Analysis

  • max time kernel
    87s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2022 00:18

General

  • Target

    f41a359d297453f83c42f7a61185ad977aafdfe50b790e7012a035754ca02ecb.exe

  • Size

    697KB

  • MD5

    757059290b6c563fafa5394ff6a4df06

  • SHA1

    50283f411fe17327dc8a6eb92ca11ab2747b60db

  • SHA256

    f41a359d297453f83c42f7a61185ad977aafdfe50b790e7012a035754ca02ecb

  • SHA512

    3144e6d3a9297efa9f946bb5a0c25534307b03c1e96e290c61544be498416344d967e2d59aede8bb3e33f0e954a7628fc590adc457200121b42c1c87441e710d

  • SSDEEP

    12288:zAbu3fQ+thk6Ezqbf7A6rDGWC6mVdjHEC+6ryKlELxPNDbmH5DCvnKok8bgX2th:zAbuPPEzWf06aVdjHf+6rTGbyE/KV8b9

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\f41a359d297453f83c42f7a61185ad977aafdfe50b790e7012a035754ca02ecb.exe
    "C:\Users\Admin\AppData\Local\Temp\f41a359d297453f83c42f7a61185ad977aafdfe50b790e7012a035754ca02ecb.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:960
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1476
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:516
      • 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:1204
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1160
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1820
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1144
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1676
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1508
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1332
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2012
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1860
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1796

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b9f3627fd0086fe3b4040e47782ae83b

            SHA1

            2d0c2f32c13deba820733a48696086a7f0bc90ae

            SHA256

            6a0b6ec0163ec608d784f0a0261adf5b08b4befac195eac02747dd8e15f8bfc7

            SHA512

            d7394abd03391732aa25babb8442454c18f1db5db71a7359c0218f150cd26dbc6b755d63e41b79c5880ce9e77cafd0234441c5824e3dc224e1294d705da52f9d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            80448623d0a5a8818b7a5349a9ba3cd9

            SHA1

            1d3d9388847ee80f32a3326578e1dc4cdae7fea3

            SHA256

            7322fe423d828a95c5b82470e95c7577c006f6af08dcc5ba65bee81e248383b0

            SHA512

            7e4c261ea95c4f8a13cc892a22f13eb0adb9cdaaced017a9e9793645d6c7f14b3f0da011ba82b055de96ec26073a6a406ca87693e55cdc43eca5379bf2e20ff6

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8eb21f9877d2d55349dedd8e1a4044a2

            SHA1

            7b22a3c97677ae31ae16c97e10d0254886c85c3d

            SHA256

            55a9efc1c0daed1d7a25e5baf63ffdc22d6ee98370febeda4e321f0ec90db10b

            SHA512

            966c7f28ce805a0c1d91b05e12cda12ff219596522e8983bae3a9ba48d68d3507cdff701b55d4b0fb199d81f3d90b9ff0237aaf699dedfc7165a1006522b8177

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8d4efe6c1c3c3d7e54488c4784b73f1d

            SHA1

            30716bca56334bda2b66c537f223c90d8819856f

            SHA256

            8659e2bb91eaa37cae1c12f31691b669e12e0de262b3c6a24b07c088bbd0a60a

            SHA512

            5c3216b3453eeb9d9da0f3ae382a98205fa441968855349e6f1f83a97de5a6f3478c2b0f2722110cef4233d09c6075d475780348c735ffe79af097a279aec010

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8d4efe6c1c3c3d7e54488c4784b73f1d

            SHA1

            30716bca56334bda2b66c537f223c90d8819856f

            SHA256

            8659e2bb91eaa37cae1c12f31691b669e12e0de262b3c6a24b07c088bbd0a60a

            SHA512

            5c3216b3453eeb9d9da0f3ae382a98205fa441968855349e6f1f83a97de5a6f3478c2b0f2722110cef4233d09c6075d475780348c735ffe79af097a279aec010

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6d70bd6f3eb0b6064c38c58abbe5428f

            SHA1

            efaa8bf8ab70df627cc31e36f41d6a3da0224552

            SHA256

            b62dcc9ea5f2bf5494b5b29d4b76dc4a47a41b2cca58c8a109efeb259e5716e0

            SHA512

            188e135725df89a2a3d10cbb9e16cf942e1c3c8802b11094a1e54bd966b61007cd9aac7dbfed7da7486a7398cbbec434aa3744e08d7e2941fec5c37433bf7ea1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6d70bd6f3eb0b6064c38c58abbe5428f

            SHA1

            efaa8bf8ab70df627cc31e36f41d6a3da0224552

            SHA256

            b62dcc9ea5f2bf5494b5b29d4b76dc4a47a41b2cca58c8a109efeb259e5716e0

            SHA512

            188e135725df89a2a3d10cbb9e16cf942e1c3c8802b11094a1e54bd966b61007cd9aac7dbfed7da7486a7398cbbec434aa3744e08d7e2941fec5c37433bf7ea1

          • \Users\Admin\AppData\Local\Temp\nsj1181.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj1181.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1181.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1181.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1181.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b9f3627fd0086fe3b4040e47782ae83b

            SHA1

            2d0c2f32c13deba820733a48696086a7f0bc90ae

            SHA256

            6a0b6ec0163ec608d784f0a0261adf5b08b4befac195eac02747dd8e15f8bfc7

            SHA512

            d7394abd03391732aa25babb8442454c18f1db5db71a7359c0218f150cd26dbc6b755d63e41b79c5880ce9e77cafd0234441c5824e3dc224e1294d705da52f9d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b9f3627fd0086fe3b4040e47782ae83b

            SHA1

            2d0c2f32c13deba820733a48696086a7f0bc90ae

            SHA256

            6a0b6ec0163ec608d784f0a0261adf5b08b4befac195eac02747dd8e15f8bfc7

            SHA512

            d7394abd03391732aa25babb8442454c18f1db5db71a7359c0218f150cd26dbc6b755d63e41b79c5880ce9e77cafd0234441c5824e3dc224e1294d705da52f9d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b9f3627fd0086fe3b4040e47782ae83b

            SHA1

            2d0c2f32c13deba820733a48696086a7f0bc90ae

            SHA256

            6a0b6ec0163ec608d784f0a0261adf5b08b4befac195eac02747dd8e15f8bfc7

            SHA512

            d7394abd03391732aa25babb8442454c18f1db5db71a7359c0218f150cd26dbc6b755d63e41b79c5880ce9e77cafd0234441c5824e3dc224e1294d705da52f9d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            80448623d0a5a8818b7a5349a9ba3cd9

            SHA1

            1d3d9388847ee80f32a3326578e1dc4cdae7fea3

            SHA256

            7322fe423d828a95c5b82470e95c7577c006f6af08dcc5ba65bee81e248383b0

            SHA512

            7e4c261ea95c4f8a13cc892a22f13eb0adb9cdaaced017a9e9793645d6c7f14b3f0da011ba82b055de96ec26073a6a406ca87693e55cdc43eca5379bf2e20ff6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            80448623d0a5a8818b7a5349a9ba3cd9

            SHA1

            1d3d9388847ee80f32a3326578e1dc4cdae7fea3

            SHA256

            7322fe423d828a95c5b82470e95c7577c006f6af08dcc5ba65bee81e248383b0

            SHA512

            7e4c261ea95c4f8a13cc892a22f13eb0adb9cdaaced017a9e9793645d6c7f14b3f0da011ba82b055de96ec26073a6a406ca87693e55cdc43eca5379bf2e20ff6

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8eb21f9877d2d55349dedd8e1a4044a2

            SHA1

            7b22a3c97677ae31ae16c97e10d0254886c85c3d

            SHA256

            55a9efc1c0daed1d7a25e5baf63ffdc22d6ee98370febeda4e321f0ec90db10b

            SHA512

            966c7f28ce805a0c1d91b05e12cda12ff219596522e8983bae3a9ba48d68d3507cdff701b55d4b0fb199d81f3d90b9ff0237aaf699dedfc7165a1006522b8177

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8d4efe6c1c3c3d7e54488c4784b73f1d

            SHA1

            30716bca56334bda2b66c537f223c90d8819856f

            SHA256

            8659e2bb91eaa37cae1c12f31691b669e12e0de262b3c6a24b07c088bbd0a60a

            SHA512

            5c3216b3453eeb9d9da0f3ae382a98205fa441968855349e6f1f83a97de5a6f3478c2b0f2722110cef4233d09c6075d475780348c735ffe79af097a279aec010

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6d70bd6f3eb0b6064c38c58abbe5428f

            SHA1

            efaa8bf8ab70df627cc31e36f41d6a3da0224552

            SHA256

            b62dcc9ea5f2bf5494b5b29d4b76dc4a47a41b2cca58c8a109efeb259e5716e0

            SHA512

            188e135725df89a2a3d10cbb9e16cf942e1c3c8802b11094a1e54bd966b61007cd9aac7dbfed7da7486a7398cbbec434aa3744e08d7e2941fec5c37433bf7ea1

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

          • memory/516-58-0x0000000000000000-mapping.dmp

          • memory/960-69-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/960-54-0x0000000075551000-0x0000000075553000-memory.dmp

            Filesize

            8KB

          • memory/960-59-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/960-91-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/1144-77-0x0000000000000000-mapping.dmp

          • memory/1160-64-0x0000000000000000-mapping.dmp

          • memory/1204-62-0x0000000000000000-mapping.dmp

          • memory/1332-87-0x0000000000000000-mapping.dmp

          • memory/1476-57-0x0000000000000000-mapping.dmp

          • memory/1508-82-0x0000000000000000-mapping.dmp

          • memory/1676-81-0x0000000000000000-mapping.dmp

          • memory/1820-71-0x0000000000000000-mapping.dmp

          • memory/2012-88-0x0000000000000000-mapping.dmp