Analysis

  • max time kernel
    162s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:15

General

  • Target

    aca4be4b0bcbb60c1820e76a811928d35908bbcad3fff89317de0422b886ee01.exe

  • Size

    602KB

  • MD5

    dff32bb5527928b8dc83b6913e840205

  • SHA1

    3d37b8b2ba439aa919e8671548172e0623266930

  • SHA256

    aca4be4b0bcbb60c1820e76a811928d35908bbcad3fff89317de0422b886ee01

  • SHA512

    9e4c8d56753c2d911c7f8017d9680529b15b7969927930fa61511e543a9f571fece34f87a1bd2f7cd270cc9a1ab3d1ddc56128c7acc0c373f112bf42fead127a

  • SSDEEP

    12288:OIny5DYTjNvP/zZaVFhoimgqEU/yXM0mT60QYMvj+U:QUTjNvPtanab9ENcH60OyU

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\aca4be4b0bcbb60c1820e76a811928d35908bbcad3fff89317de0422b886ee01.exe
    "C:\Users\Admin\AppData\Local\Temp\aca4be4b0bcbb60c1820e76a811928d35908bbcad3fff89317de0422b886ee01.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:964
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2228
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3376
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1960
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4820
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4780
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3664
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2852
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2020
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4064
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:228
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2668
          • 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:3464
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:600

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbCA2D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            84c90e521ee6821881eedd67c2ed5fc5

            SHA1

            a61e20f68ca013d9be4a89b3c74edc0412ca8879

            SHA256

            5c978756c8f9af341ef3cdc8ce8c266f2150febddf9d8db11d34268ac547051d

            SHA512

            a4cb3c98c63e98405a3475ec8e6287c4358fdb795894a48dd225dd19fa9d70ee7634cb2d71eb590c3061ae3f4159b2daddf496977f0b5ac3d8482c780ee65279

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            84c90e521ee6821881eedd67c2ed5fc5

            SHA1

            a61e20f68ca013d9be4a89b3c74edc0412ca8879

            SHA256

            5c978756c8f9af341ef3cdc8ce8c266f2150febddf9d8db11d34268ac547051d

            SHA512

            a4cb3c98c63e98405a3475ec8e6287c4358fdb795894a48dd225dd19fa9d70ee7634cb2d71eb590c3061ae3f4159b2daddf496977f0b5ac3d8482c780ee65279

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            84c90e521ee6821881eedd67c2ed5fc5

            SHA1

            a61e20f68ca013d9be4a89b3c74edc0412ca8879

            SHA256

            5c978756c8f9af341ef3cdc8ce8c266f2150febddf9d8db11d34268ac547051d

            SHA512

            a4cb3c98c63e98405a3475ec8e6287c4358fdb795894a48dd225dd19fa9d70ee7634cb2d71eb590c3061ae3f4159b2daddf496977f0b5ac3d8482c780ee65279

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            84c90e521ee6821881eedd67c2ed5fc5

            SHA1

            a61e20f68ca013d9be4a89b3c74edc0412ca8879

            SHA256

            5c978756c8f9af341ef3cdc8ce8c266f2150febddf9d8db11d34268ac547051d

            SHA512

            a4cb3c98c63e98405a3475ec8e6287c4358fdb795894a48dd225dd19fa9d70ee7634cb2d71eb590c3061ae3f4159b2daddf496977f0b5ac3d8482c780ee65279

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8de54dd7dfd5ddc2d5f09faec65947c8

            SHA1

            9e6e227c9d5ad85e409498590db4c21fcfc0c096

            SHA256

            4eb2eb159129e09293131d7f734de2665f8ef9f251ba2bd28682cdcb10b8668e

            SHA512

            1e19d99a23a453d098825aea9ed5047534a6a1954b48b7cc86928926111b8d3b60bd11f26cd74668d22d72392b1532b55d813936f9dca6ce5be26d82828c4627

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8de54dd7dfd5ddc2d5f09faec65947c8

            SHA1

            9e6e227c9d5ad85e409498590db4c21fcfc0c096

            SHA256

            4eb2eb159129e09293131d7f734de2665f8ef9f251ba2bd28682cdcb10b8668e

            SHA512

            1e19d99a23a453d098825aea9ed5047534a6a1954b48b7cc86928926111b8d3b60bd11f26cd74668d22d72392b1532b55d813936f9dca6ce5be26d82828c4627

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8de54dd7dfd5ddc2d5f09faec65947c8

            SHA1

            9e6e227c9d5ad85e409498590db4c21fcfc0c096

            SHA256

            4eb2eb159129e09293131d7f734de2665f8ef9f251ba2bd28682cdcb10b8668e

            SHA512

            1e19d99a23a453d098825aea9ed5047534a6a1954b48b7cc86928926111b8d3b60bd11f26cd74668d22d72392b1532b55d813936f9dca6ce5be26d82828c4627

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0cb4d84b878a23498e8795a748743ee9

            SHA1

            ff73bf96fbd7d7b72c48d5178578270b5b8f469c

            SHA256

            9f70632dc9fe9a7818a4c047221f34c528c5d0c2317ddfd93ead3049e1b014c4

            SHA512

            a933cae3b45c228739206cfb8cdd1a46de24ba899e30721cc47f417eb5746e1217effa7fed6b02a7e6606a52dd1f88be1196bd8e9e5e20a72ecc64d8de7d3157

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0cb4d84b878a23498e8795a748743ee9

            SHA1

            ff73bf96fbd7d7b72c48d5178578270b5b8f469c

            SHA256

            9f70632dc9fe9a7818a4c047221f34c528c5d0c2317ddfd93ead3049e1b014c4

            SHA512

            a933cae3b45c228739206cfb8cdd1a46de24ba899e30721cc47f417eb5746e1217effa7fed6b02a7e6606a52dd1f88be1196bd8e9e5e20a72ecc64d8de7d3157

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0ce1325eb59b5bb697ae03815b549f69

            SHA1

            6f78fb7291a17f43ab2b24d8e635c9e97c1d1406

            SHA256

            aaa3d3e7f04c95c6c0e31cc3e0dab0c5f9aab4860ecf6f056171106c4f6b0d8a

            SHA512

            c5a5e7ed366d14e739f8e260e404296fb2180963cf5128c5184dc6721b8f7bae5701f766bf0f030b32e7d116973a6817732735afd77dacfb8b7feaeb4b06c747

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0ce1325eb59b5bb697ae03815b549f69

            SHA1

            6f78fb7291a17f43ab2b24d8e635c9e97c1d1406

            SHA256

            aaa3d3e7f04c95c6c0e31cc3e0dab0c5f9aab4860ecf6f056171106c4f6b0d8a

            SHA512

            c5a5e7ed366d14e739f8e260e404296fb2180963cf5128c5184dc6721b8f7bae5701f766bf0f030b32e7d116973a6817732735afd77dacfb8b7feaeb4b06c747

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0ce1325eb59b5bb697ae03815b549f69

            SHA1

            6f78fb7291a17f43ab2b24d8e635c9e97c1d1406

            SHA256

            aaa3d3e7f04c95c6c0e31cc3e0dab0c5f9aab4860ecf6f056171106c4f6b0d8a

            SHA512

            c5a5e7ed366d14e739f8e260e404296fb2180963cf5128c5184dc6721b8f7bae5701f766bf0f030b32e7d116973a6817732735afd77dacfb8b7feaeb4b06c747

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            8f02c0eda5a241eb2595c51a1a10d838

            SHA1

            6d2a4b2a7dfabf0ddfd2559259d782617af58499

            SHA256

            ef901615fab75f11a71a0e20b8a07a274665e4bf3d36866ec0c7b64537a7a01a

            SHA512

            067157380118b81912dc89a434d2cf092bb8d47be4e7b32fffadf9136eece47e605eaac5eea436078cc70b852b5e82024c1617d0c6ec0e9ca6d4ce2231080c92

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            8f02c0eda5a241eb2595c51a1a10d838

            SHA1

            6d2a4b2a7dfabf0ddfd2559259d782617af58499

            SHA256

            ef901615fab75f11a71a0e20b8a07a274665e4bf3d36866ec0c7b64537a7a01a

            SHA512

            067157380118b81912dc89a434d2cf092bb8d47be4e7b32fffadf9136eece47e605eaac5eea436078cc70b852b5e82024c1617d0c6ec0e9ca6d4ce2231080c92

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            8f02c0eda5a241eb2595c51a1a10d838

            SHA1

            6d2a4b2a7dfabf0ddfd2559259d782617af58499

            SHA256

            ef901615fab75f11a71a0e20b8a07a274665e4bf3d36866ec0c7b64537a7a01a

            SHA512

            067157380118b81912dc89a434d2cf092bb8d47be4e7b32fffadf9136eece47e605eaac5eea436078cc70b852b5e82024c1617d0c6ec0e9ca6d4ce2231080c92

          • memory/228-165-0x0000000000000000-mapping.dmp

          • memory/964-135-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/964-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1960-140-0x0000000000000000-mapping.dmp

          • memory/2020-158-0x0000000000000000-mapping.dmp

          • memory/2228-136-0x0000000000000000-mapping.dmp

          • memory/2668-166-0x0000000000000000-mapping.dmp

          • memory/2852-153-0x0000000000000000-mapping.dmp

          • memory/3376-137-0x0000000000000000-mapping.dmp

          • memory/3664-147-0x0000000000000000-mapping.dmp

          • memory/4064-159-0x0000000000000000-mapping.dmp

          • memory/4780-142-0x0000000000000000-mapping.dmp

          • memory/4820-141-0x0000000000000000-mapping.dmp