Analysis

  • max time kernel
    117s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:23

General

  • Target

    7338fc1b9283c2f5733bf54c8a96b6f306e2137ccb91a75619d90ef04c895a27.exe

  • Size

    603KB

  • MD5

    13f242579bf3cb435b5b0b03b3871fcc

  • SHA1

    d3edde87648b5b45fed24fbf576a0567b773a5d9

  • SHA256

    7338fc1b9283c2f5733bf54c8a96b6f306e2137ccb91a75619d90ef04c895a27

  • SHA512

    a5006f945990d3e59501acec167032f5fd2e9214736c419e800fdbdc95aac3574773a85d582094d05b706d31fa1b2e6f27d402f00fc8bd0f4ce7198d5c69b4a3

  • SSDEEP

    12288:3Iny5DYTuQSefmoqWv+r4uCRU0drd4MfwSscoI:fUTuQSeu3WvxpRJTXINcoI

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\7338fc1b9283c2f5733bf54c8a96b6f306e2137ccb91a75619d90ef04c895a27.exe
    "C:\Users\Admin\AppData\Local\Temp\7338fc1b9283c2f5733bf54c8a96b6f306e2137ccb91a75619d90ef04c895a27.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:1340
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1028
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1480
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:332
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1652
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1888
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1104
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:752
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1632
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:924
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1972
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2004
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1804
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:964

          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:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            b91012e85c1e5a024b39d0ca65567709

            SHA1

            c580d92064e614cc7b4290e49ee4a5f905b1f73c

            SHA256

            9e8e75e31013c3416dfc98511d0c1ed856749a893441d7f7c5d43d6fe42fe23d

            SHA512

            ac027752ca274eaaa206e98118ad74a5990410675f8dbbe4a9aaa4e806531edbc746f48d7ad5bb2f73a4c70ab0edfc18738cef890b5dbb37061a6e18c152bcc6

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

            244KB

            MD5

            db44574ed71071e04540311393cb8845

            SHA1

            e39c4d2a621c89b08bd973f9158f44b312d81b1f

            SHA256

            a5bc1da159bb66b7adef729ae0efe318a635e74328106cee07fd4dcd8327aa56

            SHA512

            0dd2a4868223eb534ab5b8882466e87d4dfe18c1a35a9b7ea262b64c1a6ee06e9a401f24062e4c94c1eb35c906ade5147673b7fba99f43d85372f3bb5bffaa4c

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

            108KB

            MD5

            6b09cb16a1d9e28e167188c1ab54752d

            SHA1

            5b11739cd919e3a8f9736018d715f7ac6af95c90

            SHA256

            5239761692f521bce306ebb109c9458535f99bcc2d9ffcca847d935de8a78cc0

            SHA512

            67938ada1dd524e656cc571e42434af8b12c35e41758ed551db4c5d3870ba16b02ac1e72a7b5cac38d6cc00340190ff65dc2a02d4521d0d9ba657b51e1c6baf3

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

            176KB

            MD5

            4394f69f529c8d5ffd3a3b2a88e21313

            SHA1

            8d00e87631199335126782cb68f05ebbfd7b2c5a

            SHA256

            37de5f123034bf5f84d3d0ec1fa5bf67eec362f0c135fa85d09bf1da37fb2eb9

            SHA512

            0b332fa4313c10774cf9ec9563eb712fbf9b83ab2825ff4867095234f678cd23be8e44f43a42367141c47ff0608d742733d1727747d99f240cef9c5ab89e385a

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

            176KB

            MD5

            4394f69f529c8d5ffd3a3b2a88e21313

            SHA1

            8d00e87631199335126782cb68f05ebbfd7b2c5a

            SHA256

            37de5f123034bf5f84d3d0ec1fa5bf67eec362f0c135fa85d09bf1da37fb2eb9

            SHA512

            0b332fa4313c10774cf9ec9563eb712fbf9b83ab2825ff4867095234f678cd23be8e44f43a42367141c47ff0608d742733d1727747d99f240cef9c5ab89e385a

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

            158KB

            MD5

            bd2bce36cb934e03a07f3baadb766b2a

            SHA1

            258afeca0a989808a1204aecf5185bb8cd519790

            SHA256

            62d6578a26bee4bbbc6e1540f9f67e859313be8b55c84de98aaaa1629c9bd95d

            SHA512

            1d99afcfdaaca2f3858330c6a44b753339f8f16128e446d71aabbdb0d942cfff03e08461662e07ed7e09cc1139f9da9c804fd2a31f11dbe007012872258b6a53

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

            158KB

            MD5

            bd2bce36cb934e03a07f3baadb766b2a

            SHA1

            258afeca0a989808a1204aecf5185bb8cd519790

            SHA256

            62d6578a26bee4bbbc6e1540f9f67e859313be8b55c84de98aaaa1629c9bd95d

            SHA512

            1d99afcfdaaca2f3858330c6a44b753339f8f16128e446d71aabbdb0d942cfff03e08461662e07ed7e09cc1139f9da9c804fd2a31f11dbe007012872258b6a53

          • \Users\Admin\AppData\Local\Temp\nseE582.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseE582.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseE582.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseE582.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseE582.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            b91012e85c1e5a024b39d0ca65567709

            SHA1

            c580d92064e614cc7b4290e49ee4a5f905b1f73c

            SHA256

            9e8e75e31013c3416dfc98511d0c1ed856749a893441d7f7c5d43d6fe42fe23d

            SHA512

            ac027752ca274eaaa206e98118ad74a5990410675f8dbbe4a9aaa4e806531edbc746f48d7ad5bb2f73a4c70ab0edfc18738cef890b5dbb37061a6e18c152bcc6

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            b91012e85c1e5a024b39d0ca65567709

            SHA1

            c580d92064e614cc7b4290e49ee4a5f905b1f73c

            SHA256

            9e8e75e31013c3416dfc98511d0c1ed856749a893441d7f7c5d43d6fe42fe23d

            SHA512

            ac027752ca274eaaa206e98118ad74a5990410675f8dbbe4a9aaa4e806531edbc746f48d7ad5bb2f73a4c70ab0edfc18738cef890b5dbb37061a6e18c152bcc6

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            b91012e85c1e5a024b39d0ca65567709

            SHA1

            c580d92064e614cc7b4290e49ee4a5f905b1f73c

            SHA256

            9e8e75e31013c3416dfc98511d0c1ed856749a893441d7f7c5d43d6fe42fe23d

            SHA512

            ac027752ca274eaaa206e98118ad74a5990410675f8dbbe4a9aaa4e806531edbc746f48d7ad5bb2f73a4c70ab0edfc18738cef890b5dbb37061a6e18c152bcc6

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            db44574ed71071e04540311393cb8845

            SHA1

            e39c4d2a621c89b08bd973f9158f44b312d81b1f

            SHA256

            a5bc1da159bb66b7adef729ae0efe318a635e74328106cee07fd4dcd8327aa56

            SHA512

            0dd2a4868223eb534ab5b8882466e87d4dfe18c1a35a9b7ea262b64c1a6ee06e9a401f24062e4c94c1eb35c906ade5147673b7fba99f43d85372f3bb5bffaa4c

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            db44574ed71071e04540311393cb8845

            SHA1

            e39c4d2a621c89b08bd973f9158f44b312d81b1f

            SHA256

            a5bc1da159bb66b7adef729ae0efe318a635e74328106cee07fd4dcd8327aa56

            SHA512

            0dd2a4868223eb534ab5b8882466e87d4dfe18c1a35a9b7ea262b64c1a6ee06e9a401f24062e4c94c1eb35c906ade5147673b7fba99f43d85372f3bb5bffaa4c

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            6b09cb16a1d9e28e167188c1ab54752d

            SHA1

            5b11739cd919e3a8f9736018d715f7ac6af95c90

            SHA256

            5239761692f521bce306ebb109c9458535f99bcc2d9ffcca847d935de8a78cc0

            SHA512

            67938ada1dd524e656cc571e42434af8b12c35e41758ed551db4c5d3870ba16b02ac1e72a7b5cac38d6cc00340190ff65dc2a02d4521d0d9ba657b51e1c6baf3

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            4394f69f529c8d5ffd3a3b2a88e21313

            SHA1

            8d00e87631199335126782cb68f05ebbfd7b2c5a

            SHA256

            37de5f123034bf5f84d3d0ec1fa5bf67eec362f0c135fa85d09bf1da37fb2eb9

            SHA512

            0b332fa4313c10774cf9ec9563eb712fbf9b83ab2825ff4867095234f678cd23be8e44f43a42367141c47ff0608d742733d1727747d99f240cef9c5ab89e385a

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            bd2bce36cb934e03a07f3baadb766b2a

            SHA1

            258afeca0a989808a1204aecf5185bb8cd519790

            SHA256

            62d6578a26bee4bbbc6e1540f9f67e859313be8b55c84de98aaaa1629c9bd95d

            SHA512

            1d99afcfdaaca2f3858330c6a44b753339f8f16128e446d71aabbdb0d942cfff03e08461662e07ed7e09cc1139f9da9c804fd2a31f11dbe007012872258b6a53

          • memory/332-60-0x0000000000000000-mapping.dmp
          • memory/752-77-0x0000000000000000-mapping.dmp
          • memory/924-82-0x0000000000000000-mapping.dmp
          • memory/1028-57-0x0000000000000000-mapping.dmp
          • memory/1104-71-0x0000000000000000-mapping.dmp
          • memory/1340-54-0x0000000075011000-0x0000000075013000-memory.dmp
            Filesize

            8KB

          • memory/1340-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1340-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1340-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1480-58-0x0000000000000000-mapping.dmp
          • memory/1632-81-0x0000000000000000-mapping.dmp
          • memory/1652-61-0x0000000000000000-mapping.dmp
          • memory/1888-64-0x0000000000000000-mapping.dmp
          • memory/1972-87-0x0000000000000000-mapping.dmp
          • memory/2004-88-0x0000000000000000-mapping.dmp