Analysis

  • max time kernel
    33s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:14

General

  • Target

    b48d6ad517ae0be206fee982db5736e878a6ec204d1d0a5838b59a6987277ce2.exe

  • Size

    603KB

  • MD5

    6a7b7fe728721a40de31e73a26868d9d

  • SHA1

    89ac5395fb9c2077474c5e38989b9806f0d39692

  • SHA256

    b48d6ad517ae0be206fee982db5736e878a6ec204d1d0a5838b59a6987277ce2

  • SHA512

    2c5ea281d4870265688cf9a58ce65660cb3cf2a2f90105f6e174bccad7e8eb9be2df30d9db8b5e1f64ee730891cbdba30e5bb13163f239e1e1c60e1519bfdb92

  • SSDEEP

    12288:IIny5DYTfIujfy3Iv+s5OJDuamc48gAA8psRZlT98Utd:GUTfF7KIv+e+xKZ98Utd

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\b48d6ad517ae0be206fee982db5736e878a6ec204d1d0a5838b59a6987277ce2.exe
    "C:\Users\Admin\AppData\Local\Temp\b48d6ad517ae0be206fee982db5736e878a6ec204d1d0a5838b59a6987277ce2.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:1940
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1544
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1560
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1200
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1424
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:580
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1704
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1196
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:908
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:316
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1300
          • 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:1436

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            84fa011a3e8058dd1ffb7319858730fb

            SHA1

            1e5388e1790140e59469ed6bb94007ca40d4de4f

            SHA256

            a581460def5da2489a05b106d3338d584d266610557045553fc48c9095ad1ddd

            SHA512

            6b3b2064272bbc78f313f114aa9b755e957e205cfb479ebe127e16b9ddd1abd643e8508ff070a0af52a8b012f9d88cafa4a7ad4f38b1ebfaf2d51cb5df0c3489

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            edeb76b4b7cc9e5fd04dea4d446f05c2

            SHA1

            11de1342d2bab01ac7e5fc84306da616d43949d5

            SHA256

            49494898d35bd562a10c2b5828666dde821b6d9bdc291c04c2598cd1c9ef0180

            SHA512

            9cc1bb05dc35c4eedc3cb8e913bf29e632c9b80b131386c35567e1cf3669255d0c21b4eb654abe54d55ec68efb30251c3c3ab4ebedc12841e768cd47445e5bf4

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a878b16b67e5fa6849b86fa53b5c8f93

            SHA1

            1dc4e82eb3d6d15a465e0b87d3fc6e27c2c46612

            SHA256

            1d1495588dce18e233161aaa1c4e7a53b67d32916d1897d73359dbab9b739b81

            SHA512

            a2a20e1bec22af5f51046342c624192fe788c8ec644c8c6df5ec703faadd45581218d24440cbb0f70299c393420f0d58ca96f33967afc0b5106d249e7df4d86d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            34038ae9c7074bfd6a9775ac0064a1ac

            SHA1

            de7324c841da174def41d3ec09aaf31bdfe3bccc

            SHA256

            b46920c0dc21aeb47fc770aa473626fc23a322fa3d20ab66d821ec1856bc4174

            SHA512

            a0198b1471a2344f4f16f0cbe1280108ef86519aa8b08eccaa049e90051a8edc5d5a1abe4a6e9141782972b576f9c158c215a47c79b2af9b373cdb28f61acb6d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            34038ae9c7074bfd6a9775ac0064a1ac

            SHA1

            de7324c841da174def41d3ec09aaf31bdfe3bccc

            SHA256

            b46920c0dc21aeb47fc770aa473626fc23a322fa3d20ab66d821ec1856bc4174

            SHA512

            a0198b1471a2344f4f16f0cbe1280108ef86519aa8b08eccaa049e90051a8edc5d5a1abe4a6e9141782972b576f9c158c215a47c79b2af9b373cdb28f61acb6d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a0214de05ba4a2d5b6a06f694c7aa849

            SHA1

            04bc14a7e2b175cb885e5fdb882dfd84108b777b

            SHA256

            f84c2ae1e37ac765d30c03aa922736ff2f36c4d91c3bdf784d36bd1350f149da

            SHA512

            dbd626f3bd042355097c0b45b1f1d79344979fc95d1edd2985629f1c3e494785cfa27a57ba60cd40a85cc3e59ad487d925c23a6ada5ddb8edb6d732d77c92b65

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a0214de05ba4a2d5b6a06f694c7aa849

            SHA1

            04bc14a7e2b175cb885e5fdb882dfd84108b777b

            SHA256

            f84c2ae1e37ac765d30c03aa922736ff2f36c4d91c3bdf784d36bd1350f149da

            SHA512

            dbd626f3bd042355097c0b45b1f1d79344979fc95d1edd2985629f1c3e494785cfa27a57ba60cd40a85cc3e59ad487d925c23a6ada5ddb8edb6d732d77c92b65

          • \Users\Admin\AppData\Local\Temp\nsy2BD4.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy2BD4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2BD4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2BD4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2BD4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            84fa011a3e8058dd1ffb7319858730fb

            SHA1

            1e5388e1790140e59469ed6bb94007ca40d4de4f

            SHA256

            a581460def5da2489a05b106d3338d584d266610557045553fc48c9095ad1ddd

            SHA512

            6b3b2064272bbc78f313f114aa9b755e957e205cfb479ebe127e16b9ddd1abd643e8508ff070a0af52a8b012f9d88cafa4a7ad4f38b1ebfaf2d51cb5df0c3489

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            84fa011a3e8058dd1ffb7319858730fb

            SHA1

            1e5388e1790140e59469ed6bb94007ca40d4de4f

            SHA256

            a581460def5da2489a05b106d3338d584d266610557045553fc48c9095ad1ddd

            SHA512

            6b3b2064272bbc78f313f114aa9b755e957e205cfb479ebe127e16b9ddd1abd643e8508ff070a0af52a8b012f9d88cafa4a7ad4f38b1ebfaf2d51cb5df0c3489

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            84fa011a3e8058dd1ffb7319858730fb

            SHA1

            1e5388e1790140e59469ed6bb94007ca40d4de4f

            SHA256

            a581460def5da2489a05b106d3338d584d266610557045553fc48c9095ad1ddd

            SHA512

            6b3b2064272bbc78f313f114aa9b755e957e205cfb479ebe127e16b9ddd1abd643e8508ff070a0af52a8b012f9d88cafa4a7ad4f38b1ebfaf2d51cb5df0c3489

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            edeb76b4b7cc9e5fd04dea4d446f05c2

            SHA1

            11de1342d2bab01ac7e5fc84306da616d43949d5

            SHA256

            49494898d35bd562a10c2b5828666dde821b6d9bdc291c04c2598cd1c9ef0180

            SHA512

            9cc1bb05dc35c4eedc3cb8e913bf29e632c9b80b131386c35567e1cf3669255d0c21b4eb654abe54d55ec68efb30251c3c3ab4ebedc12841e768cd47445e5bf4

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            edeb76b4b7cc9e5fd04dea4d446f05c2

            SHA1

            11de1342d2bab01ac7e5fc84306da616d43949d5

            SHA256

            49494898d35bd562a10c2b5828666dde821b6d9bdc291c04c2598cd1c9ef0180

            SHA512

            9cc1bb05dc35c4eedc3cb8e913bf29e632c9b80b131386c35567e1cf3669255d0c21b4eb654abe54d55ec68efb30251c3c3ab4ebedc12841e768cd47445e5bf4

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a878b16b67e5fa6849b86fa53b5c8f93

            SHA1

            1dc4e82eb3d6d15a465e0b87d3fc6e27c2c46612

            SHA256

            1d1495588dce18e233161aaa1c4e7a53b67d32916d1897d73359dbab9b739b81

            SHA512

            a2a20e1bec22af5f51046342c624192fe788c8ec644c8c6df5ec703faadd45581218d24440cbb0f70299c393420f0d58ca96f33967afc0b5106d249e7df4d86d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            34038ae9c7074bfd6a9775ac0064a1ac

            SHA1

            de7324c841da174def41d3ec09aaf31bdfe3bccc

            SHA256

            b46920c0dc21aeb47fc770aa473626fc23a322fa3d20ab66d821ec1856bc4174

            SHA512

            a0198b1471a2344f4f16f0cbe1280108ef86519aa8b08eccaa049e90051a8edc5d5a1abe4a6e9141782972b576f9c158c215a47c79b2af9b373cdb28f61acb6d

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a0214de05ba4a2d5b6a06f694c7aa849

            SHA1

            04bc14a7e2b175cb885e5fdb882dfd84108b777b

            SHA256

            f84c2ae1e37ac765d30c03aa922736ff2f36c4d91c3bdf784d36bd1350f149da

            SHA512

            dbd626f3bd042355097c0b45b1f1d79344979fc95d1edd2985629f1c3e494785cfa27a57ba60cd40a85cc3e59ad487d925c23a6ada5ddb8edb6d732d77c92b65

          • memory/316-86-0x0000000000000000-mapping.dmp

          • memory/580-70-0x0000000000000000-mapping.dmp

          • memory/908-81-0x0000000000000000-mapping.dmp

          • memory/1196-80-0x0000000000000000-mapping.dmp

          • memory/1200-62-0x0000000000000000-mapping.dmp

          • memory/1300-87-0x0000000000000000-mapping.dmp

          • memory/1424-64-0x0000000000000000-mapping.dmp

          • memory/1544-59-0x0000000000000000-mapping.dmp

          • memory/1560-61-0x0000000000000000-mapping.dmp

          • memory/1704-76-0x0000000000000000-mapping.dmp

          • memory/1940-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

            Filesize

            8KB

          • memory/1940-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1940-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2028-57-0x0000000000000000-mapping.dmp