Analysis

  • max time kernel
    44s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:27

General

  • Target

    486865cb5bda9342f24bcb30528b809775b6d3626da73e215b1ba5831dcbefdd.exe

  • Size

    603KB

  • MD5

    41eaa1ec43372ad14f6afe5ee1e05b3c

  • SHA1

    ed090a599a241d30381db932e0ee491d9b8c8f37

  • SHA256

    486865cb5bda9342f24bcb30528b809775b6d3626da73e215b1ba5831dcbefdd

  • SHA512

    b6078c38be17487971b1f1fbe9efeb7e12b33580831e6467b47306237d46e900207a61910ecca0995c9e7d0c19e47f97d4a1a05cbef4b9de95bec7c0499c32ce

  • SSDEEP

    12288:UIny5DYTmICKdnQXfWlU/cx5jzrJYExDl+bnH/4he7jqz52Q7I:SUTmJL8jHJYnh7uz5/

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\486865cb5bda9342f24bcb30528b809775b6d3626da73e215b1ba5831dcbefdd.exe
    "C:\Users\Admin\AppData\Local\Temp\486865cb5bda9342f24bcb30528b809775b6d3626da73e215b1ba5831dcbefdd.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:2032
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:828
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2012
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:368
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:560
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1728
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:516
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1788
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1948
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1956
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:640
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1392
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1744
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1684

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c2c6845917628708d58ca0b28e12ffc8

            SHA1

            f47e30f7c0f8cd632d1606a0c091c9bacd038659

            SHA256

            d37648d5c062f4f1ac1faae505b6a34f96f0bd530c3bd93240d04941b8dff3f3

            SHA512

            db433aa12acead1b51937fe0c074486aed18ba53ec53e6d3fea5603cc3b806c37f64e39f9f05b599ffe8a086b32ad7a140250b77a0cb7cdf9f96e4891a5a224b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1fa2ede282fd24bc50359445f06ba2ef

            SHA1

            758a4c6222d89042d89671c8df0c214ac201c5a3

            SHA256

            248866baf258f86d8202200ee18528d779924ee011db330c6dcec05f8ec42224

            SHA512

            c5a615c36929138bcfbafcb17f990f99fce2c36fad04a44bbe127832c53c3e8c72b40a54b9fa47a469d58364cfc5397af549240a500630f98b9f9cca2a20c91a

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e8ee0b0888e9a1f5301b7924e228dcaf

            SHA1

            3b8f09337b6dcb64d47f0bd7ec6c38b15fdcca77

            SHA256

            4a8773f9cbcb8b68bef8622b432b6ea9c9c25ee293289eae3cf03d9abb05eb26

            SHA512

            b1a123816b1f971a743b7e9292f4982b32714915c460de4cc161aff1f61e04d42840b9702b9ba1bca51287f2aae0d410e851f7a8b225ba173e501ab0ee37aa31

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c6cb02077050f17e423a5a44373cdf46

            SHA1

            827cd5a96b1f98236f1ab41cedeeb4f8b916c2c3

            SHA256

            e3504d8de56df5a3183c868af9989875fcee72ebf8bd58f005d68605b77715c4

            SHA512

            ac6437597f92d43767bb16b5cc890545282b9f6b50b49d8c8de642a2d3ce631a547a51a394ff42863581744d00dcbd6fdfcf9911b46b90b4c2df4966445a75d2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c6cb02077050f17e423a5a44373cdf46

            SHA1

            827cd5a96b1f98236f1ab41cedeeb4f8b916c2c3

            SHA256

            e3504d8de56df5a3183c868af9989875fcee72ebf8bd58f005d68605b77715c4

            SHA512

            ac6437597f92d43767bb16b5cc890545282b9f6b50b49d8c8de642a2d3ce631a547a51a394ff42863581744d00dcbd6fdfcf9911b46b90b4c2df4966445a75d2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            50fded46454496c1f71064be37821873

            SHA1

            0aef3ade5d31ed7915de1e2a9196a6c0a1ff386c

            SHA256

            0040fa7c7c79c2781527e4bbb4334678b16f5a2ee5031245c0b986edf3cc3261

            SHA512

            f765dc6f585504989aa840ff58b5234b74375238692a749d113d34616b57c01dd0e373d803758936ee05b6031cbe6338eafa3891aeee875fd654534fab59863c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            50fded46454496c1f71064be37821873

            SHA1

            0aef3ade5d31ed7915de1e2a9196a6c0a1ff386c

            SHA256

            0040fa7c7c79c2781527e4bbb4334678b16f5a2ee5031245c0b986edf3cc3261

            SHA512

            f765dc6f585504989aa840ff58b5234b74375238692a749d113d34616b57c01dd0e373d803758936ee05b6031cbe6338eafa3891aeee875fd654534fab59863c

          • \Users\Admin\AppData\Local\Temp\nst2F5D.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst2F5D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2F5D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2F5D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2F5D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c2c6845917628708d58ca0b28e12ffc8

            SHA1

            f47e30f7c0f8cd632d1606a0c091c9bacd038659

            SHA256

            d37648d5c062f4f1ac1faae505b6a34f96f0bd530c3bd93240d04941b8dff3f3

            SHA512

            db433aa12acead1b51937fe0c074486aed18ba53ec53e6d3fea5603cc3b806c37f64e39f9f05b599ffe8a086b32ad7a140250b77a0cb7cdf9f96e4891a5a224b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c2c6845917628708d58ca0b28e12ffc8

            SHA1

            f47e30f7c0f8cd632d1606a0c091c9bacd038659

            SHA256

            d37648d5c062f4f1ac1faae505b6a34f96f0bd530c3bd93240d04941b8dff3f3

            SHA512

            db433aa12acead1b51937fe0c074486aed18ba53ec53e6d3fea5603cc3b806c37f64e39f9f05b599ffe8a086b32ad7a140250b77a0cb7cdf9f96e4891a5a224b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c2c6845917628708d58ca0b28e12ffc8

            SHA1

            f47e30f7c0f8cd632d1606a0c091c9bacd038659

            SHA256

            d37648d5c062f4f1ac1faae505b6a34f96f0bd530c3bd93240d04941b8dff3f3

            SHA512

            db433aa12acead1b51937fe0c074486aed18ba53ec53e6d3fea5603cc3b806c37f64e39f9f05b599ffe8a086b32ad7a140250b77a0cb7cdf9f96e4891a5a224b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1fa2ede282fd24bc50359445f06ba2ef

            SHA1

            758a4c6222d89042d89671c8df0c214ac201c5a3

            SHA256

            248866baf258f86d8202200ee18528d779924ee011db330c6dcec05f8ec42224

            SHA512

            c5a615c36929138bcfbafcb17f990f99fce2c36fad04a44bbe127832c53c3e8c72b40a54b9fa47a469d58364cfc5397af549240a500630f98b9f9cca2a20c91a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1fa2ede282fd24bc50359445f06ba2ef

            SHA1

            758a4c6222d89042d89671c8df0c214ac201c5a3

            SHA256

            248866baf258f86d8202200ee18528d779924ee011db330c6dcec05f8ec42224

            SHA512

            c5a615c36929138bcfbafcb17f990f99fce2c36fad04a44bbe127832c53c3e8c72b40a54b9fa47a469d58364cfc5397af549240a500630f98b9f9cca2a20c91a

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e8ee0b0888e9a1f5301b7924e228dcaf

            SHA1

            3b8f09337b6dcb64d47f0bd7ec6c38b15fdcca77

            SHA256

            4a8773f9cbcb8b68bef8622b432b6ea9c9c25ee293289eae3cf03d9abb05eb26

            SHA512

            b1a123816b1f971a743b7e9292f4982b32714915c460de4cc161aff1f61e04d42840b9702b9ba1bca51287f2aae0d410e851f7a8b225ba173e501ab0ee37aa31

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c6cb02077050f17e423a5a44373cdf46

            SHA1

            827cd5a96b1f98236f1ab41cedeeb4f8b916c2c3

            SHA256

            e3504d8de56df5a3183c868af9989875fcee72ebf8bd58f005d68605b77715c4

            SHA512

            ac6437597f92d43767bb16b5cc890545282b9f6b50b49d8c8de642a2d3ce631a547a51a394ff42863581744d00dcbd6fdfcf9911b46b90b4c2df4966445a75d2

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            50fded46454496c1f71064be37821873

            SHA1

            0aef3ade5d31ed7915de1e2a9196a6c0a1ff386c

            SHA256

            0040fa7c7c79c2781527e4bbb4334678b16f5a2ee5031245c0b986edf3cc3261

            SHA512

            f765dc6f585504989aa840ff58b5234b74375238692a749d113d34616b57c01dd0e373d803758936ee05b6031cbe6338eafa3891aeee875fd654534fab59863c

          • memory/368-61-0x0000000000000000-mapping.dmp

          • memory/516-70-0x0000000000000000-mapping.dmp

          • memory/560-62-0x0000000000000000-mapping.dmp

          • memory/640-86-0x0000000000000000-mapping.dmp

          • memory/828-57-0x0000000000000000-mapping.dmp

          • memory/1392-87-0x0000000000000000-mapping.dmp

          • memory/1728-64-0x0000000000000000-mapping.dmp

          • memory/1788-76-0x0000000000000000-mapping.dmp

          • memory/1948-80-0x0000000000000000-mapping.dmp

          • memory/1956-81-0x0000000000000000-mapping.dmp

          • memory/2012-58-0x0000000000000000-mapping.dmp

          • memory/2032-54-0x0000000075A71000-0x0000000075A73000-memory.dmp

            Filesize

            8KB

          • memory/2032-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2032-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB