Analysis

  • max time kernel
    48s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:06

General

  • Target

    fc6bac4da1b4c998bcc46fa95424c9186ebf1fd33812706c7b907e9099299f34.exe

  • Size

    603KB

  • MD5

    12b72ac5fb4c6b635044348caa152da3

  • SHA1

    a684dcc63ef78666e3e9f704af7617b8e884f474

  • SHA256

    fc6bac4da1b4c998bcc46fa95424c9186ebf1fd33812706c7b907e9099299f34

  • SHA512

    0ff480d4f76675fa3e04e6fca4b9713a31d6b1953c3a5f7bc7facb172862d8f501c1c8884a9ec06f4ab8f5adc6eb2e0a311aa3341e67b0c83f5ccdd9c30f7db5

  • SSDEEP

    12288:tIny5DYTMI1IpTpQfbY38NE6o5VOtHPrKicOpV4m:5UTMaapQf5NOVOtvrKicC2m

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\fc6bac4da1b4c998bcc46fa95424c9186ebf1fd33812706c7b907e9099299f34.exe
    "C:\Users\Admin\AppData\Local\Temp\fc6bac4da1b4c998bcc46fa95424c9186ebf1fd33812706c7b907e9099299f34.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:1596
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1264
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1300
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:952
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:764
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1508
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1560
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2036
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1872
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:240
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1960
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1360
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1932
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2028

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a97d1fd5959bbb4ffac7bad3c53ab395

            SHA1

            b44eba5770636bee518ff33763c9ea06d1616429

            SHA256

            546f0bf1011297e55681505bf1fb5af3fe321fef59e0158329d2628134273e7a

            SHA512

            89778de74de4de5ffae457545b5f06aef5a16c1f1f6b9ad78c0775128fddbb51f32c4c2bff5ee56669612409e11eaa24e1f9dd6b2affae6526e81a257d602ee0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6b9605ad0def3c0708cb4e61f087feff

            SHA1

            d8967d4d1319524c59c0e08c74c7558b04e41cb4

            SHA256

            9d07f2e88b117facbaab3e5752617168db9c97bb80b65c4c15099a95b6475038

            SHA512

            8f8c332c016eb7b5f36e35a7bf449e057c8829969130393c4f6d026931c2b51d3f5ca63a98be64fca96aa503642c75a2ebc2b50dcca2119e614cc873fb8b8216

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a31540992640f48eb437e84a4e3fd45d

            SHA1

            96192bb4477c2858e11cc18badde5c308a1cb15d

            SHA256

            d3b6dc4efebc1f7ab83c7c34a0a2ed8627ed005555134f5b0655f7b7ac72b5cd

            SHA512

            376deaebff209108281061151db4298405fe4899f85a5358f14a34c31030b120866adc0734d195a22bc9de6d48536465a3fd3ea69ea07e6b1ae5ee623da26671

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a0d309fb8fc5edb6e001cc31f462919d

            SHA1

            f2fd922bc5bce5740bf8e28691b2665be53f87bf

            SHA256

            90b7d7ff5ddaaf90b807f9490d04ca08712e11f48a5d686cadeb6a8d36a1eec0

            SHA512

            ec2b5d3d8ab59a4c752fd30b4aeca8ef9ef8768953562ce8f7df1e33bf399539d4c1dc9d7f9177193949206018b8eb182d66e33851cf05c3ad8d86310d39546f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a0d309fb8fc5edb6e001cc31f462919d

            SHA1

            f2fd922bc5bce5740bf8e28691b2665be53f87bf

            SHA256

            90b7d7ff5ddaaf90b807f9490d04ca08712e11f48a5d686cadeb6a8d36a1eec0

            SHA512

            ec2b5d3d8ab59a4c752fd30b4aeca8ef9ef8768953562ce8f7df1e33bf399539d4c1dc9d7f9177193949206018b8eb182d66e33851cf05c3ad8d86310d39546f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            57b70b2145d3a112dd097d21cafaf327

            SHA1

            9386bc3bcd88d119f6aa75eef821dc6b745a5723

            SHA256

            061ec039425fbcf6ddf3f8ba09a2427574085b0d4d1002b9e8811ff9119e21b4

            SHA512

            8a897aaf38b3ffd3db52393727804257bf364e6168f580a1874f047a4060ce278221339b2b598d9be9ab8b34e02b8815d360e001acdb042b21d2ce8a2302d2dc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            57b70b2145d3a112dd097d21cafaf327

            SHA1

            9386bc3bcd88d119f6aa75eef821dc6b745a5723

            SHA256

            061ec039425fbcf6ddf3f8ba09a2427574085b0d4d1002b9e8811ff9119e21b4

            SHA512

            8a897aaf38b3ffd3db52393727804257bf364e6168f580a1874f047a4060ce278221339b2b598d9be9ab8b34e02b8815d360e001acdb042b21d2ce8a2302d2dc

          • \Users\Admin\AppData\Local\Temp\nseA44E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseA44E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseA44E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseA44E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseA44E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a97d1fd5959bbb4ffac7bad3c53ab395

            SHA1

            b44eba5770636bee518ff33763c9ea06d1616429

            SHA256

            546f0bf1011297e55681505bf1fb5af3fe321fef59e0158329d2628134273e7a

            SHA512

            89778de74de4de5ffae457545b5f06aef5a16c1f1f6b9ad78c0775128fddbb51f32c4c2bff5ee56669612409e11eaa24e1f9dd6b2affae6526e81a257d602ee0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a97d1fd5959bbb4ffac7bad3c53ab395

            SHA1

            b44eba5770636bee518ff33763c9ea06d1616429

            SHA256

            546f0bf1011297e55681505bf1fb5af3fe321fef59e0158329d2628134273e7a

            SHA512

            89778de74de4de5ffae457545b5f06aef5a16c1f1f6b9ad78c0775128fddbb51f32c4c2bff5ee56669612409e11eaa24e1f9dd6b2affae6526e81a257d602ee0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a97d1fd5959bbb4ffac7bad3c53ab395

            SHA1

            b44eba5770636bee518ff33763c9ea06d1616429

            SHA256

            546f0bf1011297e55681505bf1fb5af3fe321fef59e0158329d2628134273e7a

            SHA512

            89778de74de4de5ffae457545b5f06aef5a16c1f1f6b9ad78c0775128fddbb51f32c4c2bff5ee56669612409e11eaa24e1f9dd6b2affae6526e81a257d602ee0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6b9605ad0def3c0708cb4e61f087feff

            SHA1

            d8967d4d1319524c59c0e08c74c7558b04e41cb4

            SHA256

            9d07f2e88b117facbaab3e5752617168db9c97bb80b65c4c15099a95b6475038

            SHA512

            8f8c332c016eb7b5f36e35a7bf449e057c8829969130393c4f6d026931c2b51d3f5ca63a98be64fca96aa503642c75a2ebc2b50dcca2119e614cc873fb8b8216

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6b9605ad0def3c0708cb4e61f087feff

            SHA1

            d8967d4d1319524c59c0e08c74c7558b04e41cb4

            SHA256

            9d07f2e88b117facbaab3e5752617168db9c97bb80b65c4c15099a95b6475038

            SHA512

            8f8c332c016eb7b5f36e35a7bf449e057c8829969130393c4f6d026931c2b51d3f5ca63a98be64fca96aa503642c75a2ebc2b50dcca2119e614cc873fb8b8216

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a31540992640f48eb437e84a4e3fd45d

            SHA1

            96192bb4477c2858e11cc18badde5c308a1cb15d

            SHA256

            d3b6dc4efebc1f7ab83c7c34a0a2ed8627ed005555134f5b0655f7b7ac72b5cd

            SHA512

            376deaebff209108281061151db4298405fe4899f85a5358f14a34c31030b120866adc0734d195a22bc9de6d48536465a3fd3ea69ea07e6b1ae5ee623da26671

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a0d309fb8fc5edb6e001cc31f462919d

            SHA1

            f2fd922bc5bce5740bf8e28691b2665be53f87bf

            SHA256

            90b7d7ff5ddaaf90b807f9490d04ca08712e11f48a5d686cadeb6a8d36a1eec0

            SHA512

            ec2b5d3d8ab59a4c752fd30b4aeca8ef9ef8768953562ce8f7df1e33bf399539d4c1dc9d7f9177193949206018b8eb182d66e33851cf05c3ad8d86310d39546f

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            57b70b2145d3a112dd097d21cafaf327

            SHA1

            9386bc3bcd88d119f6aa75eef821dc6b745a5723

            SHA256

            061ec039425fbcf6ddf3f8ba09a2427574085b0d4d1002b9e8811ff9119e21b4

            SHA512

            8a897aaf38b3ffd3db52393727804257bf364e6168f580a1874f047a4060ce278221339b2b598d9be9ab8b34e02b8815d360e001acdb042b21d2ce8a2302d2dc

          • memory/240-82-0x0000000000000000-mapping.dmp

          • memory/764-62-0x0000000000000000-mapping.dmp

          • memory/952-61-0x0000000000000000-mapping.dmp

          • memory/1264-58-0x0000000000000000-mapping.dmp

          • memory/1300-59-0x0000000000000000-mapping.dmp

          • memory/1360-88-0x0000000000000000-mapping.dmp

          • memory/1508-64-0x0000000000000000-mapping.dmp

          • memory/1560-71-0x0000000000000000-mapping.dmp

          • memory/1596-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1596-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1596-54-0x00000000757B1000-0x00000000757B3000-memory.dmp

            Filesize

            8KB

          • memory/1596-57-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1872-81-0x0000000000000000-mapping.dmp

          • memory/1960-87-0x0000000000000000-mapping.dmp

          • memory/2036-77-0x0000000000000000-mapping.dmp