Analysis

  • max time kernel
    32s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:24

General

  • Target

    67443ca1a77b4b4ef0d66b96f2a94e004d1b22e12c3a53f7455444e3620edd30.exe

  • Size

    603KB

  • MD5

    12e8a34879443a3a289f5ac2cac96182

  • SHA1

    fa724c6af7b696de1aa934eac1c55b56b0bfbef5

  • SHA256

    67443ca1a77b4b4ef0d66b96f2a94e004d1b22e12c3a53f7455444e3620edd30

  • SHA512

    91c5ecc4762167763d821a048570b16788c8e5e266ac3997f42a694aedf206b7a85cf7350316a6abe9232a5b4193c597354f4a7997e9b4b1f0553288558d7e20

  • SSDEEP

    12288:QIny5DYTfQn8aXZ45s0zg9/3Jk4LH8QtFMROsctviRuXrKsjYJK0uu8nnOh:uUTgK5j8/5k4D1ck3vcubKsjO5qO

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\67443ca1a77b4b4ef0d66b96f2a94e004d1b22e12c3a53f7455444e3620edd30.exe
    "C:\Users\Admin\AppData\Local\Temp\67443ca1a77b4b4ef0d66b96f2a94e004d1b22e12c3a53f7455444e3620edd30.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:684
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1320
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:952
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1128
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2036
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:948
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1172
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1624
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1156
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1744
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1736
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1608
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1772
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1420

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9af4cf9d743f8c600c0174d6cc3f595e

            SHA1

            6c700b97c4581dc485c65522ec002e3844fdc208

            SHA256

            8ae493db9da22933c1d11f34563b1fd271fdf471971a77a7564b474028a6d875

            SHA512

            431fda9e9d021cd387c7306b5bac669a0c3317fbc0357c1c850c567e988436098a7635c07ce09d03174908fc2931ee74c4ef8bf513bf879fff6ed1136208bad1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e2df07ae6ebe804cca259ece7f7ec708

            SHA1

            fa92d34dc6b0ff7ea67cd17815c2589be4e6f008

            SHA256

            56a99386d1a4a280344137d8ae68b9ef0b220c2cd36fcc41f71f83768a2de023

            SHA512

            fa3f12974115040671b41869063bad9c052973ac369c394a4c2c124ee2ac9f419b933b5a875d6a233c520388592ac0daa3adf01ae7f42528f5feff6d8164a8bc

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ac6c3e37e052da4188fc7fdbace05abc

            SHA1

            8aca78de45dc5fcb2c3214393fa3b3ea3bb4ba76

            SHA256

            9815805b043dd2769ea96ddff3cabe47193e1a508ff252a07f3c9db46c23fabe

            SHA512

            c3499f338b54f674d399d022eea3354b21c098533cda0bc3773b7f0bccce3d270d074e9949f8ed4ee2c248606fb900869d98023828e3df8b0a7cdc64becdb781

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            061a0303c6f391c523d0b4a47eb119bb

            SHA1

            2618aa753bf6ef3bf22b19dde6807e3570628942

            SHA256

            793d00a53634a72dac08284810261a072d5f5441be78ccee0adaa36ed4082e8a

            SHA512

            45dd250d38d1e8e138d8bacb6094beb5c737f072d37844954daf087dd4c8746a0adbda9bba1ed2e940b5b5a3361ded69a02d6693e63119fa6a4d6062a41a04fd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            061a0303c6f391c523d0b4a47eb119bb

            SHA1

            2618aa753bf6ef3bf22b19dde6807e3570628942

            SHA256

            793d00a53634a72dac08284810261a072d5f5441be78ccee0adaa36ed4082e8a

            SHA512

            45dd250d38d1e8e138d8bacb6094beb5c737f072d37844954daf087dd4c8746a0adbda9bba1ed2e940b5b5a3361ded69a02d6693e63119fa6a4d6062a41a04fd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2a9735a0d8e8847785093b0b306bd814

            SHA1

            baed8671b385ca31adaedf28664b7fd25d066b18

            SHA256

            382cc80b8044cea846678c172de105b50a3c76d3dcfefc81285254b8e7e109ca

            SHA512

            7c2a712a94262d4813c0d82fd2919c15a6d6b35cc3d9eaa3c80c13e38f6615c369a326cefc7e563d4d1fefbbdef99899b4b752d3827983595a0df0624b14f1a8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2a9735a0d8e8847785093b0b306bd814

            SHA1

            baed8671b385ca31adaedf28664b7fd25d066b18

            SHA256

            382cc80b8044cea846678c172de105b50a3c76d3dcfefc81285254b8e7e109ca

            SHA512

            7c2a712a94262d4813c0d82fd2919c15a6d6b35cc3d9eaa3c80c13e38f6615c369a326cefc7e563d4d1fefbbdef99899b4b752d3827983595a0df0624b14f1a8

          • \Users\Admin\AppData\Local\Temp\nso20EC.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso20EC.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso20EC.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso20EC.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso20EC.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9af4cf9d743f8c600c0174d6cc3f595e

            SHA1

            6c700b97c4581dc485c65522ec002e3844fdc208

            SHA256

            8ae493db9da22933c1d11f34563b1fd271fdf471971a77a7564b474028a6d875

            SHA512

            431fda9e9d021cd387c7306b5bac669a0c3317fbc0357c1c850c567e988436098a7635c07ce09d03174908fc2931ee74c4ef8bf513bf879fff6ed1136208bad1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9af4cf9d743f8c600c0174d6cc3f595e

            SHA1

            6c700b97c4581dc485c65522ec002e3844fdc208

            SHA256

            8ae493db9da22933c1d11f34563b1fd271fdf471971a77a7564b474028a6d875

            SHA512

            431fda9e9d021cd387c7306b5bac669a0c3317fbc0357c1c850c567e988436098a7635c07ce09d03174908fc2931ee74c4ef8bf513bf879fff6ed1136208bad1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9af4cf9d743f8c600c0174d6cc3f595e

            SHA1

            6c700b97c4581dc485c65522ec002e3844fdc208

            SHA256

            8ae493db9da22933c1d11f34563b1fd271fdf471971a77a7564b474028a6d875

            SHA512

            431fda9e9d021cd387c7306b5bac669a0c3317fbc0357c1c850c567e988436098a7635c07ce09d03174908fc2931ee74c4ef8bf513bf879fff6ed1136208bad1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e2df07ae6ebe804cca259ece7f7ec708

            SHA1

            fa92d34dc6b0ff7ea67cd17815c2589be4e6f008

            SHA256

            56a99386d1a4a280344137d8ae68b9ef0b220c2cd36fcc41f71f83768a2de023

            SHA512

            fa3f12974115040671b41869063bad9c052973ac369c394a4c2c124ee2ac9f419b933b5a875d6a233c520388592ac0daa3adf01ae7f42528f5feff6d8164a8bc

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e2df07ae6ebe804cca259ece7f7ec708

            SHA1

            fa92d34dc6b0ff7ea67cd17815c2589be4e6f008

            SHA256

            56a99386d1a4a280344137d8ae68b9ef0b220c2cd36fcc41f71f83768a2de023

            SHA512

            fa3f12974115040671b41869063bad9c052973ac369c394a4c2c124ee2ac9f419b933b5a875d6a233c520388592ac0daa3adf01ae7f42528f5feff6d8164a8bc

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ac6c3e37e052da4188fc7fdbace05abc

            SHA1

            8aca78de45dc5fcb2c3214393fa3b3ea3bb4ba76

            SHA256

            9815805b043dd2769ea96ddff3cabe47193e1a508ff252a07f3c9db46c23fabe

            SHA512

            c3499f338b54f674d399d022eea3354b21c098533cda0bc3773b7f0bccce3d270d074e9949f8ed4ee2c248606fb900869d98023828e3df8b0a7cdc64becdb781

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            061a0303c6f391c523d0b4a47eb119bb

            SHA1

            2618aa753bf6ef3bf22b19dde6807e3570628942

            SHA256

            793d00a53634a72dac08284810261a072d5f5441be78ccee0adaa36ed4082e8a

            SHA512

            45dd250d38d1e8e138d8bacb6094beb5c737f072d37844954daf087dd4c8746a0adbda9bba1ed2e940b5b5a3361ded69a02d6693e63119fa6a4d6062a41a04fd

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2a9735a0d8e8847785093b0b306bd814

            SHA1

            baed8671b385ca31adaedf28664b7fd25d066b18

            SHA256

            382cc80b8044cea846678c172de105b50a3c76d3dcfefc81285254b8e7e109ca

            SHA512

            7c2a712a94262d4813c0d82fd2919c15a6d6b35cc3d9eaa3c80c13e38f6615c369a326cefc7e563d4d1fefbbdef99899b4b752d3827983595a0df0624b14f1a8

          • memory/684-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/684-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/684-54-0x0000000075071000-0x0000000075073000-memory.dmp

            Filesize

            8KB

          • memory/948-64-0x0000000000000000-mapping.dmp

          • memory/952-58-0x0000000000000000-mapping.dmp

          • memory/1128-61-0x0000000000000000-mapping.dmp

          • memory/1156-80-0x0000000000000000-mapping.dmp

          • memory/1172-70-0x0000000000000000-mapping.dmp

          • memory/1320-57-0x0000000000000000-mapping.dmp

          • memory/1608-87-0x0000000000000000-mapping.dmp

          • memory/1624-76-0x0000000000000000-mapping.dmp

          • memory/1736-86-0x0000000000000000-mapping.dmp

          • memory/1744-81-0x0000000000000000-mapping.dmp

          • memory/2036-62-0x0000000000000000-mapping.dmp