Analysis

  • max time kernel
    69s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:21

General

  • Target

    817e8d5ac31b571f2ac3f83ff2dd04052df855e34a60858fcf45296f7b9fa803.exe

  • Size

    601KB

  • MD5

    c4bc80623b05c4fa967442a9f595bdb8

  • SHA1

    35987383563b736bb2aa0fbfdfccb401cee9611a

  • SHA256

    817e8d5ac31b571f2ac3f83ff2dd04052df855e34a60858fcf45296f7b9fa803

  • SHA512

    debaadae19f1d7c85ee7c5817f3999339ecc4af104d3026d39205f466ad01a1bdea3bb7d2c8580e717cad16ff70f10145ff651ff568ddb1a982563cf13ea3d46

  • SSDEEP

    12288:2Iny5DYT/08UPx5gYNHfyq1k7EgC9x4H8zWG5wxqv:4UTcpuYYYk7nCQcXx

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\817e8d5ac31b571f2ac3f83ff2dd04052df855e34a60858fcf45296f7b9fa803.exe
    "C:\Users\Admin\AppData\Local\Temp\817e8d5ac31b571f2ac3f83ff2dd04052df855e34a60858fcf45296f7b9fa803.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:748
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:296
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:564
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1820
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1496
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:528
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1624
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1076
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1712
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1504
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1376
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1216
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2028
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:976

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            36d42a74935673caf4ae77e12beb236a

            SHA1

            8937c8e5f6101fa57cfbd32f142451c4a117b0e0

            SHA256

            1fd85ff4fd8b2e0bfd645697a1f872f0042bfaff61f7693531ceebcb910695cd

            SHA512

            cd287978967ef42dd03f22d28a6e46bc93dc54879ee5e3027bf68db2a9d193fa4ad1c9291e7a49812256798c173a9564fd29f0795f3327e70ce87db2d38d879d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f0437fc4088ce07caf1c5b4ced62ca0c

            SHA1

            ea3d5099cc20eaf132e8e99848a0a50c0198861f

            SHA256

            de4501e987f0b6b92774b34a83f3d185f69b792cf4f1f14fa68354996b807d41

            SHA512

            75066d27ad116b9d82045c4b85b0bec54a249cddce0223fcdd7d435b0a313f488c3a9b35ac65bbdc41c44c6abadb2dd2d877de6f580d20e4dc34119a8a6368c3

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a049fe948588eb97bde7b61651d74ebe

            SHA1

            454055eac52ef269f3d759fc986141ac52ab9b43

            SHA256

            6cca50ee7958d6ce3415048544aaf67750e2fcef769868077a4257b7c009bee2

            SHA512

            2c8f9aa4b14208db0d813de9f24c950e5e5a96b14cbe707d2a2caeb237636216261e97f54dac55b54173830eaee88898543e3825177ef74f91835450ceba2e7b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            742b2b1036007b3dfa6bea322af4add0

            SHA1

            bf6f246a1022c370d5d5508076ed36993c88f7fc

            SHA256

            5848ee4acc23041cd59f1337e2aaf18744df4d137b01ee6e580464b1135199d8

            SHA512

            0d8970f7a2e0bffff1c5eaf84dd1367b199aff4e725d73e218696b00b404436f68c5e2b61de184c40a06d206a6bdf80021cad8519a07e0ec40f7db48bde5e291

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            742b2b1036007b3dfa6bea322af4add0

            SHA1

            bf6f246a1022c370d5d5508076ed36993c88f7fc

            SHA256

            5848ee4acc23041cd59f1337e2aaf18744df4d137b01ee6e580464b1135199d8

            SHA512

            0d8970f7a2e0bffff1c5eaf84dd1367b199aff4e725d73e218696b00b404436f68c5e2b61de184c40a06d206a6bdf80021cad8519a07e0ec40f7db48bde5e291

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            cead819a3f42110c2d35e5314f1733ad

            SHA1

            645b0054d8871c9c20e8c797c36fc32af4801eeb

            SHA256

            da594b04d33677174781c82ca34d3b05992ee615dc6ee1e007d798c6e01d2263

            SHA512

            15cfe4cf4092d0b2722b713213b83fd4d843ff81a05477f0d9b311abbd8bcd9dcba50202bae4f73c17327cb65a39346cbf85862655cabba348ecccf5db8a51d7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            cead819a3f42110c2d35e5314f1733ad

            SHA1

            645b0054d8871c9c20e8c797c36fc32af4801eeb

            SHA256

            da594b04d33677174781c82ca34d3b05992ee615dc6ee1e007d798c6e01d2263

            SHA512

            15cfe4cf4092d0b2722b713213b83fd4d843ff81a05477f0d9b311abbd8bcd9dcba50202bae4f73c17327cb65a39346cbf85862655cabba348ecccf5db8a51d7

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            36d42a74935673caf4ae77e12beb236a

            SHA1

            8937c8e5f6101fa57cfbd32f142451c4a117b0e0

            SHA256

            1fd85ff4fd8b2e0bfd645697a1f872f0042bfaff61f7693531ceebcb910695cd

            SHA512

            cd287978967ef42dd03f22d28a6e46bc93dc54879ee5e3027bf68db2a9d193fa4ad1c9291e7a49812256798c173a9564fd29f0795f3327e70ce87db2d38d879d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            36d42a74935673caf4ae77e12beb236a

            SHA1

            8937c8e5f6101fa57cfbd32f142451c4a117b0e0

            SHA256

            1fd85ff4fd8b2e0bfd645697a1f872f0042bfaff61f7693531ceebcb910695cd

            SHA512

            cd287978967ef42dd03f22d28a6e46bc93dc54879ee5e3027bf68db2a9d193fa4ad1c9291e7a49812256798c173a9564fd29f0795f3327e70ce87db2d38d879d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            36d42a74935673caf4ae77e12beb236a

            SHA1

            8937c8e5f6101fa57cfbd32f142451c4a117b0e0

            SHA256

            1fd85ff4fd8b2e0bfd645697a1f872f0042bfaff61f7693531ceebcb910695cd

            SHA512

            cd287978967ef42dd03f22d28a6e46bc93dc54879ee5e3027bf68db2a9d193fa4ad1c9291e7a49812256798c173a9564fd29f0795f3327e70ce87db2d38d879d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f0437fc4088ce07caf1c5b4ced62ca0c

            SHA1

            ea3d5099cc20eaf132e8e99848a0a50c0198861f

            SHA256

            de4501e987f0b6b92774b34a83f3d185f69b792cf4f1f14fa68354996b807d41

            SHA512

            75066d27ad116b9d82045c4b85b0bec54a249cddce0223fcdd7d435b0a313f488c3a9b35ac65bbdc41c44c6abadb2dd2d877de6f580d20e4dc34119a8a6368c3

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f0437fc4088ce07caf1c5b4ced62ca0c

            SHA1

            ea3d5099cc20eaf132e8e99848a0a50c0198861f

            SHA256

            de4501e987f0b6b92774b34a83f3d185f69b792cf4f1f14fa68354996b807d41

            SHA512

            75066d27ad116b9d82045c4b85b0bec54a249cddce0223fcdd7d435b0a313f488c3a9b35ac65bbdc41c44c6abadb2dd2d877de6f580d20e4dc34119a8a6368c3

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a049fe948588eb97bde7b61651d74ebe

            SHA1

            454055eac52ef269f3d759fc986141ac52ab9b43

            SHA256

            6cca50ee7958d6ce3415048544aaf67750e2fcef769868077a4257b7c009bee2

            SHA512

            2c8f9aa4b14208db0d813de9f24c950e5e5a96b14cbe707d2a2caeb237636216261e97f54dac55b54173830eaee88898543e3825177ef74f91835450ceba2e7b

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            742b2b1036007b3dfa6bea322af4add0

            SHA1

            bf6f246a1022c370d5d5508076ed36993c88f7fc

            SHA256

            5848ee4acc23041cd59f1337e2aaf18744df4d137b01ee6e580464b1135199d8

            SHA512

            0d8970f7a2e0bffff1c5eaf84dd1367b199aff4e725d73e218696b00b404436f68c5e2b61de184c40a06d206a6bdf80021cad8519a07e0ec40f7db48bde5e291

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            cead819a3f42110c2d35e5314f1733ad

            SHA1

            645b0054d8871c9c20e8c797c36fc32af4801eeb

            SHA256

            da594b04d33677174781c82ca34d3b05992ee615dc6ee1e007d798c6e01d2263

            SHA512

            15cfe4cf4092d0b2722b713213b83fd4d843ff81a05477f0d9b311abbd8bcd9dcba50202bae4f73c17327cb65a39346cbf85862655cabba348ecccf5db8a51d7

          • memory/296-57-0x0000000000000000-mapping.dmp

          • memory/528-64-0x0000000000000000-mapping.dmp

          • memory/564-58-0x0000000000000000-mapping.dmp

          • memory/748-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/748-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/748-54-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

            Filesize

            8KB

          • memory/748-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1076-77-0x0000000000000000-mapping.dmp

          • memory/1216-88-0x0000000000000000-mapping.dmp

          • memory/1376-87-0x0000000000000000-mapping.dmp

          • memory/1496-62-0x0000000000000000-mapping.dmp

          • memory/1504-82-0x0000000000000000-mapping.dmp

          • memory/1624-71-0x0000000000000000-mapping.dmp

          • memory/1712-81-0x0000000000000000-mapping.dmp

          • memory/1820-61-0x0000000000000000-mapping.dmp