Analysis

  • max time kernel
    40s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:31

General

  • Target

    26bdd9f7de671ed157eb020d9359b1be741503322f442dae3868946a0f368306.exe

  • Size

    602KB

  • MD5

    762816f13bf33e8b4a36ab8b650c8a6a

  • SHA1

    e1c58d6c922add149ee0525fd066074a6a77209f

  • SHA256

    26bdd9f7de671ed157eb020d9359b1be741503322f442dae3868946a0f368306

  • SHA512

    0d1b60b0a33fbb469c156e8592f4e8a3bc41a8738540a643c4fa7ad2befc3015bd0636ad55740ccaae72f17827a01216e434cb01ac673ea1abb29dc7d55b38eb

  • SSDEEP

    12288:cIny5DYTgrFdN0GwvRfxgm83sYgNyWqiJvwH5U:6UTghXgRfh8jiRwZ

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\26bdd9f7de671ed157eb020d9359b1be741503322f442dae3868946a0f368306.exe
    "C:\Users\Admin\AppData\Local\Temp\26bdd9f7de671ed157eb020d9359b1be741503322f442dae3868946a0f368306.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:1148
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1792
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:844
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1108
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1516
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2036
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1068
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1660
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1200
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1336
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1884
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1176
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1948
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:732

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            32bcbb88206de605bf22ea460ded225a

            SHA1

            c46630e5bc1b46b19d4431e294e3e19988328a63

            SHA256

            cdb081bba5358a79e960ea56799a8797b7c9991f39f271367751c45e6344313c

            SHA512

            4754c09233f7b2d6087fb6322dde72fc2f6ef71756521ff0c34098d2e95848cdda804a0632d9a750930ff94866e2672a2e470efd12ec314b2bdd538bd5687070

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            73fd2d9cc685a4d20d4aa37f1d68c3d3

            SHA1

            31256cc6141d33fb2ccaf7733462330d1d6f13a7

            SHA256

            2f2f09e8425b1ecf120f5142dfbea7284de1cd37cebe2e383181d7c742c8d64e

            SHA512

            4a2899c079bb76683498fe27b93dbb28ea96069e2e110bdb14be408942831fb83448ef8c10b856da87650a43081208ca9868951e428caf2cfc9a7096cff84ca2

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6eb73d001db44f83fa6c127c1509485c

            SHA1

            d9944475620845b071cedc545b17211b5352b9f1

            SHA256

            f2a07addf0b168698069ec90f07e604d4282b9e668dfa048bf08c5d594387af1

            SHA512

            d7421eb2947d103148117c6675424df91b57fa22289f95388fbb59ff443ff3c615a045fa4c7f48c21ad2e4192746549cc9cbd8e333cf9fa465905e45f1c99a76

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            65729d9e79e53140eec38b8c16753149

            SHA1

            d427b31a5b9d7179a9e449e041e51d0bc43ef7fc

            SHA256

            0aa2135266ba754dd0cf519a78230a7dca800916f40604bd8a40232b0fc4720b

            SHA512

            a5df083bbb0f6abe7446f39d454b4e22742eac469f31a446513a69d2806a83e797e7964a98f33c0df2f79d8b363cd718e192ad0c135b42bdec504bd442cc662d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            65729d9e79e53140eec38b8c16753149

            SHA1

            d427b31a5b9d7179a9e449e041e51d0bc43ef7fc

            SHA256

            0aa2135266ba754dd0cf519a78230a7dca800916f40604bd8a40232b0fc4720b

            SHA512

            a5df083bbb0f6abe7446f39d454b4e22742eac469f31a446513a69d2806a83e797e7964a98f33c0df2f79d8b363cd718e192ad0c135b42bdec504bd442cc662d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4a30720f2431f3956fa02760b74470a0

            SHA1

            2b92803df0f6b26aa5bb0e09b3eb749a49a2c136

            SHA256

            e17beb416487101e6d6ceed6f712f8481d415417397a91a9a25eb521ffab0c93

            SHA512

            0ad96d5f72442044cca930a79d48b627e12f5230096f2e8cac471cfbd1ab8d7f187afdfe6fe0f29c2b620e96a6efb04f26b8d68b7132b8fc45d0389677b3559a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4a30720f2431f3956fa02760b74470a0

            SHA1

            2b92803df0f6b26aa5bb0e09b3eb749a49a2c136

            SHA256

            e17beb416487101e6d6ceed6f712f8481d415417397a91a9a25eb521ffab0c93

            SHA512

            0ad96d5f72442044cca930a79d48b627e12f5230096f2e8cac471cfbd1ab8d7f187afdfe6fe0f29c2b620e96a6efb04f26b8d68b7132b8fc45d0389677b3559a

          • \Users\Admin\AppData\Local\Temp\nso283C.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso283C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso283C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso283C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso283C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            32bcbb88206de605bf22ea460ded225a

            SHA1

            c46630e5bc1b46b19d4431e294e3e19988328a63

            SHA256

            cdb081bba5358a79e960ea56799a8797b7c9991f39f271367751c45e6344313c

            SHA512

            4754c09233f7b2d6087fb6322dde72fc2f6ef71756521ff0c34098d2e95848cdda804a0632d9a750930ff94866e2672a2e470efd12ec314b2bdd538bd5687070

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            32bcbb88206de605bf22ea460ded225a

            SHA1

            c46630e5bc1b46b19d4431e294e3e19988328a63

            SHA256

            cdb081bba5358a79e960ea56799a8797b7c9991f39f271367751c45e6344313c

            SHA512

            4754c09233f7b2d6087fb6322dde72fc2f6ef71756521ff0c34098d2e95848cdda804a0632d9a750930ff94866e2672a2e470efd12ec314b2bdd538bd5687070

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            32bcbb88206de605bf22ea460ded225a

            SHA1

            c46630e5bc1b46b19d4431e294e3e19988328a63

            SHA256

            cdb081bba5358a79e960ea56799a8797b7c9991f39f271367751c45e6344313c

            SHA512

            4754c09233f7b2d6087fb6322dde72fc2f6ef71756521ff0c34098d2e95848cdda804a0632d9a750930ff94866e2672a2e470efd12ec314b2bdd538bd5687070

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            73fd2d9cc685a4d20d4aa37f1d68c3d3

            SHA1

            31256cc6141d33fb2ccaf7733462330d1d6f13a7

            SHA256

            2f2f09e8425b1ecf120f5142dfbea7284de1cd37cebe2e383181d7c742c8d64e

            SHA512

            4a2899c079bb76683498fe27b93dbb28ea96069e2e110bdb14be408942831fb83448ef8c10b856da87650a43081208ca9868951e428caf2cfc9a7096cff84ca2

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            73fd2d9cc685a4d20d4aa37f1d68c3d3

            SHA1

            31256cc6141d33fb2ccaf7733462330d1d6f13a7

            SHA256

            2f2f09e8425b1ecf120f5142dfbea7284de1cd37cebe2e383181d7c742c8d64e

            SHA512

            4a2899c079bb76683498fe27b93dbb28ea96069e2e110bdb14be408942831fb83448ef8c10b856da87650a43081208ca9868951e428caf2cfc9a7096cff84ca2

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6eb73d001db44f83fa6c127c1509485c

            SHA1

            d9944475620845b071cedc545b17211b5352b9f1

            SHA256

            f2a07addf0b168698069ec90f07e604d4282b9e668dfa048bf08c5d594387af1

            SHA512

            d7421eb2947d103148117c6675424df91b57fa22289f95388fbb59ff443ff3c615a045fa4c7f48c21ad2e4192746549cc9cbd8e333cf9fa465905e45f1c99a76

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            65729d9e79e53140eec38b8c16753149

            SHA1

            d427b31a5b9d7179a9e449e041e51d0bc43ef7fc

            SHA256

            0aa2135266ba754dd0cf519a78230a7dca800916f40604bd8a40232b0fc4720b

            SHA512

            a5df083bbb0f6abe7446f39d454b4e22742eac469f31a446513a69d2806a83e797e7964a98f33c0df2f79d8b363cd718e192ad0c135b42bdec504bd442cc662d

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4a30720f2431f3956fa02760b74470a0

            SHA1

            2b92803df0f6b26aa5bb0e09b3eb749a49a2c136

            SHA256

            e17beb416487101e6d6ceed6f712f8481d415417397a91a9a25eb521ffab0c93

            SHA512

            0ad96d5f72442044cca930a79d48b627e12f5230096f2e8cac471cfbd1ab8d7f187afdfe6fe0f29c2b620e96a6efb04f26b8d68b7132b8fc45d0389677b3559a

          • memory/844-59-0x0000000000000000-mapping.dmp

          • memory/1068-70-0x0000000000000000-mapping.dmp

          • memory/1108-61-0x0000000000000000-mapping.dmp

          • memory/1148-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1148-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1148-54-0x0000000074C11000-0x0000000074C13000-memory.dmp

            Filesize

            8KB

          • memory/1176-87-0x0000000000000000-mapping.dmp

          • memory/1200-80-0x0000000000000000-mapping.dmp

          • memory/1336-81-0x0000000000000000-mapping.dmp

          • memory/1516-62-0x0000000000000000-mapping.dmp

          • memory/1660-76-0x0000000000000000-mapping.dmp

          • memory/1792-58-0x0000000000000000-mapping.dmp

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

          • memory/2036-64-0x0000000000000000-mapping.dmp