Analysis

  • max time kernel
    62s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    ab28f86c994e17e689d252ddb88b7df23f0a444741711dd5ecd2e90a99c7a999.exe

  • Size

    601KB

  • MD5

    4eed14837798242ab5c8801bd6a173da

  • SHA1

    163899e9b9ad2bcc8decd2eb817a84ad09bbb1ac

  • SHA256

    ab28f86c994e17e689d252ddb88b7df23f0a444741711dd5ecd2e90a99c7a999

  • SHA512

    48636d9e2f455af389eb49f25b86cca5b1bc95adfeb69c6a40514f07df88d628b737927e78047147bd605278259bb8257a236da7918b97f54e832e774af5535a

  • SSDEEP

    12288:yIny5DYTPIlTi4Ozewm4wHOu25nz04d4j7kExrjn8:0UTPKmPzewlwHN2dqjgkb

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\ab28f86c994e17e689d252ddb88b7df23f0a444741711dd5ecd2e90a99c7a999.exe
    "C:\Users\Admin\AppData\Local\Temp\ab28f86c994e17e689d252ddb88b7df23f0a444741711dd5ecd2e90a99c7a999.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:1260
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:268
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:460
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:516
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:588
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:300
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:316
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1544
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1584
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1784
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1684
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1928
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1316

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fb88957b858037d99a49157c0a8c292a

            SHA1

            6a64a2c992779e19c7515f64dbe23155889189a4

            SHA256

            5a494af92e1574b793c20380aba2614ab4a1753b0917e734b359cc4adcece766

            SHA512

            8e1eb1374808e0bbb8c3d1eeebde16f52d7939660b9e556149eece9ea13f8c6c0f8cf8ab421347770dc3435aa5d4ac58a062f981fdc75103efcb6971e57c1697

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1bd97054182a3e68f2f304307ac089b9

            SHA1

            104e50ae98e4916f91633a622d4f8db548053d90

            SHA256

            34cb57612ed6d8e4d10b6797ffb7367a2841c4622af7247d6369835462260c0d

            SHA512

            18e04c100d1779333b68a355503590045dda4e10541adaaa083a35958de9e04794bbec1b9970657a9f473bf7b90c46763c53fad57d04f33b78abe424e6890b7c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a59aa37e89b3b7f566ac647fa8b76f28

            SHA1

            355eef7cd266bced6c62ad37faf1f3db57b43ebb

            SHA256

            bb8df9dee86e03e65ffa281f791ed5b2a622d7b75c5aa8976feb9553eb4910a7

            SHA512

            9773014c9088697533f8def6bde51568d30df86263afc3fa5123dc946d73e3ec5cc41ae80b9502b06e44f8578a76ca687c39a611cdef28ed8db29d4b5f86270a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca349132f3147082807929c6b3ad1c04

            SHA1

            8907f88c8be2c7c37c2aed5c0feeccffee1c0812

            SHA256

            e4420f1d7218e6e85d24b71bd50febdb0c1d02a4e6ab146020e40ecf6486c4b8

            SHA512

            87344dc52b3a00f01608662f094fd73d6c9384101da2d82f93a244e6fe9b6dbecb48c33c11af43d47e09348cf62fcdf043096af202e217c82f3801a4306245ae

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca349132f3147082807929c6b3ad1c04

            SHA1

            8907f88c8be2c7c37c2aed5c0feeccffee1c0812

            SHA256

            e4420f1d7218e6e85d24b71bd50febdb0c1d02a4e6ab146020e40ecf6486c4b8

            SHA512

            87344dc52b3a00f01608662f094fd73d6c9384101da2d82f93a244e6fe9b6dbecb48c33c11af43d47e09348cf62fcdf043096af202e217c82f3801a4306245ae

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            086213cbec0904cf0c22406a6d8ea8f7

            SHA1

            17c68f3762a0c6caf9c258b55a0267f790b3abf2

            SHA256

            9d0cbf8bad7914f027ca872e40bc2a19eeae9d1fda37d072a02b66a10dfdb33a

            SHA512

            cc2774995ba0fb3d75530d138f725d1db66709cb62fc9b3ddd80daff0f366a176028abe839be0891ce46cc6a75904d08b71f7f4cf0824e1424fb30a1aed0441d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            086213cbec0904cf0c22406a6d8ea8f7

            SHA1

            17c68f3762a0c6caf9c258b55a0267f790b3abf2

            SHA256

            9d0cbf8bad7914f027ca872e40bc2a19eeae9d1fda37d072a02b66a10dfdb33a

            SHA512

            cc2774995ba0fb3d75530d138f725d1db66709cb62fc9b3ddd80daff0f366a176028abe839be0891ce46cc6a75904d08b71f7f4cf0824e1424fb30a1aed0441d

          • \Users\Admin\AppData\Local\Temp\nsjAD43.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjAD43.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjAD43.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjAD43.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjAD43.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fb88957b858037d99a49157c0a8c292a

            SHA1

            6a64a2c992779e19c7515f64dbe23155889189a4

            SHA256

            5a494af92e1574b793c20380aba2614ab4a1753b0917e734b359cc4adcece766

            SHA512

            8e1eb1374808e0bbb8c3d1eeebde16f52d7939660b9e556149eece9ea13f8c6c0f8cf8ab421347770dc3435aa5d4ac58a062f981fdc75103efcb6971e57c1697

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fb88957b858037d99a49157c0a8c292a

            SHA1

            6a64a2c992779e19c7515f64dbe23155889189a4

            SHA256

            5a494af92e1574b793c20380aba2614ab4a1753b0917e734b359cc4adcece766

            SHA512

            8e1eb1374808e0bbb8c3d1eeebde16f52d7939660b9e556149eece9ea13f8c6c0f8cf8ab421347770dc3435aa5d4ac58a062f981fdc75103efcb6971e57c1697

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fb88957b858037d99a49157c0a8c292a

            SHA1

            6a64a2c992779e19c7515f64dbe23155889189a4

            SHA256

            5a494af92e1574b793c20380aba2614ab4a1753b0917e734b359cc4adcece766

            SHA512

            8e1eb1374808e0bbb8c3d1eeebde16f52d7939660b9e556149eece9ea13f8c6c0f8cf8ab421347770dc3435aa5d4ac58a062f981fdc75103efcb6971e57c1697

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1bd97054182a3e68f2f304307ac089b9

            SHA1

            104e50ae98e4916f91633a622d4f8db548053d90

            SHA256

            34cb57612ed6d8e4d10b6797ffb7367a2841c4622af7247d6369835462260c0d

            SHA512

            18e04c100d1779333b68a355503590045dda4e10541adaaa083a35958de9e04794bbec1b9970657a9f473bf7b90c46763c53fad57d04f33b78abe424e6890b7c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1bd97054182a3e68f2f304307ac089b9

            SHA1

            104e50ae98e4916f91633a622d4f8db548053d90

            SHA256

            34cb57612ed6d8e4d10b6797ffb7367a2841c4622af7247d6369835462260c0d

            SHA512

            18e04c100d1779333b68a355503590045dda4e10541adaaa083a35958de9e04794bbec1b9970657a9f473bf7b90c46763c53fad57d04f33b78abe424e6890b7c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a59aa37e89b3b7f566ac647fa8b76f28

            SHA1

            355eef7cd266bced6c62ad37faf1f3db57b43ebb

            SHA256

            bb8df9dee86e03e65ffa281f791ed5b2a622d7b75c5aa8976feb9553eb4910a7

            SHA512

            9773014c9088697533f8def6bde51568d30df86263afc3fa5123dc946d73e3ec5cc41ae80b9502b06e44f8578a76ca687c39a611cdef28ed8db29d4b5f86270a

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca349132f3147082807929c6b3ad1c04

            SHA1

            8907f88c8be2c7c37c2aed5c0feeccffee1c0812

            SHA256

            e4420f1d7218e6e85d24b71bd50febdb0c1d02a4e6ab146020e40ecf6486c4b8

            SHA512

            87344dc52b3a00f01608662f094fd73d6c9384101da2d82f93a244e6fe9b6dbecb48c33c11af43d47e09348cf62fcdf043096af202e217c82f3801a4306245ae

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            086213cbec0904cf0c22406a6d8ea8f7

            SHA1

            17c68f3762a0c6caf9c258b55a0267f790b3abf2

            SHA256

            9d0cbf8bad7914f027ca872e40bc2a19eeae9d1fda37d072a02b66a10dfdb33a

            SHA512

            cc2774995ba0fb3d75530d138f725d1db66709cb62fc9b3ddd80daff0f366a176028abe839be0891ce46cc6a75904d08b71f7f4cf0824e1424fb30a1aed0441d

          • memory/268-58-0x0000000000000000-mapping.dmp

          • memory/300-70-0x0000000000000000-mapping.dmp

          • memory/316-77-0x0000000000000000-mapping.dmp

          • memory/460-61-0x0000000000000000-mapping.dmp

          • memory/516-62-0x0000000000000000-mapping.dmp

          • memory/588-64-0x0000000000000000-mapping.dmp

          • memory/1260-54-0x0000000075C41000-0x0000000075C43000-memory.dmp

            Filesize

            8KB

          • memory/1260-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1260-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1260-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1544-81-0x0000000000000000-mapping.dmp

          • memory/1584-82-0x0000000000000000-mapping.dmp

          • memory/1684-88-0x0000000000000000-mapping.dmp

          • memory/1784-87-0x0000000000000000-mapping.dmp

          • memory/2020-57-0x0000000000000000-mapping.dmp