Analysis

  • max time kernel
    57s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:49

General

  • Target

    f5d8235262512aab3a8e056b0cb8ed730fe4a0038b7e1d28b7758678b70f41c0.exe

  • Size

    446KB

  • MD5

    b249846b3f6be697212159ef705f210f

  • SHA1

    1aac8e89c5fee77bac5c8f7f13bb6eb370b67ef7

  • SHA256

    f5d8235262512aab3a8e056b0cb8ed730fe4a0038b7e1d28b7758678b70f41c0

  • SHA512

    20ab0d7d84c8aee193d1030772c57661019bcda1c880e803d1778676a1d9f5bb0a0eb956e5a634e6b628503123a8e1ae2c9bb9549d73d5d6f91e45d0ac7f68b9

  • SSDEEP

    12288:kqgZQPDo+yI4O5ErUcGsaoOPepq3F1vspjCwelO:ka7oDQc/adPepqfvsp2JO

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\f5d8235262512aab3a8e056b0cb8ed730fe4a0038b7e1d28b7758678b70f41c0.exe
    "C:\Users\Admin\AppData\Local\Temp\f5d8235262512aab3a8e056b0cb8ed730fe4a0038b7e1d28b7758678b70f41c0.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:1648
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1156
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1732
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1764
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1048
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1780
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1616
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1380
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:968
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2028
          • 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:1840
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1864
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:952

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e32beadb1c33ce86af2db7fa32fbaff3

            SHA1

            8ed2182d26e4e33335dacda61db08e4bd8d3a894

            SHA256

            e5faf83b27aa76422147d2ca46be986243c46659f6e827efe57bcd6e1c7bb500

            SHA512

            957bc62af59dc293334986e4037a3550279d357fd9199442bf59bd80efbf22f9eb4e73448d08e43928a784ac0b424ea45ff6123507ed05efe607592f2ac253bc

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3ea8fec7b85321bdc2ddb0fbd3904847

            SHA1

            1e3a5c5cf075e0fc2b450475f0e72a9c398602a8

            SHA256

            f9a364ea3dd4fbcc84072d798429212c0de6e33b2498d018b756dd041fa4ae39

            SHA512

            6ecc89af5f8cdde8a02c9527bd3499e49176f33ccaa505c34ac84d5ec636594328beada3c9f9a7d4cb49a368915608eb6df10c71936a846cc051052eec39f357

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0638ab1996dbab01854683c6c18af131

            SHA1

            9bdb8e57f388ab8a9392d28de6af15fce6789f68

            SHA256

            cc36293a67d54aa710d640bd6c3a70d8a2fcf8cb00e84582d042f48fd17a7490

            SHA512

            ca9a68b11174f17683ccf17c2bf13a4e76e3c53149a0f72c892dacf1a4d1c7b439ebfed822215c300a135c81e2b6a716b7bc0abd48c90dcdc93bb470ba46cedb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0d3c788600ef224ce05e7f2e67bc58dd

            SHA1

            c441b12b83db11309068abfc4c98601a1f5d3d5d

            SHA256

            79fb672c43aa9e886d108639fa81beec4cf95f31bf8ac240c62b09368ed56049

            SHA512

            2b14aa38220932a0c2db4b0f6179d7f3d6c21f023e1fdd271aca1970dbac6ef973b0f4865de0790a2e084c0dcd343d982299a82c4a9c82ec32ad422ec99e6093

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0d3c788600ef224ce05e7f2e67bc58dd

            SHA1

            c441b12b83db11309068abfc4c98601a1f5d3d5d

            SHA256

            79fb672c43aa9e886d108639fa81beec4cf95f31bf8ac240c62b09368ed56049

            SHA512

            2b14aa38220932a0c2db4b0f6179d7f3d6c21f023e1fdd271aca1970dbac6ef973b0f4865de0790a2e084c0dcd343d982299a82c4a9c82ec32ad422ec99e6093

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            98d002d5c5c2fdba1af858e26bc50624

            SHA1

            ef6d418b874d81b37aa1a81e8ddfe9ea486593a2

            SHA256

            9ed092177e4df024083e0f45b35f0b3cb0c88d1605d82bc8b62f80a2a38aacd0

            SHA512

            06bf635436146eb7cb3133e62762573a4ca96d42ff5f253e2773257e86236baaaab97cb5d49f6e67fe0c6037f56520aa812782b4946c37aa9c79492404cb87ae

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            98d002d5c5c2fdba1af858e26bc50624

            SHA1

            ef6d418b874d81b37aa1a81e8ddfe9ea486593a2

            SHA256

            9ed092177e4df024083e0f45b35f0b3cb0c88d1605d82bc8b62f80a2a38aacd0

            SHA512

            06bf635436146eb7cb3133e62762573a4ca96d42ff5f253e2773257e86236baaaab97cb5d49f6e67fe0c6037f56520aa812782b4946c37aa9c79492404cb87ae

          • \Users\Admin\AppData\Local\Temp\nsjB79F.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjB79F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB79F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB79F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB79F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e32beadb1c33ce86af2db7fa32fbaff3

            SHA1

            8ed2182d26e4e33335dacda61db08e4bd8d3a894

            SHA256

            e5faf83b27aa76422147d2ca46be986243c46659f6e827efe57bcd6e1c7bb500

            SHA512

            957bc62af59dc293334986e4037a3550279d357fd9199442bf59bd80efbf22f9eb4e73448d08e43928a784ac0b424ea45ff6123507ed05efe607592f2ac253bc

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e32beadb1c33ce86af2db7fa32fbaff3

            SHA1

            8ed2182d26e4e33335dacda61db08e4bd8d3a894

            SHA256

            e5faf83b27aa76422147d2ca46be986243c46659f6e827efe57bcd6e1c7bb500

            SHA512

            957bc62af59dc293334986e4037a3550279d357fd9199442bf59bd80efbf22f9eb4e73448d08e43928a784ac0b424ea45ff6123507ed05efe607592f2ac253bc

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e32beadb1c33ce86af2db7fa32fbaff3

            SHA1

            8ed2182d26e4e33335dacda61db08e4bd8d3a894

            SHA256

            e5faf83b27aa76422147d2ca46be986243c46659f6e827efe57bcd6e1c7bb500

            SHA512

            957bc62af59dc293334986e4037a3550279d357fd9199442bf59bd80efbf22f9eb4e73448d08e43928a784ac0b424ea45ff6123507ed05efe607592f2ac253bc

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3ea8fec7b85321bdc2ddb0fbd3904847

            SHA1

            1e3a5c5cf075e0fc2b450475f0e72a9c398602a8

            SHA256

            f9a364ea3dd4fbcc84072d798429212c0de6e33b2498d018b756dd041fa4ae39

            SHA512

            6ecc89af5f8cdde8a02c9527bd3499e49176f33ccaa505c34ac84d5ec636594328beada3c9f9a7d4cb49a368915608eb6df10c71936a846cc051052eec39f357

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3ea8fec7b85321bdc2ddb0fbd3904847

            SHA1

            1e3a5c5cf075e0fc2b450475f0e72a9c398602a8

            SHA256

            f9a364ea3dd4fbcc84072d798429212c0de6e33b2498d018b756dd041fa4ae39

            SHA512

            6ecc89af5f8cdde8a02c9527bd3499e49176f33ccaa505c34ac84d5ec636594328beada3c9f9a7d4cb49a368915608eb6df10c71936a846cc051052eec39f357

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0638ab1996dbab01854683c6c18af131

            SHA1

            9bdb8e57f388ab8a9392d28de6af15fce6789f68

            SHA256

            cc36293a67d54aa710d640bd6c3a70d8a2fcf8cb00e84582d042f48fd17a7490

            SHA512

            ca9a68b11174f17683ccf17c2bf13a4e76e3c53149a0f72c892dacf1a4d1c7b439ebfed822215c300a135c81e2b6a716b7bc0abd48c90dcdc93bb470ba46cedb

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0d3c788600ef224ce05e7f2e67bc58dd

            SHA1

            c441b12b83db11309068abfc4c98601a1f5d3d5d

            SHA256

            79fb672c43aa9e886d108639fa81beec4cf95f31bf8ac240c62b09368ed56049

            SHA512

            2b14aa38220932a0c2db4b0f6179d7f3d6c21f023e1fdd271aca1970dbac6ef973b0f4865de0790a2e084c0dcd343d982299a82c4a9c82ec32ad422ec99e6093

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            98d002d5c5c2fdba1af858e26bc50624

            SHA1

            ef6d418b874d81b37aa1a81e8ddfe9ea486593a2

            SHA256

            9ed092177e4df024083e0f45b35f0b3cb0c88d1605d82bc8b62f80a2a38aacd0

            SHA512

            06bf635436146eb7cb3133e62762573a4ca96d42ff5f253e2773257e86236baaaab97cb5d49f6e67fe0c6037f56520aa812782b4946c37aa9c79492404cb87ae

          • memory/968-79-0x0000000000000000-mapping.dmp

          • memory/1048-61-0x0000000000000000-mapping.dmp

          • memory/1156-57-0x0000000000000000-mapping.dmp

          • memory/1380-75-0x0000000000000000-mapping.dmp

          • memory/1616-69-0x0000000000000000-mapping.dmp

          • memory/1648-54-0x0000000075BE1000-0x0000000075BE3000-memory.dmp

            Filesize

            8KB

          • memory/1684-85-0x0000000000000000-mapping.dmp

          • memory/1732-58-0x0000000000000000-mapping.dmp

          • memory/1764-60-0x0000000000000000-mapping.dmp

          • memory/1780-63-0x0000000000000000-mapping.dmp

          • memory/1840-86-0x0000000000000000-mapping.dmp

          • memory/2028-80-0x0000000000000000-mapping.dmp