Analysis

  • max time kernel
    63s
  • 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 10:30

General

  • Target

    2a7c3e4e0d62e74a080346e2589feb16d0f9c9c3635c95d88c11818a99d44189.exe

  • Size

    601KB

  • MD5

    326066ec0e83148111edc4d2315a8923

  • SHA1

    a681649eeefb8ff68929cf420ba2d9686e68ccf1

  • SHA256

    2a7c3e4e0d62e74a080346e2589feb16d0f9c9c3635c95d88c11818a99d44189

  • SHA512

    c2d2367b61b1084f34042866d02ee3d9cefdf8bd99a613b52e28eb6158b8b69a824bd380aad958aeda4190fa16df0bb5b8ad131b99e27d32ebbe4b10bae2f20e

  • SSDEEP

    12288:CIny5DYT68E/ugyCgHbBAzwxWjVMGVqFx5udE:kUTRYdgHFqvE3uS

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\2a7c3e4e0d62e74a080346e2589feb16d0f9c9c3635c95d88c11818a99d44189.exe
    "C:\Users\Admin\AppData\Local\Temp\2a7c3e4e0d62e74a080346e2589feb16d0f9c9c3635c95d88c11818a99d44189.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:1656
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:684
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:584
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:788
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1292
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1296
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:552
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:772
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:272
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1280
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1352
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:620
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:976
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1736

          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

            d6cff7f5fa1ee4d0246ea78033ee5ed5

            SHA1

            ad719d4cd9e1777c61c67f2c7dac033fcf253bd5

            SHA256

            f1de79860a75546a01554bb4d06b677cf5b6656b14864eb4192bbc740c6b2cdf

            SHA512

            743be51e34204a17a391df3a092b335a5054a170807f1bd2f8dad614ca9a761b943ffcd516e21021e14d87cd8ff9139e0671fa894840ca25dfd4d253d329832c

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

            241KB

            MD5

            24efffb9a82312cce0ac46fa3071532b

            SHA1

            d48481329986dd591a89e64e2cbd370f5e9c0d19

            SHA256

            2175c2d45b6f50406691f014a4dfac52642c460e5f0d463dea78e366337f9149

            SHA512

            c6ca0cbfd054826606e513b6d67918f9dc141b0152b916c0c711d47c0ba2ccece3a4bead32f6ff081ff32db6d1d34df482f21a509a8fb673b770f4b768e3048e

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

            108KB

            MD5

            7e2198dc26d52ef543257625b70a09c9

            SHA1

            add1a4d5b8639b60650d8a06d42df0b5f54fe57e

            SHA256

            7a1f86939ecf61fcdf38b280773b340b4daf12df563721308fa136748172bde3

            SHA512

            bf0d8e02b795c697cc262d4950a773323f495ae602ca821ebdbd9a824d97cf39889eb8a2447e8e6b97ce4f5476b0495470ca1fae47d6a3a3d0036287a8578201

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

            176KB

            MD5

            0e440b580b36f1d40e6220ed110aff59

            SHA1

            af52a48f92c6f25b818679da9d6a4a8daeb2f60a

            SHA256

            64f34b546160918660806c5156225b6e787c127613b4fb807c5c480fc647fa95

            SHA512

            0a30db3b6aea7d8bce1e7def7fa3a4cbde0e2bb806ef79f43f2d5fc54bf32385ab0683d2dfbd536e50cb4189dbe92d54ba47f6755747d2817ea2b6a72be6382d

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

            176KB

            MD5

            0e440b580b36f1d40e6220ed110aff59

            SHA1

            af52a48f92c6f25b818679da9d6a4a8daeb2f60a

            SHA256

            64f34b546160918660806c5156225b6e787c127613b4fb807c5c480fc647fa95

            SHA512

            0a30db3b6aea7d8bce1e7def7fa3a4cbde0e2bb806ef79f43f2d5fc54bf32385ab0683d2dfbd536e50cb4189dbe92d54ba47f6755747d2817ea2b6a72be6382d

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

            158KB

            MD5

            bc484acb363eaaedb4fbcb330565f183

            SHA1

            360f28d7293b779714183d621bfb48123842155a

            SHA256

            b971c593df06253fbdeb5115bbf8239528ab5d8c0367f67ea1fa5036ea97735a

            SHA512

            7ec58244a4584ebbf17afe1ca02eb36d96dccb4bccea5fb3b75951f43c2472635659e7d35876d7200a24ecedab96618c2b1fff958a9eec109c346586a987a5cc

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

            158KB

            MD5

            bc484acb363eaaedb4fbcb330565f183

            SHA1

            360f28d7293b779714183d621bfb48123842155a

            SHA256

            b971c593df06253fbdeb5115bbf8239528ab5d8c0367f67ea1fa5036ea97735a

            SHA512

            7ec58244a4584ebbf17afe1ca02eb36d96dccb4bccea5fb3b75951f43c2472635659e7d35876d7200a24ecedab96618c2b1fff958a9eec109c346586a987a5cc

          • \Users\Admin\AppData\Local\Temp\nstE987.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstE987.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE987.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE987.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE987.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            d6cff7f5fa1ee4d0246ea78033ee5ed5

            SHA1

            ad719d4cd9e1777c61c67f2c7dac033fcf253bd5

            SHA256

            f1de79860a75546a01554bb4d06b677cf5b6656b14864eb4192bbc740c6b2cdf

            SHA512

            743be51e34204a17a391df3a092b335a5054a170807f1bd2f8dad614ca9a761b943ffcd516e21021e14d87cd8ff9139e0671fa894840ca25dfd4d253d329832c

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            d6cff7f5fa1ee4d0246ea78033ee5ed5

            SHA1

            ad719d4cd9e1777c61c67f2c7dac033fcf253bd5

            SHA256

            f1de79860a75546a01554bb4d06b677cf5b6656b14864eb4192bbc740c6b2cdf

            SHA512

            743be51e34204a17a391df3a092b335a5054a170807f1bd2f8dad614ca9a761b943ffcd516e21021e14d87cd8ff9139e0671fa894840ca25dfd4d253d329832c

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            d6cff7f5fa1ee4d0246ea78033ee5ed5

            SHA1

            ad719d4cd9e1777c61c67f2c7dac033fcf253bd5

            SHA256

            f1de79860a75546a01554bb4d06b677cf5b6656b14864eb4192bbc740c6b2cdf

            SHA512

            743be51e34204a17a391df3a092b335a5054a170807f1bd2f8dad614ca9a761b943ffcd516e21021e14d87cd8ff9139e0671fa894840ca25dfd4d253d329832c

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            24efffb9a82312cce0ac46fa3071532b

            SHA1

            d48481329986dd591a89e64e2cbd370f5e9c0d19

            SHA256

            2175c2d45b6f50406691f014a4dfac52642c460e5f0d463dea78e366337f9149

            SHA512

            c6ca0cbfd054826606e513b6d67918f9dc141b0152b916c0c711d47c0ba2ccece3a4bead32f6ff081ff32db6d1d34df482f21a509a8fb673b770f4b768e3048e

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            24efffb9a82312cce0ac46fa3071532b

            SHA1

            d48481329986dd591a89e64e2cbd370f5e9c0d19

            SHA256

            2175c2d45b6f50406691f014a4dfac52642c460e5f0d463dea78e366337f9149

            SHA512

            c6ca0cbfd054826606e513b6d67918f9dc141b0152b916c0c711d47c0ba2ccece3a4bead32f6ff081ff32db6d1d34df482f21a509a8fb673b770f4b768e3048e

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            7e2198dc26d52ef543257625b70a09c9

            SHA1

            add1a4d5b8639b60650d8a06d42df0b5f54fe57e

            SHA256

            7a1f86939ecf61fcdf38b280773b340b4daf12df563721308fa136748172bde3

            SHA512

            bf0d8e02b795c697cc262d4950a773323f495ae602ca821ebdbd9a824d97cf39889eb8a2447e8e6b97ce4f5476b0495470ca1fae47d6a3a3d0036287a8578201

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            0e440b580b36f1d40e6220ed110aff59

            SHA1

            af52a48f92c6f25b818679da9d6a4a8daeb2f60a

            SHA256

            64f34b546160918660806c5156225b6e787c127613b4fb807c5c480fc647fa95

            SHA512

            0a30db3b6aea7d8bce1e7def7fa3a4cbde0e2bb806ef79f43f2d5fc54bf32385ab0683d2dfbd536e50cb4189dbe92d54ba47f6755747d2817ea2b6a72be6382d

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            bc484acb363eaaedb4fbcb330565f183

            SHA1

            360f28d7293b779714183d621bfb48123842155a

            SHA256

            b971c593df06253fbdeb5115bbf8239528ab5d8c0367f67ea1fa5036ea97735a

            SHA512

            7ec58244a4584ebbf17afe1ca02eb36d96dccb4bccea5fb3b75951f43c2472635659e7d35876d7200a24ecedab96618c2b1fff958a9eec109c346586a987a5cc

          • memory/272-80-0x0000000000000000-mapping.dmp
          • memory/552-70-0x0000000000000000-mapping.dmp
          • memory/584-59-0x0000000000000000-mapping.dmp
          • memory/620-87-0x0000000000000000-mapping.dmp
          • memory/684-58-0x0000000000000000-mapping.dmp
          • memory/772-76-0x0000000000000000-mapping.dmp
          • memory/788-61-0x0000000000000000-mapping.dmp
          • memory/1280-81-0x0000000000000000-mapping.dmp
          • memory/1292-62-0x0000000000000000-mapping.dmp
          • memory/1296-64-0x0000000000000000-mapping.dmp
          • memory/1352-86-0x0000000000000000-mapping.dmp
          • memory/1656-54-0x0000000075F61000-0x0000000075F63000-memory.dmp
            Filesize

            8KB

          • memory/1656-57-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1656-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB