Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:09

General

  • Target

    e4a7a789ccd5138cd444b1647fa6567562039bb80ca1e47025480f558ffa68f3.exe

  • Size

    602KB

  • MD5

    f77b5796853b934b08a00dd70ba04c08

  • SHA1

    3211dcc1a140b9805b7d05313a618b33e7f394e8

  • SHA256

    e4a7a789ccd5138cd444b1647fa6567562039bb80ca1e47025480f558ffa68f3

  • SHA512

    ed9972acdec74a638c9b9d0708a5be7a97312eed916adae1b54d7a06ee329cf46ae03de0f5e4a3059717dd935a435145da7b064ef5cac998ce6289f36d190c1b

  • SSDEEP

    12288:JIny5DYT2Mr/nJuLGKrajMVcpCbf3Jsdorjcl5k:lUT2M9uKKejgcpKkQY5

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\e4a7a789ccd5138cd444b1647fa6567562039bb80ca1e47025480f558ffa68f3.exe
    "C:\Users\Admin\AppData\Local\Temp\e4a7a789ccd5138cd444b1647fa6567562039bb80ca1e47025480f558ffa68f3.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:2028
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:668
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:580
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2020
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1872
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1416
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1492
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1992
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1904
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:644
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1172
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1924
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1508

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8350fb817381b5f3386a616307bd1908

            SHA1

            aed372720ab664c60d96ab1773acf37b239a1b51

            SHA256

            3be14bb0d84ae582f9016d47b68ea80ca4d87121ab2507ae05bdc36de3aa23d6

            SHA512

            62c0d5b4a7f565c4f5ec252ceed325dad9cf9124c60e5b19c3fb6436973af1d63ffff5c723d7bca094436dd5a8358c0ab73e51458ea7a853bdd783418ab54192

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            56b0c70c674c2d71bcdde2d4babe4f79

            SHA1

            3c87bad43f35d87e9a7cd7fe3cf7a83d8e659835

            SHA256

            c750bcdd763a1663c382baca4f0dabf539e3e5e5cf40efc6a469c11e1dac273c

            SHA512

            ff09a7f2f2bacc6671e1561a5ed96fd3f8562d4463b27762dfb088269a124b1fdd575de17a31433164681db438d0b78468ce495ffb6ea99905d46576f0c8dbc6

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0f46c970bdeb80179cbe4ddaabbd68ca

            SHA1

            adfdb7e25b7ab8348fbb93222caf3dd6d919ddf2

            SHA256

            968a22719e1b2fa7ec9070e12ed31a13a7c9366249780212983fba855a8cf9f6

            SHA512

            004b65cd3a4cbbe4d0fafa0f448f4f6b2d6dfcb9412833eb27611dfb82796c2f6422bdb5e3bb8e433f2f6ff718bbb848a6f1e2a3a56293590198283f7e9aba55

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b04dfe447cf489457447617899998685

            SHA1

            3fb4f44360739a8101df67244627e356722f33ee

            SHA256

            63aa05a09cfcb0b820869079888049e8aafe8f4dc42ce85d788001f5b5c4ffc4

            SHA512

            84ec8127837cef07aa337f209ba12b9132d404e202c774417adca2c3979488d6571bbf71d2621e0dc4e78cc1bf2b11ed3e8d5a9076ec56cf0d7cadaa25dccc22

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b04dfe447cf489457447617899998685

            SHA1

            3fb4f44360739a8101df67244627e356722f33ee

            SHA256

            63aa05a09cfcb0b820869079888049e8aafe8f4dc42ce85d788001f5b5c4ffc4

            SHA512

            84ec8127837cef07aa337f209ba12b9132d404e202c774417adca2c3979488d6571bbf71d2621e0dc4e78cc1bf2b11ed3e8d5a9076ec56cf0d7cadaa25dccc22

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            5c732d2d505c4700034a0c0af8e9c2cf

            SHA1

            56afb17a0f099691f23a3ba11cd820f9580c4bd8

            SHA256

            bc912a8b12cbf23533f996508ad662a64e9d16e7210859328f5263b3513e8922

            SHA512

            edff908bbd2d4b9b02bf4565d42f96ea4d2ca2278e192d56d395ccc2a9b42019516b3a8ba9e9885a9565fdeb0c1c35fe6bb6b83315d22d5782a70ca571b23bf3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            5c732d2d505c4700034a0c0af8e9c2cf

            SHA1

            56afb17a0f099691f23a3ba11cd820f9580c4bd8

            SHA256

            bc912a8b12cbf23533f996508ad662a64e9d16e7210859328f5263b3513e8922

            SHA512

            edff908bbd2d4b9b02bf4565d42f96ea4d2ca2278e192d56d395ccc2a9b42019516b3a8ba9e9885a9565fdeb0c1c35fe6bb6b83315d22d5782a70ca571b23bf3

          • \Users\Admin\AppData\Local\Temp\nstB69.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstB69.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstB69.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstB69.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstB69.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8350fb817381b5f3386a616307bd1908

            SHA1

            aed372720ab664c60d96ab1773acf37b239a1b51

            SHA256

            3be14bb0d84ae582f9016d47b68ea80ca4d87121ab2507ae05bdc36de3aa23d6

            SHA512

            62c0d5b4a7f565c4f5ec252ceed325dad9cf9124c60e5b19c3fb6436973af1d63ffff5c723d7bca094436dd5a8358c0ab73e51458ea7a853bdd783418ab54192

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8350fb817381b5f3386a616307bd1908

            SHA1

            aed372720ab664c60d96ab1773acf37b239a1b51

            SHA256

            3be14bb0d84ae582f9016d47b68ea80ca4d87121ab2507ae05bdc36de3aa23d6

            SHA512

            62c0d5b4a7f565c4f5ec252ceed325dad9cf9124c60e5b19c3fb6436973af1d63ffff5c723d7bca094436dd5a8358c0ab73e51458ea7a853bdd783418ab54192

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8350fb817381b5f3386a616307bd1908

            SHA1

            aed372720ab664c60d96ab1773acf37b239a1b51

            SHA256

            3be14bb0d84ae582f9016d47b68ea80ca4d87121ab2507ae05bdc36de3aa23d6

            SHA512

            62c0d5b4a7f565c4f5ec252ceed325dad9cf9124c60e5b19c3fb6436973af1d63ffff5c723d7bca094436dd5a8358c0ab73e51458ea7a853bdd783418ab54192

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            56b0c70c674c2d71bcdde2d4babe4f79

            SHA1

            3c87bad43f35d87e9a7cd7fe3cf7a83d8e659835

            SHA256

            c750bcdd763a1663c382baca4f0dabf539e3e5e5cf40efc6a469c11e1dac273c

            SHA512

            ff09a7f2f2bacc6671e1561a5ed96fd3f8562d4463b27762dfb088269a124b1fdd575de17a31433164681db438d0b78468ce495ffb6ea99905d46576f0c8dbc6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            56b0c70c674c2d71bcdde2d4babe4f79

            SHA1

            3c87bad43f35d87e9a7cd7fe3cf7a83d8e659835

            SHA256

            c750bcdd763a1663c382baca4f0dabf539e3e5e5cf40efc6a469c11e1dac273c

            SHA512

            ff09a7f2f2bacc6671e1561a5ed96fd3f8562d4463b27762dfb088269a124b1fdd575de17a31433164681db438d0b78468ce495ffb6ea99905d46576f0c8dbc6

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0f46c970bdeb80179cbe4ddaabbd68ca

            SHA1

            adfdb7e25b7ab8348fbb93222caf3dd6d919ddf2

            SHA256

            968a22719e1b2fa7ec9070e12ed31a13a7c9366249780212983fba855a8cf9f6

            SHA512

            004b65cd3a4cbbe4d0fafa0f448f4f6b2d6dfcb9412833eb27611dfb82796c2f6422bdb5e3bb8e433f2f6ff718bbb848a6f1e2a3a56293590198283f7e9aba55

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b04dfe447cf489457447617899998685

            SHA1

            3fb4f44360739a8101df67244627e356722f33ee

            SHA256

            63aa05a09cfcb0b820869079888049e8aafe8f4dc42ce85d788001f5b5c4ffc4

            SHA512

            84ec8127837cef07aa337f209ba12b9132d404e202c774417adca2c3979488d6571bbf71d2621e0dc4e78cc1bf2b11ed3e8d5a9076ec56cf0d7cadaa25dccc22

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            5c732d2d505c4700034a0c0af8e9c2cf

            SHA1

            56afb17a0f099691f23a3ba11cd820f9580c4bd8

            SHA256

            bc912a8b12cbf23533f996508ad662a64e9d16e7210859328f5263b3513e8922

            SHA512

            edff908bbd2d4b9b02bf4565d42f96ea4d2ca2278e192d56d395ccc2a9b42019516b3a8ba9e9885a9565fdeb0c1c35fe6bb6b83315d22d5782a70ca571b23bf3

          • memory/580-61-0x0000000000000000-mapping.dmp

          • memory/644-86-0x0000000000000000-mapping.dmp

          • memory/668-59-0x0000000000000000-mapping.dmp

          • memory/1172-87-0x0000000000000000-mapping.dmp

          • memory/1416-70-0x0000000000000000-mapping.dmp

          • memory/1492-76-0x0000000000000000-mapping.dmp

          • memory/1872-64-0x0000000000000000-mapping.dmp

          • memory/1904-81-0x0000000000000000-mapping.dmp

          • memory/1992-80-0x0000000000000000-mapping.dmp

          • memory/2008-58-0x0000000000000000-mapping.dmp

          • memory/2020-62-0x0000000000000000-mapping.dmp

          • memory/2028-54-0x00000000759F1000-0x00000000759F3000-memory.dmp

            Filesize

            8KB

          • memory/2028-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2028-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB