Analysis

  • max time kernel
    184s
  • max time network
    188s
  • 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 10:58

General

  • Target

    386cf35ba4c85546b1df02b9f59220159356ffe419f2f77fd259e2f11fa83f17.exe

  • Size

    447KB

  • MD5

    1a37755cb22bba9bd85fcccef5c54007

  • SHA1

    af78992c267a3f2a714ee7286d9541346b490e22

  • SHA256

    386cf35ba4c85546b1df02b9f59220159356ffe419f2f77fd259e2f11fa83f17

  • SHA512

    7003316d4c01fe93fcf9f23d94f5f05a3ab402a2d0e2550280c7affdfbbba574b71901349437e444ce0f05851954343fb69acc75612f87df68c8129b03f5e428

  • SSDEEP

    12288:Q6oyAB2Wm9YrFczpCDQhIqjM0z2pUCZ40MiX:Qlr8Wm9Y8pCDgIqiWCq0Ma

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\386cf35ba4c85546b1df02b9f59220159356ffe419f2f77fd259e2f11fa83f17.exe
    "C:\Users\Admin\AppData\Local\Temp\386cf35ba4c85546b1df02b9f59220159356ffe419f2f77fd259e2f11fa83f17.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:1268
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2184
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4800
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1020
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4132
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4904
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4820
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3672
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4728
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4288
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2132
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1096
          • 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:4480
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1888

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsm251E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            ec83ad87f2085ccc618ab3706e4a1369

            SHA1

            0a501c4f41963888e2663fb26830bbce79ac61c8

            SHA256

            867adb5ec6509bf3a829e9cecb97c48a00b4262ed56f8fcf98e98211c9d9a87b

            SHA512

            82e21fadf5fb0ba89c290960febe649fbef74da8e66fc8ebb797129fb1af19ec621fdb2dbaef4374fbaf0e01c7c5ba6b8b9a6f2d736bf43f298951fcd19d7d56

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            ec83ad87f2085ccc618ab3706e4a1369

            SHA1

            0a501c4f41963888e2663fb26830bbce79ac61c8

            SHA256

            867adb5ec6509bf3a829e9cecb97c48a00b4262ed56f8fcf98e98211c9d9a87b

            SHA512

            82e21fadf5fb0ba89c290960febe649fbef74da8e66fc8ebb797129fb1af19ec621fdb2dbaef4374fbaf0e01c7c5ba6b8b9a6f2d736bf43f298951fcd19d7d56

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            ec83ad87f2085ccc618ab3706e4a1369

            SHA1

            0a501c4f41963888e2663fb26830bbce79ac61c8

            SHA256

            867adb5ec6509bf3a829e9cecb97c48a00b4262ed56f8fcf98e98211c9d9a87b

            SHA512

            82e21fadf5fb0ba89c290960febe649fbef74da8e66fc8ebb797129fb1af19ec621fdb2dbaef4374fbaf0e01c7c5ba6b8b9a6f2d736bf43f298951fcd19d7d56

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            ec83ad87f2085ccc618ab3706e4a1369

            SHA1

            0a501c4f41963888e2663fb26830bbce79ac61c8

            SHA256

            867adb5ec6509bf3a829e9cecb97c48a00b4262ed56f8fcf98e98211c9d9a87b

            SHA512

            82e21fadf5fb0ba89c290960febe649fbef74da8e66fc8ebb797129fb1af19ec621fdb2dbaef4374fbaf0e01c7c5ba6b8b9a6f2d736bf43f298951fcd19d7d56

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            78f457924829beba7f1d7c69dfb21c7f

            SHA1

            5c6fe838ff32481b8cd57f4ce7ce945a19565e27

            SHA256

            ee7e7d23f212a337cdefa278c38877a61d5515d806a92bcd979fc289c8c072be

            SHA512

            c263ba04a8637ecc61009f8c656644baf4e04b8f9f366b37ee6e3b782b547264cebb64e8b6f2f3de7224e2f23a4f3b360e27d5b75b971029a423c381843b0489

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            78f457924829beba7f1d7c69dfb21c7f

            SHA1

            5c6fe838ff32481b8cd57f4ce7ce945a19565e27

            SHA256

            ee7e7d23f212a337cdefa278c38877a61d5515d806a92bcd979fc289c8c072be

            SHA512

            c263ba04a8637ecc61009f8c656644baf4e04b8f9f366b37ee6e3b782b547264cebb64e8b6f2f3de7224e2f23a4f3b360e27d5b75b971029a423c381843b0489

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            78f457924829beba7f1d7c69dfb21c7f

            SHA1

            5c6fe838ff32481b8cd57f4ce7ce945a19565e27

            SHA256

            ee7e7d23f212a337cdefa278c38877a61d5515d806a92bcd979fc289c8c072be

            SHA512

            c263ba04a8637ecc61009f8c656644baf4e04b8f9f366b37ee6e3b782b547264cebb64e8b6f2f3de7224e2f23a4f3b360e27d5b75b971029a423c381843b0489

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            026eb977db4c9815a637edcddc19e4a6

            SHA1

            eb2b9e9d629bd4cb81fe849508cadb65fa630916

            SHA256

            fff7a392219ee195967c8b0f1f0d1a18a6d953985ddacb0f28ad17d00e7f7fdb

            SHA512

            b58fe2192849018f93bc3698ee398fae37a80e583e3dc9f3474920e2694682493d8dbdbd14649e2a7b508e3e04000419a33ad9d0148a75abd858cb06118d6262

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            026eb977db4c9815a637edcddc19e4a6

            SHA1

            eb2b9e9d629bd4cb81fe849508cadb65fa630916

            SHA256

            fff7a392219ee195967c8b0f1f0d1a18a6d953985ddacb0f28ad17d00e7f7fdb

            SHA512

            b58fe2192849018f93bc3698ee398fae37a80e583e3dc9f3474920e2694682493d8dbdbd14649e2a7b508e3e04000419a33ad9d0148a75abd858cb06118d6262

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            c0fd933a31c37d162479741089a582a4

            SHA1

            14d2eb551100fd8143392074a9ee53e14c775d24

            SHA256

            8d4303bc38e45e21fc541799889101b6cd664ec20d1683b7006181979aec88b0

            SHA512

            21359097485f7fe27617dd506564f6f63f68686351087631b3c42aee9bcd55e4cb78bd2d68b0a24aff47c6271247e83cc4aed4b048b96fd3a346514c8e99c3e9

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            c0fd933a31c37d162479741089a582a4

            SHA1

            14d2eb551100fd8143392074a9ee53e14c775d24

            SHA256

            8d4303bc38e45e21fc541799889101b6cd664ec20d1683b7006181979aec88b0

            SHA512

            21359097485f7fe27617dd506564f6f63f68686351087631b3c42aee9bcd55e4cb78bd2d68b0a24aff47c6271247e83cc4aed4b048b96fd3a346514c8e99c3e9

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            c0fd933a31c37d162479741089a582a4

            SHA1

            14d2eb551100fd8143392074a9ee53e14c775d24

            SHA256

            8d4303bc38e45e21fc541799889101b6cd664ec20d1683b7006181979aec88b0

            SHA512

            21359097485f7fe27617dd506564f6f63f68686351087631b3c42aee9bcd55e4cb78bd2d68b0a24aff47c6271247e83cc4aed4b048b96fd3a346514c8e99c3e9

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            98268ca56e5e0f71c41d8b5d6393e04d

            SHA1

            bdf9e94b07944f2e205e23993bec531e0e48d3ea

            SHA256

            8806f1f74440ed7300b9b4c359f2278ac8bfbb5d7d977aeafc79e1d925c14404

            SHA512

            0063bdcc4a6a1e0c971122e287cf971d5c45d393b9de39127692c91fe2f57d625caf7b3d2a4ab122e01f0d7885b647569b3874d2e2330ab0b1f31f0257f680e4

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            98268ca56e5e0f71c41d8b5d6393e04d

            SHA1

            bdf9e94b07944f2e205e23993bec531e0e48d3ea

            SHA256

            8806f1f74440ed7300b9b4c359f2278ac8bfbb5d7d977aeafc79e1d925c14404

            SHA512

            0063bdcc4a6a1e0c971122e287cf971d5c45d393b9de39127692c91fe2f57d625caf7b3d2a4ab122e01f0d7885b647569b3874d2e2330ab0b1f31f0257f680e4

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            98268ca56e5e0f71c41d8b5d6393e04d

            SHA1

            bdf9e94b07944f2e205e23993bec531e0e48d3ea

            SHA256

            8806f1f74440ed7300b9b4c359f2278ac8bfbb5d7d977aeafc79e1d925c14404

            SHA512

            0063bdcc4a6a1e0c971122e287cf971d5c45d393b9de39127692c91fe2f57d625caf7b3d2a4ab122e01f0d7885b647569b3874d2e2330ab0b1f31f0257f680e4

          • memory/1020-139-0x0000000000000000-mapping.dmp
          • memory/1096-165-0x0000000000000000-mapping.dmp
          • memory/2132-164-0x0000000000000000-mapping.dmp
          • memory/2184-135-0x0000000000000000-mapping.dmp
          • memory/3672-152-0x0000000000000000-mapping.dmp
          • memory/4132-140-0x0000000000000000-mapping.dmp
          • memory/4288-158-0x0000000000000000-mapping.dmp
          • memory/4728-157-0x0000000000000000-mapping.dmp
          • memory/4800-136-0x0000000000000000-mapping.dmp
          • memory/4820-146-0x0000000000000000-mapping.dmp
          • memory/4904-141-0x0000000000000000-mapping.dmp