Analysis

  • max time kernel
    32s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:17

General

  • Target

    a35a45f476c35ce08787d418dac2652e1996e572a1857a0903158c4eef81aacc.exe

  • Size

    601KB

  • MD5

    ad884eb428afb63705ad54103797d72f

  • SHA1

    a8224321c116610cc5845f26131057fb54cbcd49

  • SHA256

    a35a45f476c35ce08787d418dac2652e1996e572a1857a0903158c4eef81aacc

  • SHA512

    d7ca26a710a8717736268c5788b97ebccc507dc4edb1744e83f5a30e18dca8412ae1f2a0f2185d45245163705e04964051e99ebb61d819fd116367e591ce378e

  • SSDEEP

    12288:zIny5DYT4Es6a3vYbq5uSTRMxnzB5IAIxMhAAskE9KOZqmu/P+WPzzxu6h:bUT4Ena3guQSFM1IDaTwZqp+k

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\a35a45f476c35ce08787d418dac2652e1996e572a1857a0903158c4eef81aacc.exe
    "C:\Users\Admin\AppData\Local\Temp\a35a45f476c35ce08787d418dac2652e1996e572a1857a0903158c4eef81aacc.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:1940
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:960
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:832
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1372
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1140
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1088
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1180
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1828
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1528
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1808
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1908
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:544
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1044
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1184

          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

            661ec8e6596ae2ae6468ea5ee3c398b3

            SHA1

            7cbd72f5665af8aa744c972c15e96816b49b2bbf

            SHA256

            08a4aedf1edd068b24df34e598c30023dbc0d2cab5febdcc4752cc154ac24840

            SHA512

            ae149a26b563672fafdbd222924ead6b53931b21882cf915f8caaeda9ef39c3f93bf0fa5df0335a339f7e37162c12752d945dcd059c398a62539bb1b622d2c67

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

            241KB

            MD5

            25bfdb84225719b698450ea41b1bd846

            SHA1

            3f30965e153e50792deca0b2366cb0642d78c0bb

            SHA256

            a4ecb7c42c1b179b3c235b31b5ca97589b359fdcb3d3bd87227fc81c9748a3e1

            SHA512

            f31afb29804684da1cc6938897e83e30dda59270d2ae80ba2c5d4f8eec187c498bd67d0d9c33cb012a11d3e6512c3369122a248e9e2ce143fa87d418e05760c8

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

            108KB

            MD5

            f87faf9d502c481f3f11c2d1dee19edf

            SHA1

            55602c1f4e89f0ae7f0781b1a3d425f7a2f2abf4

            SHA256

            a94e003c593fb26f92c7d3deda23b4a0192dda77b43a773656c7744a0aaa5e87

            SHA512

            580d9f15907935dbab818d86fa9a9381aa4c347db95fa54e867e2349b84decaceb0f4f33eae3280c44418e5c0eaefd6db0dda152feea79a4fb90ea795dfd8e1f

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

            176KB

            MD5

            15a7ca649bdcb9d900f2efab9a6124a8

            SHA1

            1189fbfeb783fc35a3cebe02f0669f19cbdf78c9

            SHA256

            4e6d3f2eb8946b42dbf5e74e2dbd05c63b86a318bac9a842c2238a71e7ca2481

            SHA512

            e5dff0d403d7c8d3def446d0f27f3d10ce9a4e3b0237a38066e9d385df05bc0c9996e089221c4e2a5b71e644ae99dedd1d8b82098e0def50333bd5f1a2378cfe

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

            176KB

            MD5

            15a7ca649bdcb9d900f2efab9a6124a8

            SHA1

            1189fbfeb783fc35a3cebe02f0669f19cbdf78c9

            SHA256

            4e6d3f2eb8946b42dbf5e74e2dbd05c63b86a318bac9a842c2238a71e7ca2481

            SHA512

            e5dff0d403d7c8d3def446d0f27f3d10ce9a4e3b0237a38066e9d385df05bc0c9996e089221c4e2a5b71e644ae99dedd1d8b82098e0def50333bd5f1a2378cfe

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

            158KB

            MD5

            2d79f8c0ab0148597e7dbde6a8f351e0

            SHA1

            20561bb8417dc8792d73aa8bb1747edca27bf300

            SHA256

            c649c448606a72bcf787a852f6fb6aa6112d02c8ff0cfefb930c0d1468cd8285

            SHA512

            2f4f4e40ce58001d7cfb5c861601b0e43a46ab7d8396c406976c41c615e94048a93fed0e81e47bb9849cdae8f803a507a4a59fcbf084db3b3dbfa096ce42182c

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

            158KB

            MD5

            2d79f8c0ab0148597e7dbde6a8f351e0

            SHA1

            20561bb8417dc8792d73aa8bb1747edca27bf300

            SHA256

            c649c448606a72bcf787a852f6fb6aa6112d02c8ff0cfefb930c0d1468cd8285

            SHA512

            2f4f4e40ce58001d7cfb5c861601b0e43a46ab7d8396c406976c41c615e94048a93fed0e81e47bb9849cdae8f803a507a4a59fcbf084db3b3dbfa096ce42182c

          • \Users\Admin\AppData\Local\Temp\nsd564D.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd564D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd564D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd564D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd564D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            661ec8e6596ae2ae6468ea5ee3c398b3

            SHA1

            7cbd72f5665af8aa744c972c15e96816b49b2bbf

            SHA256

            08a4aedf1edd068b24df34e598c30023dbc0d2cab5febdcc4752cc154ac24840

            SHA512

            ae149a26b563672fafdbd222924ead6b53931b21882cf915f8caaeda9ef39c3f93bf0fa5df0335a339f7e37162c12752d945dcd059c398a62539bb1b622d2c67

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            661ec8e6596ae2ae6468ea5ee3c398b3

            SHA1

            7cbd72f5665af8aa744c972c15e96816b49b2bbf

            SHA256

            08a4aedf1edd068b24df34e598c30023dbc0d2cab5febdcc4752cc154ac24840

            SHA512

            ae149a26b563672fafdbd222924ead6b53931b21882cf915f8caaeda9ef39c3f93bf0fa5df0335a339f7e37162c12752d945dcd059c398a62539bb1b622d2c67

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            661ec8e6596ae2ae6468ea5ee3c398b3

            SHA1

            7cbd72f5665af8aa744c972c15e96816b49b2bbf

            SHA256

            08a4aedf1edd068b24df34e598c30023dbc0d2cab5febdcc4752cc154ac24840

            SHA512

            ae149a26b563672fafdbd222924ead6b53931b21882cf915f8caaeda9ef39c3f93bf0fa5df0335a339f7e37162c12752d945dcd059c398a62539bb1b622d2c67

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            25bfdb84225719b698450ea41b1bd846

            SHA1

            3f30965e153e50792deca0b2366cb0642d78c0bb

            SHA256

            a4ecb7c42c1b179b3c235b31b5ca97589b359fdcb3d3bd87227fc81c9748a3e1

            SHA512

            f31afb29804684da1cc6938897e83e30dda59270d2ae80ba2c5d4f8eec187c498bd67d0d9c33cb012a11d3e6512c3369122a248e9e2ce143fa87d418e05760c8

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            25bfdb84225719b698450ea41b1bd846

            SHA1

            3f30965e153e50792deca0b2366cb0642d78c0bb

            SHA256

            a4ecb7c42c1b179b3c235b31b5ca97589b359fdcb3d3bd87227fc81c9748a3e1

            SHA512

            f31afb29804684da1cc6938897e83e30dda59270d2ae80ba2c5d4f8eec187c498bd67d0d9c33cb012a11d3e6512c3369122a248e9e2ce143fa87d418e05760c8

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            f87faf9d502c481f3f11c2d1dee19edf

            SHA1

            55602c1f4e89f0ae7f0781b1a3d425f7a2f2abf4

            SHA256

            a94e003c593fb26f92c7d3deda23b4a0192dda77b43a773656c7744a0aaa5e87

            SHA512

            580d9f15907935dbab818d86fa9a9381aa4c347db95fa54e867e2349b84decaceb0f4f33eae3280c44418e5c0eaefd6db0dda152feea79a4fb90ea795dfd8e1f

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            15a7ca649bdcb9d900f2efab9a6124a8

            SHA1

            1189fbfeb783fc35a3cebe02f0669f19cbdf78c9

            SHA256

            4e6d3f2eb8946b42dbf5e74e2dbd05c63b86a318bac9a842c2238a71e7ca2481

            SHA512

            e5dff0d403d7c8d3def446d0f27f3d10ce9a4e3b0237a38066e9d385df05bc0c9996e089221c4e2a5b71e644ae99dedd1d8b82098e0def50333bd5f1a2378cfe

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            2d79f8c0ab0148597e7dbde6a8f351e0

            SHA1

            20561bb8417dc8792d73aa8bb1747edca27bf300

            SHA256

            c649c448606a72bcf787a852f6fb6aa6112d02c8ff0cfefb930c0d1468cd8285

            SHA512

            2f4f4e40ce58001d7cfb5c861601b0e43a46ab7d8396c406976c41c615e94048a93fed0e81e47bb9849cdae8f803a507a4a59fcbf084db3b3dbfa096ce42182c

          • memory/544-88-0x0000000000000000-mapping.dmp
          • memory/832-60-0x0000000000000000-mapping.dmp
          • memory/960-58-0x0000000000000000-mapping.dmp
          • memory/1088-65-0x0000000000000000-mapping.dmp
          • memory/1140-63-0x0000000000000000-mapping.dmp
          • memory/1180-71-0x0000000000000000-mapping.dmp
          • memory/1372-62-0x0000000000000000-mapping.dmp
          • memory/1528-81-0x0000000000000000-mapping.dmp
          • memory/1808-82-0x0000000000000000-mapping.dmp
          • memory/1828-77-0x0000000000000000-mapping.dmp
          • memory/1908-87-0x0000000000000000-mapping.dmp
          • memory/1940-54-0x0000000075B41000-0x0000000075B43000-memory.dmp
            Filesize

            8KB

          • memory/1940-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1940-55-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1940-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB