Analysis

  • max time kernel
    41s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    a82ceac17ecd5723ab25eb7b8e3b6d540650c8ee8c00a97f9dea9735f8e0cdd6.exe

  • Size

    602KB

  • MD5

    346f708e7fd9747599ae8ff7362c7a24

  • SHA1

    3550bf4cf570da577b4cadf3c5e46c4f4aea97bc

  • SHA256

    a82ceac17ecd5723ab25eb7b8e3b6d540650c8ee8c00a97f9dea9735f8e0cdd6

  • SHA512

    100b24ca318a5fcff3b2644f17d348690603daf8c496903ce43d53c7d0b0111fe12e7ab9811f8ae49cc3fbc4e391d202807baca24d486e5f2bafde68dd857efc

  • SSDEEP

    12288:OIny5DYTcIxXIdEiKh3vKe4I4Wyj88kSDPVkNjRob85YVLZyO2DZ:QUTc2Rh37QWEPkiNORY85jOW

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\a82ceac17ecd5723ab25eb7b8e3b6d540650c8ee8c00a97f9dea9735f8e0cdd6.exe
    "C:\Users\Admin\AppData\Local\Temp\a82ceac17ecd5723ab25eb7b8e3b6d540650c8ee8c00a97f9dea9735f8e0cdd6.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:900
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1952
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1988
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1948
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1940
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:884
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1140
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1604
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1192
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:696
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2028
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1736
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1324

          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

            318b5335967d68dc09d5a3b28a65b404

            SHA1

            a72ac6df82acc0947485b7e2083363e07129d638

            SHA256

            08c22efd4340d8afd01c4f296df1d4585c1cd31774d7e730a4c06c0c763d3f98

            SHA512

            34e4888461a89af3cf1a9e5ff5651d026e30b94ef47931a2b50f64b919d3942e0b8f42e5382266a9e84d6b44ee07697454a344b03b44bbbe90078cc93073a1a5

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

            243KB

            MD5

            ea0294e132bf34d74330e0522f74c237

            SHA1

            828270c173effe515cf3b2085f20d1b2d1145224

            SHA256

            cddd889d55d784205ed3d7aa27e49b96da6edc4b9b78087b67c8ed65d4df74a4

            SHA512

            54644341de9e76566ba872224423d1fe1e613d3d1d133c07629d496f460ef5257ff61e13eeb3b0efbd5e710bffebcf55cb9424524d4ace7ce92b67f3d6facde7

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

            108KB

            MD5

            a65bbe1ff074ff2efdc7a490cae5e953

            SHA1

            137032d2ee73004794a808115e32e3096f560799

            SHA256

            6a0c7c8744b9db676e82fae08eed674236ca49e42604c21f30bbedaf933610a9

            SHA512

            f58726207890caad9eabfd904e0d07f65efccb3129983ee3362a90b0a396ec304b53ff8e2add1a29e69bef31de9a4b6dd8ed9731a80a36c7710c5bc10fb9a4a5

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

            176KB

            MD5

            3c1114be5bebf2189f10f40baaefeed4

            SHA1

            f4edb583bc409a017816edd9f2d48b5270e42f7b

            SHA256

            1e54fc459cbbc9b443700625f78a02f00a5ade30d6f8caa8c8ffb207f2b36317

            SHA512

            f9036f2d56653a21fb7b3afc381ad5b8c1be30c65c179901a60342fb39e7dd778156fe9b8afc0022a1d38c00f24a79a713cc3ab2ed18f0d5f3548a9ad65777e3

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

            176KB

            MD5

            3c1114be5bebf2189f10f40baaefeed4

            SHA1

            f4edb583bc409a017816edd9f2d48b5270e42f7b

            SHA256

            1e54fc459cbbc9b443700625f78a02f00a5ade30d6f8caa8c8ffb207f2b36317

            SHA512

            f9036f2d56653a21fb7b3afc381ad5b8c1be30c65c179901a60342fb39e7dd778156fe9b8afc0022a1d38c00f24a79a713cc3ab2ed18f0d5f3548a9ad65777e3

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

            158KB

            MD5

            54e881d8898f1e4e2367af07581e978f

            SHA1

            44f3f5f6fcfd820e53dcd31868ea09db165e8589

            SHA256

            36bc2c8d5710c764216092689316f4903e2f23acdeec080fe1d6c99408079267

            SHA512

            ca197fba352dd33cb6e7c1b4d01023f8708649eb5ebe032e6401fbdf8195c8ff39714a34a5a1814e8a268f187c77e9313056f57c2643de658edad57250c8a6a6

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

            158KB

            MD5

            54e881d8898f1e4e2367af07581e978f

            SHA1

            44f3f5f6fcfd820e53dcd31868ea09db165e8589

            SHA256

            36bc2c8d5710c764216092689316f4903e2f23acdeec080fe1d6c99408079267

            SHA512

            ca197fba352dd33cb6e7c1b4d01023f8708649eb5ebe032e6401fbdf8195c8ff39714a34a5a1814e8a268f187c77e9313056f57c2643de658edad57250c8a6a6

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            318b5335967d68dc09d5a3b28a65b404

            SHA1

            a72ac6df82acc0947485b7e2083363e07129d638

            SHA256

            08c22efd4340d8afd01c4f296df1d4585c1cd31774d7e730a4c06c0c763d3f98

            SHA512

            34e4888461a89af3cf1a9e5ff5651d026e30b94ef47931a2b50f64b919d3942e0b8f42e5382266a9e84d6b44ee07697454a344b03b44bbbe90078cc93073a1a5

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            318b5335967d68dc09d5a3b28a65b404

            SHA1

            a72ac6df82acc0947485b7e2083363e07129d638

            SHA256

            08c22efd4340d8afd01c4f296df1d4585c1cd31774d7e730a4c06c0c763d3f98

            SHA512

            34e4888461a89af3cf1a9e5ff5651d026e30b94ef47931a2b50f64b919d3942e0b8f42e5382266a9e84d6b44ee07697454a344b03b44bbbe90078cc93073a1a5

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            318b5335967d68dc09d5a3b28a65b404

            SHA1

            a72ac6df82acc0947485b7e2083363e07129d638

            SHA256

            08c22efd4340d8afd01c4f296df1d4585c1cd31774d7e730a4c06c0c763d3f98

            SHA512

            34e4888461a89af3cf1a9e5ff5651d026e30b94ef47931a2b50f64b919d3942e0b8f42e5382266a9e84d6b44ee07697454a344b03b44bbbe90078cc93073a1a5

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            243KB

            MD5

            ea0294e132bf34d74330e0522f74c237

            SHA1

            828270c173effe515cf3b2085f20d1b2d1145224

            SHA256

            cddd889d55d784205ed3d7aa27e49b96da6edc4b9b78087b67c8ed65d4df74a4

            SHA512

            54644341de9e76566ba872224423d1fe1e613d3d1d133c07629d496f460ef5257ff61e13eeb3b0efbd5e710bffebcf55cb9424524d4ace7ce92b67f3d6facde7

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            243KB

            MD5

            ea0294e132bf34d74330e0522f74c237

            SHA1

            828270c173effe515cf3b2085f20d1b2d1145224

            SHA256

            cddd889d55d784205ed3d7aa27e49b96da6edc4b9b78087b67c8ed65d4df74a4

            SHA512

            54644341de9e76566ba872224423d1fe1e613d3d1d133c07629d496f460ef5257ff61e13eeb3b0efbd5e710bffebcf55cb9424524d4ace7ce92b67f3d6facde7

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            a65bbe1ff074ff2efdc7a490cae5e953

            SHA1

            137032d2ee73004794a808115e32e3096f560799

            SHA256

            6a0c7c8744b9db676e82fae08eed674236ca49e42604c21f30bbedaf933610a9

            SHA512

            f58726207890caad9eabfd904e0d07f65efccb3129983ee3362a90b0a396ec304b53ff8e2add1a29e69bef31de9a4b6dd8ed9731a80a36c7710c5bc10fb9a4a5

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            3c1114be5bebf2189f10f40baaefeed4

            SHA1

            f4edb583bc409a017816edd9f2d48b5270e42f7b

            SHA256

            1e54fc459cbbc9b443700625f78a02f00a5ade30d6f8caa8c8ffb207f2b36317

            SHA512

            f9036f2d56653a21fb7b3afc381ad5b8c1be30c65c179901a60342fb39e7dd778156fe9b8afc0022a1d38c00f24a79a713cc3ab2ed18f0d5f3548a9ad65777e3

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            54e881d8898f1e4e2367af07581e978f

            SHA1

            44f3f5f6fcfd820e53dcd31868ea09db165e8589

            SHA256

            36bc2c8d5710c764216092689316f4903e2f23acdeec080fe1d6c99408079267

            SHA512

            ca197fba352dd33cb6e7c1b4d01023f8708649eb5ebe032e6401fbdf8195c8ff39714a34a5a1814e8a268f187c77e9313056f57c2643de658edad57250c8a6a6

          • memory/696-86-0x0000000000000000-mapping.dmp
          • memory/884-70-0x0000000000000000-mapping.dmp
          • memory/900-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/900-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/900-54-0x0000000076121000-0x0000000076123000-memory.dmp
            Filesize

            8KB

          • memory/1140-76-0x0000000000000000-mapping.dmp
          • memory/1192-81-0x0000000000000000-mapping.dmp
          • memory/1604-80-0x0000000000000000-mapping.dmp
          • memory/1940-64-0x0000000000000000-mapping.dmp
          • memory/1948-62-0x0000000000000000-mapping.dmp
          • memory/1952-58-0x0000000000000000-mapping.dmp
          • memory/1988-61-0x0000000000000000-mapping.dmp
          • memory/1992-57-0x0000000000000000-mapping.dmp
          • memory/2028-87-0x0000000000000000-mapping.dmp