Analysis

  • max time kernel
    38s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:15

General

  • Target

    ac6af3219a427217d464e94cb52059408f6cb9d628b84c37f30fd52201a43151.exe

  • Size

    602KB

  • MD5

    ba676dd12b7b949b242833e14853fbdd

  • SHA1

    f67dd05de2718a65d2cc63ed3321b9d1c107f492

  • SHA256

    ac6af3219a427217d464e94cb52059408f6cb9d628b84c37f30fd52201a43151

  • SHA512

    1682425bb30b4cc9c7b7b27e54aae9d457deb4312ebaaed759e96545e18d54b9cffe58e807f8d089171fc1d89000e8fd14ba30cf9208338503395750bebb325e

  • SSDEEP

    12288:CIny5DYT0Mqgy5tFebthUodX2Nm5ESQacBazMn8/ZNzrin3AvN+g:kUT0Lgy5t2UymNmoacAMn8BNXi8U

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\ac6af3219a427217d464e94cb52059408f6cb9d628b84c37f30fd52201a43151.exe
    "C:\Users\Admin\AppData\Local\Temp\ac6af3219a427217d464e94cb52059408f6cb9d628b84c37f30fd52201a43151.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:1944
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1996
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2036
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1904
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:996
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:456
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1232
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1764
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:584
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1144
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:588
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1972
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1864
          • 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

            76e5b5d0c345f47d6948639b5e6f9304

            SHA1

            20545d9050edaf0ebd9b9bcd9a127604d7f272a6

            SHA256

            203916bf4e1051a5526db22ba2d1a5386471dac357cb32f118fb8e62f3b3f51d

            SHA512

            0dad8edf814d04d561c24169772b5ec6df4f5a6ce17e90b5baa911034c834e5084d82605a284f652be295b4488bd3f5949ba5afd78e88e6a347b742f06a68e5f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            62ea220d7bdd940457cb94a12b6f72f0

            SHA1

            ee5a03c527c261fdfc6aea262ff8019ae69c0169

            SHA256

            fadbafe434ed378db980956e78a6025226e2fe03a811e9b0166eb0b9188dc842

            SHA512

            b5a5bcbb33649e92d547704f3ab2f1625942dcd6fe66d5081353c51bf65b9fd0d7dd6ab3d10c7cc085365d42a52d69a4e7ac7a4d25a104d4d09350dfe06b3044

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            9b49a529148622a12eeb88e9005ec95e

            SHA1

            ae9e7cbccc206da10cbff40c08378e056ab4c60d

            SHA256

            36e498fcf7288ae5fa0a22771054145cab5ccf86d1d798031cb4f00bef825fd3

            SHA512

            1404288476dfd5fb8e953f94cf52756ed2565df8b0cf0dbba05374c63ea36ee55175087f9f2a2b0bc466c82424799acace80ac590945f744fdd82d7943a3638c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7d0d8bf132b18331d2a1be14462ade55

            SHA1

            cf3445b1b5de352b0e4723ab97bf7c0596282dad

            SHA256

            d7c48077536fee030f0d7a3458b8d85843cdd96b61babfcc5eb730199c77bc93

            SHA512

            87139348e5d70d31bae080e2cb7c5953bd8f186000b2a17344fa4258c163b96849d3203083ee362fa57ba57a140b6b6c65cb9858de802aed5b19d0862e25d4d4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7d0d8bf132b18331d2a1be14462ade55

            SHA1

            cf3445b1b5de352b0e4723ab97bf7c0596282dad

            SHA256

            d7c48077536fee030f0d7a3458b8d85843cdd96b61babfcc5eb730199c77bc93

            SHA512

            87139348e5d70d31bae080e2cb7c5953bd8f186000b2a17344fa4258c163b96849d3203083ee362fa57ba57a140b6b6c65cb9858de802aed5b19d0862e25d4d4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            2e219b73c064e108b162f1bd6c58ed59

            SHA1

            622f4ff043b0facf6cc4611a1b571dc667ac695f

            SHA256

            a73caa04fb55d13e1b8d0f8688aba6ba44add84e479140be82ea14606a2d65ec

            SHA512

            62a42cf045c83c38486e35558397efae935de47baced4acfc976a8a6e2aa14886f0473bcc1e4d6d52406d980759efa9fe76956b554af7d4c5f8859783fae842d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            2e219b73c064e108b162f1bd6c58ed59

            SHA1

            622f4ff043b0facf6cc4611a1b571dc667ac695f

            SHA256

            a73caa04fb55d13e1b8d0f8688aba6ba44add84e479140be82ea14606a2d65ec

            SHA512

            62a42cf045c83c38486e35558397efae935de47baced4acfc976a8a6e2aa14886f0473bcc1e4d6d52406d980759efa9fe76956b554af7d4c5f8859783fae842d

          • \Users\Admin\AppData\Local\Temp\nsd5BC9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd5BC9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd5BC9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd5BC9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd5BC9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            76e5b5d0c345f47d6948639b5e6f9304

            SHA1

            20545d9050edaf0ebd9b9bcd9a127604d7f272a6

            SHA256

            203916bf4e1051a5526db22ba2d1a5386471dac357cb32f118fb8e62f3b3f51d

            SHA512

            0dad8edf814d04d561c24169772b5ec6df4f5a6ce17e90b5baa911034c834e5084d82605a284f652be295b4488bd3f5949ba5afd78e88e6a347b742f06a68e5f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            76e5b5d0c345f47d6948639b5e6f9304

            SHA1

            20545d9050edaf0ebd9b9bcd9a127604d7f272a6

            SHA256

            203916bf4e1051a5526db22ba2d1a5386471dac357cb32f118fb8e62f3b3f51d

            SHA512

            0dad8edf814d04d561c24169772b5ec6df4f5a6ce17e90b5baa911034c834e5084d82605a284f652be295b4488bd3f5949ba5afd78e88e6a347b742f06a68e5f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            76e5b5d0c345f47d6948639b5e6f9304

            SHA1

            20545d9050edaf0ebd9b9bcd9a127604d7f272a6

            SHA256

            203916bf4e1051a5526db22ba2d1a5386471dac357cb32f118fb8e62f3b3f51d

            SHA512

            0dad8edf814d04d561c24169772b5ec6df4f5a6ce17e90b5baa911034c834e5084d82605a284f652be295b4488bd3f5949ba5afd78e88e6a347b742f06a68e5f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            62ea220d7bdd940457cb94a12b6f72f0

            SHA1

            ee5a03c527c261fdfc6aea262ff8019ae69c0169

            SHA256

            fadbafe434ed378db980956e78a6025226e2fe03a811e9b0166eb0b9188dc842

            SHA512

            b5a5bcbb33649e92d547704f3ab2f1625942dcd6fe66d5081353c51bf65b9fd0d7dd6ab3d10c7cc085365d42a52d69a4e7ac7a4d25a104d4d09350dfe06b3044

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            62ea220d7bdd940457cb94a12b6f72f0

            SHA1

            ee5a03c527c261fdfc6aea262ff8019ae69c0169

            SHA256

            fadbafe434ed378db980956e78a6025226e2fe03a811e9b0166eb0b9188dc842

            SHA512

            b5a5bcbb33649e92d547704f3ab2f1625942dcd6fe66d5081353c51bf65b9fd0d7dd6ab3d10c7cc085365d42a52d69a4e7ac7a4d25a104d4d09350dfe06b3044

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            9b49a529148622a12eeb88e9005ec95e

            SHA1

            ae9e7cbccc206da10cbff40c08378e056ab4c60d

            SHA256

            36e498fcf7288ae5fa0a22771054145cab5ccf86d1d798031cb4f00bef825fd3

            SHA512

            1404288476dfd5fb8e953f94cf52756ed2565df8b0cf0dbba05374c63ea36ee55175087f9f2a2b0bc466c82424799acace80ac590945f744fdd82d7943a3638c

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7d0d8bf132b18331d2a1be14462ade55

            SHA1

            cf3445b1b5de352b0e4723ab97bf7c0596282dad

            SHA256

            d7c48077536fee030f0d7a3458b8d85843cdd96b61babfcc5eb730199c77bc93

            SHA512

            87139348e5d70d31bae080e2cb7c5953bd8f186000b2a17344fa4258c163b96849d3203083ee362fa57ba57a140b6b6c65cb9858de802aed5b19d0862e25d4d4

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            2e219b73c064e108b162f1bd6c58ed59

            SHA1

            622f4ff043b0facf6cc4611a1b571dc667ac695f

            SHA256

            a73caa04fb55d13e1b8d0f8688aba6ba44add84e479140be82ea14606a2d65ec

            SHA512

            62a42cf045c83c38486e35558397efae935de47baced4acfc976a8a6e2aa14886f0473bcc1e4d6d52406d980759efa9fe76956b554af7d4c5f8859783fae842d

          • memory/456-64-0x0000000000000000-mapping.dmp

          • memory/584-80-0x0000000000000000-mapping.dmp

          • memory/588-86-0x0000000000000000-mapping.dmp

          • memory/996-61-0x0000000000000000-mapping.dmp

          • memory/1144-81-0x0000000000000000-mapping.dmp

          • memory/1232-70-0x0000000000000000-mapping.dmp

          • memory/1764-76-0x0000000000000000-mapping.dmp

          • memory/1904-60-0x0000000000000000-mapping.dmp

          • memory/1944-54-0x0000000076831000-0x0000000076833000-memory.dmp

            Filesize

            8KB

          • memory/1944-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1944-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1972-87-0x0000000000000000-mapping.dmp

          • memory/1996-57-0x0000000000000000-mapping.dmp

          • memory/2036-58-0x0000000000000000-mapping.dmp