Analysis

  • max time kernel
    48s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 22:19

General

  • Target

    37a2ae2051e7879e5bb7457786d4990da4306ceeaf943e078b7dc9081d9cf196.exe

  • Size

    562KB

  • MD5

    50df2352d8d1d223f651467157e03c16

  • SHA1

    1f94ec4d79516c4b0d0e41eb7559615ec007369b

  • SHA256

    37a2ae2051e7879e5bb7457786d4990da4306ceeaf943e078b7dc9081d9cf196

  • SHA512

    000f2aabfd7809da031a752140e016d1529d6a828c4e8179a3bf7a3b98ccf259fffff500ea9bb6cd7fa8fd6e8d3a361ce0563878720292e3546e47a2a6f04f49

  • SSDEEP

    12288:VPRYzJbfGkPvGg85WqOxmi0waAbxxUMIoII/vNIv1+:cz9f7XGgXnOAtxRqI/lY1

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\37a2ae2051e7879e5bb7457786d4990da4306ceeaf943e078b7dc9081d9cf196.exe
    "C:\Users\Admin\AppData\Local\Temp\37a2ae2051e7879e5bb7457786d4990da4306ceeaf943e078b7dc9081d9cf196.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:1796
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:948
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1484
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1476
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:340
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:872
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:292
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1264
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1040
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1420
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1528
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1224
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1048
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1056

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            db34ae5ab86f64c29cf48bdfaf32b93d

            SHA1

            799d4778ef2179c75bb763c1f5e720d4a1c35a2e

            SHA256

            0f8b7bf9776935968751ef3f9a2d6d961ceff093912404292f559eba593efdb8

            SHA512

            fe0cf367af29ea220c01ef24c499b71354aa31e007c1c2a358ea64877f5a537e7b7ba2c8a46f1680d0945a79edb209ca02cdf323284dae9e0c0eb2237f284aba

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            755f7ee40a340e468a44ce19c7e570d6

            SHA1

            bd2b7a3544387a96629e30f0cc3a86d2be8c7eb1

            SHA256

            a265e6fb4f74d1a94c96270e865498d25758efe0efb400a74123ad9669857651

            SHA512

            694f4e3fb0fb2130e26665870937ec26f7d25d66b84ffd1d54cb4efeac4c46141db627a5b9d57403e51d9549e9bd73808849cb3b7ad18c54b7aa1750edfef013

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3e4dcb04fed9e799aa3750dae363e769

            SHA1

            46ba7436cc972fc65122383ae624b21c4f6d8b36

            SHA256

            61b975bbb320ff70086eb5cb6504f240e302b9638e10d5b469b61e40b9a55273

            SHA512

            4cbe15d1a7c83545072a1168700ba100829343d6c5903fc4f0a601e3264eeb99c6efee30bff9ec2078d1eb18c4af19c7cfb1d0b376d5676b7c3010c8a250f0a0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ac58c12aa3c04514c6fa22cbf93f404b

            SHA1

            253f7c6c825c26e09fed43ff55e924c8f0ccb768

            SHA256

            3d17b22d7dc053b63495ac72bd8df18d4b7ab71048d52cb102bf1db6c8a28048

            SHA512

            ba2fba9d8018ba86d9b57897804679f1df29bad613895ba885f2d7458737e659cf50ab5014fd8aa0a1a8580d5742a00e2f5834372b392b452bf4ac934de64956

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ac58c12aa3c04514c6fa22cbf93f404b

            SHA1

            253f7c6c825c26e09fed43ff55e924c8f0ccb768

            SHA256

            3d17b22d7dc053b63495ac72bd8df18d4b7ab71048d52cb102bf1db6c8a28048

            SHA512

            ba2fba9d8018ba86d9b57897804679f1df29bad613895ba885f2d7458737e659cf50ab5014fd8aa0a1a8580d5742a00e2f5834372b392b452bf4ac934de64956

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            4a96da0231687e7d17d457f2b4c15c89

            SHA1

            8b6bdb4e862e42fea34fa0be1b30a9616b6d88a3

            SHA256

            d0ef4a03a77834311b7569f6c9079dd23a89db2753ceccd356a274ee0691956b

            SHA512

            db9741442e6ec5d1551d0b1662e625535842992b837dcfb779fdb4c23cc156fb8cc4ee884f0f76f44bc0e9e4b668f3528893c69924fe6d5b778904697074725b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            4a96da0231687e7d17d457f2b4c15c89

            SHA1

            8b6bdb4e862e42fea34fa0be1b30a9616b6d88a3

            SHA256

            d0ef4a03a77834311b7569f6c9079dd23a89db2753ceccd356a274ee0691956b

            SHA512

            db9741442e6ec5d1551d0b1662e625535842992b837dcfb779fdb4c23cc156fb8cc4ee884f0f76f44bc0e9e4b668f3528893c69924fe6d5b778904697074725b

          • \Users\Admin\AppData\Local\Temp\nst5B8B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst5B8B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst5B8B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst5B8B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst5B8B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            db34ae5ab86f64c29cf48bdfaf32b93d

            SHA1

            799d4778ef2179c75bb763c1f5e720d4a1c35a2e

            SHA256

            0f8b7bf9776935968751ef3f9a2d6d961ceff093912404292f559eba593efdb8

            SHA512

            fe0cf367af29ea220c01ef24c499b71354aa31e007c1c2a358ea64877f5a537e7b7ba2c8a46f1680d0945a79edb209ca02cdf323284dae9e0c0eb2237f284aba

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            db34ae5ab86f64c29cf48bdfaf32b93d

            SHA1

            799d4778ef2179c75bb763c1f5e720d4a1c35a2e

            SHA256

            0f8b7bf9776935968751ef3f9a2d6d961ceff093912404292f559eba593efdb8

            SHA512

            fe0cf367af29ea220c01ef24c499b71354aa31e007c1c2a358ea64877f5a537e7b7ba2c8a46f1680d0945a79edb209ca02cdf323284dae9e0c0eb2237f284aba

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            db34ae5ab86f64c29cf48bdfaf32b93d

            SHA1

            799d4778ef2179c75bb763c1f5e720d4a1c35a2e

            SHA256

            0f8b7bf9776935968751ef3f9a2d6d961ceff093912404292f559eba593efdb8

            SHA512

            fe0cf367af29ea220c01ef24c499b71354aa31e007c1c2a358ea64877f5a537e7b7ba2c8a46f1680d0945a79edb209ca02cdf323284dae9e0c0eb2237f284aba

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            755f7ee40a340e468a44ce19c7e570d6

            SHA1

            bd2b7a3544387a96629e30f0cc3a86d2be8c7eb1

            SHA256

            a265e6fb4f74d1a94c96270e865498d25758efe0efb400a74123ad9669857651

            SHA512

            694f4e3fb0fb2130e26665870937ec26f7d25d66b84ffd1d54cb4efeac4c46141db627a5b9d57403e51d9549e9bd73808849cb3b7ad18c54b7aa1750edfef013

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            755f7ee40a340e468a44ce19c7e570d6

            SHA1

            bd2b7a3544387a96629e30f0cc3a86d2be8c7eb1

            SHA256

            a265e6fb4f74d1a94c96270e865498d25758efe0efb400a74123ad9669857651

            SHA512

            694f4e3fb0fb2130e26665870937ec26f7d25d66b84ffd1d54cb4efeac4c46141db627a5b9d57403e51d9549e9bd73808849cb3b7ad18c54b7aa1750edfef013

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3e4dcb04fed9e799aa3750dae363e769

            SHA1

            46ba7436cc972fc65122383ae624b21c4f6d8b36

            SHA256

            61b975bbb320ff70086eb5cb6504f240e302b9638e10d5b469b61e40b9a55273

            SHA512

            4cbe15d1a7c83545072a1168700ba100829343d6c5903fc4f0a601e3264eeb99c6efee30bff9ec2078d1eb18c4af19c7cfb1d0b376d5676b7c3010c8a250f0a0

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ac58c12aa3c04514c6fa22cbf93f404b

            SHA1

            253f7c6c825c26e09fed43ff55e924c8f0ccb768

            SHA256

            3d17b22d7dc053b63495ac72bd8df18d4b7ab71048d52cb102bf1db6c8a28048

            SHA512

            ba2fba9d8018ba86d9b57897804679f1df29bad613895ba885f2d7458737e659cf50ab5014fd8aa0a1a8580d5742a00e2f5834372b392b452bf4ac934de64956

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            4a96da0231687e7d17d457f2b4c15c89

            SHA1

            8b6bdb4e862e42fea34fa0be1b30a9616b6d88a3

            SHA256

            d0ef4a03a77834311b7569f6c9079dd23a89db2753ceccd356a274ee0691956b

            SHA512

            db9741442e6ec5d1551d0b1662e625535842992b837dcfb779fdb4c23cc156fb8cc4ee884f0f76f44bc0e9e4b668f3528893c69924fe6d5b778904697074725b

          • memory/1796-54-0x0000000075C81000-0x0000000075C83000-memory.dmp

            Filesize

            8KB

          • memory/1796-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1796-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1796-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB