Analysis

  • max time kernel
    36s
  • 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 10:26

General

  • Target

    5346e120959cfea5e35ab574707f7344cbbe2fdc77e815c1a1340b3471b37479.exe

  • Size

    602KB

  • MD5

    a3041c77572ea99068a4a62b851d5b74

  • SHA1

    4e0e0d0ae18180c90e998b9906bc42c7f4b57704

  • SHA256

    5346e120959cfea5e35ab574707f7344cbbe2fdc77e815c1a1340b3471b37479

  • SHA512

    921dcdbdc10f798e7547d723101011fae431521985a516c8dd80b269be815acb524f8d7c836a4767b3693348ac2c70e28f82441e16e67b69c72d0927c58b4ada

  • SSDEEP

    12288:GIny5DYTsY6+jjilajQZLj4603/k4nRSvvil2RlclAiAO3bxz:oUTxRaiKP460Pk4RSblcdf5

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\5346e120959cfea5e35ab574707f7344cbbe2fdc77e815c1a1340b3471b37479.exe
    "C:\Users\Admin\AppData\Local\Temp\5346e120959cfea5e35ab574707f7344cbbe2fdc77e815c1a1340b3471b37479.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:1492
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1124
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1340
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1120
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1976
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1676
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1912
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1536
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1392
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:932
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:472
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1948
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1972

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e9579c9a7925f25bc44f74273b1131da

            SHA1

            3fc06d6305da563261e2ff6dd24b5e40b6c94293

            SHA256

            418a6975f43bdffc0f21745b96de7d8a7e4ffe06c50ef6808ce22ed213f228bf

            SHA512

            806d98d2814eb1d28bac6f57e5f30873394651957d7cdc72af39bfff7b8b9a433b5c920585e2f26c0bb410db1417d6d86c814552fa53508d3cfc357b8b3046a5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1a5a6a76796a1826b730f8058dae5606

            SHA1

            f020947cde5c2cf85ac1667b7e55ac02fa95a233

            SHA256

            703d734994deeb151c14815183e141fc5c7280448562b4bb49cc4fcafaa6be1c

            SHA512

            6068d9effcbe7d016d65d806bea9ba1c9bc5e73b2e337783624735961bf73d9c31c0d4e84c3214e1243e0ce9f74536f1c53a36a0a362ed3356a6fc7d3b9b069d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            1eb5f881d849b63445a50a01d5f2c919

            SHA1

            0478f64f804715e8a512dbef04a14dd2ae8eaafe

            SHA256

            e8592f7c1ed482f0557003de3c6f0b12758a0d416e20c34451f1701bac9b3cad

            SHA512

            5655d0fd90e38220bd7e6caf065b58fa89cebe91f7617c865f379a310703eed0f3f44e2e15a2a1aae84ef509cc59bc2a0c4b56c27d5e079e46534859395b35a1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e31b2f24b456824bacbf235c550a7018

            SHA1

            8cb6bafa50fd4ab45eeaa7fdbb3e054e1b2a78e0

            SHA256

            b1c5c5f53859c7984d451ff1522f1dd902be0c63423c5b32cb81998afb414ea8

            SHA512

            a66bac0ac9525034e1408b30ee6077cec45a6dbb8113d42ba339e40199069483bd20ab8f0bcc69679c84f8240a3e72d27bd383b4167c6f36f21076a901d48969

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e31b2f24b456824bacbf235c550a7018

            SHA1

            8cb6bafa50fd4ab45eeaa7fdbb3e054e1b2a78e0

            SHA256

            b1c5c5f53859c7984d451ff1522f1dd902be0c63423c5b32cb81998afb414ea8

            SHA512

            a66bac0ac9525034e1408b30ee6077cec45a6dbb8113d42ba339e40199069483bd20ab8f0bcc69679c84f8240a3e72d27bd383b4167c6f36f21076a901d48969

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6c61ad00aeb01eb61b39617656788058

            SHA1

            aea9c7e8ea7a311662907a9445b826258632bd81

            SHA256

            caec4d1ce4f224589d30b9fe6d37a0377a4919c679f4ba3ef003c479044567c0

            SHA512

            9517bdc5584b6a4f77699854780a99f1309911d4b94d226cabe7baa9799824e0505797ca935b7fe9bab33bec659f11faa90d91290af38aa4916f56595c358e29

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6c61ad00aeb01eb61b39617656788058

            SHA1

            aea9c7e8ea7a311662907a9445b826258632bd81

            SHA256

            caec4d1ce4f224589d30b9fe6d37a0377a4919c679f4ba3ef003c479044567c0

            SHA512

            9517bdc5584b6a4f77699854780a99f1309911d4b94d226cabe7baa9799824e0505797ca935b7fe9bab33bec659f11faa90d91290af38aa4916f56595c358e29

          • \Users\Admin\AppData\Local\Temp\nsjF7E9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjF7E9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjF7E9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjF7E9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjF7E9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e9579c9a7925f25bc44f74273b1131da

            SHA1

            3fc06d6305da563261e2ff6dd24b5e40b6c94293

            SHA256

            418a6975f43bdffc0f21745b96de7d8a7e4ffe06c50ef6808ce22ed213f228bf

            SHA512

            806d98d2814eb1d28bac6f57e5f30873394651957d7cdc72af39bfff7b8b9a433b5c920585e2f26c0bb410db1417d6d86c814552fa53508d3cfc357b8b3046a5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e9579c9a7925f25bc44f74273b1131da

            SHA1

            3fc06d6305da563261e2ff6dd24b5e40b6c94293

            SHA256

            418a6975f43bdffc0f21745b96de7d8a7e4ffe06c50ef6808ce22ed213f228bf

            SHA512

            806d98d2814eb1d28bac6f57e5f30873394651957d7cdc72af39bfff7b8b9a433b5c920585e2f26c0bb410db1417d6d86c814552fa53508d3cfc357b8b3046a5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e9579c9a7925f25bc44f74273b1131da

            SHA1

            3fc06d6305da563261e2ff6dd24b5e40b6c94293

            SHA256

            418a6975f43bdffc0f21745b96de7d8a7e4ffe06c50ef6808ce22ed213f228bf

            SHA512

            806d98d2814eb1d28bac6f57e5f30873394651957d7cdc72af39bfff7b8b9a433b5c920585e2f26c0bb410db1417d6d86c814552fa53508d3cfc357b8b3046a5

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1a5a6a76796a1826b730f8058dae5606

            SHA1

            f020947cde5c2cf85ac1667b7e55ac02fa95a233

            SHA256

            703d734994deeb151c14815183e141fc5c7280448562b4bb49cc4fcafaa6be1c

            SHA512

            6068d9effcbe7d016d65d806bea9ba1c9bc5e73b2e337783624735961bf73d9c31c0d4e84c3214e1243e0ce9f74536f1c53a36a0a362ed3356a6fc7d3b9b069d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1a5a6a76796a1826b730f8058dae5606

            SHA1

            f020947cde5c2cf85ac1667b7e55ac02fa95a233

            SHA256

            703d734994deeb151c14815183e141fc5c7280448562b4bb49cc4fcafaa6be1c

            SHA512

            6068d9effcbe7d016d65d806bea9ba1c9bc5e73b2e337783624735961bf73d9c31c0d4e84c3214e1243e0ce9f74536f1c53a36a0a362ed3356a6fc7d3b9b069d

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            1eb5f881d849b63445a50a01d5f2c919

            SHA1

            0478f64f804715e8a512dbef04a14dd2ae8eaafe

            SHA256

            e8592f7c1ed482f0557003de3c6f0b12758a0d416e20c34451f1701bac9b3cad

            SHA512

            5655d0fd90e38220bd7e6caf065b58fa89cebe91f7617c865f379a310703eed0f3f44e2e15a2a1aae84ef509cc59bc2a0c4b56c27d5e079e46534859395b35a1

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e31b2f24b456824bacbf235c550a7018

            SHA1

            8cb6bafa50fd4ab45eeaa7fdbb3e054e1b2a78e0

            SHA256

            b1c5c5f53859c7984d451ff1522f1dd902be0c63423c5b32cb81998afb414ea8

            SHA512

            a66bac0ac9525034e1408b30ee6077cec45a6dbb8113d42ba339e40199069483bd20ab8f0bcc69679c84f8240a3e72d27bd383b4167c6f36f21076a901d48969

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6c61ad00aeb01eb61b39617656788058

            SHA1

            aea9c7e8ea7a311662907a9445b826258632bd81

            SHA256

            caec4d1ce4f224589d30b9fe6d37a0377a4919c679f4ba3ef003c479044567c0

            SHA512

            9517bdc5584b6a4f77699854780a99f1309911d4b94d226cabe7baa9799824e0505797ca935b7fe9bab33bec659f11faa90d91290af38aa4916f56595c358e29

          • memory/472-87-0x0000000000000000-mapping.dmp

          • memory/932-86-0x0000000000000000-mapping.dmp

          • memory/1120-61-0x0000000000000000-mapping.dmp

          • memory/1124-58-0x0000000000000000-mapping.dmp

          • memory/1340-60-0x0000000000000000-mapping.dmp

          • memory/1392-81-0x0000000000000000-mapping.dmp

          • memory/1464-57-0x0000000000000000-mapping.dmp

          • memory/1492-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1492-54-0x0000000075B41000-0x0000000075B43000-memory.dmp

            Filesize

            8KB

          • memory/1492-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1536-80-0x0000000000000000-mapping.dmp

          • memory/1676-70-0x0000000000000000-mapping.dmp

          • memory/1912-76-0x0000000000000000-mapping.dmp

          • memory/1976-64-0x0000000000000000-mapping.dmp