Analysis

  • max time kernel
    44s
  • 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 10:29

General

  • Target

    3590a7c2bad233a61f00c058ef2121006b44d827469a4d546ecc32b5c31780b1.exe

  • Size

    602KB

  • MD5

    8cfd287380d3f5e8b21e8d91a47d941c

  • SHA1

    bda91468a8a4d867605bada3d4f8103a4b224de7

  • SHA256

    3590a7c2bad233a61f00c058ef2121006b44d827469a4d546ecc32b5c31780b1

  • SHA512

    26a8c7d0a30a05784ea569efbbdd8e139669674c16d2e879d91d5c8ae825db1233d108136696836744a12310ccf6b115102568f63b2b222dae6dc8ea6065b225

  • SSDEEP

    12288:fIny5DYTgB8vz/TnuDKfM7ftRAHz46pGomRKrDQXhn48n:HUTgB4ruyMBRaz4q1iEsh48

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\3590a7c2bad233a61f00c058ef2121006b44d827469a4d546ecc32b5c31780b1.exe
    "C:\Users\Admin\AppData\Local\Temp\3590a7c2bad233a61f00c058ef2121006b44d827469a4d546ecc32b5c31780b1.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:940
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:752
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:616
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:468
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1500
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1052
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1800
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1860
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:964
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:896
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1644
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1692
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1928

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            96e1574dec2bd12ea92d595161bdb85e

            SHA1

            787c5982f8c283a4befa036fa623efcf192c4aca

            SHA256

            0f4c1f0e04ed5b297a4c410df02b8fe86c4030d3687cf73aa64e66fe9d61b2a5

            SHA512

            ca603384257f24e185b28e8a263c11fdc0a00935d7a5124a06792d274636f60c41d5cec494671abb0d45ae8cb857c83f56fa6bb2040e254ac72f1f3d23fac848

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c0c1910d6455f4a1ca9956cf0b391134

            SHA1

            15c027289edde2d861ce1c4ed2b97d2b01733415

            SHA256

            e529a9b3012e11ba6c196ccb79abb8a669c8e197e1b42d66bd5b3dcc054021d2

            SHA512

            bdd4d547d74aacd33c678cdafc9928a16c9c5dda087bfb5ac412207bc96ba2fd36d2bc4ee54da81018d98d35b0ccd4c76c0174406180f575b11718df22c6402e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e2d5f84643679f29d21ded6d2258d57c

            SHA1

            d29e7a8bfbcf829282996585a4eec4e421cbc2e0

            SHA256

            0715b8cada360b3118cc2402584ece9a328c18521f9c11000aea0ead0b95fe42

            SHA512

            b0aabbeafedfffdec40f8e1bdd1504250b439ad0b9c92c16c934420d0cd5d6d98d0ae08f4f27daeeff6f246b9b8bde87e960f3aa124851e73c757a9d9055343c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ce0a62abc71e3fed199105c9e89d0c6c

            SHA1

            ba4a8afdef0c72313dcc49301432e632078f58be

            SHA256

            fb246e8c5838a6e242066c381fe5213d974b4df8ba4503d4cdb7dfc004bc6104

            SHA512

            abd32c10735e9a89a6edebc688b41b258923dfc31083fbb6ccb32b877a1d5d69d7214aed7521b0485f874800fd0edb994e23dd439e6b47be59ab417f6615fa7b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ce0a62abc71e3fed199105c9e89d0c6c

            SHA1

            ba4a8afdef0c72313dcc49301432e632078f58be

            SHA256

            fb246e8c5838a6e242066c381fe5213d974b4df8ba4503d4cdb7dfc004bc6104

            SHA512

            abd32c10735e9a89a6edebc688b41b258923dfc31083fbb6ccb32b877a1d5d69d7214aed7521b0485f874800fd0edb994e23dd439e6b47be59ab417f6615fa7b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fc29362b6289400ea57cfc676e914c35

            SHA1

            064386c3444f34b6f8a2f628c80888c7c6b1a4bc

            SHA256

            474d216b72337c7f78b1c07172d0b089c3ae31cb1be670c72bfdebe30f6ca7ca

            SHA512

            d3b39a3dd17d840366872c44b57f01a15228cd188dcd525be711860659bcf7d965650e29efa8918d34c409c989393005f40fce61225ef1cdbaa163341e0d9fa8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fc29362b6289400ea57cfc676e914c35

            SHA1

            064386c3444f34b6f8a2f628c80888c7c6b1a4bc

            SHA256

            474d216b72337c7f78b1c07172d0b089c3ae31cb1be670c72bfdebe30f6ca7ca

            SHA512

            d3b39a3dd17d840366872c44b57f01a15228cd188dcd525be711860659bcf7d965650e29efa8918d34c409c989393005f40fce61225ef1cdbaa163341e0d9fa8

          • \Users\Admin\AppData\Local\Temp\nsjB889.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            96e1574dec2bd12ea92d595161bdb85e

            SHA1

            787c5982f8c283a4befa036fa623efcf192c4aca

            SHA256

            0f4c1f0e04ed5b297a4c410df02b8fe86c4030d3687cf73aa64e66fe9d61b2a5

            SHA512

            ca603384257f24e185b28e8a263c11fdc0a00935d7a5124a06792d274636f60c41d5cec494671abb0d45ae8cb857c83f56fa6bb2040e254ac72f1f3d23fac848

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            96e1574dec2bd12ea92d595161bdb85e

            SHA1

            787c5982f8c283a4befa036fa623efcf192c4aca

            SHA256

            0f4c1f0e04ed5b297a4c410df02b8fe86c4030d3687cf73aa64e66fe9d61b2a5

            SHA512

            ca603384257f24e185b28e8a263c11fdc0a00935d7a5124a06792d274636f60c41d5cec494671abb0d45ae8cb857c83f56fa6bb2040e254ac72f1f3d23fac848

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            96e1574dec2bd12ea92d595161bdb85e

            SHA1

            787c5982f8c283a4befa036fa623efcf192c4aca

            SHA256

            0f4c1f0e04ed5b297a4c410df02b8fe86c4030d3687cf73aa64e66fe9d61b2a5

            SHA512

            ca603384257f24e185b28e8a263c11fdc0a00935d7a5124a06792d274636f60c41d5cec494671abb0d45ae8cb857c83f56fa6bb2040e254ac72f1f3d23fac848

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c0c1910d6455f4a1ca9956cf0b391134

            SHA1

            15c027289edde2d861ce1c4ed2b97d2b01733415

            SHA256

            e529a9b3012e11ba6c196ccb79abb8a669c8e197e1b42d66bd5b3dcc054021d2

            SHA512

            bdd4d547d74aacd33c678cdafc9928a16c9c5dda087bfb5ac412207bc96ba2fd36d2bc4ee54da81018d98d35b0ccd4c76c0174406180f575b11718df22c6402e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c0c1910d6455f4a1ca9956cf0b391134

            SHA1

            15c027289edde2d861ce1c4ed2b97d2b01733415

            SHA256

            e529a9b3012e11ba6c196ccb79abb8a669c8e197e1b42d66bd5b3dcc054021d2

            SHA512

            bdd4d547d74aacd33c678cdafc9928a16c9c5dda087bfb5ac412207bc96ba2fd36d2bc4ee54da81018d98d35b0ccd4c76c0174406180f575b11718df22c6402e

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e2d5f84643679f29d21ded6d2258d57c

            SHA1

            d29e7a8bfbcf829282996585a4eec4e421cbc2e0

            SHA256

            0715b8cada360b3118cc2402584ece9a328c18521f9c11000aea0ead0b95fe42

            SHA512

            b0aabbeafedfffdec40f8e1bdd1504250b439ad0b9c92c16c934420d0cd5d6d98d0ae08f4f27daeeff6f246b9b8bde87e960f3aa124851e73c757a9d9055343c

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ce0a62abc71e3fed199105c9e89d0c6c

            SHA1

            ba4a8afdef0c72313dcc49301432e632078f58be

            SHA256

            fb246e8c5838a6e242066c381fe5213d974b4df8ba4503d4cdb7dfc004bc6104

            SHA512

            abd32c10735e9a89a6edebc688b41b258923dfc31083fbb6ccb32b877a1d5d69d7214aed7521b0485f874800fd0edb994e23dd439e6b47be59ab417f6615fa7b

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fc29362b6289400ea57cfc676e914c35

            SHA1

            064386c3444f34b6f8a2f628c80888c7c6b1a4bc

            SHA256

            474d216b72337c7f78b1c07172d0b089c3ae31cb1be670c72bfdebe30f6ca7ca

            SHA512

            d3b39a3dd17d840366872c44b57f01a15228cd188dcd525be711860659bcf7d965650e29efa8918d34c409c989393005f40fce61225ef1cdbaa163341e0d9fa8

          • memory/468-62-0x0000000000000000-mapping.dmp

          • memory/616-61-0x0000000000000000-mapping.dmp

          • memory/752-59-0x0000000000000000-mapping.dmp

          • memory/896-87-0x0000000000000000-mapping.dmp

          • memory/900-58-0x0000000000000000-mapping.dmp

          • memory/940-54-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

            Filesize

            8KB

          • memory/940-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/940-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/940-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/964-82-0x0000000000000000-mapping.dmp

          • memory/1052-71-0x0000000000000000-mapping.dmp

          • memory/1500-64-0x0000000000000000-mapping.dmp

          • memory/1644-88-0x0000000000000000-mapping.dmp

          • memory/1800-77-0x0000000000000000-mapping.dmp

          • memory/1860-81-0x0000000000000000-mapping.dmp