Analysis

  • max time kernel
    42s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

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

General

  • Target

    d900aa11f70ae208d41ca4e30222135767eab7b1f70a51de5ba463456da5224e.exe

  • Size

    603KB

  • MD5

    7f493d48cd7724dbeeac1a197be9bbf8

  • SHA1

    27b4ed8673317155d7bcdd370924d5cf0f70a536

  • SHA256

    d900aa11f70ae208d41ca4e30222135767eab7b1f70a51de5ba463456da5224e

  • SHA512

    2ca48c1b24fb418b1683a219065446e6bf0b1f0b7cd36045ccb780ae802cf40c1c6fbd5f23602a2ea64718e2e04b47641808de9b3fd23190afb9ea0365553d5e

  • SSDEEP

    12288:+Iny5DYT9VIZz+YNpZ3t/xtl/SbYjOh2ha9luHezhIL:gUT9VNkbt/xtl/SbYjvai+zhIL

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\d900aa11f70ae208d41ca4e30222135767eab7b1f70a51de5ba463456da5224e.exe
    "C:\Users\Admin\AppData\Local\Temp\d900aa11f70ae208d41ca4e30222135767eab7b1f70a51de5ba463456da5224e.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:864
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1784
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1380
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1768
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1156
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1340
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2008
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1068
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1960
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2040
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1368
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:384
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1920

          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

            a69e231ba4e2dee2bf7c26a028a28a79

            SHA1

            5a334724b380e2086cd90e86d4abb3db727ea185

            SHA256

            47767fc2b79144711658337be7dc72e010cef355547e762f3aa1143a3fcc148a

            SHA512

            e3b2bb29e09a32a25b6761c57f7b6dc3734e8b61b354372c839f1952d7b715b0b87a524bf25d57b560498520efa0572b6b2d9c505108b9fa2faf52b66320fc51

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

            241KB

            MD5

            8077ed12186120b4853e748898cb4959

            SHA1

            888cf778d2504064eb3125422e99637ca3df58c0

            SHA256

            4a3326fd8613e54455324e8dd4a17563d22a5011dcf18fd12a23b6cc6fe8f4f9

            SHA512

            079116d52b2c74e3fcba477e3be2ddad681da607f10e09a69ee93a2c423b743ada6e9f37ea68134b0f5edb425d6ff364f924fdf4ce01945985b3c7f0f60f8010

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

            108KB

            MD5

            b4986713942b06e6e038be4a29a6f134

            SHA1

            6801158fdfa68836589d4cfb256605ea03679377

            SHA256

            b31ef7216c6b67915d524b0b164b012a0ccdf76439c8109812d98d08200cf963

            SHA512

            8ae9174815a81a91763f1e75200dbcff025da8d36ba1720ded9205a3baa1d0f5ecf9feff39155bc95fa02b7ed9761f4b5a240f66d67a1aae12e9dfb96f793d87

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

            176KB

            MD5

            7286ff4fa2044634015eeadb9b636c37

            SHA1

            c6d35b429fba555f7c3b6f1a73412703549af230

            SHA256

            edd0d51742a97ded848fb2f5077a2fd40b648b8fe4a43167df9a3b831e23f892

            SHA512

            5fec71c0ed74dcaabfe6405e71517648d9372af2b7e91305db7ed890bab38810bd35395ee4621f7d560599f45901d2487e34c764e1a5a69fccae7767df8f68b5

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

            176KB

            MD5

            7286ff4fa2044634015eeadb9b636c37

            SHA1

            c6d35b429fba555f7c3b6f1a73412703549af230

            SHA256

            edd0d51742a97ded848fb2f5077a2fd40b648b8fe4a43167df9a3b831e23f892

            SHA512

            5fec71c0ed74dcaabfe6405e71517648d9372af2b7e91305db7ed890bab38810bd35395ee4621f7d560599f45901d2487e34c764e1a5a69fccae7767df8f68b5

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

            158KB

            MD5

            3345ca6aefb857d18c396a7269ca1796

            SHA1

            87716a0026df97a52d9af27ec24278f4495bf2e2

            SHA256

            053b14bb004f1905aa956ab18b58c0b3190e4e835343d55658f548bc14dc274f

            SHA512

            bf095a11857165e68deb3f030604d9ceb9685ff21ff78db734554ec39926fa087f9256893cd7b33bb129e01cb4b44f5fd572b8c02ebd1f72a81d0ad87ab43440

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

            158KB

            MD5

            3345ca6aefb857d18c396a7269ca1796

            SHA1

            87716a0026df97a52d9af27ec24278f4495bf2e2

            SHA256

            053b14bb004f1905aa956ab18b58c0b3190e4e835343d55658f548bc14dc274f

            SHA512

            bf095a11857165e68deb3f030604d9ceb9685ff21ff78db734554ec39926fa087f9256893cd7b33bb129e01cb4b44f5fd572b8c02ebd1f72a81d0ad87ab43440

          • \Users\Admin\AppData\Local\Temp\nsy11A0.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy11A0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy11A0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy11A0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy11A0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            a69e231ba4e2dee2bf7c26a028a28a79

            SHA1

            5a334724b380e2086cd90e86d4abb3db727ea185

            SHA256

            47767fc2b79144711658337be7dc72e010cef355547e762f3aa1143a3fcc148a

            SHA512

            e3b2bb29e09a32a25b6761c57f7b6dc3734e8b61b354372c839f1952d7b715b0b87a524bf25d57b560498520efa0572b6b2d9c505108b9fa2faf52b66320fc51

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            a69e231ba4e2dee2bf7c26a028a28a79

            SHA1

            5a334724b380e2086cd90e86d4abb3db727ea185

            SHA256

            47767fc2b79144711658337be7dc72e010cef355547e762f3aa1143a3fcc148a

            SHA512

            e3b2bb29e09a32a25b6761c57f7b6dc3734e8b61b354372c839f1952d7b715b0b87a524bf25d57b560498520efa0572b6b2d9c505108b9fa2faf52b66320fc51

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            a69e231ba4e2dee2bf7c26a028a28a79

            SHA1

            5a334724b380e2086cd90e86d4abb3db727ea185

            SHA256

            47767fc2b79144711658337be7dc72e010cef355547e762f3aa1143a3fcc148a

            SHA512

            e3b2bb29e09a32a25b6761c57f7b6dc3734e8b61b354372c839f1952d7b715b0b87a524bf25d57b560498520efa0572b6b2d9c505108b9fa2faf52b66320fc51

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            8077ed12186120b4853e748898cb4959

            SHA1

            888cf778d2504064eb3125422e99637ca3df58c0

            SHA256

            4a3326fd8613e54455324e8dd4a17563d22a5011dcf18fd12a23b6cc6fe8f4f9

            SHA512

            079116d52b2c74e3fcba477e3be2ddad681da607f10e09a69ee93a2c423b743ada6e9f37ea68134b0f5edb425d6ff364f924fdf4ce01945985b3c7f0f60f8010

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            8077ed12186120b4853e748898cb4959

            SHA1

            888cf778d2504064eb3125422e99637ca3df58c0

            SHA256

            4a3326fd8613e54455324e8dd4a17563d22a5011dcf18fd12a23b6cc6fe8f4f9

            SHA512

            079116d52b2c74e3fcba477e3be2ddad681da607f10e09a69ee93a2c423b743ada6e9f37ea68134b0f5edb425d6ff364f924fdf4ce01945985b3c7f0f60f8010

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            b4986713942b06e6e038be4a29a6f134

            SHA1

            6801158fdfa68836589d4cfb256605ea03679377

            SHA256

            b31ef7216c6b67915d524b0b164b012a0ccdf76439c8109812d98d08200cf963

            SHA512

            8ae9174815a81a91763f1e75200dbcff025da8d36ba1720ded9205a3baa1d0f5ecf9feff39155bc95fa02b7ed9761f4b5a240f66d67a1aae12e9dfb96f793d87

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            7286ff4fa2044634015eeadb9b636c37

            SHA1

            c6d35b429fba555f7c3b6f1a73412703549af230

            SHA256

            edd0d51742a97ded848fb2f5077a2fd40b648b8fe4a43167df9a3b831e23f892

            SHA512

            5fec71c0ed74dcaabfe6405e71517648d9372af2b7e91305db7ed890bab38810bd35395ee4621f7d560599f45901d2487e34c764e1a5a69fccae7767df8f68b5

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            3345ca6aefb857d18c396a7269ca1796

            SHA1

            87716a0026df97a52d9af27ec24278f4495bf2e2

            SHA256

            053b14bb004f1905aa956ab18b58c0b3190e4e835343d55658f548bc14dc274f

            SHA512

            bf095a11857165e68deb3f030604d9ceb9685ff21ff78db734554ec39926fa087f9256893cd7b33bb129e01cb4b44f5fd572b8c02ebd1f72a81d0ad87ab43440

          • memory/864-54-0x0000000075141000-0x0000000075143000-memory.dmp
            Filesize

            8KB

          • memory/864-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/864-55-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/944-58-0x0000000000000000-mapping.dmp
          • memory/1068-80-0x0000000000000000-mapping.dmp
          • memory/1156-64-0x0000000000000000-mapping.dmp
          • memory/1340-70-0x0000000000000000-mapping.dmp
          • memory/1368-87-0x0000000000000000-mapping.dmp
          • memory/1380-61-0x0000000000000000-mapping.dmp
          • memory/1768-62-0x0000000000000000-mapping.dmp
          • memory/1784-59-0x0000000000000000-mapping.dmp
          • memory/1960-81-0x0000000000000000-mapping.dmp
          • memory/2008-76-0x0000000000000000-mapping.dmp
          • memory/2040-86-0x0000000000000000-mapping.dmp