Analysis

  • max time kernel
    65s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:24

General

  • Target

    647b953910dda8e8465599aff3e38176e7ee4395d0cb41d625df8cf37b1c64c8.exe

  • Size

    603KB

  • MD5

    bc5d0f6f6d7c486af8cd04515e450409

  • SHA1

    528f96481e0a39f61d64a8297b877c65bb42cecb

  • SHA256

    647b953910dda8e8465599aff3e38176e7ee4395d0cb41d625df8cf37b1c64c8

  • SHA512

    b77e62d5789a6f969654beea67cb18d13b20baf0cac2ae614b4d4c1e07d3d7fbb5a9aac667861b2192a5083b4333ca5502d851e623796b35f5b49a7c9df1bb53

  • SSDEEP

    12288:QIny5DYT6rAd42CYeK1P1bXYs45T5ymCPY/bi6ahZG:uUT6rAd/53LaymCQ/bIG

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\647b953910dda8e8465599aff3e38176e7ee4395d0cb41d625df8cf37b1c64c8.exe
    "C:\Users\Admin\AppData\Local\Temp\647b953910dda8e8465599aff3e38176e7ee4395d0cb41d625df8cf37b1c64c8.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:1152
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1376
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:588
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1056
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1908
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1904
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1548
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2000
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1704
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1824
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1968
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:840
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1520
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:608

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9d074df6b421c1a2cf326cbbefd36c4e

            SHA1

            4a1c7079bcba5b74ba08b3b7d068a0c3b5a588ff

            SHA256

            bd3cbe12ab4ae68a853fa058954dfefe49bf67967c72c7eaf4611503f3490614

            SHA512

            257f6e90019d9dc637d3c7292dba1043964a1331aaa4973366f481dcfb43e2cbf3bbaf7a5170c066068ae605948b852b36299421959b6bd03f94fe52f5475bd0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            43d9ffde1e00ee3768af7050ce6680d3

            SHA1

            968084d1e381b0af7d3e83eec01a20cc89546545

            SHA256

            8d233806e700a0b47f036a9f927cb0acae0ef6f7ae2bb3cb7794e224ae9fc47a

            SHA512

            3018c246302a042e36a1220f86e78efebfe0bb9c27bd768164638b56795ff3bce13ccd9341e1f0850ad2a1e50aaee9c2fd9818a56f4826fe3d7d379b0a6b03e7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            32cdc17a510706e4bd1445f9191f902b

            SHA1

            65f21feebd4c589dcd937ae061fdd8bc75785f83

            SHA256

            b70cd745f1fbd064124da390a66bbc303177f58ec8fe88ec88eee4a58705d895

            SHA512

            d147f257cb56ce59e61a71f8d84a7f2a5c4c29780a907403326ed7ca4fea582aad64e8dfebe31c25a548900c52a2084fa4e88fac93747b1c4c9672709c6607a8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            32c804eed6bb3c0be0c87fa9e6f58ef0

            SHA1

            f49055a1ce7a3f56311924d90409479ad41f76c0

            SHA256

            5c1037bee07536a48f922d9ffeeb7d146d466d2180dec3e8419be62d8df0dd71

            SHA512

            cf70c302c6d2e91b929e5026874d777aabd80ed6de030fc71911512a9a20049d04e6945cdb868dfd70096feaf13f362418b8ad97fb909d634acb6676071c2c92

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            32c804eed6bb3c0be0c87fa9e6f58ef0

            SHA1

            f49055a1ce7a3f56311924d90409479ad41f76c0

            SHA256

            5c1037bee07536a48f922d9ffeeb7d146d466d2180dec3e8419be62d8df0dd71

            SHA512

            cf70c302c6d2e91b929e5026874d777aabd80ed6de030fc71911512a9a20049d04e6945cdb868dfd70096feaf13f362418b8ad97fb909d634acb6676071c2c92

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            7e35fafe0b7d5d36e71912c018f7b897

            SHA1

            6a6e70d70f50a3111bb2693add1d794c08748c0d

            SHA256

            fbc019a259a614e7c3feccaebc7cf46bb92b7ffbbcb0e40fd8dd97c2ced25eaf

            SHA512

            ddc4f799380b1d7f6bfef973ac0c43df190a7e80ac729e4ed623039f140a862a916fe2d6da802368540ea797395fbcfe1ffe4c6dd5a08ad902985013255222ee

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            7e35fafe0b7d5d36e71912c018f7b897

            SHA1

            6a6e70d70f50a3111bb2693add1d794c08748c0d

            SHA256

            fbc019a259a614e7c3feccaebc7cf46bb92b7ffbbcb0e40fd8dd97c2ced25eaf

            SHA512

            ddc4f799380b1d7f6bfef973ac0c43df190a7e80ac729e4ed623039f140a862a916fe2d6da802368540ea797395fbcfe1ffe4c6dd5a08ad902985013255222ee

          • \Users\Admin\AppData\Local\Temp\nst53ED.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst53ED.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst53ED.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst53ED.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst53ED.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9d074df6b421c1a2cf326cbbefd36c4e

            SHA1

            4a1c7079bcba5b74ba08b3b7d068a0c3b5a588ff

            SHA256

            bd3cbe12ab4ae68a853fa058954dfefe49bf67967c72c7eaf4611503f3490614

            SHA512

            257f6e90019d9dc637d3c7292dba1043964a1331aaa4973366f481dcfb43e2cbf3bbaf7a5170c066068ae605948b852b36299421959b6bd03f94fe52f5475bd0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9d074df6b421c1a2cf326cbbefd36c4e

            SHA1

            4a1c7079bcba5b74ba08b3b7d068a0c3b5a588ff

            SHA256

            bd3cbe12ab4ae68a853fa058954dfefe49bf67967c72c7eaf4611503f3490614

            SHA512

            257f6e90019d9dc637d3c7292dba1043964a1331aaa4973366f481dcfb43e2cbf3bbaf7a5170c066068ae605948b852b36299421959b6bd03f94fe52f5475bd0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9d074df6b421c1a2cf326cbbefd36c4e

            SHA1

            4a1c7079bcba5b74ba08b3b7d068a0c3b5a588ff

            SHA256

            bd3cbe12ab4ae68a853fa058954dfefe49bf67967c72c7eaf4611503f3490614

            SHA512

            257f6e90019d9dc637d3c7292dba1043964a1331aaa4973366f481dcfb43e2cbf3bbaf7a5170c066068ae605948b852b36299421959b6bd03f94fe52f5475bd0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            43d9ffde1e00ee3768af7050ce6680d3

            SHA1

            968084d1e381b0af7d3e83eec01a20cc89546545

            SHA256

            8d233806e700a0b47f036a9f927cb0acae0ef6f7ae2bb3cb7794e224ae9fc47a

            SHA512

            3018c246302a042e36a1220f86e78efebfe0bb9c27bd768164638b56795ff3bce13ccd9341e1f0850ad2a1e50aaee9c2fd9818a56f4826fe3d7d379b0a6b03e7

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            43d9ffde1e00ee3768af7050ce6680d3

            SHA1

            968084d1e381b0af7d3e83eec01a20cc89546545

            SHA256

            8d233806e700a0b47f036a9f927cb0acae0ef6f7ae2bb3cb7794e224ae9fc47a

            SHA512

            3018c246302a042e36a1220f86e78efebfe0bb9c27bd768164638b56795ff3bce13ccd9341e1f0850ad2a1e50aaee9c2fd9818a56f4826fe3d7d379b0a6b03e7

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            32cdc17a510706e4bd1445f9191f902b

            SHA1

            65f21feebd4c589dcd937ae061fdd8bc75785f83

            SHA256

            b70cd745f1fbd064124da390a66bbc303177f58ec8fe88ec88eee4a58705d895

            SHA512

            d147f257cb56ce59e61a71f8d84a7f2a5c4c29780a907403326ed7ca4fea582aad64e8dfebe31c25a548900c52a2084fa4e88fac93747b1c4c9672709c6607a8

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            32c804eed6bb3c0be0c87fa9e6f58ef0

            SHA1

            f49055a1ce7a3f56311924d90409479ad41f76c0

            SHA256

            5c1037bee07536a48f922d9ffeeb7d146d466d2180dec3e8419be62d8df0dd71

            SHA512

            cf70c302c6d2e91b929e5026874d777aabd80ed6de030fc71911512a9a20049d04e6945cdb868dfd70096feaf13f362418b8ad97fb909d634acb6676071c2c92

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            7e35fafe0b7d5d36e71912c018f7b897

            SHA1

            6a6e70d70f50a3111bb2693add1d794c08748c0d

            SHA256

            fbc019a259a614e7c3feccaebc7cf46bb92b7ffbbcb0e40fd8dd97c2ced25eaf

            SHA512

            ddc4f799380b1d7f6bfef973ac0c43df190a7e80ac729e4ed623039f140a862a916fe2d6da802368540ea797395fbcfe1ffe4c6dd5a08ad902985013255222ee

          • memory/588-59-0x0000000000000000-mapping.dmp

          • memory/840-88-0x0000000000000000-mapping.dmp

          • memory/1056-61-0x0000000000000000-mapping.dmp

          • memory/1152-54-0x0000000075881000-0x0000000075883000-memory.dmp

            Filesize

            8KB

          • memory/1152-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1152-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1152-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1376-58-0x0000000000000000-mapping.dmp

          • memory/1548-71-0x0000000000000000-mapping.dmp

          • memory/1704-81-0x0000000000000000-mapping.dmp

          • memory/1824-82-0x0000000000000000-mapping.dmp

          • memory/1904-64-0x0000000000000000-mapping.dmp

          • memory/1908-62-0x0000000000000000-mapping.dmp

          • memory/1968-87-0x0000000000000000-mapping.dmp

          • memory/2000-77-0x0000000000000000-mapping.dmp