Analysis

  • max time kernel
    63s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

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

General

  • Target

    dd94b479133e590935b79b26820bb116b33ba3bbce05129c37002a88a286d33e.exe

  • Size

    603KB

  • MD5

    284d32896bc0d5bedb05e88ad1450071

  • SHA1

    51379446e8e2bd75a82b068ba9e6fac18e15dcb3

  • SHA256

    dd94b479133e590935b79b26820bb116b33ba3bbce05129c37002a88a286d33e

  • SHA512

    3bb176e46c70e8fd7ca5dfc92b27c6660271af4fca645e43eba8d8884b81711d7cfd6175bcb3d0332df8f6e1333a61080ff4d9a902992aacf2799e7e052117fd

  • SSDEEP

    12288:1Iny5DYTS9CvFvShyP35UCWRdt+Z8kC7C69Nrl8Y6sQ4LQ:BUTS9CFvJncag991ltEoQ

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\dd94b479133e590935b79b26820bb116b33ba3bbce05129c37002a88a286d33e.exe
    "C:\Users\Admin\AppData\Local\Temp\dd94b479133e590935b79b26820bb116b33ba3bbce05129c37002a88a286d33e.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:2040
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1972
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:568
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1160
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:520
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1088
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1040
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1748
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1764
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1676
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1432
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1376
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1548
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1324

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            665c8cff7ea1970bc39edd26aee99a87

            SHA1

            0c6c3b674d71097c4241750346d8c5930d8b87cd

            SHA256

            ff2acf9d6e9afa41a4ee0fa9b57d21bc911636364d06c61abea08f2a13d7eefc

            SHA512

            e886cdd95512f85b09ff33db4633d0865c48967b2378ffa9852e4f6d20308b27d4f376dc829124a9d4b127b58a758ae2406d3809240f0a353a2f18fe8869781b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            b3e7d8b865b2cf29b416a9d297bffc8d

            SHA1

            849564c628120cd8fab22503e98809c795c7d3ba

            SHA256

            6de55faaf666137238474499fa3aa9400c80e330cfba93da4f8582f8e6425c2a

            SHA512

            f2971204ef8469d73109bfa5b46286a5fb496925b4bcae06e8fecd05dea5e4d934f0a3e4e0b68f0fabe29eb1642937662d46e7c1d7fea273fefbbc730fb96bb1

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b429cc3ec1510e5e787be865e3a9329c

            SHA1

            387b67446269ab54d32a8bcf04990f4e6347f106

            SHA256

            5644e5b273f4cb7551b532e6eedfcd167417146d3dcd63d92d25b3482c54c5d0

            SHA512

            99d894d091b1e3cfe0557105cf3dcfc3bc5b2e221d43aa62c3bd20b6a72bea0432befbab1f74c69c9a60204d10125f3745c4fdf29f8a54ff674362a67411ce10

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aa339a356a8e0c80bb148972f5507fa1

            SHA1

            c417038dece0e05f19fc0212654a24787b974cd5

            SHA256

            3df14599adc17bebf2eb984202394319dac7155b715c8d9f8dc1554c4d99d90b

            SHA512

            816854ef1982b7521122a3e25a033efbad3f0e7b1e8fc7263f7325dc3280865e38c7a1d360b95dc0cc2e1bfe6b346c22c117e23cf27e3bd91b70b137866ce30c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aa339a356a8e0c80bb148972f5507fa1

            SHA1

            c417038dece0e05f19fc0212654a24787b974cd5

            SHA256

            3df14599adc17bebf2eb984202394319dac7155b715c8d9f8dc1554c4d99d90b

            SHA512

            816854ef1982b7521122a3e25a033efbad3f0e7b1e8fc7263f7325dc3280865e38c7a1d360b95dc0cc2e1bfe6b346c22c117e23cf27e3bd91b70b137866ce30c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0d14d85be66e4ada9c300418b193e5e0

            SHA1

            52118268018f3b43a8302f1de8fecb2724256213

            SHA256

            3358c3eee97922c91e892ba3583c0f0ae81264fc21e0932e3af6f8f5ea926e40

            SHA512

            5fd91eef9bc7ffbad5f0acfa7bddd4c112d43ab2d8812c72e00530cd64b241b2ce488ff1912a1985761f1604202899418f57235ca955c4d462364f742701bc52

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0d14d85be66e4ada9c300418b193e5e0

            SHA1

            52118268018f3b43a8302f1de8fecb2724256213

            SHA256

            3358c3eee97922c91e892ba3583c0f0ae81264fc21e0932e3af6f8f5ea926e40

            SHA512

            5fd91eef9bc7ffbad5f0acfa7bddd4c112d43ab2d8812c72e00530cd64b241b2ce488ff1912a1985761f1604202899418f57235ca955c4d462364f742701bc52

          • \Users\Admin\AppData\Local\Temp\nso604C.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso604C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso604C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso604C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso604C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            665c8cff7ea1970bc39edd26aee99a87

            SHA1

            0c6c3b674d71097c4241750346d8c5930d8b87cd

            SHA256

            ff2acf9d6e9afa41a4ee0fa9b57d21bc911636364d06c61abea08f2a13d7eefc

            SHA512

            e886cdd95512f85b09ff33db4633d0865c48967b2378ffa9852e4f6d20308b27d4f376dc829124a9d4b127b58a758ae2406d3809240f0a353a2f18fe8869781b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            665c8cff7ea1970bc39edd26aee99a87

            SHA1

            0c6c3b674d71097c4241750346d8c5930d8b87cd

            SHA256

            ff2acf9d6e9afa41a4ee0fa9b57d21bc911636364d06c61abea08f2a13d7eefc

            SHA512

            e886cdd95512f85b09ff33db4633d0865c48967b2378ffa9852e4f6d20308b27d4f376dc829124a9d4b127b58a758ae2406d3809240f0a353a2f18fe8869781b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            665c8cff7ea1970bc39edd26aee99a87

            SHA1

            0c6c3b674d71097c4241750346d8c5930d8b87cd

            SHA256

            ff2acf9d6e9afa41a4ee0fa9b57d21bc911636364d06c61abea08f2a13d7eefc

            SHA512

            e886cdd95512f85b09ff33db4633d0865c48967b2378ffa9852e4f6d20308b27d4f376dc829124a9d4b127b58a758ae2406d3809240f0a353a2f18fe8869781b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            b3e7d8b865b2cf29b416a9d297bffc8d

            SHA1

            849564c628120cd8fab22503e98809c795c7d3ba

            SHA256

            6de55faaf666137238474499fa3aa9400c80e330cfba93da4f8582f8e6425c2a

            SHA512

            f2971204ef8469d73109bfa5b46286a5fb496925b4bcae06e8fecd05dea5e4d934f0a3e4e0b68f0fabe29eb1642937662d46e7c1d7fea273fefbbc730fb96bb1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            b3e7d8b865b2cf29b416a9d297bffc8d

            SHA1

            849564c628120cd8fab22503e98809c795c7d3ba

            SHA256

            6de55faaf666137238474499fa3aa9400c80e330cfba93da4f8582f8e6425c2a

            SHA512

            f2971204ef8469d73109bfa5b46286a5fb496925b4bcae06e8fecd05dea5e4d934f0a3e4e0b68f0fabe29eb1642937662d46e7c1d7fea273fefbbc730fb96bb1

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b429cc3ec1510e5e787be865e3a9329c

            SHA1

            387b67446269ab54d32a8bcf04990f4e6347f106

            SHA256

            5644e5b273f4cb7551b532e6eedfcd167417146d3dcd63d92d25b3482c54c5d0

            SHA512

            99d894d091b1e3cfe0557105cf3dcfc3bc5b2e221d43aa62c3bd20b6a72bea0432befbab1f74c69c9a60204d10125f3745c4fdf29f8a54ff674362a67411ce10

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aa339a356a8e0c80bb148972f5507fa1

            SHA1

            c417038dece0e05f19fc0212654a24787b974cd5

            SHA256

            3df14599adc17bebf2eb984202394319dac7155b715c8d9f8dc1554c4d99d90b

            SHA512

            816854ef1982b7521122a3e25a033efbad3f0e7b1e8fc7263f7325dc3280865e38c7a1d360b95dc0cc2e1bfe6b346c22c117e23cf27e3bd91b70b137866ce30c

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0d14d85be66e4ada9c300418b193e5e0

            SHA1

            52118268018f3b43a8302f1de8fecb2724256213

            SHA256

            3358c3eee97922c91e892ba3583c0f0ae81264fc21e0932e3af6f8f5ea926e40

            SHA512

            5fd91eef9bc7ffbad5f0acfa7bddd4c112d43ab2d8812c72e00530cd64b241b2ce488ff1912a1985761f1604202899418f57235ca955c4d462364f742701bc52

          • memory/520-62-0x0000000000000000-mapping.dmp

          • memory/568-58-0x0000000000000000-mapping.dmp

          • memory/1040-71-0x0000000000000000-mapping.dmp

          • memory/1088-64-0x0000000000000000-mapping.dmp

          • memory/1160-61-0x0000000000000000-mapping.dmp

          • memory/1376-88-0x0000000000000000-mapping.dmp

          • memory/1432-87-0x0000000000000000-mapping.dmp

          • memory/1676-82-0x0000000000000000-mapping.dmp

          • memory/1748-77-0x0000000000000000-mapping.dmp

          • memory/1764-81-0x0000000000000000-mapping.dmp

          • memory/1972-57-0x0000000000000000-mapping.dmp

          • memory/2040-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2040-54-0x0000000075591000-0x0000000075593000-memory.dmp

            Filesize

            8KB

          • memory/2040-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2040-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB