Analysis

  • max time kernel
    40s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:49

General

  • Target

    f5fc6865bd116d57f0b1ad730c2fb96c426a3fd3514848cf9310aa9f8caa1e07.exe

  • Size

    445KB

  • MD5

    2857c606d5e0e12a65a210c8063e0233

  • SHA1

    6cd615d5ffab0dc28b6d0345e31809958f146248

  • SHA256

    f5fc6865bd116d57f0b1ad730c2fb96c426a3fd3514848cf9310aa9f8caa1e07

  • SHA512

    7fe233b4be1417c108de100262e6109b787b897708ed5ae9fde21be84771a9dd52d9e0906c3ab21dfb050d97a90330ea20eaeee2fd886b9f06dd93cd3d2256d1

  • SSDEEP

    12288:qs+lm/z3V3iGKrSPxP7+8CYFPYiR/ln8NAc5vope:qILVcrio8vFlRN82c5gE

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\f5fc6865bd116d57f0b1ad730c2fb96c426a3fd3514848cf9310aa9f8caa1e07.exe
    "C:\Users\Admin\AppData\Local\Temp\f5fc6865bd116d57f0b1ad730c2fb96c426a3fd3514848cf9310aa9f8caa1e07.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:1908
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1940
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1756
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1740
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2028
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2004
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1144
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:288
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1496
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1828
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1720
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1728
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1060
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:840

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            364127f3a3fb9d51be795eb10750b0c8

            SHA1

            7b55b5be006be386cff21d18786e0c74a2a7ce62

            SHA256

            eb61507b0c134f546543a8a31956bb2f86f9aeedef5a516a5610e339dbab353b

            SHA512

            6c52e75a26817b7096cf60c53bd5f10e58325006219832a913e663bc2c2a7838c57902fa274899b4e2d644829525c5ed9018b81cf7197dd522db227d28e7ba3a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            534dff3b29e3cef9a12b1445c8d9dc7a

            SHA1

            743d1403c2f5a327652fe84d90b5c2826914323b

            SHA256

            9d5636b1186d333a394af2f650d57db428693f07a0e423517e896c177df33ff4

            SHA512

            0eb6e67723666c97a3b1f9d1a4589ade7d9a61cb4fe1e664d0177085fd73d8a6b62aff81a2c52730e1a629c0aa136ff4bcdd18f2d8081932183b6b21bb25518b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            97525ee8cc6e4d801fa62663112d7e3b

            SHA1

            22da46be8f30897b470dc5f80b2f0ac178fd5ce0

            SHA256

            0b705b7d90f0c8e78ed00b0ac09b7e08125dbc3f6e9d082155ddadb6f4dd44d9

            SHA512

            8b9ff472bc64f9dcb6ad1123aa65117749631adb0707f70ec9e788c12f21eeedcdb14de41a4e17ccfbcaf451ce7173eaacb1c70f9c7f3b545333c4ca37a1a4fb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ace90522f14219721874514a6d3cded

            SHA1

            374fb0fc370b83d15a6f86fe54f1482c9f26641f

            SHA256

            9c6e76a0ebfd208c2010f016815a628f0b58d4091055d2dc795727e7c134a267

            SHA512

            d87625a2d24774e1c72b8822adedca7b945597532cc786bee04c92bb640ffe7f321d66ad4d7fe9c5cff1ee9c5c48bc49c5db4d8507c952c70f13f25a7f6e76f8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ace90522f14219721874514a6d3cded

            SHA1

            374fb0fc370b83d15a6f86fe54f1482c9f26641f

            SHA256

            9c6e76a0ebfd208c2010f016815a628f0b58d4091055d2dc795727e7c134a267

            SHA512

            d87625a2d24774e1c72b8822adedca7b945597532cc786bee04c92bb640ffe7f321d66ad4d7fe9c5cff1ee9c5c48bc49c5db4d8507c952c70f13f25a7f6e76f8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d08dc981860365c3179e96d897331cb

            SHA1

            28ac282813b675c988ead5adba0fb52eab5ba845

            SHA256

            63611002e7e9ebdd030ad3b5740250d0a1f0e22807c006ce5599ddb127de972f

            SHA512

            f610e5d42040743af0fdfddf9da04ee880867702c383b364f2d6f201e6edad83d088465bc40349210f5def10b18fa6974e0ba8f4ff0d26c983144f4a329efc56

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d08dc981860365c3179e96d897331cb

            SHA1

            28ac282813b675c988ead5adba0fb52eab5ba845

            SHA256

            63611002e7e9ebdd030ad3b5740250d0a1f0e22807c006ce5599ddb127de972f

            SHA512

            f610e5d42040743af0fdfddf9da04ee880867702c383b364f2d6f201e6edad83d088465bc40349210f5def10b18fa6974e0ba8f4ff0d26c983144f4a329efc56

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            364127f3a3fb9d51be795eb10750b0c8

            SHA1

            7b55b5be006be386cff21d18786e0c74a2a7ce62

            SHA256

            eb61507b0c134f546543a8a31956bb2f86f9aeedef5a516a5610e339dbab353b

            SHA512

            6c52e75a26817b7096cf60c53bd5f10e58325006219832a913e663bc2c2a7838c57902fa274899b4e2d644829525c5ed9018b81cf7197dd522db227d28e7ba3a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            364127f3a3fb9d51be795eb10750b0c8

            SHA1

            7b55b5be006be386cff21d18786e0c74a2a7ce62

            SHA256

            eb61507b0c134f546543a8a31956bb2f86f9aeedef5a516a5610e339dbab353b

            SHA512

            6c52e75a26817b7096cf60c53bd5f10e58325006219832a913e663bc2c2a7838c57902fa274899b4e2d644829525c5ed9018b81cf7197dd522db227d28e7ba3a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            364127f3a3fb9d51be795eb10750b0c8

            SHA1

            7b55b5be006be386cff21d18786e0c74a2a7ce62

            SHA256

            eb61507b0c134f546543a8a31956bb2f86f9aeedef5a516a5610e339dbab353b

            SHA512

            6c52e75a26817b7096cf60c53bd5f10e58325006219832a913e663bc2c2a7838c57902fa274899b4e2d644829525c5ed9018b81cf7197dd522db227d28e7ba3a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            534dff3b29e3cef9a12b1445c8d9dc7a

            SHA1

            743d1403c2f5a327652fe84d90b5c2826914323b

            SHA256

            9d5636b1186d333a394af2f650d57db428693f07a0e423517e896c177df33ff4

            SHA512

            0eb6e67723666c97a3b1f9d1a4589ade7d9a61cb4fe1e664d0177085fd73d8a6b62aff81a2c52730e1a629c0aa136ff4bcdd18f2d8081932183b6b21bb25518b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            534dff3b29e3cef9a12b1445c8d9dc7a

            SHA1

            743d1403c2f5a327652fe84d90b5c2826914323b

            SHA256

            9d5636b1186d333a394af2f650d57db428693f07a0e423517e896c177df33ff4

            SHA512

            0eb6e67723666c97a3b1f9d1a4589ade7d9a61cb4fe1e664d0177085fd73d8a6b62aff81a2c52730e1a629c0aa136ff4bcdd18f2d8081932183b6b21bb25518b

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            97525ee8cc6e4d801fa62663112d7e3b

            SHA1

            22da46be8f30897b470dc5f80b2f0ac178fd5ce0

            SHA256

            0b705b7d90f0c8e78ed00b0ac09b7e08125dbc3f6e9d082155ddadb6f4dd44d9

            SHA512

            8b9ff472bc64f9dcb6ad1123aa65117749631adb0707f70ec9e788c12f21eeedcdb14de41a4e17ccfbcaf451ce7173eaacb1c70f9c7f3b545333c4ca37a1a4fb

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ace90522f14219721874514a6d3cded

            SHA1

            374fb0fc370b83d15a6f86fe54f1482c9f26641f

            SHA256

            9c6e76a0ebfd208c2010f016815a628f0b58d4091055d2dc795727e7c134a267

            SHA512

            d87625a2d24774e1c72b8822adedca7b945597532cc786bee04c92bb640ffe7f321d66ad4d7fe9c5cff1ee9c5c48bc49c5db4d8507c952c70f13f25a7f6e76f8

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d08dc981860365c3179e96d897331cb

            SHA1

            28ac282813b675c988ead5adba0fb52eab5ba845

            SHA256

            63611002e7e9ebdd030ad3b5740250d0a1f0e22807c006ce5599ddb127de972f

            SHA512

            f610e5d42040743af0fdfddf9da04ee880867702c383b364f2d6f201e6edad83d088465bc40349210f5def10b18fa6974e0ba8f4ff0d26c983144f4a329efc56

          • memory/288-75-0x0000000000000000-mapping.dmp

          • memory/1144-69-0x0000000000000000-mapping.dmp

          • memory/1496-79-0x0000000000000000-mapping.dmp

          • memory/1720-85-0x0000000000000000-mapping.dmp

          • memory/1728-86-0x0000000000000000-mapping.dmp

          • memory/1740-60-0x0000000000000000-mapping.dmp

          • memory/1756-58-0x0000000000000000-mapping.dmp

          • memory/1828-80-0x0000000000000000-mapping.dmp

          • memory/1908-54-0x00000000753C1000-0x00000000753C3000-memory.dmp

            Filesize

            8KB

          • memory/1940-57-0x0000000000000000-mapping.dmp

          • memory/2004-63-0x0000000000000000-mapping.dmp

          • memory/2028-61-0x0000000000000000-mapping.dmp