Analysis

  • max time kernel
    42s
  • 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 10:31

General

  • Target

    237184cfc7fb4a151418bc5fce74298deb7fff3770a30408c25e0096b5f73683.exe

  • Size

    598KB

  • MD5

    63a77879c8119d3a877e9bfee98c6376

  • SHA1

    c639b571d95035cdc2681a448295205b4bcbc6b4

  • SHA256

    237184cfc7fb4a151418bc5fce74298deb7fff3770a30408c25e0096b5f73683

  • SHA512

    0389430e5cae8b48a14cb90cd695d73e4db33d5c3b38fb7322b621c346f75a973271836289e97cd6982bd471ecc8d5a33a1a7d06b0b61ea3b89cf2bc2bdc3be9

  • SSDEEP

    12288:jIny5DYTV10frJYb4xQG+3ZfiIjg5FzMlQzyRoD1TBLsBvL:rUTV10frJYbUQvZfiIj5lQCoD9

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\237184cfc7fb4a151418bc5fce74298deb7fff3770a30408c25e0096b5f73683.exe
    "C:\Users\Admin\AppData\Local\Temp\237184cfc7fb4a151418bc5fce74298deb7fff3770a30408c25e0096b5f73683.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:1752
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:956
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1276
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1500
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1168
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1416
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:436
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:612
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1388
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1984
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1684
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1696
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1520
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1792

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0d8859fd63e06851664c9a5c332e1956

            SHA1

            a563057d943b34943aab6a154f298c55540d7af5

            SHA256

            095dea909c20a4e1fe79ec4215900ceab57a5bef969af4aef2c5fc58981814a9

            SHA512

            62c5b0b0c002868e98edd6e2ab9deda1b62673a51942498b006d6b8b465cf54c7480df8a6a207e20867ad7a4bc57399f64e66e74f65874be889ab4ae291a3470

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            bf03903f93066286fd478b4820d9dbf4

            SHA1

            3abc58a9277a1e6586fac47fa715a6bb09aee57e

            SHA256

            041c3972af90950f8c1d1e872542475b401c35381789c2c5ac4bc7cb7f7a0b03

            SHA512

            762d00496a60b0517e5a570ad16b944412dfcee65873739d455c85033883c8175b2e6808d0830270869a55ec24bdb1f1facf35e336c983edcdacf8f0fe3f2aae

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            f0bc119c655f00f64f90468d08e92e7a

            SHA1

            c226f27b88b1d2bbf24ab83f28040b154fc9fc39

            SHA256

            8d6c96d58cd5a38e8194ab3ef99724ef28f97e8d86a05fa2616393aa737111a0

            SHA512

            ea498cf111560d15777de8b60973c1eb6ba821092926731eba2f488ee511b3acf8a23b44c080adc142935b370576d9720ba7ebc2bf2842e31868974978e4bec1

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            31238871d3b7dc2530adba77180335af

            SHA1

            ef72338f860fe047b87efc5dd2b910d582d4a78d

            SHA256

            f7c0757b66eb487345a4b03d20c91783800c63b418e5f391deb294dda764b8f7

            SHA512

            ccbfcb7e5cf398f2ad4d33da27d54a70965aadadd1ab0859856db52c8c8da16d76a3cc0eb41e974c68305429e30b4330633e3f07f5609b318582815b54f967ca

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            31238871d3b7dc2530adba77180335af

            SHA1

            ef72338f860fe047b87efc5dd2b910d582d4a78d

            SHA256

            f7c0757b66eb487345a4b03d20c91783800c63b418e5f391deb294dda764b8f7

            SHA512

            ccbfcb7e5cf398f2ad4d33da27d54a70965aadadd1ab0859856db52c8c8da16d76a3cc0eb41e974c68305429e30b4330633e3f07f5609b318582815b54f967ca

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            ae00ab20d6afbc20bef059f4a370e6ac

            SHA1

            9745cfd6d33315747430e812bccd554e1a7646cb

            SHA256

            ac8bf0230a12190bf4c47880fd529fa3ceac3c5ae4b0fbdfed0389d7ab43200d

            SHA512

            d50e80d72bfabe94fb331c68957fa0d9f8204f4060b8c3efa8e876deab677bc757383338f28dfaf1cf04f7b5a4c4f65c72d7933dc2ebc629f4c91bd6c8b799bd

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            ae00ab20d6afbc20bef059f4a370e6ac

            SHA1

            9745cfd6d33315747430e812bccd554e1a7646cb

            SHA256

            ac8bf0230a12190bf4c47880fd529fa3ceac3c5ae4b0fbdfed0389d7ab43200d

            SHA512

            d50e80d72bfabe94fb331c68957fa0d9f8204f4060b8c3efa8e876deab677bc757383338f28dfaf1cf04f7b5a4c4f65c72d7933dc2ebc629f4c91bd6c8b799bd

          • \Users\Admin\AppData\Local\Temp\nsd41E3.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd41E3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd41E3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd41E3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd41E3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0d8859fd63e06851664c9a5c332e1956

            SHA1

            a563057d943b34943aab6a154f298c55540d7af5

            SHA256

            095dea909c20a4e1fe79ec4215900ceab57a5bef969af4aef2c5fc58981814a9

            SHA512

            62c5b0b0c002868e98edd6e2ab9deda1b62673a51942498b006d6b8b465cf54c7480df8a6a207e20867ad7a4bc57399f64e66e74f65874be889ab4ae291a3470

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0d8859fd63e06851664c9a5c332e1956

            SHA1

            a563057d943b34943aab6a154f298c55540d7af5

            SHA256

            095dea909c20a4e1fe79ec4215900ceab57a5bef969af4aef2c5fc58981814a9

            SHA512

            62c5b0b0c002868e98edd6e2ab9deda1b62673a51942498b006d6b8b465cf54c7480df8a6a207e20867ad7a4bc57399f64e66e74f65874be889ab4ae291a3470

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0d8859fd63e06851664c9a5c332e1956

            SHA1

            a563057d943b34943aab6a154f298c55540d7af5

            SHA256

            095dea909c20a4e1fe79ec4215900ceab57a5bef969af4aef2c5fc58981814a9

            SHA512

            62c5b0b0c002868e98edd6e2ab9deda1b62673a51942498b006d6b8b465cf54c7480df8a6a207e20867ad7a4bc57399f64e66e74f65874be889ab4ae291a3470

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            bf03903f93066286fd478b4820d9dbf4

            SHA1

            3abc58a9277a1e6586fac47fa715a6bb09aee57e

            SHA256

            041c3972af90950f8c1d1e872542475b401c35381789c2c5ac4bc7cb7f7a0b03

            SHA512

            762d00496a60b0517e5a570ad16b944412dfcee65873739d455c85033883c8175b2e6808d0830270869a55ec24bdb1f1facf35e336c983edcdacf8f0fe3f2aae

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            bf03903f93066286fd478b4820d9dbf4

            SHA1

            3abc58a9277a1e6586fac47fa715a6bb09aee57e

            SHA256

            041c3972af90950f8c1d1e872542475b401c35381789c2c5ac4bc7cb7f7a0b03

            SHA512

            762d00496a60b0517e5a570ad16b944412dfcee65873739d455c85033883c8175b2e6808d0830270869a55ec24bdb1f1facf35e336c983edcdacf8f0fe3f2aae

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            f0bc119c655f00f64f90468d08e92e7a

            SHA1

            c226f27b88b1d2bbf24ab83f28040b154fc9fc39

            SHA256

            8d6c96d58cd5a38e8194ab3ef99724ef28f97e8d86a05fa2616393aa737111a0

            SHA512

            ea498cf111560d15777de8b60973c1eb6ba821092926731eba2f488ee511b3acf8a23b44c080adc142935b370576d9720ba7ebc2bf2842e31868974978e4bec1

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            31238871d3b7dc2530adba77180335af

            SHA1

            ef72338f860fe047b87efc5dd2b910d582d4a78d

            SHA256

            f7c0757b66eb487345a4b03d20c91783800c63b418e5f391deb294dda764b8f7

            SHA512

            ccbfcb7e5cf398f2ad4d33da27d54a70965aadadd1ab0859856db52c8c8da16d76a3cc0eb41e974c68305429e30b4330633e3f07f5609b318582815b54f967ca

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            ae00ab20d6afbc20bef059f4a370e6ac

            SHA1

            9745cfd6d33315747430e812bccd554e1a7646cb

            SHA256

            ac8bf0230a12190bf4c47880fd529fa3ceac3c5ae4b0fbdfed0389d7ab43200d

            SHA512

            d50e80d72bfabe94fb331c68957fa0d9f8204f4060b8c3efa8e876deab677bc757383338f28dfaf1cf04f7b5a4c4f65c72d7933dc2ebc629f4c91bd6c8b799bd

          • memory/436-70-0x0000000000000000-mapping.dmp
          • memory/612-76-0x0000000000000000-mapping.dmp
          • memory/956-57-0x0000000000000000-mapping.dmp
          • memory/1168-61-0x0000000000000000-mapping.dmp
          • memory/1276-58-0x0000000000000000-mapping.dmp
          • memory/1388-80-0x0000000000000000-mapping.dmp
          • memory/1416-64-0x0000000000000000-mapping.dmp
          • memory/1500-60-0x0000000000000000-mapping.dmp
          • memory/1684-86-0x0000000000000000-mapping.dmp
          • memory/1696-87-0x0000000000000000-mapping.dmp
          • memory/1752-54-0x0000000075931000-0x0000000075933000-memory.dmp
            Filesize

            8KB

          • memory/1752-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1752-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1984-81-0x0000000000000000-mapping.dmp