Analysis

  • max time kernel
    153s
  • max time network
    186s
  • 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 10:07

General

  • Target

    f2a161b3417f9387a3e85d017b0960f7e4076dfbd21938a97793070e5603797d.exe

  • Size

    602KB

  • MD5

    20ce4a86afb98801345f54571fb600ef

  • SHA1

    f9f0d7af5409f23b8db54a35c8592d8ba1a7fd57

  • SHA256

    f2a161b3417f9387a3e85d017b0960f7e4076dfbd21938a97793070e5603797d

  • SHA512

    cff987d494e238ff840d7be733aad4ab6107c155894e90daa32e0f3254021743029b71f15ccd77435957805a24954bb7bc9056852fe0451d40e2c89dace62c71

  • SSDEEP

    12288:NIny5DYTgG4uGWuCFKrDmw+Klil2idTJQVvC56i//+OMFGBa:ZUTgG4TCFgSwv+RpJQ+duG

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\f2a161b3417f9387a3e85d017b0960f7e4076dfbd21938a97793070e5603797d.exe
    "C:\Users\Admin\AppData\Local\Temp\f2a161b3417f9387a3e85d017b0960f7e4076dfbd21938a97793070e5603797d.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:4612
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4752
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4284
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4304
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4056
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2708
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3180
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1104
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2616
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3912
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4052
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3132
          • 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:3060
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3712

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsl5575.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            db24058d72e0eeaef87ba677fa2d2f1a

            SHA1

            119694c53424dc692f43c1e9bd4a1c2c7b47fbbe

            SHA256

            5d4690540e94778685e187c209b2d01f029c6f093350ca0417e27587bebfe27e

            SHA512

            bd71c2663734a047fa1b3b18228367817287bb5835cc87995dc42d59afddfbc446690dc3ac5603b41de8a69cdd99f82431c6a22bc57113e66afe9967cb7724e3

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            db24058d72e0eeaef87ba677fa2d2f1a

            SHA1

            119694c53424dc692f43c1e9bd4a1c2c7b47fbbe

            SHA256

            5d4690540e94778685e187c209b2d01f029c6f093350ca0417e27587bebfe27e

            SHA512

            bd71c2663734a047fa1b3b18228367817287bb5835cc87995dc42d59afddfbc446690dc3ac5603b41de8a69cdd99f82431c6a22bc57113e66afe9967cb7724e3

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            db24058d72e0eeaef87ba677fa2d2f1a

            SHA1

            119694c53424dc692f43c1e9bd4a1c2c7b47fbbe

            SHA256

            5d4690540e94778685e187c209b2d01f029c6f093350ca0417e27587bebfe27e

            SHA512

            bd71c2663734a047fa1b3b18228367817287bb5835cc87995dc42d59afddfbc446690dc3ac5603b41de8a69cdd99f82431c6a22bc57113e66afe9967cb7724e3

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            db24058d72e0eeaef87ba677fa2d2f1a

            SHA1

            119694c53424dc692f43c1e9bd4a1c2c7b47fbbe

            SHA256

            5d4690540e94778685e187c209b2d01f029c6f093350ca0417e27587bebfe27e

            SHA512

            bd71c2663734a047fa1b3b18228367817287bb5835cc87995dc42d59afddfbc446690dc3ac5603b41de8a69cdd99f82431c6a22bc57113e66afe9967cb7724e3

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3eb0f9ad45f261f4a01b850ec1f9207c

            SHA1

            f8c3ff454382d436b1420c33df8d042bc590ea39

            SHA256

            8251587631d93725bff137320222ac72702f12ff2ce4a91f5ae6a03c2ddca5a9

            SHA512

            69f24109001139996562177435db6a789d5ec8f3fb0f7bb5e0d5aef8a693b69f6eb9e340cb4ec584c04c8deacce6a3a04461a8424c1f6fccec1c019493c602b5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3eb0f9ad45f261f4a01b850ec1f9207c

            SHA1

            f8c3ff454382d436b1420c33df8d042bc590ea39

            SHA256

            8251587631d93725bff137320222ac72702f12ff2ce4a91f5ae6a03c2ddca5a9

            SHA512

            69f24109001139996562177435db6a789d5ec8f3fb0f7bb5e0d5aef8a693b69f6eb9e340cb4ec584c04c8deacce6a3a04461a8424c1f6fccec1c019493c602b5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3eb0f9ad45f261f4a01b850ec1f9207c

            SHA1

            f8c3ff454382d436b1420c33df8d042bc590ea39

            SHA256

            8251587631d93725bff137320222ac72702f12ff2ce4a91f5ae6a03c2ddca5a9

            SHA512

            69f24109001139996562177435db6a789d5ec8f3fb0f7bb5e0d5aef8a693b69f6eb9e340cb4ec584c04c8deacce6a3a04461a8424c1f6fccec1c019493c602b5

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e858852b382aaf8f58d3c2939be83905

            SHA1

            71950b9514b2c541d10072ce9af3e9a50f29f347

            SHA256

            9d50518d9c70b5703a1af0e8c7a2bb2781dcc09ef46511ca07d6ac216e9817e4

            SHA512

            00a5f5434e296a817b581333a7ed747f26bb997e2b83e32ad4a3cc967a36acd30b71456c8f39420461fb5b189f36940611b5c66fcd160a378df74c5cf472a5f4

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e858852b382aaf8f58d3c2939be83905

            SHA1

            71950b9514b2c541d10072ce9af3e9a50f29f347

            SHA256

            9d50518d9c70b5703a1af0e8c7a2bb2781dcc09ef46511ca07d6ac216e9817e4

            SHA512

            00a5f5434e296a817b581333a7ed747f26bb997e2b83e32ad4a3cc967a36acd30b71456c8f39420461fb5b189f36940611b5c66fcd160a378df74c5cf472a5f4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2b10e0d55498f5b24aafe94ba188c62d

            SHA1

            4b2b403b39671e97c3b3cccd508bdc81ecd64fbc

            SHA256

            b600feea261d5dcd9df8b0eaf64a444fe3a924b091ab604932c798e5742ec504

            SHA512

            02af30c2397aadb15aaf92b3a7bbe01fef505180e188917a5baf321f59a56c8f041ac141b52f3539857c88a1cd71409b1643b11cce7c478eb3d9783d747d3978

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2b10e0d55498f5b24aafe94ba188c62d

            SHA1

            4b2b403b39671e97c3b3cccd508bdc81ecd64fbc

            SHA256

            b600feea261d5dcd9df8b0eaf64a444fe3a924b091ab604932c798e5742ec504

            SHA512

            02af30c2397aadb15aaf92b3a7bbe01fef505180e188917a5baf321f59a56c8f041ac141b52f3539857c88a1cd71409b1643b11cce7c478eb3d9783d747d3978

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2b10e0d55498f5b24aafe94ba188c62d

            SHA1

            4b2b403b39671e97c3b3cccd508bdc81ecd64fbc

            SHA256

            b600feea261d5dcd9df8b0eaf64a444fe3a924b091ab604932c798e5742ec504

            SHA512

            02af30c2397aadb15aaf92b3a7bbe01fef505180e188917a5baf321f59a56c8f041ac141b52f3539857c88a1cd71409b1643b11cce7c478eb3d9783d747d3978

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            662fb4524f4424e362cb87740a3d1423

            SHA1

            073bccffe281dd8b4f000845d60fc4c4d888648f

            SHA256

            512cef1680f79ac0e37578b2b7630ea54a2edbdfb4bd80f2dfe587d9326feb21

            SHA512

            158c5e3bab0d0d536446defc77cf1e449765f5644bf63dfd8eb41e250d9d7ca03a895121b90a79975388842eae740d231a1b2005ffc90d934b2eed433177092b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            662fb4524f4424e362cb87740a3d1423

            SHA1

            073bccffe281dd8b4f000845d60fc4c4d888648f

            SHA256

            512cef1680f79ac0e37578b2b7630ea54a2edbdfb4bd80f2dfe587d9326feb21

            SHA512

            158c5e3bab0d0d536446defc77cf1e449765f5644bf63dfd8eb41e250d9d7ca03a895121b90a79975388842eae740d231a1b2005ffc90d934b2eed433177092b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            662fb4524f4424e362cb87740a3d1423

            SHA1

            073bccffe281dd8b4f000845d60fc4c4d888648f

            SHA256

            512cef1680f79ac0e37578b2b7630ea54a2edbdfb4bd80f2dfe587d9326feb21

            SHA512

            158c5e3bab0d0d536446defc77cf1e449765f5644bf63dfd8eb41e250d9d7ca03a895121b90a79975388842eae740d231a1b2005ffc90d934b2eed433177092b

          • memory/1104-154-0x0000000000000000-mapping.dmp

          • memory/2616-159-0x0000000000000000-mapping.dmp

          • memory/2708-143-0x0000000000000000-mapping.dmp

          • memory/3132-167-0x0000000000000000-mapping.dmp

          • memory/3180-148-0x0000000000000000-mapping.dmp

          • memory/3912-160-0x0000000000000000-mapping.dmp

          • memory/4052-166-0x0000000000000000-mapping.dmp

          • memory/4056-141-0x0000000000000000-mapping.dmp

          • memory/4284-137-0x0000000000000000-mapping.dmp

          • memory/4304-140-0x0000000000000000-mapping.dmp

          • memory/4612-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4612-142-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4612-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4752-136-0x0000000000000000-mapping.dmp