58434d234921f927a716feb38e3c813301

            SHA256

            b409a78795f3df686cde4e330551c5cf59f3f58713de09fd0b95536de5e4fd5f

            SHA512

            7a066665b69bd1f0a3c4ab766ad7c86690a080d824371f58c3f17f545230749bbbc1c83c961cc267925eb3e54e62a26c451a37fceb5182557897d327bab7e7ed

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1a7c0d6a4371be47e9daed9f17cd5367

            SHA1

            5726ce58434d234921f927a716feb38e3c813301

            SHA256

            b409a78795f3df686cde4e330551c5cf59f3f58713de09fd0b95536de5e4fd5f

            SHA512

            7a066665b69bd1f0a3c4ab766ad7c86690a080d824371f58c3f17f545230749bbbc1c83c961cc267925eb3e54e62a26c451a37fceb5182557897d327bab7e7ed

          • memory/1628-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1628-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1628-138-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1784-136-0x0000000000000000-mapping.dmp

          • memory/2236-167-0x0000000000000000-mapping.dmp

          • memory/2816-159-0x0000000000000000-mapping.dmp

          • memory/3132-137-0x0000000000000000-mapping.dmp

          • memory/3356-143-0x0000000000000000-mapping.dmp

          • memory/3452-160-0x0000000000000000-mapping.dmp

          • memory/3472-154-0x0000000000000000-mapping.dmp

          • memory/3628-142-0x0000000000000000-mapping.dmp

          • memory/4092-166-0x0000000000000000-mapping.dmp

          • memory/4208-141-0x0000000000000000-mapping.dmp

          • memory/4584-148-0x0000000000000000-mapping.dmp