Analysis

  • max time kernel
    153s
  • max time network
    168s
  • 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 10:14

General

  • Target

    b4e0ec526da7a795e53abc8bf3db581d72348ce71372f5b1c1d5b309c3690f29.exe

  • Size

    603KB

  • MD5

    d80dbea8dcf4e971fecae5442a42d838

  • SHA1

    b5aa149a5de61f9af67f2e0843abd23e9aa8a4fb

  • SHA256

    b4e0ec526da7a795e53abc8bf3db581d72348ce71372f5b1c1d5b309c3690f29

  • SHA512

    4ba6836d092c712a91a1d8890290c41a10af6ffa4b6391344991bfdef009b6ca1eac575240dcb09c9f217edb6575875485372d8cc076b1a1014b9f2d3cfc3fef

  • SSDEEP

    12288:SIny5DYTfImpJDSwhS4yJmzieDyKecSt7Sn4YkW7D:UUTf1fHykWeD1wpw

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\b4e0ec526da7a795e53abc8bf3db581d72348ce71372f5b1c1d5b309c3690f29.exe
    "C:\Users\Admin\AppData\Local\Temp\b4e0ec526da7a795e53abc8bf3db581d72348ce71372f5b1c1d5b309c3690f29.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:4116
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4880
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:652
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:820
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3280
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3916
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1620
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3260
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3872
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1648
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3684
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3788
          • 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:5036
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:628

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswBF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            88fe9d6f2f4fe8ae2f0fbd37684014a6

            SHA1

            04b95b5e1fe7795951d742a728f16f497be421e4

            SHA256

            38a69e1b18156b212545ad6e7b16e03651dcd984267eb9a084bbc8077ea9c8ba

            SHA512

            d4535cb3c986aff13a95d2b5c6ab22bbde6a9d61c452e2ff23a4ccea2c297801035cc56ea9894328c02dc96c6003725c5f59e77ebb2305fe7b29a3b4e6b9848a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            88fe9d6f2f4fe8ae2f0fbd37684014a6

            SHA1

            04b95b5e1fe7795951d742a728f16f497be421e4

            SHA256

            38a69e1b18156b212545ad6e7b16e03651dcd984267eb9a084bbc8077ea9c8ba

            SHA512

            d4535cb3c986aff13a95d2b5c6ab22bbde6a9d61c452e2ff23a4ccea2c297801035cc56ea9894328c02dc96c6003725c5f59e77ebb2305fe7b29a3b4e6b9848a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            88fe9d6f2f4fe8ae2f0fbd37684014a6

            SHA1

            04b95b5e1fe7795951d742a728f16f497be421e4

            SHA256

            38a69e1b18156b212545ad6e7b16e03651dcd984267eb9a084bbc8077ea9c8ba

            SHA512

            d4535cb3c986aff13a95d2b5c6ab22bbde6a9d61c452e2ff23a4ccea2c297801035cc56ea9894328c02dc96c6003725c5f59e77ebb2305fe7b29a3b4e6b9848a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            88fe9d6f2f4fe8ae2f0fbd37684014a6

            SHA1

            04b95b5e1fe7795951d742a728f16f497be421e4

            SHA256

            38a69e1b18156b212545ad6e7b16e03651dcd984267eb9a084bbc8077ea9c8ba

            SHA512

            d4535cb3c986aff13a95d2b5c6ab22bbde6a9d61c452e2ff23a4ccea2c297801035cc56ea9894328c02dc96c6003725c5f59e77ebb2305fe7b29a3b4e6b9848a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f35d37d8f9cfe8774aa4298fb3ad359f

            SHA1

            78cd2caba472fc49f7dcfa19e9fd600c8c7e6953

            SHA256

            567828250c20254b2d1533ac9f4e777953eac8f6e4f1e399f0eef347f8bf17c2

            SHA512

            906f26eeb7f7f0b62c67795bd0428d7be64da857f5500f1f9944f04b815e9379058c9be3c1ddc52e85e439e8f8b01f5086f6e177d326553b748a7dea46ef9490

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f35d37d8f9cfe8774aa4298fb3ad359f

            SHA1

            78cd2caba472fc49f7dcfa19e9fd600c8c7e6953

            SHA256

            567828250c20254b2d1533ac9f4e777953eac8f6e4f1e399f0eef347f8bf17c2

            SHA512

            906f26eeb7f7f0b62c67795bd0428d7be64da857f5500f1f9944f04b815e9379058c9be3c1ddc52e85e439e8f8b01f5086f6e177d326553b748a7dea46ef9490

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f35d37d8f9cfe8774aa4298fb3ad359f

            SHA1

            78cd2caba472fc49f7dcfa19e9fd600c8c7e6953

            SHA256

            567828250c20254b2d1533ac9f4e777953eac8f6e4f1e399f0eef347f8bf17c2

            SHA512

            906f26eeb7f7f0b62c67795bd0428d7be64da857f5500f1f9944f04b815e9379058c9be3c1ddc52e85e439e8f8b01f5086f6e177d326553b748a7dea46ef9490

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            dbba85ab015e9a9415dd9710413f78e7

            SHA1

            3777267cb5eb2558c8ec5f08fba36a25a6c3bf10

            SHA256

            a2797702ab45703351044adda82e314566d6ec36380d51ed94855c2c63a72511

            SHA512

            e2886432d12adb0386ce329281b73018ff612fd6f93067561ada8c8ba2b300c69c91b49a078c3c599c2fa6ab34f09669274b8ca10f2ddbad2dc8e2f00bb11d9f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            dbba85ab015e9a9415dd9710413f78e7

            SHA1

            3777267cb5eb2558c8ec5f08fba36a25a6c3bf10

            SHA256

            a2797702ab45703351044adda82e314566d6ec36380d51ed94855c2c63a72511

            SHA512

            e2886432d12adb0386ce329281b73018ff612fd6f93067561ada8c8ba2b300c69c91b49a078c3c599c2fa6ab34f09669274b8ca10f2ddbad2dc8e2f00bb11d9f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f8202d0289e5a5fcec415a8a6b2addde

            SHA1

            b33ae998fc9a63514166176b2d25b2a4fff84afd

            SHA256

            c8c20dae54ce61c7dae2e77d5cda65a38d25b19b40764c7decc84b0aaf54a380

            SHA512

            317ab46e35d810473aff701da1e34ee7cf8e3e1b50f236467b9355cf6f2cdb507e38fda834480763160b3ec652e9b6193d848fcded2c1f6e9b16166078196f1e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f8202d0289e5a5fcec415a8a6b2addde

            SHA1

            b33ae998fc9a63514166176b2d25b2a4fff84afd

            SHA256

            c8c20dae54ce61c7dae2e77d5cda65a38d25b19b40764c7decc84b0aaf54a380

            SHA512

            317ab46e35d810473aff701da1e34ee7cf8e3e1b50f236467b9355cf6f2cdb507e38fda834480763160b3ec652e9b6193d848fcded2c1f6e9b16166078196f1e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f8202d0289e5a5fcec415a8a6b2addde

            SHA1

            b33ae998fc9a63514166176b2d25b2a4fff84afd

            SHA256

            c8c20dae54ce61c7dae2e77d5cda65a38d25b19b40764c7decc84b0aaf54a380

            SHA512

            317ab46e35d810473aff701da1e34ee7cf8e3e1b50f236467b9355cf6f2cdb507e38fda834480763160b3ec652e9b6193d848fcded2c1f6e9b16166078196f1e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            ab1fcdf49fe14d6c4cc9c21f73879619

            SHA1

            08db04e4b4e68c36e12fa786776a9c2541594552

            SHA256

            2a68b09d9625740e527b937e377ac3ec5c68c9f3dd336c768654388ed3607eed

            SHA512

            f12fbbf55083c9bc956f3d89e7a8a568007c4e755775648c010ff9d7cb4016917c60d7929302b58ec66193e01f0dd0274398d6f2fadd51c339929082592dc7d7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            ab1fcdf49fe14d6c4cc9c21f73879619

            SHA1

            08db04e4b4e68c36e12fa786776a9c2541594552

            SHA256

            2a68b09d9625740e527b937e377ac3ec5c68c9f3dd336c768654388ed3607eed

            SHA512

            f12fbbf55083c9bc956f3d89e7a8a568007c4e755775648c010ff9d7cb4016917c60d7929302b58ec66193e01f0dd0274398d6f2fadd51c339929082592dc7d7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            ab1fcdf49fe14d6c4cc9c21f73879619

            SHA1

            08db04e4b4e68c36e12fa786776a9c2541594552

            SHA256

            2a68b09d9625740e527b937e377ac3ec5c68c9f3dd336c768654388ed3607eed

            SHA512

            f12fbbf55083c9bc956f3d89e7a8a568007c4e755775648c010ff9d7cb4016917c60d7929302b58ec66193e01f0dd0274398d6f2fadd51c339929082592dc7d7

          • memory/652-137-0x0000000000000000-mapping.dmp

          • memory/820-140-0x0000000000000000-mapping.dmp

          • memory/1620-147-0x0000000000000000-mapping.dmp

          • memory/1648-159-0x0000000000000000-mapping.dmp

          • memory/3260-153-0x0000000000000000-mapping.dmp

          • memory/3280-141-0x0000000000000000-mapping.dmp

          • memory/3684-165-0x0000000000000000-mapping.dmp

          • memory/3788-166-0x0000000000000000-mapping.dmp

          • memory/3872-158-0x0000000000000000-mapping.dmp

          • memory/3916-142-0x0000000000000000-mapping.dmp

          • memory/4116-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4116-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4880-136-0x0000000000000000-mapping.dmp