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 10:15

General

  • Target

    af54048ea7e284421e650bd56f839de41be865ef526c91ac0ad1594370a2db32.exe

  • Size

    603KB

  • MD5

    af5fa66ceb1e86ea1965ca3523e101f4

  • SHA1

    426563e5222f06584d72fdc1ba79f30889e4f1bf

  • SHA256

    af54048ea7e284421e650bd56f839de41be865ef526c91ac0ad1594370a2db32

  • SHA512

    9bdc2488efaba65afd78f1fb217d591401d2d17348d5f20f1074dc9596b2799ea26417d824a4bc012204352da5326c22708bee71027d54bfc6d8c804a89cfbec

  • SSDEEP

    12288:mIny5DYT9d4F7ARGIpow4grFdVKqTpY6/MNFF6B:IUT9OFoGIpow4grFdcqTqvy

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\af54048ea7e284421e650bd56f839de41be865ef526c91ac0ad1594370a2db32.exe
    "C:\Users\Admin\AppData\Local\Temp\af54048ea7e284421e650bd56f839de41be865ef526c91ac0ad1594370a2db32.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:548
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1976
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2020
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:956
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1980
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:632
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1196
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:608
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:556
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:588
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1972
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1456
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1920

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ec5482397c9bf1003cb603711e108261

            SHA1

            4a6b1abf5072829b41e860bd72578dbc4c1fddcf

            SHA256

            cb70856f95946101b29ac4e83b5c6f6ed1260c0cfb0cd2535eb6597d2135f0f5

            SHA512

            1c2c33bd9337b17b71451f053c40742032373a88725165bec245296b7e7a7891681f559e1cb224151275a8e4e6a180a6d1ce904a42b0e82607f88e4f170205ab

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cfc5e4290776d52bc70c3909f5fcc4e9

            SHA1

            fbd4c1816ed66f25cfce26e730227740141a4f7f

            SHA256

            d97178555fa15d53706608dd57765fc3f9e36a19c12a22856110163477623ffb

            SHA512

            ba54b8b07f3cf84a1ad31236897e23867edef98842372e017e3c02a647c4024b0ebce2f5876f47bade44283b8cb71370c3e1b737f82a3cf1abc8eb881633d7fe

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3dc1e80d9e3f678d7c1286988a99789a

            SHA1

            9a72032ac39e680eb6fbf5544e5a3295077c9414

            SHA256

            01174a5c3753f8c8d1648301cfe95f646085cb0fc4cd20ade15605f837f2697e

            SHA512

            c3db93bda8d7da221b20360946bd673aaa7210f6e982fe60e77adeb560f351ec39915a6406e5b5e3beee7b46c6e7659bdf9068e9effcc50ee7382377ddf2918d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2e76e1aadb561bab4a3096a7c286c76b

            SHA1

            d554e0584ad157f6304539c6d9b1d820af7197d7

            SHA256

            11ceea37f438746abb0d8508c95ca87115afa2e1213c07065e3bc91aa83332b1

            SHA512

            0d848f185180948b87245d7f9bce3e2f66a2f94ae7cb88740ff1fd1bb49595caa1e2b26c92819fa16051049809bab77d4a78036ec67ad473967e88af49ebfd15

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2e76e1aadb561bab4a3096a7c286c76b

            SHA1

            d554e0584ad157f6304539c6d9b1d820af7197d7

            SHA256

            11ceea37f438746abb0d8508c95ca87115afa2e1213c07065e3bc91aa83332b1

            SHA512

            0d848f185180948b87245d7f9bce3e2f66a2f94ae7cb88740ff1fd1bb49595caa1e2b26c92819fa16051049809bab77d4a78036ec67ad473967e88af49ebfd15

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f048402d330059a9bce43b16311e50f8

            SHA1

            c282649590a22dfb5d25dd65e27aa607c3e9ac23

            SHA256

            da8c11e7ebbce26a3417f33b86a6858ae29aa3601383de4c106dcb0c55a75d26

            SHA512

            e125fdf80a4fc298a63e5e8641601823c41e29cd2d2b8c81c01356116002378af81ca2607b0f87d17972485e9016e24e8a30d2f9b21d23eebe39cbeb406f5458

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f048402d330059a9bce43b16311e50f8

            SHA1

            c282649590a22dfb5d25dd65e27aa607c3e9ac23

            SHA256

            da8c11e7ebbce26a3417f33b86a6858ae29aa3601383de4c106dcb0c55a75d26

            SHA512

            e125fdf80a4fc298a63e5e8641601823c41e29cd2d2b8c81c01356116002378af81ca2607b0f87d17972485e9016e24e8a30d2f9b21d23eebe39cbeb406f5458

          • \Users\Admin\AppData\Local\Temp\nsd55B1.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd55B1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd55B1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd55B1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd55B1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ec5482397c9bf1003cb603711e108261

            SHA1

            4a6b1abf5072829b41e860bd72578dbc4c1fddcf

            SHA256

            cb70856f95946101b29ac4e83b5c6f6ed1260c0cfb0cd2535eb6597d2135f0f5

            SHA512

            1c2c33bd9337b17b71451f053c40742032373a88725165bec245296b7e7a7891681f559e1cb224151275a8e4e6a180a6d1ce904a42b0e82607f88e4f170205ab

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ec5482397c9bf1003cb603711e108261

            SHA1

            4a6b1abf5072829b41e860bd72578dbc4c1fddcf

            SHA256

            cb70856f95946101b29ac4e83b5c6f6ed1260c0cfb0cd2535eb6597d2135f0f5

            SHA512

            1c2c33bd9337b17b71451f053c40742032373a88725165bec245296b7e7a7891681f559e1cb224151275a8e4e6a180a6d1ce904a42b0e82607f88e4f170205ab

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ec5482397c9bf1003cb603711e108261

            SHA1

            4a6b1abf5072829b41e860bd72578dbc4c1fddcf

            SHA256

            cb70856f95946101b29ac4e83b5c6f6ed1260c0cfb0cd2535eb6597d2135f0f5

            SHA512

            1c2c33bd9337b17b71451f053c40742032373a88725165bec245296b7e7a7891681f559e1cb224151275a8e4e6a180a6d1ce904a42b0e82607f88e4f170205ab

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cfc5e4290776d52bc70c3909f5fcc4e9

            SHA1

            fbd4c1816ed66f25cfce26e730227740141a4f7f

            SHA256

            d97178555fa15d53706608dd57765fc3f9e36a19c12a22856110163477623ffb

            SHA512

            ba54b8b07f3cf84a1ad31236897e23867edef98842372e017e3c02a647c4024b0ebce2f5876f47bade44283b8cb71370c3e1b737f82a3cf1abc8eb881633d7fe

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cfc5e4290776d52bc70c3909f5fcc4e9

            SHA1

            fbd4c1816ed66f25cfce26e730227740141a4f7f

            SHA256

            d97178555fa15d53706608dd57765fc3f9e36a19c12a22856110163477623ffb

            SHA512

            ba54b8b07f3cf84a1ad31236897e23867edef98842372e017e3c02a647c4024b0ebce2f5876f47bade44283b8cb71370c3e1b737f82a3cf1abc8eb881633d7fe

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3dc1e80d9e3f678d7c1286988a99789a

            SHA1

            9a72032ac39e680eb6fbf5544e5a3295077c9414

            SHA256

            01174a5c3753f8c8d1648301cfe95f646085cb0fc4cd20ade15605f837f2697e

            SHA512

            c3db93bda8d7da221b20360946bd673aaa7210f6e982fe60e77adeb560f351ec39915a6406e5b5e3beee7b46c6e7659bdf9068e9effcc50ee7382377ddf2918d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2e76e1aadb561bab4a3096a7c286c76b

            SHA1

            d554e0584ad157f6304539c6d9b1d820af7197d7

            SHA256

            11ceea37f438746abb0d8508c95ca87115afa2e1213c07065e3bc91aa83332b1

            SHA512

            0d848f185180948b87245d7f9bce3e2f66a2f94ae7cb88740ff1fd1bb49595caa1e2b26c92819fa16051049809bab77d4a78036ec67ad473967e88af49ebfd15

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f048402d330059a9bce43b16311e50f8

            SHA1

            c282649590a22dfb5d25dd65e27aa607c3e9ac23

            SHA256

            da8c11e7ebbce26a3417f33b86a6858ae29aa3601383de4c106dcb0c55a75d26

            SHA512

            e125fdf80a4fc298a63e5e8641601823c41e29cd2d2b8c81c01356116002378af81ca2607b0f87d17972485e9016e24e8a30d2f9b21d23eebe39cbeb406f5458

          • memory/548-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/548-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/548-54-0x0000000076831000-0x0000000076833000-memory.dmp

            Filesize

            8KB

          • memory/556-81-0x0000000000000000-mapping.dmp

          • memory/588-86-0x0000000000000000-mapping.dmp

          • memory/608-80-0x0000000000000000-mapping.dmp

          • memory/632-70-0x0000000000000000-mapping.dmp

          • memory/956-61-0x0000000000000000-mapping.dmp

          • memory/1196-76-0x0000000000000000-mapping.dmp

          • memory/1972-87-0x0000000000000000-mapping.dmp

          • memory/1976-57-0x0000000000000000-mapping.dmp

          • memory/1980-64-0x0000000000000000-mapping.dmp

          • memory/2020-58-0x0000000000000000-mapping.dmp

          • memory/2040-60-0x0000000000000000-mapping.dmp