Analysis

  • max time kernel
    112s
  • max time network
    138s
  • 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 11:00

General

  • Target

    11a3934e7566f38f1f9685509758cb9c0a3d724f9f2eecabbf3d76015e5a7a13.exe

  • Size

    446KB

  • MD5

    dacf61592b513cc90108b695fb4ea6cf

  • SHA1

    c160497f81b2f0cdea148955e54ce8bd0e6e39e0

  • SHA256

    11a3934e7566f38f1f9685509758cb9c0a3d724f9f2eecabbf3d76015e5a7a13

  • SHA512

    926f6d3c73e40640cb618fc030c0e54ab8f0df2ed9d643e35233ba51ee1271e5e3cfa3d481e0adf964ce76b060ab42f917bff20eb8fd4e3145eaf0b793e76375

  • SSDEEP

    12288:AKy1Uli3rOl3qG8fQv8Bgl16u0dfJQZotK/p:AKxyKUDu63Rmp

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\11a3934e7566f38f1f9685509758cb9c0a3d724f9f2eecabbf3d76015e5a7a13.exe
    "C:\Users\Admin\AppData\Local\Temp\11a3934e7566f38f1f9685509758cb9c0a3d724f9f2eecabbf3d76015e5a7a13.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:4512
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2688
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4988
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4688
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4848
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1196
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3560
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:308
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:480
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3676
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3472
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4184
          • 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:3848
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3080

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk1474.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            106KB

            MD5

            1e926790edd5cdedf1a7031cd1ffc06e

            SHA1

            403fc2942a31eaae1ef175cd0a64fb65754e193d

            SHA256

            e12557aec8c5fdcdffedfc88c35ac08bfd374605f67c8c0a94fe31a1368d8e5d

            SHA512

            a4e48ac732bdbc30a6922ff4a1b9a0af911a11e8943fd56203af30e9fabe1c6c8fedf3239e1369dd32a9a60ce8fd5e48281308e1c8d0ba7b52aacca40b799385

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

            106KB

            MD5

            1e926790edd5cdedf1a7031cd1ffc06e

            SHA1

            403fc2942a31eaae1ef175cd0a64fb65754e193d

            SHA256

            e12557aec8c5fdcdffedfc88c35ac08bfd374605f67c8c0a94fe31a1368d8e5d

            SHA512

            a4e48ac732bdbc30a6922ff4a1b9a0af911a11e8943fd56203af30e9fabe1c6c8fedf3239e1369dd32a9a60ce8fd5e48281308e1c8d0ba7b52aacca40b799385

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

            106KB

            MD5

            1e926790edd5cdedf1a7031cd1ffc06e

            SHA1

            403fc2942a31eaae1ef175cd0a64fb65754e193d

            SHA256

            e12557aec8c5fdcdffedfc88c35ac08bfd374605f67c8c0a94fe31a1368d8e5d

            SHA512

            a4e48ac732bdbc30a6922ff4a1b9a0af911a11e8943fd56203af30e9fabe1c6c8fedf3239e1369dd32a9a60ce8fd5e48281308e1c8d0ba7b52aacca40b799385

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

            106KB

            MD5

            1e926790edd5cdedf1a7031cd1ffc06e

            SHA1

            403fc2942a31eaae1ef175cd0a64fb65754e193d

            SHA256

            e12557aec8c5fdcdffedfc88c35ac08bfd374605f67c8c0a94fe31a1368d8e5d

            SHA512

            a4e48ac732bdbc30a6922ff4a1b9a0af911a11e8943fd56203af30e9fabe1c6c8fedf3239e1369dd32a9a60ce8fd5e48281308e1c8d0ba7b52aacca40b799385

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

            244KB

            MD5

            c640bff81c75ccb4b84d4842796ca4a0

            SHA1

            b13e5e368f9aafd024a9a5f1be00316a978d6108

            SHA256

            61af783e6538d63d5bbc92291c1192f32d52ceb6255900c159520a0cc7c67714

            SHA512

            ee36d3651accc715e54e9c56560fe0d9100d4b471ea14904741aed837a2770437444273b5ef03e1f6a4d845d743cbbd411a3d7bb983734ec6846dfc9bf848be6

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

            244KB

            MD5

            c640bff81c75ccb4b84d4842796ca4a0

            SHA1

            b13e5e368f9aafd024a9a5f1be00316a978d6108

            SHA256

            61af783e6538d63d5bbc92291c1192f32d52ceb6255900c159520a0cc7c67714

            SHA512

            ee36d3651accc715e54e9c56560fe0d9100d4b471ea14904741aed837a2770437444273b5ef03e1f6a4d845d743cbbd411a3d7bb983734ec6846dfc9bf848be6

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

            244KB

            MD5

            c640bff81c75ccb4b84d4842796ca4a0

            SHA1

            b13e5e368f9aafd024a9a5f1be00316a978d6108

            SHA256

            61af783e6538d63d5bbc92291c1192f32d52ceb6255900c159520a0cc7c67714

            SHA512

            ee36d3651accc715e54e9c56560fe0d9100d4b471ea14904741aed837a2770437444273b5ef03e1f6a4d845d743cbbd411a3d7bb983734ec6846dfc9bf848be6

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

            108KB

            MD5

            3b10d7e45c5338bc70a2b76c916bc0f7

            SHA1

            fe06ef9cad403718e7bfcee99397200495fc1ca9

            SHA256

            9eb3c42e63a294e4338bea6efc6cbd5eee83a071a9c1ad637a93c1fdbf170d1f

            SHA512

            aee78d59c642994ca83752d7edacfcd5c9da6dea4d896432ef615e01befc66780f4dba106f3d7ee2c49b88ac8f9a3d429b5d03e8e05507a646f917f6d02b8499

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

            108KB

            MD5

            3b10d7e45c5338bc70a2b76c916bc0f7

            SHA1

            fe06ef9cad403718e7bfcee99397200495fc1ca9

            SHA256

            9eb3c42e63a294e4338bea6efc6cbd5eee83a071a9c1ad637a93c1fdbf170d1f

            SHA512

            aee78d59c642994ca83752d7edacfcd5c9da6dea4d896432ef615e01befc66780f4dba106f3d7ee2c49b88ac8f9a3d429b5d03e8e05507a646f917f6d02b8499

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

            176KB

            MD5

            5596f366b86c4630cd69afa60b321c7c

            SHA1

            3a76288f95b362001ca05dd7f0bcde09a5aa2a69

            SHA256

            2fecf88a7c07813814b9eee92ffe3e0364214bf951a86549f576be344ae893db

            SHA512

            ef2c584322e1715ccbc4bda21ca1e0312fa2693ae5df56ed31a1b382c74aecd372a9abdb33709717f76e708e9e52476d4867a2b7fa44994a347b7f0a1f74ada7

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

            176KB

            MD5

            5596f366b86c4630cd69afa60b321c7c

            SHA1

            3a76288f95b362001ca05dd7f0bcde09a5aa2a69

            SHA256

            2fecf88a7c07813814b9eee92ffe3e0364214bf951a86549f576be344ae893db

            SHA512

            ef2c584322e1715ccbc4bda21ca1e0312fa2693ae5df56ed31a1b382c74aecd372a9abdb33709717f76e708e9e52476d4867a2b7fa44994a347b7f0a1f74ada7

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

            176KB

            MD5

            5596f366b86c4630cd69afa60b321c7c

            SHA1

            3a76288f95b362001ca05dd7f0bcde09a5aa2a69

            SHA256

            2fecf88a7c07813814b9eee92ffe3e0364214bf951a86549f576be344ae893db

            SHA512

            ef2c584322e1715ccbc4bda21ca1e0312fa2693ae5df56ed31a1b382c74aecd372a9abdb33709717f76e708e9e52476d4867a2b7fa44994a347b7f0a1f74ada7

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

            159KB

            MD5

            0b210c6cd13798a0ac11d3c89cb14d21

            SHA1

            161551d757fc7fc9bd0f9a559a696e192c6e65da

            SHA256

            60b135f87eee57fa31df4ae5359b18a9c7acec960db0fddf63f75ca3b7055787

            SHA512

            a612d20ca372984ae0657363c2002ccd66266459fc6d1b41cf6205c07a48bcbefd0705824e728e049deeb6215f13c7cb560061e309e4ab8801ddbdb128bbe7d1

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

            159KB

            MD5

            0b210c6cd13798a0ac11d3c89cb14d21

            SHA1

            161551d757fc7fc9bd0f9a559a696e192c6e65da

            SHA256

            60b135f87eee57fa31df4ae5359b18a9c7acec960db0fddf63f75ca3b7055787

            SHA512

            a612d20ca372984ae0657363c2002ccd66266459fc6d1b41cf6205c07a48bcbefd0705824e728e049deeb6215f13c7cb560061e309e4ab8801ddbdb128bbe7d1

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

            159KB

            MD5

            0b210c6cd13798a0ac11d3c89cb14d21

            SHA1

            161551d757fc7fc9bd0f9a559a696e192c6e65da

            SHA256

            60b135f87eee57fa31df4ae5359b18a9c7acec960db0fddf63f75ca3b7055787

            SHA512

            a612d20ca372984ae0657363c2002ccd66266459fc6d1b41cf6205c07a48bcbefd0705824e728e049deeb6215f13c7cb560061e309e4ab8801ddbdb128bbe7d1

          • memory/308-152-0x0000000000000000-mapping.dmp
          • memory/480-157-0x0000000000000000-mapping.dmp
          • memory/1196-141-0x0000000000000000-mapping.dmp
          • memory/2688-135-0x0000000000000000-mapping.dmp
          • memory/3472-164-0x0000000000000000-mapping.dmp
          • memory/3560-146-0x0000000000000000-mapping.dmp
          • memory/3676-158-0x0000000000000000-mapping.dmp
          • memory/4184-165-0x0000000000000000-mapping.dmp
          • memory/4688-139-0x0000000000000000-mapping.dmp
          • memory/4848-140-0x0000000000000000-mapping.dmp
          • memory/4988-136-0x0000000000000000-mapping.dmp