Analysis

  • max time kernel
    41s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:08

General

  • Target

    edf6332bf988256617a49aef8cc9da795ced267f205c9352f7693c5ec87923fb.exe

  • Size

    601KB

  • MD5

    1a321d5ee93b2488c23dfac4ee227ec2

  • SHA1

    4b97b3c9ee7e3b9f70acc065caec73a5ff75a646

  • SHA256

    edf6332bf988256617a49aef8cc9da795ced267f205c9352f7693c5ec87923fb

  • SHA512

    714124c0ffd739c5c89c9b4a5f6d3025de5dd9aeb56ea35962efc9a700086c961b4a3c33bd7e0af5fa08278b815c21eb27d9c8ffb316e348a830a0ecab09a1f7

  • SSDEEP

    6144:i6sFuai9ny5DYTBZopkBn2sew1NfL/rT9iiLbDLuvd8soMho7lvhIRkpKMkgHbbO:MIny5DYTtao7ul8sofRhC26s5Oom

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\edf6332bf988256617a49aef8cc9da795ced267f205c9352f7693c5ec87923fb.exe
    "C:\Users\Admin\AppData\Local\Temp\edf6332bf988256617a49aef8cc9da795ced267f205c9352f7693c5ec87923fb.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:948
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:240
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:940
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1240
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:608
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1232
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1372
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1536
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1744
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1908
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2012
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:572
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1176
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1028

          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

            5a6ead31968a4cfb06f298df2714d5e2

            SHA1

            c7fd3272da7b06b010c8233f6921579af5261c4c

            SHA256

            e820d4f45dc8b9768347d41cdb06d7c078c584d4c69498b9fd7e174b20f8df78

            SHA512

            911954df92c39156ee696c50a18565604257f8b4d7c5f5df240905951aa3d983399376618dcafa894a1ffbd724437a889cb34e037f139c62397a221a44cd4bbc

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

            241KB

            MD5

            fd9f797116ae542aa592b2de77e46bf6

            SHA1

            d93a8ee34a053eaa5e5b53a075d02a902defc956

            SHA256

            971c6c21023c616a52c6529a329e5937bbf0c2619d487b86d36a62431a506fbf

            SHA512

            31615c5441c695e6edac5f9a2c2bac5178736a0dc36e141f111b83f3d92a0dd5300a8d0bca1fee4b13131b708f06aac98f69d1b1439ca1de90d63e59f80c1640

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

            108KB

            MD5

            63add8e194b729cd7fd14779c5be223e

            SHA1

            d3170e14c7def2698a3a947ab2bd234cd370c192

            SHA256

            24b9fca2c8011f692562853093e5991d34c73ad8ccd1284f19f86f32738ab45c

            SHA512

            fa055caf93439762d2c784c1d2ec3d8ce841d790fe3fd4e6c48ba677c898b6e52e599fa61c03ee7bfed3e6bb86219372bfc64508d047db97c47680d78f2a0f3f

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

            176KB

            MD5

            084b21e1c76dccd8e9a4ea71f1457f02

            SHA1

            7ddffd850b9700f65c9ce97fb00ea7798978d045

            SHA256

            70ed03619205ee6c905029c14bee8a9bd96fc49ea016468658e70b52fc1f2d80

            SHA512

            4e248ab697d4c2cf6f9fe27f193000e18eb04c0185692763ba990700a40cf05d61388b096a2536c613fcb6cfc20a54569204cf4cf299b75e499f847ac4055082

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

            176KB

            MD5

            084b21e1c76dccd8e9a4ea71f1457f02

            SHA1

            7ddffd850b9700f65c9ce97fb00ea7798978d045

            SHA256

            70ed03619205ee6c905029c14bee8a9bd96fc49ea016468658e70b52fc1f2d80

            SHA512

            4e248ab697d4c2cf6f9fe27f193000e18eb04c0185692763ba990700a40cf05d61388b096a2536c613fcb6cfc20a54569204cf4cf299b75e499f847ac4055082

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

            158KB

            MD5

            13ddc0df2c1abef56e40494ba43cf3d2

            SHA1

            49574bc274d709bb88eefa8c478cc426ce84dc7d

            SHA256

            640e542f1e82a5e37607d04f0f42a76d254015b47bc88c5499d37ed7002cbb39

            SHA512

            ade6301f348db9f70e6113272bab23e6bb3db280c46974327f03b3a8881825de9a6223db6c665b9690a0b10980e7a3dfb1b785afdcc6a785d4398938b37c1e40

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

            158KB

            MD5

            13ddc0df2c1abef56e40494ba43cf3d2

            SHA1

            49574bc274d709bb88eefa8c478cc426ce84dc7d

            SHA256

            640e542f1e82a5e37607d04f0f42a76d254015b47bc88c5499d37ed7002cbb39

            SHA512

            ade6301f348db9f70e6113272bab23e6bb3db280c46974327f03b3a8881825de9a6223db6c665b9690a0b10980e7a3dfb1b785afdcc6a785d4398938b37c1e40

          • \Users\Admin\AppData\Local\Temp\nst773.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst773.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst773.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst773.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst773.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            5a6ead31968a4cfb06f298df2714d5e2

            SHA1

            c7fd3272da7b06b010c8233f6921579af5261c4c

            SHA256

            e820d4f45dc8b9768347d41cdb06d7c078c584d4c69498b9fd7e174b20f8df78

            SHA512

            911954df92c39156ee696c50a18565604257f8b4d7c5f5df240905951aa3d983399376618dcafa894a1ffbd724437a889cb34e037f139c62397a221a44cd4bbc

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            5a6ead31968a4cfb06f298df2714d5e2

            SHA1

            c7fd3272da7b06b010c8233f6921579af5261c4c

            SHA256

            e820d4f45dc8b9768347d41cdb06d7c078c584d4c69498b9fd7e174b20f8df78

            SHA512

            911954df92c39156ee696c50a18565604257f8b4d7c5f5df240905951aa3d983399376618dcafa894a1ffbd724437a889cb34e037f139c62397a221a44cd4bbc

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            5a6ead31968a4cfb06f298df2714d5e2

            SHA1

            c7fd3272da7b06b010c8233f6921579af5261c4c

            SHA256

            e820d4f45dc8b9768347d41cdb06d7c078c584d4c69498b9fd7e174b20f8df78

            SHA512

            911954df92c39156ee696c50a18565604257f8b4d7c5f5df240905951aa3d983399376618dcafa894a1ffbd724437a889cb34e037f139c62397a221a44cd4bbc

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            fd9f797116ae542aa592b2de77e46bf6

            SHA1

            d93a8ee34a053eaa5e5b53a075d02a902defc956

            SHA256

            971c6c21023c616a52c6529a329e5937bbf0c2619d487b86d36a62431a506fbf

            SHA512

            31615c5441c695e6edac5f9a2c2bac5178736a0dc36e141f111b83f3d92a0dd5300a8d0bca1fee4b13131b708f06aac98f69d1b1439ca1de90d63e59f80c1640

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            fd9f797116ae542aa592b2de77e46bf6

            SHA1

            d93a8ee34a053eaa5e5b53a075d02a902defc956

            SHA256

            971c6c21023c616a52c6529a329e5937bbf0c2619d487b86d36a62431a506fbf

            SHA512

            31615c5441c695e6edac5f9a2c2bac5178736a0dc36e141f111b83f3d92a0dd5300a8d0bca1fee4b13131b708f06aac98f69d1b1439ca1de90d63e59f80c1640

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            63add8e194b729cd7fd14779c5be223e

            SHA1

            d3170e14c7def2698a3a947ab2bd234cd370c192

            SHA256

            24b9fca2c8011f692562853093e5991d34c73ad8ccd1284f19f86f32738ab45c

            SHA512

            fa055caf93439762d2c784c1d2ec3d8ce841d790fe3fd4e6c48ba677c898b6e52e599fa61c03ee7bfed3e6bb86219372bfc64508d047db97c47680d78f2a0f3f

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            084b21e1c76dccd8e9a4ea71f1457f02

            SHA1

            7ddffd850b9700f65c9ce97fb00ea7798978d045

            SHA256

            70ed03619205ee6c905029c14bee8a9bd96fc49ea016468658e70b52fc1f2d80

            SHA512

            4e248ab697d4c2cf6f9fe27f193000e18eb04c0185692763ba990700a40cf05d61388b096a2536c613fcb6cfc20a54569204cf4cf299b75e499f847ac4055082

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            13ddc0df2c1abef56e40494ba43cf3d2

            SHA1

            49574bc274d709bb88eefa8c478cc426ce84dc7d

            SHA256

            640e542f1e82a5e37607d04f0f42a76d254015b47bc88c5499d37ed7002cbb39

            SHA512

            ade6301f348db9f70e6113272bab23e6bb3db280c46974327f03b3a8881825de9a6223db6c665b9690a0b10980e7a3dfb1b785afdcc6a785d4398938b37c1e40

          • memory/240-58-0x0000000000000000-mapping.dmp
          • memory/572-88-0x0000000000000000-mapping.dmp
          • memory/608-62-0x0000000000000000-mapping.dmp
          • memory/940-59-0x0000000000000000-mapping.dmp
          • memory/948-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/948-54-0x0000000074AB1000-0x0000000074AB3000-memory.dmp
            Filesize

            8KB

          • memory/948-56-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/948-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1232-64-0x0000000000000000-mapping.dmp
          • memory/1240-61-0x0000000000000000-mapping.dmp
          • memory/1372-71-0x0000000000000000-mapping.dmp
          • memory/1536-77-0x0000000000000000-mapping.dmp
          • memory/1744-81-0x0000000000000000-mapping.dmp
          • memory/1908-82-0x0000000000000000-mapping.dmp
          • memory/2012-87-0x0000000000000000-mapping.dmp