Analysis

  • max time kernel
    31s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:14

General

  • Target

    b767d25b3ede29a35dd79827d2febfb9fda6be31b4b4678f0fac968113bf3b02.exe

  • Size

    602KB

  • MD5

    370cc765ebab9c53b72d805859c28787

  • SHA1

    a2042ab2c7c6785e83108de8163b74f58a356349

  • SHA256

    b767d25b3ede29a35dd79827d2febfb9fda6be31b4b4678f0fac968113bf3b02

  • SHA512

    572c3e629add9a9277a4f022d86e01ca59b3a5e2d7a74cb17ffd8a202c75f62fc525ee860d337684f9d0c81244a4ef06f9bb18abdd5df0871c2fca16dd5b7e5a

  • SSDEEP

    12288:SIny5DYTjCArHngTTAGabLSBL7E/04LPSkzYZDh2/R8i:UUTjCiHeEa7+LPzYthK8

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\b767d25b3ede29a35dd79827d2febfb9fda6be31b4b4678f0fac968113bf3b02.exe
    "C:\Users\Admin\AppData\Local\Temp\b767d25b3ede29a35dd79827d2febfb9fda6be31b4b4678f0fac968113bf3b02.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:536
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1364
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1720
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1348
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:944
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1692
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:524
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1736
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1224
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:580
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:560
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1028
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1440
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1892

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ef344134920f3ad9847fbffdb38a380c

            SHA1

            d0700a60f693ba61dab04cf593624667a91e07b7

            SHA256

            d569c1fab763993c32650fa2dafcadf8257314920e353c8647f64ab8286fde41

            SHA512

            38f2d2c39a1d0b2a245b56b4fc7e66c475433e1ddfee74be7829229dda43b6d657736c229ca520c1fd11910a6750907aa6eacb4af723bd7a79788240c5909e41

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b18500ebbf3b1cbaa8192ebe7251a5be

            SHA1

            043870f72a537a10679bde9bf332f8d3e6f919f4

            SHA256

            8db879ddffedf0598d6e61564fee54b22691e9dd571854bccd062f008be6f0aa

            SHA512

            bdc11d3783b60fd173dbd3aca21a57f6e23aaa993bc8565525326a41876a6f09d876614500b29690f5d9f3a6273cfaecfa2aceeded2076c14d2be2443f9b9d91

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3806c29451a2bce50876b2a5eb2534ef

            SHA1

            83648ad15b284a3f1c92032bce92a86561bdef6a

            SHA256

            3dff4a8bdee716c999d85031cd41d1bfbc4d764cec1e5c207f1d7b79488854e9

            SHA512

            955a0357b4aeaa0c84c67f2fb5decd4098aa7451627dd0556b7838bb8f600e1d947bbf374f2acd1319e59227c0d63b7c524865fe488a0b5cccf21d7c918bde61

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b3ec957b305e3b3babda1caadd5c47cf

            SHA1

            5d416721e37e04ffaaeea87dbae72ff4fd2a1972

            SHA256

            07dadfd3cb85c4af697ae5f90ff1cf776cb3e650742f9eccd411970a4cf607b8

            SHA512

            b5f1f8cced388dd52274de56133ef2179ffd5ca7d541eaa880d3c8b9d1c637c62237a40673b6102e2b1383555a7ad838fa0cc56c6fae89e050d8bd67e2cab4c1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b3ec957b305e3b3babda1caadd5c47cf

            SHA1

            5d416721e37e04ffaaeea87dbae72ff4fd2a1972

            SHA256

            07dadfd3cb85c4af697ae5f90ff1cf776cb3e650742f9eccd411970a4cf607b8

            SHA512

            b5f1f8cced388dd52274de56133ef2179ffd5ca7d541eaa880d3c8b9d1c637c62237a40673b6102e2b1383555a7ad838fa0cc56c6fae89e050d8bd67e2cab4c1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            91489fb58e42121ad815b972360c7591

            SHA1

            48c9abdb587298b1543dc938a98fbb3a4b221635

            SHA256

            a39eeb0b35abd43b3231d04b218f9e504f4f1ffeb8539fea13681340ad300170

            SHA512

            92c3db8b4d9cabb0bc6dfacfaf0774698d0c6449bde8ffc9b9e022e7d8fbf817dc322cfe51b0d222c71cf6717de2495e5aa08671cfb7370ab8f90b856bc66dbe

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            91489fb58e42121ad815b972360c7591

            SHA1

            48c9abdb587298b1543dc938a98fbb3a4b221635

            SHA256

            a39eeb0b35abd43b3231d04b218f9e504f4f1ffeb8539fea13681340ad300170

            SHA512

            92c3db8b4d9cabb0bc6dfacfaf0774698d0c6449bde8ffc9b9e022e7d8fbf817dc322cfe51b0d222c71cf6717de2495e5aa08671cfb7370ab8f90b856bc66dbe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ef344134920f3ad9847fbffdb38a380c

            SHA1

            d0700a60f693ba61dab04cf593624667a91e07b7

            SHA256

            d569c1fab763993c32650fa2dafcadf8257314920e353c8647f64ab8286fde41

            SHA512

            38f2d2c39a1d0b2a245b56b4fc7e66c475433e1ddfee74be7829229dda43b6d657736c229ca520c1fd11910a6750907aa6eacb4af723bd7a79788240c5909e41

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ef344134920f3ad9847fbffdb38a380c

            SHA1

            d0700a60f693ba61dab04cf593624667a91e07b7

            SHA256

            d569c1fab763993c32650fa2dafcadf8257314920e353c8647f64ab8286fde41

            SHA512

            38f2d2c39a1d0b2a245b56b4fc7e66c475433e1ddfee74be7829229dda43b6d657736c229ca520c1fd11910a6750907aa6eacb4af723bd7a79788240c5909e41

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ef344134920f3ad9847fbffdb38a380c

            SHA1

            d0700a60f693ba61dab04cf593624667a91e07b7

            SHA256

            d569c1fab763993c32650fa2dafcadf8257314920e353c8647f64ab8286fde41

            SHA512

            38f2d2c39a1d0b2a245b56b4fc7e66c475433e1ddfee74be7829229dda43b6d657736c229ca520c1fd11910a6750907aa6eacb4af723bd7a79788240c5909e41

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b18500ebbf3b1cbaa8192ebe7251a5be

            SHA1

            043870f72a537a10679bde9bf332f8d3e6f919f4

            SHA256

            8db879ddffedf0598d6e61564fee54b22691e9dd571854bccd062f008be6f0aa

            SHA512

            bdc11d3783b60fd173dbd3aca21a57f6e23aaa993bc8565525326a41876a6f09d876614500b29690f5d9f3a6273cfaecfa2aceeded2076c14d2be2443f9b9d91

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b18500ebbf3b1cbaa8192ebe7251a5be

            SHA1

            043870f72a537a10679bde9bf332f8d3e6f919f4

            SHA256

            8db879ddffedf0598d6e61564fee54b22691e9dd571854bccd062f008be6f0aa

            SHA512

            bdc11d3783b60fd173dbd3aca21a57f6e23aaa993bc8565525326a41876a6f09d876614500b29690f5d9f3a6273cfaecfa2aceeded2076c14d2be2443f9b9d91

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3806c29451a2bce50876b2a5eb2534ef

            SHA1

            83648ad15b284a3f1c92032bce92a86561bdef6a

            SHA256

            3dff4a8bdee716c999d85031cd41d1bfbc4d764cec1e5c207f1d7b79488854e9

            SHA512

            955a0357b4aeaa0c84c67f2fb5decd4098aa7451627dd0556b7838bb8f600e1d947bbf374f2acd1319e59227c0d63b7c524865fe488a0b5cccf21d7c918bde61

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b3ec957b305e3b3babda1caadd5c47cf

            SHA1

            5d416721e37e04ffaaeea87dbae72ff4fd2a1972

            SHA256

            07dadfd3cb85c4af697ae5f90ff1cf776cb3e650742f9eccd411970a4cf607b8

            SHA512

            b5f1f8cced388dd52274de56133ef2179ffd5ca7d541eaa880d3c8b9d1c637c62237a40673b6102e2b1383555a7ad838fa0cc56c6fae89e050d8bd67e2cab4c1

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            91489fb58e42121ad815b972360c7591

            SHA1

            48c9abdb587298b1543dc938a98fbb3a4b221635

            SHA256

            a39eeb0b35abd43b3231d04b218f9e504f4f1ffeb8539fea13681340ad300170

            SHA512

            92c3db8b4d9cabb0bc6dfacfaf0774698d0c6449bde8ffc9b9e022e7d8fbf817dc322cfe51b0d222c71cf6717de2495e5aa08671cfb7370ab8f90b856bc66dbe

          • memory/524-70-0x0000000000000000-mapping.dmp

          • memory/536-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

            Filesize

            8KB

          • memory/536-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/536-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/560-86-0x0000000000000000-mapping.dmp

          • memory/580-81-0x0000000000000000-mapping.dmp

          • memory/944-62-0x0000000000000000-mapping.dmp

          • memory/1028-87-0x0000000000000000-mapping.dmp

          • memory/1224-80-0x0000000000000000-mapping.dmp

          • memory/1348-61-0x0000000000000000-mapping.dmp

          • memory/1364-57-0x0000000000000000-mapping.dmp

          • memory/1692-64-0x0000000000000000-mapping.dmp

          • memory/1720-58-0x0000000000000000-mapping.dmp

          • memory/1736-76-0x0000000000000000-mapping.dmp