Analysis

  • max time kernel
    47s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25/11/2022, 14:18

General

  • Target

    88ea34b66ef8b3f4d1ae860eaea7469e1ba33bea1f39ee39c52ec4dced3a5603.exe

  • Size

    562KB

  • MD5

    0bee61b164bfdb66c7d9dbe4d933fba3

  • SHA1

    b9f2fc3c64de19df34a390f009ec260bb1caf969

  • SHA256

    88ea34b66ef8b3f4d1ae860eaea7469e1ba33bea1f39ee39c52ec4dced3a5603

  • SHA512

    a893ff5bf54e7ba8b73ae05ac4e5fbbd6b05eb3d432d280261984366cb9d5b9a974fc9187c02b9c18237189a18ce40145e7448ab7914cf4acef975c8fdc3cb7d

  • SSDEEP

    12288:cPRYzJbfWrQA+M7sDGfs+Aa1U04udAj6ozKjXJK6RRvMD5v7Z:tz9fklsK0sUIoz4E6bE

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\88ea34b66ef8b3f4d1ae860eaea7469e1ba33bea1f39ee39c52ec4dced3a5603.exe
    "C:\Users\Admin\AppData\Local\Temp\88ea34b66ef8b3f4d1ae860eaea7469e1ba33bea1f39ee39c52ec4dced3a5603.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:960
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1376
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1676
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:564
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:592
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:432
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1524
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1724
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1948
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1812
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:968
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1796
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1816
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1856

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2899490be43e6b6b9d399f0b02c8b232

            SHA1

            8d822c55c4f801aa0785cf6b5d811a9ee653b31f

            SHA256

            71d1cba12893a8f24576eab234d2532bab1aa2ed19e25bbb4384de8f92fbceff

            SHA512

            2643aa24f3913c07727766cc892ebbfc041474749c1cc2b1dcc74f500e2a40adfe0934931d01078911f89c4f94b077ad6ec56401e6aa7f5ef06e086279980c5f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            81a6257f88c4f37ef871aa597ba628ac

            SHA1

            c7a5d731b4edd43cd53dcaa5221387ce2513a6fe

            SHA256

            26a92d4dd82ddac75308372001da498314f57ccdb21fd9cf149de667748ff214

            SHA512

            3b4323d613b7ca299a1f53b111d0ecaf6d405872768a49e73a98f16d25dcea34db64d932fa8f38d87c7adf0930654dc99ce31e37d2fcc6456ef8d55ab1d60a3f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            317ddaebe6d3203684db2c6952f99d43

            SHA1

            e1a8cf7336f7a5e2377f8cded5eaab4c63ef84c4

            SHA256

            ecbc333842853b9979bd1ab07d40a8ceb503caaf388767c829b3586180861bcf

            SHA512

            28ac6338f75b97bd52f643126ae0ad9896443fc9c8fed3a9ba43a343bb24f1ee7efc4d6dedc33888afe90d1e2139753c50a9bf370d7bbce84b3b125dc61d79d6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cb50073f2ef025dd0146859159a8aa19

            SHA1

            06a2dbc5a78bf6c29d958ea4c53cdef1b1ef8d48

            SHA256

            87376990ece72755cca09ae2ae220fe1f82ce00e3ff95f468ddb89219685c231

            SHA512

            32973508a08017a2f21c03a525004178d4166e2b024013fe4d6ce75c3c982854064842703e615813429085c5d013ab1e275fade63c7d28058ec0aaa7d2ac6af9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cb50073f2ef025dd0146859159a8aa19

            SHA1

            06a2dbc5a78bf6c29d958ea4c53cdef1b1ef8d48

            SHA256

            87376990ece72755cca09ae2ae220fe1f82ce00e3ff95f468ddb89219685c231

            SHA512

            32973508a08017a2f21c03a525004178d4166e2b024013fe4d6ce75c3c982854064842703e615813429085c5d013ab1e275fade63c7d28058ec0aaa7d2ac6af9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            de16fbc091dde34b7dd9b1a503c24ec2

            SHA1

            1289cc9c384f104f9b384585916350efe764866f

            SHA256

            ab9a207acf77a906e8f7b99b3e0b74f6645ba59ce7a0b32193c9883aa5c610af

            SHA512

            162c074bd438fbfb101773cfe53ad37b3a94c00b7e97c61a5d43c8f1c1daeb49eeb5698b8049b93f78116de8f3f7e9f1072a85d0cf0ecbc53562239d568ea0c6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            de16fbc091dde34b7dd9b1a503c24ec2

            SHA1

            1289cc9c384f104f9b384585916350efe764866f

            SHA256

            ab9a207acf77a906e8f7b99b3e0b74f6645ba59ce7a0b32193c9883aa5c610af

            SHA512

            162c074bd438fbfb101773cfe53ad37b3a94c00b7e97c61a5d43c8f1c1daeb49eeb5698b8049b93f78116de8f3f7e9f1072a85d0cf0ecbc53562239d568ea0c6

          • \Users\Admin\AppData\Local\Temp\nsyF8A4.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyF8A4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF8A4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF8A4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF8A4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2899490be43e6b6b9d399f0b02c8b232

            SHA1

            8d822c55c4f801aa0785cf6b5d811a9ee653b31f

            SHA256

            71d1cba12893a8f24576eab234d2532bab1aa2ed19e25bbb4384de8f92fbceff

            SHA512

            2643aa24f3913c07727766cc892ebbfc041474749c1cc2b1dcc74f500e2a40adfe0934931d01078911f89c4f94b077ad6ec56401e6aa7f5ef06e086279980c5f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2899490be43e6b6b9d399f0b02c8b232

            SHA1

            8d822c55c4f801aa0785cf6b5d811a9ee653b31f

            SHA256

            71d1cba12893a8f24576eab234d2532bab1aa2ed19e25bbb4384de8f92fbceff

            SHA512

            2643aa24f3913c07727766cc892ebbfc041474749c1cc2b1dcc74f500e2a40adfe0934931d01078911f89c4f94b077ad6ec56401e6aa7f5ef06e086279980c5f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2899490be43e6b6b9d399f0b02c8b232

            SHA1

            8d822c55c4f801aa0785cf6b5d811a9ee653b31f

            SHA256

            71d1cba12893a8f24576eab234d2532bab1aa2ed19e25bbb4384de8f92fbceff

            SHA512

            2643aa24f3913c07727766cc892ebbfc041474749c1cc2b1dcc74f500e2a40adfe0934931d01078911f89c4f94b077ad6ec56401e6aa7f5ef06e086279980c5f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            81a6257f88c4f37ef871aa597ba628ac

            SHA1

            c7a5d731b4edd43cd53dcaa5221387ce2513a6fe

            SHA256

            26a92d4dd82ddac75308372001da498314f57ccdb21fd9cf149de667748ff214

            SHA512

            3b4323d613b7ca299a1f53b111d0ecaf6d405872768a49e73a98f16d25dcea34db64d932fa8f38d87c7adf0930654dc99ce31e37d2fcc6456ef8d55ab1d60a3f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            81a6257f88c4f37ef871aa597ba628ac

            SHA1

            c7a5d731b4edd43cd53dcaa5221387ce2513a6fe

            SHA256

            26a92d4dd82ddac75308372001da498314f57ccdb21fd9cf149de667748ff214

            SHA512

            3b4323d613b7ca299a1f53b111d0ecaf6d405872768a49e73a98f16d25dcea34db64d932fa8f38d87c7adf0930654dc99ce31e37d2fcc6456ef8d55ab1d60a3f

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            317ddaebe6d3203684db2c6952f99d43

            SHA1

            e1a8cf7336f7a5e2377f8cded5eaab4c63ef84c4

            SHA256

            ecbc333842853b9979bd1ab07d40a8ceb503caaf388767c829b3586180861bcf

            SHA512

            28ac6338f75b97bd52f643126ae0ad9896443fc9c8fed3a9ba43a343bb24f1ee7efc4d6dedc33888afe90d1e2139753c50a9bf370d7bbce84b3b125dc61d79d6

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cb50073f2ef025dd0146859159a8aa19

            SHA1

            06a2dbc5a78bf6c29d958ea4c53cdef1b1ef8d48

            SHA256

            87376990ece72755cca09ae2ae220fe1f82ce00e3ff95f468ddb89219685c231

            SHA512

            32973508a08017a2f21c03a525004178d4166e2b024013fe4d6ce75c3c982854064842703e615813429085c5d013ab1e275fade63c7d28058ec0aaa7d2ac6af9

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            de16fbc091dde34b7dd9b1a503c24ec2

            SHA1

            1289cc9c384f104f9b384585916350efe764866f

            SHA256

            ab9a207acf77a906e8f7b99b3e0b74f6645ba59ce7a0b32193c9883aa5c610af

            SHA512

            162c074bd438fbfb101773cfe53ad37b3a94c00b7e97c61a5d43c8f1c1daeb49eeb5698b8049b93f78116de8f3f7e9f1072a85d0cf0ecbc53562239d568ea0c6

          • memory/960-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/960-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/960-54-0x00000000757A1000-0x00000000757A3000-memory.dmp

            Filesize

            8KB