Analysis

  • max time kernel
    43s
  • 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 10:06

General

  • Target

    febdf75214973b440f5b07e0b7c690f65d4a567bf48ae2f977dd62b893a9a77d.exe

  • Size

    603KB

  • MD5

    7423d43f66efd01a62c031f026896cf3

  • SHA1

    a3f1044b0cbc0f8afaa8f735860333f0d4632e9a

  • SHA256

    febdf75214973b440f5b07e0b7c690f65d4a567bf48ae2f977dd62b893a9a77d

  • SHA512

    02c539a072aee17288b39e3a024961d6fb30b30db6df0586d1d8793ac0f67edf2d9f72a5873eaa76f9379e53d5ba2748b653beacf3487f4c30cf57fd11e4db2e

  • SSDEEP

    12288:uIny5DYTMIBu8k7HWmNehEI3S31oIHsH5BAn:wUTMGu8k6mNw3SlJsH5BAn

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\febdf75214973b440f5b07e0b7c690f65d4a567bf48ae2f977dd62b893a9a77d.exe
    "C:\Users\Admin\AppData\Local\Temp\febdf75214973b440f5b07e0b7c690f65d4a567bf48ae2f977dd62b893a9a77d.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:1980
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1000
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1264
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:584
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:568
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:468
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1544
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1960
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1280
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1868
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:620
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:520
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1804
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1964

          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

            28ac0fd50f03f641f940de5f6e7fbba5

            SHA1

            9a1a6d6fab29a68b98a231437d7b39768ebd26f6

            SHA256

            20eb8b490e42b66b07934576aa694cf6ad9bde2ec1c52fc347e44274502152fb

            SHA512

            0bf55a6d578659e823144b6e2ef0dbe7ceac3e5df9dc86a8d940a90237387b608f114eeb68a33d9dbc008ac65378472b824f16e721fa36ed64160f1d6c3c074c

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

            244KB

            MD5

            27b29f8d2a5afc63f955c11a1ea89d68

            SHA1

            860096a2bf8934e361e2da266098d50bd55de6a1

            SHA256

            fef034c2c36baeb9e7de25898c1729c74182929698799cd752748e76db25e111

            SHA512

            9298b4919acf5a89f81aab211604c2ea636722493fd42d6d7976a54ae57562cf516f1ec410c246cb08f5e643dd15dcf7513e1759fc2bae0c035da2355e95a01f

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

            108KB

            MD5

            2777b8aab68276d0730007959bc3af80

            SHA1

            00c1aa19fa563dc34e59b667a77dc615a148002b

            SHA256

            7d8fcb625a334b3004836bdeaea3f5b6fac567e38484d9b1f3ffcf3e54599cfa

            SHA512

            3d7a318dd8c4de3c3b220d82eb0fe79342d5f273212af64acacdfc5ad107bac4ef558b115d304fa27fd12a17c6ff74871846edecd1e4c5686746be8abee0501f

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

            176KB

            MD5

            f980368061ccad55a46a46fc0040c2fd

            SHA1

            aae7f89a23a65937dec678d9b167421d51b5c050

            SHA256

            dc1d9a118a11e726a44e2e3eca4aa8f0d8dea002fb041fb4fb68e7d65a6ac3f9

            SHA512

            036a0db062ba20f3953abbaf0b96f4d68eeba1936e9869867c8563e694bcd05693fa5b41f047079b2daf2634ecc6d2e1c01dc6655316865a56b08cc38754af42

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

            176KB

            MD5

            f980368061ccad55a46a46fc0040c2fd

            SHA1

            aae7f89a23a65937dec678d9b167421d51b5c050

            SHA256

            dc1d9a118a11e726a44e2e3eca4aa8f0d8dea002fb041fb4fb68e7d65a6ac3f9

            SHA512

            036a0db062ba20f3953abbaf0b96f4d68eeba1936e9869867c8563e694bcd05693fa5b41f047079b2daf2634ecc6d2e1c01dc6655316865a56b08cc38754af42

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

            159KB

            MD5

            0305e931f8e457981132e2c22d4cb009

            SHA1

            b0cafaff2f9553384e4c8eb75e834cc1c9b6d18e

            SHA256

            55257dce121f5feefe1ad45b013e987b6d401e331cdb4e6f412299b72728ce6e

            SHA512

            c50defe68f59c260d994d5077bf24cf8b1b7d2ea493ede060f10c365df34545a25f1b08dcb559a7f3d71aa32f449c1162d0927db5d916ae98d6c352e08c5ab54

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

            159KB

            MD5

            0305e931f8e457981132e2c22d4cb009

            SHA1

            b0cafaff2f9553384e4c8eb75e834cc1c9b6d18e

            SHA256

            55257dce121f5feefe1ad45b013e987b6d401e331cdb4e6f412299b72728ce6e

            SHA512

            c50defe68f59c260d994d5077bf24cf8b1b7d2ea493ede060f10c365df34545a25f1b08dcb559a7f3d71aa32f449c1162d0927db5d916ae98d6c352e08c5ab54

          • \Users\Admin\AppData\Local\Temp\nso9772.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso9772.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso9772.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso9772.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso9772.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            28ac0fd50f03f641f940de5f6e7fbba5

            SHA1

            9a1a6d6fab29a68b98a231437d7b39768ebd26f6

            SHA256

            20eb8b490e42b66b07934576aa694cf6ad9bde2ec1c52fc347e44274502152fb

            SHA512

            0bf55a6d578659e823144b6e2ef0dbe7ceac3e5df9dc86a8d940a90237387b608f114eeb68a33d9dbc008ac65378472b824f16e721fa36ed64160f1d6c3c074c

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            28ac0fd50f03f641f940de5f6e7fbba5

            SHA1

            9a1a6d6fab29a68b98a231437d7b39768ebd26f6

            SHA256

            20eb8b490e42b66b07934576aa694cf6ad9bde2ec1c52fc347e44274502152fb

            SHA512

            0bf55a6d578659e823144b6e2ef0dbe7ceac3e5df9dc86a8d940a90237387b608f114eeb68a33d9dbc008ac65378472b824f16e721fa36ed64160f1d6c3c074c

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            28ac0fd50f03f641f940de5f6e7fbba5

            SHA1

            9a1a6d6fab29a68b98a231437d7b39768ebd26f6

            SHA256

            20eb8b490e42b66b07934576aa694cf6ad9bde2ec1c52fc347e44274502152fb

            SHA512

            0bf55a6d578659e823144b6e2ef0dbe7ceac3e5df9dc86a8d940a90237387b608f114eeb68a33d9dbc008ac65378472b824f16e721fa36ed64160f1d6c3c074c

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            27b29f8d2a5afc63f955c11a1ea89d68

            SHA1

            860096a2bf8934e361e2da266098d50bd55de6a1

            SHA256

            fef034c2c36baeb9e7de25898c1729c74182929698799cd752748e76db25e111

            SHA512

            9298b4919acf5a89f81aab211604c2ea636722493fd42d6d7976a54ae57562cf516f1ec410c246cb08f5e643dd15dcf7513e1759fc2bae0c035da2355e95a01f

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            27b29f8d2a5afc63f955c11a1ea89d68

            SHA1

            860096a2bf8934e361e2da266098d50bd55de6a1

            SHA256

            fef034c2c36baeb9e7de25898c1729c74182929698799cd752748e76db25e111

            SHA512

            9298b4919acf5a89f81aab211604c2ea636722493fd42d6d7976a54ae57562cf516f1ec410c246cb08f5e643dd15dcf7513e1759fc2bae0c035da2355e95a01f

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            2777b8aab68276d0730007959bc3af80

            SHA1

            00c1aa19fa563dc34e59b667a77dc615a148002b

            SHA256

            7d8fcb625a334b3004836bdeaea3f5b6fac567e38484d9b1f3ffcf3e54599cfa

            SHA512

            3d7a318dd8c4de3c3b220d82eb0fe79342d5f273212af64acacdfc5ad107bac4ef558b115d304fa27fd12a17c6ff74871846edecd1e4c5686746be8abee0501f

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            f980368061ccad55a46a46fc0040c2fd

            SHA1

            aae7f89a23a65937dec678d9b167421d51b5c050

            SHA256

            dc1d9a118a11e726a44e2e3eca4aa8f0d8dea002fb041fb4fb68e7d65a6ac3f9

            SHA512

            036a0db062ba20f3953abbaf0b96f4d68eeba1936e9869867c8563e694bcd05693fa5b41f047079b2daf2634ecc6d2e1c01dc6655316865a56b08cc38754af42

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            0305e931f8e457981132e2c22d4cb009

            SHA1

            b0cafaff2f9553384e4c8eb75e834cc1c9b6d18e

            SHA256

            55257dce121f5feefe1ad45b013e987b6d401e331cdb4e6f412299b72728ce6e

            SHA512

            c50defe68f59c260d994d5077bf24cf8b1b7d2ea493ede060f10c365df34545a25f1b08dcb559a7f3d71aa32f449c1162d0927db5d916ae98d6c352e08c5ab54

          • memory/468-64-0x0000000000000000-mapping.dmp
          • memory/520-88-0x0000000000000000-mapping.dmp
          • memory/568-62-0x0000000000000000-mapping.dmp
          • memory/584-61-0x0000000000000000-mapping.dmp
          • memory/620-87-0x0000000000000000-mapping.dmp
          • memory/1000-57-0x0000000000000000-mapping.dmp
          • memory/1264-58-0x0000000000000000-mapping.dmp
          • memory/1280-81-0x0000000000000000-mapping.dmp
          • memory/1544-71-0x0000000000000000-mapping.dmp
          • memory/1868-82-0x0000000000000000-mapping.dmp
          • memory/1960-77-0x0000000000000000-mapping.dmp
          • memory/1980-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1980-54-0x0000000075F61000-0x0000000075F63000-memory.dmp
            Filesize

            8KB

          • memory/1980-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1980-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB