Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:59

General

  • Target

    1ebef7885fb8f72bed171b0019a5b0cd563743cf8cfa19c17eb97795802472a0.exe

  • Size

    446KB

  • MD5

    b0d36dece39c4c93864cb21335fc63f7

  • SHA1

    1d3d70dd7f9d89d43ac7254306e3018c6afee469

  • SHA256

    1ebef7885fb8f72bed171b0019a5b0cd563743cf8cfa19c17eb97795802472a0

  • SHA512

    1d8dd8268decce2e1f65e28828bbcd220cadf6d8c6457d6416ffe8992da86965f7a73c05583ade7b9da7b5e5e5587b5b2af22bdba8c324dd218d7976f9355249

  • SSDEEP

    12288:ZoYLMFy6lFkb55xFxJhUgJ/8soLHU9EL7:ZoBtklzJh/0soz7

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\1ebef7885fb8f72bed171b0019a5b0cd563743cf8cfa19c17eb97795802472a0.exe
    "C:\Users\Admin\AppData\Local\Temp\1ebef7885fb8f72bed171b0019a5b0cd563743cf8cfa19c17eb97795802472a0.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:1304
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2032
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1020
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1300
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2040
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1932
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1520
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1048
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1072
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1992
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:316
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1224
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:992
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1392

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e7b8b17fa05751848fc497d570a859d7

            SHA1

            149f44b447cf068b0e64aaf9b73aad2b60f2ab01

            SHA256

            5c69884668ef65ea2fe9a914c32a0c31ddf01f6c871255fcaa00c6ae5651473e

            SHA512

            3c92785e7c4a7c3c787e660a7b232c39cb1654cf817da612da69c4747a687f3793b4ecf13269b30b11645965bafa3f2534fe0ddad37603407f817a276ce88a89

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f51b91e25ddba8407c33e89b401fa880

            SHA1

            b1ef4e6385bc373e1beb37e2b6c8152e74b9524b

            SHA256

            1fcce771d010f516e9350bfdec45221598769a06d4016825d1370ec3b48d6d4b

            SHA512

            d0d34f6e65e38e3a0ce41ee457019870532cc8f950573f1a0259220d76b3274eeecc7029c286a2d31d7c8feebbad0aa52a3287e730798f02d6680285f21f7e7c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            533ea93f127f41b036f6859af3aa8ca8

            SHA1

            92b236fbd036022361a103a351bd5145876aef98

            SHA256

            0e869a9f8951bb38c378de90cce9c9ab6842293b32d8a9ba0c9bcbbe267b9d0d

            SHA512

            89519024a82075446caae482af51312651601de26815e33a5bb44868258f7e3085f54e929a165963ad5d7eff6d4e8e32230abe99823def22fd98aa85b0f6f02f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            891064a8b3a9b2aefa08654eadae274a

            SHA1

            513063a8656cc9cef480482766954acbb34b1e70

            SHA256

            2ca91782cd0573c08b53cb74db2034f6f5fe5942a702f8d533c8678d6dfd79a0

            SHA512

            9b0657d98772ac963cd4611d3beba73986f5f18985c6bb819e2928d75fba4cde9ad76897deb2bbe5189330805ac3dc164210ffaa973c2916230459c97d966292

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            891064a8b3a9b2aefa08654eadae274a

            SHA1

            513063a8656cc9cef480482766954acbb34b1e70

            SHA256

            2ca91782cd0573c08b53cb74db2034f6f5fe5942a702f8d533c8678d6dfd79a0

            SHA512

            9b0657d98772ac963cd4611d3beba73986f5f18985c6bb819e2928d75fba4cde9ad76897deb2bbe5189330805ac3dc164210ffaa973c2916230459c97d966292

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            76519bbc3f42273573580ccf7bcc44e2

            SHA1

            7f51daa23148239c0c1d65e245ed16fc9147ee4c

            SHA256

            fa9489308e8b8bce4af8109393d33a7258ba8f61bf8148788fe67647191ae688

            SHA512

            814a441305417818c6b1397ac89851b20eb99684cda0514a578ddf32b1e1f0d903ff21480f96199ceb2229068331a5859413a6b600cbe4acd49211929f0ebd97

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            76519bbc3f42273573580ccf7bcc44e2

            SHA1

            7f51daa23148239c0c1d65e245ed16fc9147ee4c

            SHA256

            fa9489308e8b8bce4af8109393d33a7258ba8f61bf8148788fe67647191ae688

            SHA512

            814a441305417818c6b1397ac89851b20eb99684cda0514a578ddf32b1e1f0d903ff21480f96199ceb2229068331a5859413a6b600cbe4acd49211929f0ebd97

          • \Users\Admin\AppData\Local\Temp\nst1EE9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst1EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst1EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst1EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst1EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e7b8b17fa05751848fc497d570a859d7

            SHA1

            149f44b447cf068b0e64aaf9b73aad2b60f2ab01

            SHA256

            5c69884668ef65ea2fe9a914c32a0c31ddf01f6c871255fcaa00c6ae5651473e

            SHA512

            3c92785e7c4a7c3c787e660a7b232c39cb1654cf817da612da69c4747a687f3793b4ecf13269b30b11645965bafa3f2534fe0ddad37603407f817a276ce88a89

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e7b8b17fa05751848fc497d570a859d7

            SHA1

            149f44b447cf068b0e64aaf9b73aad2b60f2ab01

            SHA256

            5c69884668ef65ea2fe9a914c32a0c31ddf01f6c871255fcaa00c6ae5651473e

            SHA512

            3c92785e7c4a7c3c787e660a7b232c39cb1654cf817da612da69c4747a687f3793b4ecf13269b30b11645965bafa3f2534fe0ddad37603407f817a276ce88a89

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e7b8b17fa05751848fc497d570a859d7

            SHA1

            149f44b447cf068b0e64aaf9b73aad2b60f2ab01

            SHA256

            5c69884668ef65ea2fe9a914c32a0c31ddf01f6c871255fcaa00c6ae5651473e

            SHA512

            3c92785e7c4a7c3c787e660a7b232c39cb1654cf817da612da69c4747a687f3793b4ecf13269b30b11645965bafa3f2534fe0ddad37603407f817a276ce88a89

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f51b91e25ddba8407c33e89b401fa880

            SHA1

            b1ef4e6385bc373e1beb37e2b6c8152e74b9524b

            SHA256

            1fcce771d010f516e9350bfdec45221598769a06d4016825d1370ec3b48d6d4b

            SHA512

            d0d34f6e65e38e3a0ce41ee457019870532cc8f950573f1a0259220d76b3274eeecc7029c286a2d31d7c8feebbad0aa52a3287e730798f02d6680285f21f7e7c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f51b91e25ddba8407c33e89b401fa880

            SHA1

            b1ef4e6385bc373e1beb37e2b6c8152e74b9524b

            SHA256

            1fcce771d010f516e9350bfdec45221598769a06d4016825d1370ec3b48d6d4b

            SHA512

            d0d34f6e65e38e3a0ce41ee457019870532cc8f950573f1a0259220d76b3274eeecc7029c286a2d31d7c8feebbad0aa52a3287e730798f02d6680285f21f7e7c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            533ea93f127f41b036f6859af3aa8ca8

            SHA1

            92b236fbd036022361a103a351bd5145876aef98

            SHA256

            0e869a9f8951bb38c378de90cce9c9ab6842293b32d8a9ba0c9bcbbe267b9d0d

            SHA512

            89519024a82075446caae482af51312651601de26815e33a5bb44868258f7e3085f54e929a165963ad5d7eff6d4e8e32230abe99823def22fd98aa85b0f6f02f

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            891064a8b3a9b2aefa08654eadae274a

            SHA1

            513063a8656cc9cef480482766954acbb34b1e70

            SHA256

            2ca91782cd0573c08b53cb74db2034f6f5fe5942a702f8d533c8678d6dfd79a0

            SHA512

            9b0657d98772ac963cd4611d3beba73986f5f18985c6bb819e2928d75fba4cde9ad76897deb2bbe5189330805ac3dc164210ffaa973c2916230459c97d966292

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            76519bbc3f42273573580ccf7bcc44e2

            SHA1

            7f51daa23148239c0c1d65e245ed16fc9147ee4c

            SHA256

            fa9489308e8b8bce4af8109393d33a7258ba8f61bf8148788fe67647191ae688

            SHA512

            814a441305417818c6b1397ac89851b20eb99684cda0514a578ddf32b1e1f0d903ff21480f96199ceb2229068331a5859413a6b600cbe4acd49211929f0ebd97

          • memory/316-85-0x0000000000000000-mapping.dmp

          • memory/1020-58-0x0000000000000000-mapping.dmp

          • memory/1048-75-0x0000000000000000-mapping.dmp

          • memory/1072-79-0x0000000000000000-mapping.dmp

          • memory/1224-86-0x0000000000000000-mapping.dmp

          • memory/1300-60-0x0000000000000000-mapping.dmp

          • memory/1304-54-0x00000000762E1000-0x00000000762E3000-memory.dmp

            Filesize

            8KB

          • memory/1520-69-0x0000000000000000-mapping.dmp

          • memory/1932-63-0x0000000000000000-mapping.dmp

          • memory/1992-80-0x0000000000000000-mapping.dmp

          • memory/2032-57-0x0000000000000000-mapping.dmp

          • memory/2040-61-0x0000000000000000-mapping.dmp