Analysis

  • max time kernel
    187s
  • max time network
    210s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 05:36

General

  • Target

    a8ea8c969b37a27ecb605ba648bc804d6d8fdde0829e13a014902d16b8a45ac8.exe

  • Size

    603KB

  • MD5

    8a7ad3f3ba4bf27bba47b8f824662f11

  • SHA1

    31f3f00a17c0399096714155258f5788b16c3088

  • SHA256

    a8ea8c969b37a27ecb605ba648bc804d6d8fdde0829e13a014902d16b8a45ac8

  • SHA512

    59b2707567bf2f9c401a66fbeadc432849809a06cef31907762cc87cadd6caa39c7beefee7b4ab730625b226948bab63b6dd6695b6ff2d5a5ef3ed57cb31c500

  • SSDEEP

    12288:CIny5DYT92UdH3q3ijEZbqSyXwdH/QZCCCllj9t48p:kUT92MH3q3igg5XwdHIZkj48

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8ea8c969b37a27ecb605ba648bc804d6d8fdde0829e13a014902d16b8a45ac8.exe
    "C:\Users\Admin\AppData\Local\Temp\a8ea8c969b37a27ecb605ba648bc804d6d8fdde0829e13a014902d16b8a45ac8.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:2876
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5000
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:364
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3112
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2796
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4616
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1840
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4784
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:5060
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1440
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3132
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4648
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:1368
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3588

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nse28E2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a75a6b2f248c21c1c344a9a43fe4a03c

            SHA1

            c0360eb71873f6fe7fed859888a34d292835fb1d

            SHA256

            545edeb0447aeea5f27e48e1f92d602db2ff6d6c1148fa2328e5286819aec3fd

            SHA512

            35f48ba82a3706fdf42c72f517a5bc51eba5c224f88fab53667d0fe9f6ee101099bf5048b4fa04d677fc4ff9ac2d963588f4417770daf933859e767779d53476

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a75a6b2f248c21c1c344a9a43fe4a03c

            SHA1

            c0360eb71873f6fe7fed859888a34d292835fb1d

            SHA256

            545edeb0447aeea5f27e48e1f92d602db2ff6d6c1148fa2328e5286819aec3fd

            SHA512

            35f48ba82a3706fdf42c72f517a5bc51eba5c224f88fab53667d0fe9f6ee101099bf5048b4fa04d677fc4ff9ac2d963588f4417770daf933859e767779d53476

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a75a6b2f248c21c1c344a9a43fe4a03c

            SHA1

            c0360eb71873f6fe7fed859888a34d292835fb1d

            SHA256

            545edeb0447aeea5f27e48e1f92d602db2ff6d6c1148fa2328e5286819aec3fd

            SHA512

            35f48ba82a3706fdf42c72f517a5bc51eba5c224f88fab53667d0fe9f6ee101099bf5048b4fa04d677fc4ff9ac2d963588f4417770daf933859e767779d53476

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a75a6b2f248c21c1c344a9a43fe4a03c

            SHA1

            c0360eb71873f6fe7fed859888a34d292835fb1d

            SHA256

            545edeb0447aeea5f27e48e1f92d602db2ff6d6c1148fa2328e5286819aec3fd

            SHA512

            35f48ba82a3706fdf42c72f517a5bc51eba5c224f88fab53667d0fe9f6ee101099bf5048b4fa04d677fc4ff9ac2d963588f4417770daf933859e767779d53476

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            448762cc736edc7ef17337b408038e14

            SHA1

            c63164e53d2ee32b774a671187a6200fd8ef8159

            SHA256

            9aebd6c70de162b35e9b2e8efbaefddae448e41d5715e031910457a660268a3f

            SHA512

            9323e54c9aaf227a04d6bbd8ec56a41d898131c583434f98d0dc71f22f28d9a4396a65c18e98c8d85bd1676fd7d73fb3ed8dc82899d1b1112bccec85b232fe38

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            448762cc736edc7ef17337b408038e14

            SHA1

            c63164e53d2ee32b774a671187a6200fd8ef8159

            SHA256

            9aebd6c70de162b35e9b2e8efbaefddae448e41d5715e031910457a660268a3f

            SHA512

            9323e54c9aaf227a04d6bbd8ec56a41d898131c583434f98d0dc71f22f28d9a4396a65c18e98c8d85bd1676fd7d73fb3ed8dc82899d1b1112bccec85b232fe38

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            448762cc736edc7ef17337b408038e14

            SHA1

            c63164e53d2ee32b774a671187a6200fd8ef8159

            SHA256

            9aebd6c70de162b35e9b2e8efbaefddae448e41d5715e031910457a660268a3f

            SHA512

            9323e54c9aaf227a04d6bbd8ec56a41d898131c583434f98d0dc71f22f28d9a4396a65c18e98c8d85bd1676fd7d73fb3ed8dc82899d1b1112bccec85b232fe38

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            74c8a6101e9b7ccda7c873a3a5f0081c

            SHA1

            92040097089192871de3e2ca6a763dbba17c2dbe

            SHA256

            e442db59ef301f8467f7713a09881e4c5beac95b2899cef6e118e32727f1a128

            SHA512

            5883405652e310d25031e077d9e5e8d9d9d8a7caef71abc11ad1810f47648cf91468e2877ef8a66437eb1ddb55512f837431e769081cf0a35649749f977704fc

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            74c8a6101e9b7ccda7c873a3a5f0081c

            SHA1

            92040097089192871de3e2ca6a763dbba17c2dbe

            SHA256

            e442db59ef301f8467f7713a09881e4c5beac95b2899cef6e118e32727f1a128

            SHA512

            5883405652e310d25031e077d9e5e8d9d9d8a7caef71abc11ad1810f47648cf91468e2877ef8a66437eb1ddb55512f837431e769081cf0a35649749f977704fc

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0b4e84050385d56b1961b926995e06d7

            SHA1

            b08adaa03f012aebe2a1b58679daee86dce6bfa6

            SHA256

            35c035f195cf5a4d43b898d7c57628a4e61d0fc29eda1b76db24f95afd40ff6c

            SHA512

            d0730b44fe40510c30f0f331f82c96e2d965635d3a16428a32a9cbabb7f73219a6972abe5bc355228f66e594d8c85d91e80d6a1b4ba7f2f33b79b0497c51e652

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0b4e84050385d56b1961b926995e06d7

            SHA1

            b08adaa03f012aebe2a1b58679daee86dce6bfa6

            SHA256

            35c035f195cf5a4d43b898d7c57628a4e61d0fc29eda1b76db24f95afd40ff6c

            SHA512

            d0730b44fe40510c30f0f331f82c96e2d965635d3a16428a32a9cbabb7f73219a6972abe5bc355228f66e594d8c85d91e80d6a1b4ba7f2f33b79b0497c51e652

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0b4e84050385d56b1961b926995e06d7

            SHA1

            b08adaa03f012aebe2a1b58679daee86dce6bfa6

            SHA256

            35c035f195cf5a4d43b898d7c57628a4e61d0fc29eda1b76db24f95afd40ff6c

            SHA512

            d0730b44fe40510c30f0f331f82c96e2d965635d3a16428a32a9cbabb7f73219a6972abe5bc355228f66e594d8c85d91e80d6a1b4ba7f2f33b79b0497c51e652

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9f89f8700b9e4154a8de0d1705b46b8e

            SHA1

            331f8a04fa68abb5b9c208649d094c95524992d7

            SHA256

            d889fcac88dd7e2a3a7c531c2d92b61e9b6deb8c99d3121c7a15497d96c0408f

            SHA512

            cd830d609053fd2926d044f64f9dbfa2867efc668a91becc8f3a4a3caa6fbf8e35cb679e3ad821b67257fcffcee54cc1b652cac87d5fe6d50f860f8522f61e09

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9f89f8700b9e4154a8de0d1705b46b8e

            SHA1

            331f8a04fa68abb5b9c208649d094c95524992d7

            SHA256

            d889fcac88dd7e2a3a7c531c2d92b61e9b6deb8c99d3121c7a15497d96c0408f

            SHA512

            cd830d609053fd2926d044f64f9dbfa2867efc668a91becc8f3a4a3caa6fbf8e35cb679e3ad821b67257fcffcee54cc1b652cac87d5fe6d50f860f8522f61e09

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9f89f8700b9e4154a8de0d1705b46b8e

            SHA1

            331f8a04fa68abb5b9c208649d094c95524992d7

            SHA256

            d889fcac88dd7e2a3a7c531c2d92b61e9b6deb8c99d3121c7a15497d96c0408f

            SHA512

            cd830d609053fd2926d044f64f9dbfa2867efc668a91becc8f3a4a3caa6fbf8e35cb679e3ad821b67257fcffcee54cc1b652cac87d5fe6d50f860f8522f61e09

          • memory/2876-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2876-138-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2876-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB