Analysis

  • max time kernel
    118s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:26

General

  • Target

    4d5378fb5d9e9789b5a22e50464e91ccceb0aff602fc2f3a72c0b386ea65d4c2.exe

  • Size

    603KB

  • MD5

    07cad42a6547c62394fd99f7e764c2e4

  • SHA1

    00191aac3d5d86cc60cf1f0d621895f9a9b4759a

  • SHA256

    4d5378fb5d9e9789b5a22e50464e91ccceb0aff602fc2f3a72c0b386ea65d4c2

  • SHA512

    35f7623d69930c3ef8c9efee43b2ccaaa2d0e4446228310d86047d4c434de3c28c634fdbfacea3c7f3de34516be158a21f4bcc34800c688e79ef021305ccef27

  • SSDEEP

    12288:7Iny5DYTQI0ccMP6OJXC9ai0a5hZh3drvSHmW7hnO9U:DUTQrdC692aHZhtvSGYh

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\4d5378fb5d9e9789b5a22e50464e91ccceb0aff602fc2f3a72c0b386ea65d4c2.exe
    "C:\Users\Admin\AppData\Local\Temp\4d5378fb5d9e9789b5a22e50464e91ccceb0aff602fc2f3a72c0b386ea65d4c2.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:1512
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:580
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:636
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:268
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1468
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1740
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1696
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1728
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1396
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1960
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1336
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:772
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1660
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2012

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            15518d7861a2a94fbf0f70efc3a42637

            SHA1

            22b568f3a6c5c3175e6423aa4930ebbd04a130c1

            SHA256

            d6a76101c935316e9730a6ab1b8f6eca262a1f236a3a13003af9d6e6c3ccdc58

            SHA512

            862f88926dae9c6725a4f92f8f5ca609c80c2dde13f4409c2a692eacdf61fcdc2a7b8516c1198b1596ec78f457fda8a34acc8874939f01b442222e88e6ec20a1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c7c7175f728113c5110e27576dd38002

            SHA1

            f0bc0e28b7eac19744b6be0fd5441646a9a64ccb

            SHA256

            32cde8cc475cb71b4b9214f10ab660083d60cf57e92be0694c6a397b8538af75

            SHA512

            903c1f8bf3a07925564ccb66460fcd3055d729181fcfdac065b5a709be8cd1418755b240cc53239ee2e58aa2ade35ebde614796c5e7efd02dec8bd967a73d1e3

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            aec102dbfe62df311779c23d0a2e5f65

            SHA1

            309e8f3aaae122e81a4288ff263dee7158697f84

            SHA256

            806d75982dc43e48d5a0f8a0243b3eaa864521cf1bed794c91f925791ab38d5f

            SHA512

            8a048e99f78e261da29cf6fa284ee5eaedee3bbb7021370b0a38f8d9d43016ae3457f264dd8632a065f8a5defcfe9c5a7c206c47467032ac657c8bf7f4d8750f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            41ed4817c3f5c88123fe73c7f70732df

            SHA1

            2241b01428435f2337bc9dfec8f3bd35a0e1811f

            SHA256

            2db46ca4733940f15b0ac746a94e5780b3c2314c3a5869d669c8010543a0c1c8

            SHA512

            158bc35482cd2ff624a16aa1e23c61e18028cf168e9acab7491cc8859a829fa651d12306c1db44baa28b61e48b16ea43dc2dd387d0c1e7af2d71124ed8ff497e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            41ed4817c3f5c88123fe73c7f70732df

            SHA1

            2241b01428435f2337bc9dfec8f3bd35a0e1811f

            SHA256

            2db46ca4733940f15b0ac746a94e5780b3c2314c3a5869d669c8010543a0c1c8

            SHA512

            158bc35482cd2ff624a16aa1e23c61e18028cf168e9acab7491cc8859a829fa651d12306c1db44baa28b61e48b16ea43dc2dd387d0c1e7af2d71124ed8ff497e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4013812b3b7235110c00a29c43a1cab4

            SHA1

            eca14b3ae90cd471c959569e41843ac3f2321d50

            SHA256

            559b3001a8d86bc9cb803b70820b6d64104c0b74651af1e3e8018ce61aba1e8a

            SHA512

            06ce754c53aa1ce79c611a40cc579ef6db03f6b8a8f0f7994292aeb6e75073b9944d3f12d9c2d1e38594ba6563f452550beb4d193ab980538a8cd040e7d3a07a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4013812b3b7235110c00a29c43a1cab4

            SHA1

            eca14b3ae90cd471c959569e41843ac3f2321d50

            SHA256

            559b3001a8d86bc9cb803b70820b6d64104c0b74651af1e3e8018ce61aba1e8a

            SHA512

            06ce754c53aa1ce79c611a40cc579ef6db03f6b8a8f0f7994292aeb6e75073b9944d3f12d9c2d1e38594ba6563f452550beb4d193ab980538a8cd040e7d3a07a

          • \Users\Admin\AppData\Local\Temp\nstE801.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstE801.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE801.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE801.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE801.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            15518d7861a2a94fbf0f70efc3a42637

            SHA1

            22b568f3a6c5c3175e6423aa4930ebbd04a130c1

            SHA256

            d6a76101c935316e9730a6ab1b8f6eca262a1f236a3a13003af9d6e6c3ccdc58

            SHA512

            862f88926dae9c6725a4f92f8f5ca609c80c2dde13f4409c2a692eacdf61fcdc2a7b8516c1198b1596ec78f457fda8a34acc8874939f01b442222e88e6ec20a1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            15518d7861a2a94fbf0f70efc3a42637

            SHA1

            22b568f3a6c5c3175e6423aa4930ebbd04a130c1

            SHA256

            d6a76101c935316e9730a6ab1b8f6eca262a1f236a3a13003af9d6e6c3ccdc58

            SHA512

            862f88926dae9c6725a4f92f8f5ca609c80c2dde13f4409c2a692eacdf61fcdc2a7b8516c1198b1596ec78f457fda8a34acc8874939f01b442222e88e6ec20a1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            15518d7861a2a94fbf0f70efc3a42637

            SHA1

            22b568f3a6c5c3175e6423aa4930ebbd04a130c1

            SHA256

            d6a76101c935316e9730a6ab1b8f6eca262a1f236a3a13003af9d6e6c3ccdc58

            SHA512

            862f88926dae9c6725a4f92f8f5ca609c80c2dde13f4409c2a692eacdf61fcdc2a7b8516c1198b1596ec78f457fda8a34acc8874939f01b442222e88e6ec20a1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c7c7175f728113c5110e27576dd38002

            SHA1

            f0bc0e28b7eac19744b6be0fd5441646a9a64ccb

            SHA256

            32cde8cc475cb71b4b9214f10ab660083d60cf57e92be0694c6a397b8538af75

            SHA512

            903c1f8bf3a07925564ccb66460fcd3055d729181fcfdac065b5a709be8cd1418755b240cc53239ee2e58aa2ade35ebde614796c5e7efd02dec8bd967a73d1e3

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c7c7175f728113c5110e27576dd38002

            SHA1

            f0bc0e28b7eac19744b6be0fd5441646a9a64ccb

            SHA256

            32cde8cc475cb71b4b9214f10ab660083d60cf57e92be0694c6a397b8538af75

            SHA512

            903c1f8bf3a07925564ccb66460fcd3055d729181fcfdac065b5a709be8cd1418755b240cc53239ee2e58aa2ade35ebde614796c5e7efd02dec8bd967a73d1e3

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            aec102dbfe62df311779c23d0a2e5f65

            SHA1

            309e8f3aaae122e81a4288ff263dee7158697f84

            SHA256

            806d75982dc43e48d5a0f8a0243b3eaa864521cf1bed794c91f925791ab38d5f

            SHA512

            8a048e99f78e261da29cf6fa284ee5eaedee3bbb7021370b0a38f8d9d43016ae3457f264dd8632a065f8a5defcfe9c5a7c206c47467032ac657c8bf7f4d8750f

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            41ed4817c3f5c88123fe73c7f70732df

            SHA1

            2241b01428435f2337bc9dfec8f3bd35a0e1811f

            SHA256

            2db46ca4733940f15b0ac746a94e5780b3c2314c3a5869d669c8010543a0c1c8

            SHA512

            158bc35482cd2ff624a16aa1e23c61e18028cf168e9acab7491cc8859a829fa651d12306c1db44baa28b61e48b16ea43dc2dd387d0c1e7af2d71124ed8ff497e

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4013812b3b7235110c00a29c43a1cab4

            SHA1

            eca14b3ae90cd471c959569e41843ac3f2321d50

            SHA256

            559b3001a8d86bc9cb803b70820b6d64104c0b74651af1e3e8018ce61aba1e8a

            SHA512

            06ce754c53aa1ce79c611a40cc579ef6db03f6b8a8f0f7994292aeb6e75073b9944d3f12d9c2d1e38594ba6563f452550beb4d193ab980538a8cd040e7d3a07a

          • memory/268-61-0x0000000000000000-mapping.dmp

          • memory/580-57-0x0000000000000000-mapping.dmp

          • memory/636-58-0x0000000000000000-mapping.dmp

          • memory/772-88-0x0000000000000000-mapping.dmp

          • memory/1336-87-0x0000000000000000-mapping.dmp

          • memory/1396-81-0x0000000000000000-mapping.dmp

          • memory/1468-62-0x0000000000000000-mapping.dmp

          • memory/1512-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1512-54-0x0000000074C41000-0x0000000074C43000-memory.dmp

            Filesize

            8KB

          • memory/1512-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1512-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1696-71-0x0000000000000000-mapping.dmp

          • memory/1728-77-0x0000000000000000-mapping.dmp

          • memory/1740-64-0x0000000000000000-mapping.dmp

          • memory/1960-82-0x0000000000000000-mapping.dmp