Analysis

  • max time kernel
    45s
  • 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 10:56

General

  • Target

    549b1e4c1b4c08f6f32b8f5bb0e19313140bdbae85a567fe9470844c64290250.exe

  • Size

    446KB

  • MD5

    77eea8ed631a1769104ad1693a7e4195

  • SHA1

    733f0f1a0a49829702c00372256ab8107195aac0

  • SHA256

    549b1e4c1b4c08f6f32b8f5bb0e19313140bdbae85a567fe9470844c64290250

  • SHA512

    91456397cec7e575606679582cb640937eb9e5c1988424356aee409248a32cbf52cdcab396fb5b20bcdc6375c6ecb9600751599bdeef375e766c671bc0489115

  • SSDEEP

    12288:uLOWGaN+0771VRw3uuKa/UKQPINIVAZwzmX2r4mD:uLfGK9V86acKQPUIKZwzm04mD

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\549b1e4c1b4c08f6f32b8f5bb0e19313140bdbae85a567fe9470844c64290250.exe
    "C:\Users\Admin\AppData\Local\Temp\549b1e4c1b4c08f6f32b8f5bb0e19313140bdbae85a567fe9470844c64290250.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:1764
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:972
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1268
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1472
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:848
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:768
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1892
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1824
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1656
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1836
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:536
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1884
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:360
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1408

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            79d1e21073c2b181115fd1ddad53dbc6

            SHA1

            3c60f84822b1bc71a0df3f7d157c266505e3df8e

            SHA256

            0c5f77642aa71a8b6c34db4fa385216927ee4e998052b04fa8ea8b9ec2eccabd

            SHA512

            c1f75407b4ddb5418a430435cff7d6ff68ba39fb18ac7cee1be25aa165dd9db81ca261f37edb0d0824b9743c18ea210a885b1d35a74dea0442207ea1ebf96ba1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6e99e6bda6246e283b958b8c9741023f

            SHA1

            cbb83eda4d3d049792d658e64f3e0bb56558a407

            SHA256

            ee2997e682fc8a7bfcc5427d1a1e909d639418effe13185011a2011f40198b89

            SHA512

            171632867870c8e76912577974c2157557becb7adf29fb9be154e0ae740684053a201e16bfa4c4feb7f6ef2064f186bc6288effc971baaf72d6ca792315ee916

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            5a938c2b6cd7c50ed2c3725db3e01eb5

            SHA1

            c577e6a3e072bcf1f995e5a3cb2b6a71146786b5

            SHA256

            cda1b00ca9bb326da103e3132860a342467d6d03006cb79e44dbc8267cb9429d

            SHA512

            830e65369c82354ab4314dbe95c199bc53606d854d6a6991b390d1eafca03e6b784a57be9193c8dd808ad9ce28bd9b8f9bd742e313650a52a53fb6a13b7710f3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3350e85584933d098ae887109b049d04

            SHA1

            d44907b148c747c975367f2aa0a01580e45d9575

            SHA256

            599761a64ba1c1021a41b1e9b833f5a516e168ebb3e149336492e1fc6cadacb7

            SHA512

            1deafdfdd9e3b5ec48a37e505c14bd718cf60323edcf0194c3ae679e9a20a36ffac2d0eb08a4ef8d524b41ed4243d4d423ea2d66d243c4db3ea821c90c8fcda7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3350e85584933d098ae887109b049d04

            SHA1

            d44907b148c747c975367f2aa0a01580e45d9575

            SHA256

            599761a64ba1c1021a41b1e9b833f5a516e168ebb3e149336492e1fc6cadacb7

            SHA512

            1deafdfdd9e3b5ec48a37e505c14bd718cf60323edcf0194c3ae679e9a20a36ffac2d0eb08a4ef8d524b41ed4243d4d423ea2d66d243c4db3ea821c90c8fcda7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            34307affc3d8db18953ee5eb854db5c6

            SHA1

            540312557f5543e7d42e7562558ca936a42ba55e

            SHA256

            2af97ea4f51bce68b9804c2123f023d739111e914d33062f5dfb5a9291d6ed5f

            SHA512

            33160229d5451438217b359092f49302edcfae18fcb90f39cd433f008f4336961ba2edda314a2b5d2980e452ce54ab2aec9d83496c6ee49b49f06df709b9127b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            34307affc3d8db18953ee5eb854db5c6

            SHA1

            540312557f5543e7d42e7562558ca936a42ba55e

            SHA256

            2af97ea4f51bce68b9804c2123f023d739111e914d33062f5dfb5a9291d6ed5f

            SHA512

            33160229d5451438217b359092f49302edcfae18fcb90f39cd433f008f4336961ba2edda314a2b5d2980e452ce54ab2aec9d83496c6ee49b49f06df709b9127b

          • \Users\Admin\AppData\Local\Temp\nsdBA7.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsdBA7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdBA7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdBA7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdBA7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            79d1e21073c2b181115fd1ddad53dbc6

            SHA1

            3c60f84822b1bc71a0df3f7d157c266505e3df8e

            SHA256

            0c5f77642aa71a8b6c34db4fa385216927ee4e998052b04fa8ea8b9ec2eccabd

            SHA512

            c1f75407b4ddb5418a430435cff7d6ff68ba39fb18ac7cee1be25aa165dd9db81ca261f37edb0d0824b9743c18ea210a885b1d35a74dea0442207ea1ebf96ba1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            79d1e21073c2b181115fd1ddad53dbc6

            SHA1

            3c60f84822b1bc71a0df3f7d157c266505e3df8e

            SHA256

            0c5f77642aa71a8b6c34db4fa385216927ee4e998052b04fa8ea8b9ec2eccabd

            SHA512

            c1f75407b4ddb5418a430435cff7d6ff68ba39fb18ac7cee1be25aa165dd9db81ca261f37edb0d0824b9743c18ea210a885b1d35a74dea0442207ea1ebf96ba1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            79d1e21073c2b181115fd1ddad53dbc6

            SHA1

            3c60f84822b1bc71a0df3f7d157c266505e3df8e

            SHA256

            0c5f77642aa71a8b6c34db4fa385216927ee4e998052b04fa8ea8b9ec2eccabd

            SHA512

            c1f75407b4ddb5418a430435cff7d6ff68ba39fb18ac7cee1be25aa165dd9db81ca261f37edb0d0824b9743c18ea210a885b1d35a74dea0442207ea1ebf96ba1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6e99e6bda6246e283b958b8c9741023f

            SHA1

            cbb83eda4d3d049792d658e64f3e0bb56558a407

            SHA256

            ee2997e682fc8a7bfcc5427d1a1e909d639418effe13185011a2011f40198b89

            SHA512

            171632867870c8e76912577974c2157557becb7adf29fb9be154e0ae740684053a201e16bfa4c4feb7f6ef2064f186bc6288effc971baaf72d6ca792315ee916

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6e99e6bda6246e283b958b8c9741023f

            SHA1

            cbb83eda4d3d049792d658e64f3e0bb56558a407

            SHA256

            ee2997e682fc8a7bfcc5427d1a1e909d639418effe13185011a2011f40198b89

            SHA512

            171632867870c8e76912577974c2157557becb7adf29fb9be154e0ae740684053a201e16bfa4c4feb7f6ef2064f186bc6288effc971baaf72d6ca792315ee916

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            5a938c2b6cd7c50ed2c3725db3e01eb5

            SHA1

            c577e6a3e072bcf1f995e5a3cb2b6a71146786b5

            SHA256

            cda1b00ca9bb326da103e3132860a342467d6d03006cb79e44dbc8267cb9429d

            SHA512

            830e65369c82354ab4314dbe95c199bc53606d854d6a6991b390d1eafca03e6b784a57be9193c8dd808ad9ce28bd9b8f9bd742e313650a52a53fb6a13b7710f3

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3350e85584933d098ae887109b049d04

            SHA1

            d44907b148c747c975367f2aa0a01580e45d9575

            SHA256

            599761a64ba1c1021a41b1e9b833f5a516e168ebb3e149336492e1fc6cadacb7

            SHA512

            1deafdfdd9e3b5ec48a37e505c14bd718cf60323edcf0194c3ae679e9a20a36ffac2d0eb08a4ef8d524b41ed4243d4d423ea2d66d243c4db3ea821c90c8fcda7

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            34307affc3d8db18953ee5eb854db5c6

            SHA1

            540312557f5543e7d42e7562558ca936a42ba55e

            SHA256

            2af97ea4f51bce68b9804c2123f023d739111e914d33062f5dfb5a9291d6ed5f

            SHA512

            33160229d5451438217b359092f49302edcfae18fcb90f39cd433f008f4336961ba2edda314a2b5d2980e452ce54ab2aec9d83496c6ee49b49f06df709b9127b

          • memory/536-85-0x0000000000000000-mapping.dmp

          • memory/768-63-0x0000000000000000-mapping.dmp

          • memory/848-61-0x0000000000000000-mapping.dmp

          • memory/972-57-0x0000000000000000-mapping.dmp

          • memory/1268-58-0x0000000000000000-mapping.dmp

          • memory/1472-60-0x0000000000000000-mapping.dmp

          • memory/1656-79-0x0000000000000000-mapping.dmp

          • memory/1764-54-0x0000000075001000-0x0000000075003000-memory.dmp

            Filesize

            8KB

          • memory/1824-75-0x0000000000000000-mapping.dmp

          • memory/1836-80-0x0000000000000000-mapping.dmp

          • memory/1884-86-0x0000000000000000-mapping.dmp

          • memory/1892-69-0x0000000000000000-mapping.dmp