Analysis

  • max time kernel
    48s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:58

General

  • Target

    3f7879442bcacc8d4634fdc1a0789132a2b4b4e5f73152d7e3123a3a76857679.exe

  • Size

    446KB

  • MD5

    0d9205fdebdd04f4574525970579f03d

  • SHA1

    ec4aae06c0f0460243a5a06ed572eec24975daac

  • SHA256

    3f7879442bcacc8d4634fdc1a0789132a2b4b4e5f73152d7e3123a3a76857679

  • SHA512

    0c8d126e403508e38ba32b5bdc2a0a746cc7f5a4da63d7c541c39123a8ff64064723b3883bb3ce035ac912ef367feb1cdff3b7127a691690104b139087811d23

  • SSDEEP

    12288:KOZlcz8Jz7tFcsY/FnxE/jU4/r8ZmVBo3ZiQRmqDXd1:K1Y/Fl6EnKmKZ9Xd1

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\3f7879442bcacc8d4634fdc1a0789132a2b4b4e5f73152d7e3123a3a76857679.exe
    "C:\Users\Admin\AppData\Local\Temp\3f7879442bcacc8d4634fdc1a0789132a2b4b4e5f73152d7e3123a3a76857679.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:2044
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1128
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:568
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1192
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:560
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1392
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1820
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:328
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2012
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1828
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1176
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1076
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1652
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1648

          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

            9cb71a388284fb25b006ed3b0529d8ef

            SHA1

            43fab9caa3c60a5213bca89656d623fda9d04f4a

            SHA256

            56adcd256086b0fedcbe71d21f0cfce4ceeaeb1577ce61907474d19a181d1175

            SHA512

            c784c42f7176b2bb87f67d5f8ff0b48d2dc71d830c6157fcd28f88977230d408710e00deb0ed2056f27b7881cdcceca3cd40a4695d65160811eda1d1438fc497

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

            244KB

            MD5

            94e959cb92aa53143f665bf8a55c8fad

            SHA1

            8055b1e5612825e3f524cb64e4794c75ca4a1d84

            SHA256

            ff10ad3503670d146f0508aa0f12ffafb3fa84db4ee853653db6648509164afd

            SHA512

            7ab62d1e5d5fa0dae43800789821d6a8fa3733f6e28d5dc6b29ec7ab2d1b0adce0e7b90486d570015c0819fbda3dd54945cb07e468b50952bb53e4ec97e48c09

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

            108KB

            MD5

            4c512ed6b16a8e4966f7186ad4c87120

            SHA1

            c394d2c73a79b809f4ed92513ab27a5654c1d4cc

            SHA256

            b2345789dd227bf1cb2d1f7bde6cdc7513e3c036c93b9b1d04c14aa79abe32db

            SHA512

            fa4cd8be7fb5e95fa29fdd574748713974c59693a1fa78e73b781b8ac2ca4e82c802e94085054734499aeda090071f5cb4970bdbef8b6a6a00ff8f0c412db40b

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

            176KB

            MD5

            0bcea8299cc2135ac05dbeec91ad53a8

            SHA1

            5b8e238525a74b151f160d0b24c09c28d0f55c4d

            SHA256

            357b034ad0ca0a12b644156e36c5bc5b8c43c2d4b44dffc37235015bb5e9bd2a

            SHA512

            04f47306473b7b7d6d0be158dd4aea130896c2c0f0a6e1e7d7fdf3762c8917b29452da023912670e1449293c9e2bee3887ecb65f0f2e7ae99266bc274bba4e6a

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

            176KB

            MD5

            0bcea8299cc2135ac05dbeec91ad53a8

            SHA1

            5b8e238525a74b151f160d0b24c09c28d0f55c4d

            SHA256

            357b034ad0ca0a12b644156e36c5bc5b8c43c2d4b44dffc37235015bb5e9bd2a

            SHA512

            04f47306473b7b7d6d0be158dd4aea130896c2c0f0a6e1e7d7fdf3762c8917b29452da023912670e1449293c9e2bee3887ecb65f0f2e7ae99266bc274bba4e6a

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

            158KB

            MD5

            9091b3065ec966ba4315bdde430372b3

            SHA1

            7ce0c5adaff0a519c90f5cc318ff22b943ad299f

            SHA256

            23b31cd0d9cc736f0682cb1a96427692a4b5f85fdb5fd13b5d86480022518042

            SHA512

            5e2dfe3f7a42c69acb76b22e2eac2c04ec2da83b6623c60ea875cee246fb4f015f62a333e239085838934212567edb863653042249cb625bca081ff2b0f202d6

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

            158KB

            MD5

            9091b3065ec966ba4315bdde430372b3

            SHA1

            7ce0c5adaff0a519c90f5cc318ff22b943ad299f

            SHA256

            23b31cd0d9cc736f0682cb1a96427692a4b5f85fdb5fd13b5d86480022518042

            SHA512

            5e2dfe3f7a42c69acb76b22e2eac2c04ec2da83b6623c60ea875cee246fb4f015f62a333e239085838934212567edb863653042249cb625bca081ff2b0f202d6

          • \Users\Admin\AppData\Local\Temp\nsoB7BE.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoB7BE.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoB7BE.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoB7BE.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoB7BE.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            9cb71a388284fb25b006ed3b0529d8ef

            SHA1

            43fab9caa3c60a5213bca89656d623fda9d04f4a

            SHA256

            56adcd256086b0fedcbe71d21f0cfce4ceeaeb1577ce61907474d19a181d1175

            SHA512

            c784c42f7176b2bb87f67d5f8ff0b48d2dc71d830c6157fcd28f88977230d408710e00deb0ed2056f27b7881cdcceca3cd40a4695d65160811eda1d1438fc497

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            9cb71a388284fb25b006ed3b0529d8ef

            SHA1

            43fab9caa3c60a5213bca89656d623fda9d04f4a

            SHA256

            56adcd256086b0fedcbe71d21f0cfce4ceeaeb1577ce61907474d19a181d1175

            SHA512

            c784c42f7176b2bb87f67d5f8ff0b48d2dc71d830c6157fcd28f88977230d408710e00deb0ed2056f27b7881cdcceca3cd40a4695d65160811eda1d1438fc497

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            9cb71a388284fb25b006ed3b0529d8ef

            SHA1

            43fab9caa3c60a5213bca89656d623fda9d04f4a

            SHA256

            56adcd256086b0fedcbe71d21f0cfce4ceeaeb1577ce61907474d19a181d1175

            SHA512

            c784c42f7176b2bb87f67d5f8ff0b48d2dc71d830c6157fcd28f88977230d408710e00deb0ed2056f27b7881cdcceca3cd40a4695d65160811eda1d1438fc497

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            94e959cb92aa53143f665bf8a55c8fad

            SHA1

            8055b1e5612825e3f524cb64e4794c75ca4a1d84

            SHA256

            ff10ad3503670d146f0508aa0f12ffafb3fa84db4ee853653db6648509164afd

            SHA512

            7ab62d1e5d5fa0dae43800789821d6a8fa3733f6e28d5dc6b29ec7ab2d1b0adce0e7b90486d570015c0819fbda3dd54945cb07e468b50952bb53e4ec97e48c09

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            94e959cb92aa53143f665bf8a55c8fad

            SHA1

            8055b1e5612825e3f524cb64e4794c75ca4a1d84

            SHA256

            ff10ad3503670d146f0508aa0f12ffafb3fa84db4ee853653db6648509164afd

            SHA512

            7ab62d1e5d5fa0dae43800789821d6a8fa3733f6e28d5dc6b29ec7ab2d1b0adce0e7b90486d570015c0819fbda3dd54945cb07e468b50952bb53e4ec97e48c09

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            4c512ed6b16a8e4966f7186ad4c87120

            SHA1

            c394d2c73a79b809f4ed92513ab27a5654c1d4cc

            SHA256

            b2345789dd227bf1cb2d1f7bde6cdc7513e3c036c93b9b1d04c14aa79abe32db

            SHA512

            fa4cd8be7fb5e95fa29fdd574748713974c59693a1fa78e73b781b8ac2ca4e82c802e94085054734499aeda090071f5cb4970bdbef8b6a6a00ff8f0c412db40b

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            0bcea8299cc2135ac05dbeec91ad53a8

            SHA1

            5b8e238525a74b151f160d0b24c09c28d0f55c4d

            SHA256

            357b034ad0ca0a12b644156e36c5bc5b8c43c2d4b44dffc37235015bb5e9bd2a

            SHA512

            04f47306473b7b7d6d0be158dd4aea130896c2c0f0a6e1e7d7fdf3762c8917b29452da023912670e1449293c9e2bee3887ecb65f0f2e7ae99266bc274bba4e6a

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            9091b3065ec966ba4315bdde430372b3

            SHA1

            7ce0c5adaff0a519c90f5cc318ff22b943ad299f

            SHA256

            23b31cd0d9cc736f0682cb1a96427692a4b5f85fdb5fd13b5d86480022518042

            SHA512

            5e2dfe3f7a42c69acb76b22e2eac2c04ec2da83b6623c60ea875cee246fb4f015f62a333e239085838934212567edb863653042249cb625bca081ff2b0f202d6

          • memory/328-75-0x0000000000000000-mapping.dmp
          • memory/560-61-0x0000000000000000-mapping.dmp
          • memory/568-58-0x0000000000000000-mapping.dmp
          • memory/1076-86-0x0000000000000000-mapping.dmp
          • memory/1128-57-0x0000000000000000-mapping.dmp
          • memory/1176-85-0x0000000000000000-mapping.dmp
          • memory/1192-60-0x0000000000000000-mapping.dmp
          • memory/1392-63-0x0000000000000000-mapping.dmp
          • memory/1820-69-0x0000000000000000-mapping.dmp
          • memory/1828-80-0x0000000000000000-mapping.dmp
          • memory/2012-79-0x0000000000000000-mapping.dmp
          • memory/2044-54-0x0000000076941000-0x0000000076943000-memory.dmp
            Filesize

            8KB