Analysis

  • max time kernel
    163s
  • max time network
    169s
  • 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 10:23

General

  • Target

    6e526ca298a8b562b009f68ea6a02165a6b1088b42bd4d0acd4349f68c241d67.exe

  • Size

    600KB

  • MD5

    cac5b37f8b4b39fc535646ae54a3edef

  • SHA1

    71b0c190b9ab2642d2ee5ab4641d92ac26efdd0f

  • SHA256

    6e526ca298a8b562b009f68ea6a02165a6b1088b42bd4d0acd4349f68c241d67

  • SHA512

    c585ec7511f4ddf0c82d4600df4645dca053eca628dee50cbe48f6620e9b2aea97d01c234bc9f456239bb3664a8f2185e18c8169af4cf7a168ad474a1f2be81d

  • SSDEEP

    12288:pIny5DYTOsWb79oS8P6g0B0oPVXp6j2a/JC:FUTOsWbQCvXgj

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\6e526ca298a8b562b009f68ea6a02165a6b1088b42bd4d0acd4349f68c241d67.exe
    "C:\Users\Admin\AppData\Local\Temp\6e526ca298a8b562b009f68ea6a02165a6b1088b42bd4d0acd4349f68c241d67.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:4628
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4832
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:980
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5084
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1624
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4908
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2264
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3384
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4944
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:388
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2228
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2172
          • 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:1536
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4188

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            97642619a66d1a062488a33c2427b657

            SHA1

            a8165fe4d1e4bd3ccc739f3a32479e63d6b8dbe1

            SHA256

            fa753ab4114abb4dff327e2257cbac20ad8164a9283044bc288f906225179122

            SHA512

            e3dd76ea7dfa40dec02010ba81139bbc47509dc9fda239bf06109174a4503581e35fbf4ad49836bb7e879f9b2362ab85ec1ed97b44d629e6109bfe41d5cfa3ac

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            97642619a66d1a062488a33c2427b657

            SHA1

            a8165fe4d1e4bd3ccc739f3a32479e63d6b8dbe1

            SHA256

            fa753ab4114abb4dff327e2257cbac20ad8164a9283044bc288f906225179122

            SHA512

            e3dd76ea7dfa40dec02010ba81139bbc47509dc9fda239bf06109174a4503581e35fbf4ad49836bb7e879f9b2362ab85ec1ed97b44d629e6109bfe41d5cfa3ac

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            97642619a66d1a062488a33c2427b657

            SHA1

            a8165fe4d1e4bd3ccc739f3a32479e63d6b8dbe1

            SHA256

            fa753ab4114abb4dff327e2257cbac20ad8164a9283044bc288f906225179122

            SHA512

            e3dd76ea7dfa40dec02010ba81139bbc47509dc9fda239bf06109174a4503581e35fbf4ad49836bb7e879f9b2362ab85ec1ed97b44d629e6109bfe41d5cfa3ac

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            97642619a66d1a062488a33c2427b657

            SHA1

            a8165fe4d1e4bd3ccc739f3a32479e63d6b8dbe1

            SHA256

            fa753ab4114abb4dff327e2257cbac20ad8164a9283044bc288f906225179122

            SHA512

            e3dd76ea7dfa40dec02010ba81139bbc47509dc9fda239bf06109174a4503581e35fbf4ad49836bb7e879f9b2362ab85ec1ed97b44d629e6109bfe41d5cfa3ac

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3c1c6b09535c8d9a4364f74bb7ba771d

            SHA1

            3e18240fa2c4e5c76f61b53ed8647098c8d40cae

            SHA256

            bbe1e87979accd7d55a55b59e2407ed92834bf970c5ae1d60d29e8b68e3b015c

            SHA512

            274bd6cf17130977b286245e13e85ca59435e6717349ca51a2c24d07144faa75f64c1044f75f4a000ec0ec6cb6b51b719568af63b9101c0ba5972bcea0cdcf54

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3c1c6b09535c8d9a4364f74bb7ba771d

            SHA1

            3e18240fa2c4e5c76f61b53ed8647098c8d40cae

            SHA256

            bbe1e87979accd7d55a55b59e2407ed92834bf970c5ae1d60d29e8b68e3b015c

            SHA512

            274bd6cf17130977b286245e13e85ca59435e6717349ca51a2c24d07144faa75f64c1044f75f4a000ec0ec6cb6b51b719568af63b9101c0ba5972bcea0cdcf54

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3c1c6b09535c8d9a4364f74bb7ba771d

            SHA1

            3e18240fa2c4e5c76f61b53ed8647098c8d40cae

            SHA256

            bbe1e87979accd7d55a55b59e2407ed92834bf970c5ae1d60d29e8b68e3b015c

            SHA512

            274bd6cf17130977b286245e13e85ca59435e6717349ca51a2c24d07144faa75f64c1044f75f4a000ec0ec6cb6b51b719568af63b9101c0ba5972bcea0cdcf54

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2e3916d6b44bcd024ae6b0c934e17783

            SHA1

            0029841c18a046fbe0fcd7b61d8bbd204fa5f4ec

            SHA256

            c975040c2b5c8472c69908a8199861834ee55526921accd07abb3319757f835b

            SHA512

            2cf022a4fc0cb963b891fb081b92228e10092ce91936715e6db49202cd078423601cc58192ef22a4d4d944140eb7f882993238f3eecc0b60943806c1b1de888e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2e3916d6b44bcd024ae6b0c934e17783

            SHA1

            0029841c18a046fbe0fcd7b61d8bbd204fa5f4ec

            SHA256

            c975040c2b5c8472c69908a8199861834ee55526921accd07abb3319757f835b

            SHA512

            2cf022a4fc0cb963b891fb081b92228e10092ce91936715e6db49202cd078423601cc58192ef22a4d4d944140eb7f882993238f3eecc0b60943806c1b1de888e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            48d77ec3ceb00826730e2c61037a2a37

            SHA1

            2c48d686f061fe4d4c8a1c9d8297a566b16f1fc9

            SHA256

            90f1377b178752d28f352cd08c405d36546a6b3f990e9791200d92ea56c364af

            SHA512

            6c8d8cc64fa1d3dbf0294a9a958f6449040fc0d9261d91a64801f4d7c3985c7be521867b0fbfd681e2433b1dca19b2f4f3d787ec438ca007f4856ae742c0f4cb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            48d77ec3ceb00826730e2c61037a2a37

            SHA1

            2c48d686f061fe4d4c8a1c9d8297a566b16f1fc9

            SHA256

            90f1377b178752d28f352cd08c405d36546a6b3f990e9791200d92ea56c364af

            SHA512

            6c8d8cc64fa1d3dbf0294a9a958f6449040fc0d9261d91a64801f4d7c3985c7be521867b0fbfd681e2433b1dca19b2f4f3d787ec438ca007f4856ae742c0f4cb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            48d77ec3ceb00826730e2c61037a2a37

            SHA1

            2c48d686f061fe4d4c8a1c9d8297a566b16f1fc9

            SHA256

            90f1377b178752d28f352cd08c405d36546a6b3f990e9791200d92ea56c364af

            SHA512

            6c8d8cc64fa1d3dbf0294a9a958f6449040fc0d9261d91a64801f4d7c3985c7be521867b0fbfd681e2433b1dca19b2f4f3d787ec438ca007f4856ae742c0f4cb

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            30ec4d0b8c7d516328c0f5fac60c70fc

            SHA1

            34c08d68b2a6eb8045e36dc02e2cd7306a7c48a3

            SHA256

            8f4c1b3d4434fb7f544d6a14fff4dbd45203a952e016e9778a2c95ce3e23b253

            SHA512

            85950b2fca92c9134e3a756220083ef3aa3d62c113ea3db69c683bcb747915f6751dfd199dcce1cde6c4cd90bddd436b3c420be6c201141cc4df0c1de983e11d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            30ec4d0b8c7d516328c0f5fac60c70fc

            SHA1

            34c08d68b2a6eb8045e36dc02e2cd7306a7c48a3

            SHA256

            8f4c1b3d4434fb7f544d6a14fff4dbd45203a952e016e9778a2c95ce3e23b253

            SHA512

            85950b2fca92c9134e3a756220083ef3aa3d62c113ea3db69c683bcb747915f6751dfd199dcce1cde6c4cd90bddd436b3c420be6c201141cc4df0c1de983e11d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            30ec4d0b8c7d516328c0f5fac60c70fc

            SHA1

            34c08d68b2a6eb8045e36dc02e2cd7306a7c48a3

            SHA256

            8f4c1b3d4434fb7f544d6a14fff4dbd45203a952e016e9778a2c95ce3e23b253

            SHA512

            85950b2fca92c9134e3a756220083ef3aa3d62c113ea3db69c683bcb747915f6751dfd199dcce1cde6c4cd90bddd436b3c420be6c201141cc4df0c1de983e11d

          • memory/388-159-0x0000000000000000-mapping.dmp

          • memory/980-137-0x0000000000000000-mapping.dmp

          • memory/1624-141-0x0000000000000000-mapping.dmp

          • memory/2172-166-0x0000000000000000-mapping.dmp

          • memory/2228-165-0x0000000000000000-mapping.dmp

          • memory/2264-147-0x0000000000000000-mapping.dmp

          • memory/3384-153-0x0000000000000000-mapping.dmp

          • memory/4628-136-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4628-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4832-135-0x0000000000000000-mapping.dmp

          • memory/4908-142-0x0000000000000000-mapping.dmp

          • memory/4944-158-0x0000000000000000-mapping.dmp

          • memory/5084-140-0x0000000000000000-mapping.dmp