Analysis

  • max time kernel
    59s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:18

General

  • Target

    99177f19eb195ecdb6233b073fa44622c088cf45e8c1e5278d57499d3a931e79.exe

  • Size

    602KB

  • MD5

    8f5040a0a7788d84d48389effa6eba5d

  • SHA1

    96316c6134de4185fc162eaf8bc46541e7f8bf1d

  • SHA256

    99177f19eb195ecdb6233b073fa44622c088cf45e8c1e5278d57499d3a931e79

  • SHA512

    d16997eacf4f716cf213024927544220f2ebd4eab1f225a9b396584984441f863d10b51f554a11d82a95ad9fc82d5a6ca1e94a81e657d769fff1b70c48a5129d

  • SSDEEP

    12288:YIny5DYTcII+PUTAw2riOJCGgyQfhWFkeYgp8/Hf41L9NPt6M:2UTcZ+8T8rJclfEHvpC/6NPb

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\99177f19eb195ecdb6233b073fa44622c088cf45e8c1e5278d57499d3a931e79.exe
    "C:\Users\Admin\AppData\Local\Temp\99177f19eb195ecdb6233b073fa44622c088cf45e8c1e5278d57499d3a931e79.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:1872
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:436
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:912
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1384
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1048
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1388
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:880
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:816
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:684
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:928
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1372
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2040
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1664
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1716

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d89837970c51b1869178679c3d8afd7f

            SHA1

            53486070c330fe677d33c9da78757839aada0b80

            SHA256

            70c3b52654a5b597a824ea9951fd3e223bdad987ba7f8466b28a2493384855e3

            SHA512

            1062f80c18f5cc3bc9f7b869e7d8d3c2cd176f011026568e3af215134aee715854b49bb7fdfed57a6763c4f4c716518199eb5a56ceee144d71e3246815bbf70e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            b5744fbf6701fb2648f71abaaafc13f6

            SHA1

            6fd0bcc1d59970d7f5202c5a525ec2fcb9d91f75

            SHA256

            ef9df8e561a6277bbcfb0b6922607ea8602880439b0accfa7ccd325c4f24f26c

            SHA512

            c2a1f7352a3cb8960772513d0843db9803a6d348c5755fc8a82a457a3ecfdc92c18ec72b834b9ceb8b2abb426d293799f9ec28cc62280afbd20d20c2f1ed8eab

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7ac8fdf267d178676cbaf1910613589b

            SHA1

            11e7547da8278380e433a0d87df0a85a18215886

            SHA256

            2613d9a8e99f63c8fdfaa54ed1826403c9efe3866c6d8c514cd6a23e75d349cf

            SHA512

            c43b676e05cb6d467d0858ce57783006e716f9f2147d73acd9c9eece8d56716a202c4a8f81527cf7f08cee4c1ec5ff18a427beb6e2c202f6911e539316de9c20

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0753be67849d07e0bf4f3de4dad0a108

            SHA1

            b7ead31a0a8692196e667770b12839dd48dfc244

            SHA256

            0112656cfc43426e7d14f24366f4f39443c855ad25815a58241cca7d487c537f

            SHA512

            2351739ea82de1b0883507622c635d1d1b80164eab7a4834394c65c67777ec5a3609f29498d37e6c4587069165c818f50cc602ace65396745ea488bdd5a4dbae

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0753be67849d07e0bf4f3de4dad0a108

            SHA1

            b7ead31a0a8692196e667770b12839dd48dfc244

            SHA256

            0112656cfc43426e7d14f24366f4f39443c855ad25815a58241cca7d487c537f

            SHA512

            2351739ea82de1b0883507622c635d1d1b80164eab7a4834394c65c67777ec5a3609f29498d37e6c4587069165c818f50cc602ace65396745ea488bdd5a4dbae

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eb2e7b2f0191b818452308d1a575eac1

            SHA1

            e0e95aeec012eb6eb85d049c771622edba8e4eca

            SHA256

            c04de048e589f6c50eca6a5ebe1ca429bdb8c5b6ec88d18a055b2d1152717f76

            SHA512

            860696817bc71e9f7a7c9a24760bf5f16bd25dc32d4d9a38fbc128886f10148fb8a2337b9e85cce71707adb840f7a160c1f576c47ff82c7e76dd4f53855c6fc4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eb2e7b2f0191b818452308d1a575eac1

            SHA1

            e0e95aeec012eb6eb85d049c771622edba8e4eca

            SHA256

            c04de048e589f6c50eca6a5ebe1ca429bdb8c5b6ec88d18a055b2d1152717f76

            SHA512

            860696817bc71e9f7a7c9a24760bf5f16bd25dc32d4d9a38fbc128886f10148fb8a2337b9e85cce71707adb840f7a160c1f576c47ff82c7e76dd4f53855c6fc4

          • \Users\Admin\AppData\Local\Temp\nsy8CA.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy8CA.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy8CA.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy8CA.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy8CA.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d89837970c51b1869178679c3d8afd7f

            SHA1

            53486070c330fe677d33c9da78757839aada0b80

            SHA256

            70c3b52654a5b597a824ea9951fd3e223bdad987ba7f8466b28a2493384855e3

            SHA512

            1062f80c18f5cc3bc9f7b869e7d8d3c2cd176f011026568e3af215134aee715854b49bb7fdfed57a6763c4f4c716518199eb5a56ceee144d71e3246815bbf70e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d89837970c51b1869178679c3d8afd7f

            SHA1

            53486070c330fe677d33c9da78757839aada0b80

            SHA256

            70c3b52654a5b597a824ea9951fd3e223bdad987ba7f8466b28a2493384855e3

            SHA512

            1062f80c18f5cc3bc9f7b869e7d8d3c2cd176f011026568e3af215134aee715854b49bb7fdfed57a6763c4f4c716518199eb5a56ceee144d71e3246815bbf70e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d89837970c51b1869178679c3d8afd7f

            SHA1

            53486070c330fe677d33c9da78757839aada0b80

            SHA256

            70c3b52654a5b597a824ea9951fd3e223bdad987ba7f8466b28a2493384855e3

            SHA512

            1062f80c18f5cc3bc9f7b869e7d8d3c2cd176f011026568e3af215134aee715854b49bb7fdfed57a6763c4f4c716518199eb5a56ceee144d71e3246815bbf70e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            b5744fbf6701fb2648f71abaaafc13f6

            SHA1

            6fd0bcc1d59970d7f5202c5a525ec2fcb9d91f75

            SHA256

            ef9df8e561a6277bbcfb0b6922607ea8602880439b0accfa7ccd325c4f24f26c

            SHA512

            c2a1f7352a3cb8960772513d0843db9803a6d348c5755fc8a82a457a3ecfdc92c18ec72b834b9ceb8b2abb426d293799f9ec28cc62280afbd20d20c2f1ed8eab

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            b5744fbf6701fb2648f71abaaafc13f6

            SHA1

            6fd0bcc1d59970d7f5202c5a525ec2fcb9d91f75

            SHA256

            ef9df8e561a6277bbcfb0b6922607ea8602880439b0accfa7ccd325c4f24f26c

            SHA512

            c2a1f7352a3cb8960772513d0843db9803a6d348c5755fc8a82a457a3ecfdc92c18ec72b834b9ceb8b2abb426d293799f9ec28cc62280afbd20d20c2f1ed8eab

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7ac8fdf267d178676cbaf1910613589b

            SHA1

            11e7547da8278380e433a0d87df0a85a18215886

            SHA256

            2613d9a8e99f63c8fdfaa54ed1826403c9efe3866c6d8c514cd6a23e75d349cf

            SHA512

            c43b676e05cb6d467d0858ce57783006e716f9f2147d73acd9c9eece8d56716a202c4a8f81527cf7f08cee4c1ec5ff18a427beb6e2c202f6911e539316de9c20

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0753be67849d07e0bf4f3de4dad0a108

            SHA1

            b7ead31a0a8692196e667770b12839dd48dfc244

            SHA256

            0112656cfc43426e7d14f24366f4f39443c855ad25815a58241cca7d487c537f

            SHA512

            2351739ea82de1b0883507622c635d1d1b80164eab7a4834394c65c67777ec5a3609f29498d37e6c4587069165c818f50cc602ace65396745ea488bdd5a4dbae

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eb2e7b2f0191b818452308d1a575eac1

            SHA1

            e0e95aeec012eb6eb85d049c771622edba8e4eca

            SHA256

            c04de048e589f6c50eca6a5ebe1ca429bdb8c5b6ec88d18a055b2d1152717f76

            SHA512

            860696817bc71e9f7a7c9a24760bf5f16bd25dc32d4d9a38fbc128886f10148fb8a2337b9e85cce71707adb840f7a160c1f576c47ff82c7e76dd4f53855c6fc4

          • memory/436-58-0x0000000000000000-mapping.dmp

          • memory/684-81-0x0000000000000000-mapping.dmp

          • memory/816-77-0x0000000000000000-mapping.dmp

          • memory/880-71-0x0000000000000000-mapping.dmp

          • memory/912-59-0x0000000000000000-mapping.dmp

          • memory/928-82-0x0000000000000000-mapping.dmp

          • memory/1048-62-0x0000000000000000-mapping.dmp

          • memory/1372-87-0x0000000000000000-mapping.dmp

          • memory/1384-61-0x0000000000000000-mapping.dmp

          • memory/1388-64-0x0000000000000000-mapping.dmp

          • memory/1872-54-0x0000000075EC1000-0x0000000075EC3000-memory.dmp

            Filesize

            8KB

          • memory/1872-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1872-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1872-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2040-88-0x0000000000000000-mapping.dmp