Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:07

General

  • Target

    f32265033ca4c0c6233f789291bdd6b925acac2ed88910e50d5686890fab9791.exe

  • Size

    603KB

  • MD5

    0d9ad51ec1c739f2b25a7653402e871e

  • SHA1

    ea9891f06558d44cd91571211cddfde1222eece2

  • SHA256

    f32265033ca4c0c6233f789291bdd6b925acac2ed88910e50d5686890fab9791

  • SHA512

    afcd7826d314e0861362bca55e48492ad3477748db48c06949b59f186e627c38ef7dc20f1bd7cb1ee5d6103db0752b79f793ed3190da46779bec76c56563e4d3

  • SSDEEP

    12288:oIny5DYTByVvHPyWS5o24KzwpvbgmwnNqT9gXcqWbghS2q4EcMmiL5QZgF6:mUTgUQtbgmwnMmWbVA8mK5QZg

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\f32265033ca4c0c6233f789291bdd6b925acac2ed88910e50d5686890fab9791.exe
    "C:\Users\Admin\AppData\Local\Temp\f32265033ca4c0c6233f789291bdd6b925acac2ed88910e50d5686890fab9791.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:1900
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:992
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:900
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1372
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1688
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1684
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1256
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:764
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1176
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1964
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:976
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1664
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1324
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1920

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            063b3d131b85182a306ad9c76b3ed45b

            SHA1

            bafdc862ed50b7001b362c34a8c10c46e3fe1f28

            SHA256

            6f2fdc7a7e42c3e6678bf0c8b628eedab61d5ae2b7dc38b1f4855ef2eea4de18

            SHA512

            47e4330650e12a5fe20d5da9a20bbfb82703cf2744a3599d66fad3b7f23e479ea42471586f352bf81e4474e0568b4ba0059b2cb160fc2d51b26344ac64fe0990

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f62f2c2319d5f6e56682504d54819e96

            SHA1

            04e2b4a4d30c0ed605cc0192d131b54af21a5a92

            SHA256

            3fe1a453d0fecebd11558c29bdebba13edde707731146280a850e2b241ae8b7f

            SHA512

            7efbf5f424cc6d7da1e9ee7b509a057374b6c3ee504bf77cd9d504f06bc5e8448b5b6b4e4f750f0bab3114f561f94c5210af4667086af15ddb85f36c25743bbd

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4f9bd367bc8467cbb8299ce32010fc44

            SHA1

            03b8fb38716da86539f08697bd206a5bac861b59

            SHA256

            ee6aa69cb77fa7687381de45dc83a91b098c8ae61ae45986d538fe9e0903161e

            SHA512

            050dd6b0d5313b122d1a6ad3183552b3d7232ad7f6f751cdbca8be9a6efc67e350a12f08abf7d2f54b864e4ff5616cc947023c63de2c7b8dca40c4ca49d30cea

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e72f6fe19802533690038fce1f3b1132

            SHA1

            92d7b365d9e95852c0337f7466d5becafb8cb1ac

            SHA256

            cc3f6d7af4a9abf3736613a37a2b3c6b422c263e5463db526c10fc7a6e8908f9

            SHA512

            41f5f99ee27fa6d84026dcde238682781f5a0fce22d25b4c03af2324d46b17094168d752eceb28f03244dd5973196130cdec3d4fa20eb1ad9c6aa97d22f4552c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e72f6fe19802533690038fce1f3b1132

            SHA1

            92d7b365d9e95852c0337f7466d5becafb8cb1ac

            SHA256

            cc3f6d7af4a9abf3736613a37a2b3c6b422c263e5463db526c10fc7a6e8908f9

            SHA512

            41f5f99ee27fa6d84026dcde238682781f5a0fce22d25b4c03af2324d46b17094168d752eceb28f03244dd5973196130cdec3d4fa20eb1ad9c6aa97d22f4552c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            634c989639796c1b2b70055536bb80dc

            SHA1

            9c6bd2979135c89f5dbfaa4d337488a6769f9875

            SHA256

            ec318720abe0ba5b6d0c52841560cf0f60d341c56488f6b59cf2dad11c5580d0

            SHA512

            6f503d13e3549825dfcb4df1792d583a592058bb4783f222fe0cc1047988d6e0df198470e15779510b96428f31ba735456a72eb1605bbc7d83b2ca8f1eb28317

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            634c989639796c1b2b70055536bb80dc

            SHA1

            9c6bd2979135c89f5dbfaa4d337488a6769f9875

            SHA256

            ec318720abe0ba5b6d0c52841560cf0f60d341c56488f6b59cf2dad11c5580d0

            SHA512

            6f503d13e3549825dfcb4df1792d583a592058bb4783f222fe0cc1047988d6e0df198470e15779510b96428f31ba735456a72eb1605bbc7d83b2ca8f1eb28317

          • \Users\Admin\AppData\Local\Temp\nsdC43.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsdC43.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdC43.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdC43.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdC43.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            063b3d131b85182a306ad9c76b3ed45b

            SHA1

            bafdc862ed50b7001b362c34a8c10c46e3fe1f28

            SHA256

            6f2fdc7a7e42c3e6678bf0c8b628eedab61d5ae2b7dc38b1f4855ef2eea4de18

            SHA512

            47e4330650e12a5fe20d5da9a20bbfb82703cf2744a3599d66fad3b7f23e479ea42471586f352bf81e4474e0568b4ba0059b2cb160fc2d51b26344ac64fe0990

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            063b3d131b85182a306ad9c76b3ed45b

            SHA1

            bafdc862ed50b7001b362c34a8c10c46e3fe1f28

            SHA256

            6f2fdc7a7e42c3e6678bf0c8b628eedab61d5ae2b7dc38b1f4855ef2eea4de18

            SHA512

            47e4330650e12a5fe20d5da9a20bbfb82703cf2744a3599d66fad3b7f23e479ea42471586f352bf81e4474e0568b4ba0059b2cb160fc2d51b26344ac64fe0990

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            063b3d131b85182a306ad9c76b3ed45b

            SHA1

            bafdc862ed50b7001b362c34a8c10c46e3fe1f28

            SHA256

            6f2fdc7a7e42c3e6678bf0c8b628eedab61d5ae2b7dc38b1f4855ef2eea4de18

            SHA512

            47e4330650e12a5fe20d5da9a20bbfb82703cf2744a3599d66fad3b7f23e479ea42471586f352bf81e4474e0568b4ba0059b2cb160fc2d51b26344ac64fe0990

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f62f2c2319d5f6e56682504d54819e96

            SHA1

            04e2b4a4d30c0ed605cc0192d131b54af21a5a92

            SHA256

            3fe1a453d0fecebd11558c29bdebba13edde707731146280a850e2b241ae8b7f

            SHA512

            7efbf5f424cc6d7da1e9ee7b509a057374b6c3ee504bf77cd9d504f06bc5e8448b5b6b4e4f750f0bab3114f561f94c5210af4667086af15ddb85f36c25743bbd

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f62f2c2319d5f6e56682504d54819e96

            SHA1

            04e2b4a4d30c0ed605cc0192d131b54af21a5a92

            SHA256

            3fe1a453d0fecebd11558c29bdebba13edde707731146280a850e2b241ae8b7f

            SHA512

            7efbf5f424cc6d7da1e9ee7b509a057374b6c3ee504bf77cd9d504f06bc5e8448b5b6b4e4f750f0bab3114f561f94c5210af4667086af15ddb85f36c25743bbd

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4f9bd367bc8467cbb8299ce32010fc44

            SHA1

            03b8fb38716da86539f08697bd206a5bac861b59

            SHA256

            ee6aa69cb77fa7687381de45dc83a91b098c8ae61ae45986d538fe9e0903161e

            SHA512

            050dd6b0d5313b122d1a6ad3183552b3d7232ad7f6f751cdbca8be9a6efc67e350a12f08abf7d2f54b864e4ff5616cc947023c63de2c7b8dca40c4ca49d30cea

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e72f6fe19802533690038fce1f3b1132

            SHA1

            92d7b365d9e95852c0337f7466d5becafb8cb1ac

            SHA256

            cc3f6d7af4a9abf3736613a37a2b3c6b422c263e5463db526c10fc7a6e8908f9

            SHA512

            41f5f99ee27fa6d84026dcde238682781f5a0fce22d25b4c03af2324d46b17094168d752eceb28f03244dd5973196130cdec3d4fa20eb1ad9c6aa97d22f4552c

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            634c989639796c1b2b70055536bb80dc

            SHA1

            9c6bd2979135c89f5dbfaa4d337488a6769f9875

            SHA256

            ec318720abe0ba5b6d0c52841560cf0f60d341c56488f6b59cf2dad11c5580d0

            SHA512

            6f503d13e3549825dfcb4df1792d583a592058bb4783f222fe0cc1047988d6e0df198470e15779510b96428f31ba735456a72eb1605bbc7d83b2ca8f1eb28317

          • memory/764-76-0x0000000000000000-mapping.dmp

          • memory/900-59-0x0000000000000000-mapping.dmp

          • memory/976-86-0x0000000000000000-mapping.dmp

          • memory/992-58-0x0000000000000000-mapping.dmp

          • memory/1176-80-0x0000000000000000-mapping.dmp

          • memory/1256-70-0x0000000000000000-mapping.dmp

          • memory/1372-61-0x0000000000000000-mapping.dmp

          • memory/1664-87-0x0000000000000000-mapping.dmp

          • memory/1684-64-0x0000000000000000-mapping.dmp

          • memory/1688-62-0x0000000000000000-mapping.dmp

          • memory/1900-54-0x00000000759F1000-0x00000000759F3000-memory.dmp

            Filesize

            8KB

          • memory/1900-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1900-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1964-81-0x0000000000000000-mapping.dmp