Analysis

  • max time kernel
    92s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2022 15:01

General

  • Target

    3d41cc257b46582ef23a3f79c8efc05ab938f2cb10c32a58861c0a037a7d2df6.exe

  • Size

    561KB

  • MD5

    2f4dabe7721b6cf7951c874548ec3a22

  • SHA1

    055ae664fe3372bfbdee9cf33eb9ad34971e601a

  • SHA256

    3d41cc257b46582ef23a3f79c8efc05ab938f2cb10c32a58861c0a037a7d2df6

  • SHA512

    f27612947e4566749ee88b3580ecf3e230aaf37f8232ffdff5e46f4327682ba869e625a735c6e85c00932d64522fddcf6cd4e4e4c2293001890f9a6d7cbfefc0

  • SSDEEP

    12288:2PRYzPbfN+/wqXD5bdz5Shk8gWQ/RZWrlKuMofA41uu:rzTfc7pz5R9GhMoozu

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\3d41cc257b46582ef23a3f79c8efc05ab938f2cb10c32a58861c0a037a7d2df6.exe
    "C:\Users\Admin\AppData\Local\Temp\3d41cc257b46582ef23a3f79c8efc05ab938f2cb10c32a58861c0a037a7d2df6.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:3312
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4724
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:5028
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4944
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4892
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2092
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2748
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3596
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4720
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2012
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2788
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:5092
          • 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:1384
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1692

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nshDA59.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            016112d23abad94e3cd24f336802fcdb

            SHA1

            5a7268980ec15356808a05dbe6679e33e96597bb

            SHA256

            ec55434d96a65b6aab3b6d2f622dd64cf0f54a45728657e8968c26c0d33f95bd

            SHA512

            6d715b21cb9c82614616d6530d93c37c603ee2b8db17c8437b50bebe2f02b21ea30e3a39c195ab5a5304c0185346236641b3efbffaba57b5138697464a22434b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            016112d23abad94e3cd24f336802fcdb

            SHA1

            5a7268980ec15356808a05dbe6679e33e96597bb

            SHA256

            ec55434d96a65b6aab3b6d2f622dd64cf0f54a45728657e8968c26c0d33f95bd

            SHA512

            6d715b21cb9c82614616d6530d93c37c603ee2b8db17c8437b50bebe2f02b21ea30e3a39c195ab5a5304c0185346236641b3efbffaba57b5138697464a22434b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            016112d23abad94e3cd24f336802fcdb

            SHA1

            5a7268980ec15356808a05dbe6679e33e96597bb

            SHA256

            ec55434d96a65b6aab3b6d2f622dd64cf0f54a45728657e8968c26c0d33f95bd

            SHA512

            6d715b21cb9c82614616d6530d93c37c603ee2b8db17c8437b50bebe2f02b21ea30e3a39c195ab5a5304c0185346236641b3efbffaba57b5138697464a22434b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            016112d23abad94e3cd24f336802fcdb

            SHA1

            5a7268980ec15356808a05dbe6679e33e96597bb

            SHA256

            ec55434d96a65b6aab3b6d2f622dd64cf0f54a45728657e8968c26c0d33f95bd

            SHA512

            6d715b21cb9c82614616d6530d93c37c603ee2b8db17c8437b50bebe2f02b21ea30e3a39c195ab5a5304c0185346236641b3efbffaba57b5138697464a22434b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e7f94c1531314962355d0a5e19e0f161

            SHA1

            ea39975832f81cc70bd2eaee8b0c534de07298a8

            SHA256

            e4592e5399003a4926c6c0964398a948fed2bbf106494ebfd4ab090c9bda45a9

            SHA512

            e59446f03ba9bddf75beac62ff9c61e422ded397ce4b355ac9bb40ffedb0758cd9429eaf12d020698a4035b9a55c2243a5597bfa102dde94cf68ce085eb13a16

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e7f94c1531314962355d0a5e19e0f161

            SHA1

            ea39975832f81cc70bd2eaee8b0c534de07298a8

            SHA256

            e4592e5399003a4926c6c0964398a948fed2bbf106494ebfd4ab090c9bda45a9

            SHA512

            e59446f03ba9bddf75beac62ff9c61e422ded397ce4b355ac9bb40ffedb0758cd9429eaf12d020698a4035b9a55c2243a5597bfa102dde94cf68ce085eb13a16

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e7f94c1531314962355d0a5e19e0f161

            SHA1

            ea39975832f81cc70bd2eaee8b0c534de07298a8

            SHA256

            e4592e5399003a4926c6c0964398a948fed2bbf106494ebfd4ab090c9bda45a9

            SHA512

            e59446f03ba9bddf75beac62ff9c61e422ded397ce4b355ac9bb40ffedb0758cd9429eaf12d020698a4035b9a55c2243a5597bfa102dde94cf68ce085eb13a16

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c0d4ee15fc237c950beacbb28e7a024d

            SHA1

            c084ad7f1b78f83b918eddeb1a2ebdcd7d802a06

            SHA256

            d65e8bf723f0673ecc65c60d73218b8c1a86b826895f64c6a85c7a218ffc9b0b

            SHA512

            75befa04ce6f8b73d8b92cba428e76107a88c7675244efbe4871e5d06124337d3ad387d74004c27f319e5d1e13091d709fc1095c51dc39f90c229efd7dc13b34

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c0d4ee15fc237c950beacbb28e7a024d

            SHA1

            c084ad7f1b78f83b918eddeb1a2ebdcd7d802a06

            SHA256

            d65e8bf723f0673ecc65c60d73218b8c1a86b826895f64c6a85c7a218ffc9b0b

            SHA512

            75befa04ce6f8b73d8b92cba428e76107a88c7675244efbe4871e5d06124337d3ad387d74004c27f319e5d1e13091d709fc1095c51dc39f90c229efd7dc13b34

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6822c7d77d0059116bd5523a7b561cdb

            SHA1

            e6c967b160de9d0928fb253995b6b7d449f8ce1e

            SHA256

            b407d94bc75780dd6e0112d22788eae66d10e8ccd261ad1ebf4e9e5a4d736655

            SHA512

            e38fee6deccf393308c22ba8be59fb96934a9dbbe4e91325c3da75ed893e8f4e28f942ccd76bc078b8107c1de2388859be49b974b0ae6f84205be3865fc582f7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6822c7d77d0059116bd5523a7b561cdb

            SHA1

            e6c967b160de9d0928fb253995b6b7d449f8ce1e

            SHA256

            b407d94bc75780dd6e0112d22788eae66d10e8ccd261ad1ebf4e9e5a4d736655

            SHA512

            e38fee6deccf393308c22ba8be59fb96934a9dbbe4e91325c3da75ed893e8f4e28f942ccd76bc078b8107c1de2388859be49b974b0ae6f84205be3865fc582f7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6822c7d77d0059116bd5523a7b561cdb

            SHA1

            e6c967b160de9d0928fb253995b6b7d449f8ce1e

            SHA256

            b407d94bc75780dd6e0112d22788eae66d10e8ccd261ad1ebf4e9e5a4d736655

            SHA512

            e38fee6deccf393308c22ba8be59fb96934a9dbbe4e91325c3da75ed893e8f4e28f942ccd76bc078b8107c1de2388859be49b974b0ae6f84205be3865fc582f7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            baa46ef4998d631a935fcc6bb782a9f9

            SHA1

            8ba5630e3edb34771102e7dff30254e6b43e3f46

            SHA256

            1eef3d805fd8cb8fafaa443fb826a906e4f69797834c75011b3e7d273501b261

            SHA512

            428db65275c60dd4924f4aa521f469e338c0860083e8c3229bdff4dc68ddcf2f636ce4aa4c345fdaa052bfe6558eded7ec7c196f6dd5fc8a601fb6547ae643c6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            baa46ef4998d631a935fcc6bb782a9f9

            SHA1

            8ba5630e3edb34771102e7dff30254e6b43e3f46

            SHA256

            1eef3d805fd8cb8fafaa443fb826a906e4f69797834c75011b3e7d273501b261

            SHA512

            428db65275c60dd4924f4aa521f469e338c0860083e8c3229bdff4dc68ddcf2f636ce4aa4c345fdaa052bfe6558eded7ec7c196f6dd5fc8a601fb6547ae643c6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            baa46ef4998d631a935fcc6bb782a9f9

            SHA1

            8ba5630e3edb34771102e7dff30254e6b43e3f46

            SHA256

            1eef3d805fd8cb8fafaa443fb826a906e4f69797834c75011b3e7d273501b261

            SHA512

            428db65275c60dd4924f4aa521f469e338c0860083e8c3229bdff4dc68ddcf2f636ce4aa4c345fdaa052bfe6558eded7ec7c196f6dd5fc8a601fb6547ae643c6

          • memory/3312-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3312-147-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3312-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB