Analysis

  • max time kernel
    90s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:06

General

  • Target

    f7c6537f0adbdf10ad1f32c52f319de520491d13155024d28c0894e77d613bfd.exe

  • Size

    601KB

  • MD5

    0f00280b6e5d1656cb7a3ce2e15a33e2

  • SHA1

    1b0edf55c3ec9293ada8a661756fe79aa5295ca0

  • SHA256

    f7c6537f0adbdf10ad1f32c52f319de520491d13155024d28c0894e77d613bfd

  • SHA512

    222ddac6634cfaec38d4dd3598ac1dc26661e594fa6e899db9a915b995d14245c1bd6b43567369ced563a5869e18cda8196daf01d5e42d8ea24156bda910d1f3

  • SSDEEP

    12288:GIny5DYTtVCXbobMqkz98Po7K86Oxlh0qTwB0LcA:oUTtVsbok6Po7yOmq0

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\f7c6537f0adbdf10ad1f32c52f319de520491d13155024d28c0894e77d613bfd.exe
    "C:\Users\Admin\AppData\Local\Temp\f7c6537f0adbdf10ad1f32c52f319de520491d13155024d28c0894e77d613bfd.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:5052
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1520
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1604
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5112
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:5108
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1988
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2208
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4844
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4156
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4608
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3704
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2028
          • 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:1960
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4624

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiC366.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f5caf42080d10f3c383bb7e40b05e23

            SHA1

            26c06a173bd8ab5cec3c7075f61d689ee8641f21

            SHA256

            79e6dc7714e3420021af6533ad65d2aa4c39be79ce86779d92950cc4f759163f

            SHA512

            d4919e259cf4aa38d727e0d9f04c7c66570ac24af9b99912442c9d0d150c3e22de3dcd96a02434fb82c00e5355447e2a7821a08331367fa59c9e506d1f907853

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f5caf42080d10f3c383bb7e40b05e23

            SHA1

            26c06a173bd8ab5cec3c7075f61d689ee8641f21

            SHA256

            79e6dc7714e3420021af6533ad65d2aa4c39be79ce86779d92950cc4f759163f

            SHA512

            d4919e259cf4aa38d727e0d9f04c7c66570ac24af9b99912442c9d0d150c3e22de3dcd96a02434fb82c00e5355447e2a7821a08331367fa59c9e506d1f907853

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f5caf42080d10f3c383bb7e40b05e23

            SHA1

            26c06a173bd8ab5cec3c7075f61d689ee8641f21

            SHA256

            79e6dc7714e3420021af6533ad65d2aa4c39be79ce86779d92950cc4f759163f

            SHA512

            d4919e259cf4aa38d727e0d9f04c7c66570ac24af9b99912442c9d0d150c3e22de3dcd96a02434fb82c00e5355447e2a7821a08331367fa59c9e506d1f907853

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f5caf42080d10f3c383bb7e40b05e23

            SHA1

            26c06a173bd8ab5cec3c7075f61d689ee8641f21

            SHA256

            79e6dc7714e3420021af6533ad65d2aa4c39be79ce86779d92950cc4f759163f

            SHA512

            d4919e259cf4aa38d727e0d9f04c7c66570ac24af9b99912442c9d0d150c3e22de3dcd96a02434fb82c00e5355447e2a7821a08331367fa59c9e506d1f907853

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a4d2410454a29167092ee4a8f3266a0b

            SHA1

            9a27e791a22b933cd9a70acd04df8eba2ef6c950

            SHA256

            fe22cff4c88b6cc4ce9ea7cfbe602fce199b8b307b1599623f3d4a84b5bfa819

            SHA512

            e77f088a8da10ff710f33cd7a4400a79f158f8e66d567f4a9b2059f7cecbd3530a8d8f5f181215c87b78f041da85fcd7764570147218533bfec1b137f1e7c72f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a4d2410454a29167092ee4a8f3266a0b

            SHA1

            9a27e791a22b933cd9a70acd04df8eba2ef6c950

            SHA256

            fe22cff4c88b6cc4ce9ea7cfbe602fce199b8b307b1599623f3d4a84b5bfa819

            SHA512

            e77f088a8da10ff710f33cd7a4400a79f158f8e66d567f4a9b2059f7cecbd3530a8d8f5f181215c87b78f041da85fcd7764570147218533bfec1b137f1e7c72f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a4d2410454a29167092ee4a8f3266a0b

            SHA1

            9a27e791a22b933cd9a70acd04df8eba2ef6c950

            SHA256

            fe22cff4c88b6cc4ce9ea7cfbe602fce199b8b307b1599623f3d4a84b5bfa819

            SHA512

            e77f088a8da10ff710f33cd7a4400a79f158f8e66d567f4a9b2059f7cecbd3530a8d8f5f181215c87b78f041da85fcd7764570147218533bfec1b137f1e7c72f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            9fd4a63291ae0cf50f01d7ac177d567e

            SHA1

            326203762ba4a0adb7d398d52490ebf5f1e46755

            SHA256

            071e11ee3f2ed2c632018c85f654516fef1685e8565fee8d4fe7fd75b662ecc7

            SHA512

            d8fac96cc305a0ca7003cf246e1c6cd6d9b3187031c999a9f2371ac995162959fcf200d8609cb968910371de846f5cf0d3c813efd1cd1bf62841638f06450c3c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            9fd4a63291ae0cf50f01d7ac177d567e

            SHA1

            326203762ba4a0adb7d398d52490ebf5f1e46755

            SHA256

            071e11ee3f2ed2c632018c85f654516fef1685e8565fee8d4fe7fd75b662ecc7

            SHA512

            d8fac96cc305a0ca7003cf246e1c6cd6d9b3187031c999a9f2371ac995162959fcf200d8609cb968910371de846f5cf0d3c813efd1cd1bf62841638f06450c3c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ae45f20876803080713516950c808824

            SHA1

            129f9479178ea78b449b5b0ff846594f3c14b837

            SHA256

            dffcaed48b2c312e8d1c308536ea477abe06cf79e2ccb8030abaa0cf9e5139d4

            SHA512

            bdba0eb0643633182c239b1e3eb3e706e65737907a0ae1fbb5f9bfe554140d5e674bb61788531fa46fe03004d39a8bbdc90738b10b698827d3cd064418cdd321

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ae45f20876803080713516950c808824

            SHA1

            129f9479178ea78b449b5b0ff846594f3c14b837

            SHA256

            dffcaed48b2c312e8d1c308536ea477abe06cf79e2ccb8030abaa0cf9e5139d4

            SHA512

            bdba0eb0643633182c239b1e3eb3e706e65737907a0ae1fbb5f9bfe554140d5e674bb61788531fa46fe03004d39a8bbdc90738b10b698827d3cd064418cdd321

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ae45f20876803080713516950c808824

            SHA1

            129f9479178ea78b449b5b0ff846594f3c14b837

            SHA256

            dffcaed48b2c312e8d1c308536ea477abe06cf79e2ccb8030abaa0cf9e5139d4

            SHA512

            bdba0eb0643633182c239b1e3eb3e706e65737907a0ae1fbb5f9bfe554140d5e674bb61788531fa46fe03004d39a8bbdc90738b10b698827d3cd064418cdd321

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            34b51bf023b249a96eea28f2a70f68cc

            SHA1

            5a2a446622fe98ae4e1961bae07712d997496d6b

            SHA256

            f3e48941fc2dc8db4ca0cde95f71b0a536b852c4ae1057ab7d03b4cc9161b7a9

            SHA512

            ae5a1abdb56cf559835509ff1a0e01cad6e865f3c278769e194020c55fce8c5537a6db3ac18441ebe1831e5cfa1b5e3f6b4592abd1966bb07f648f6def19265c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            34b51bf023b249a96eea28f2a70f68cc

            SHA1

            5a2a446622fe98ae4e1961bae07712d997496d6b

            SHA256

            f3e48941fc2dc8db4ca0cde95f71b0a536b852c4ae1057ab7d03b4cc9161b7a9

            SHA512

            ae5a1abdb56cf559835509ff1a0e01cad6e865f3c278769e194020c55fce8c5537a6db3ac18441ebe1831e5cfa1b5e3f6b4592abd1966bb07f648f6def19265c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            34b51bf023b249a96eea28f2a70f68cc

            SHA1

            5a2a446622fe98ae4e1961bae07712d997496d6b

            SHA256

            f3e48941fc2dc8db4ca0cde95f71b0a536b852c4ae1057ab7d03b4cc9161b7a9

            SHA512

            ae5a1abdb56cf559835509ff1a0e01cad6e865f3c278769e194020c55fce8c5537a6db3ac18441ebe1831e5cfa1b5e3f6b4592abd1966bb07f648f6def19265c

          • memory/1520-136-0x0000000000000000-mapping.dmp

          • memory/1604-137-0x0000000000000000-mapping.dmp

          • memory/1988-142-0x0000000000000000-mapping.dmp

          • memory/2028-166-0x0000000000000000-mapping.dmp

          • memory/2208-147-0x0000000000000000-mapping.dmp

          • memory/3704-165-0x0000000000000000-mapping.dmp

          • memory/4156-158-0x0000000000000000-mapping.dmp

          • memory/4608-159-0x0000000000000000-mapping.dmp

          • memory/4844-153-0x0000000000000000-mapping.dmp

          • memory/5052-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/5052-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/5108-141-0x0000000000000000-mapping.dmp

          • memory/5112-140-0x0000000000000000-mapping.dmp