Analysis

  • max time kernel
    62s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:53

General

  • Target

    a6c0974fecb831126c2064b4dec1da07216841d09ccf0c3446d5bd150605d2a9.exe

  • Size

    446KB

  • MD5

    c860714cd743317ae4d754427f61b95e

  • SHA1

    c2ce378a4c232f164a610ca3223fac3bc96c468f

  • SHA256

    a6c0974fecb831126c2064b4dec1da07216841d09ccf0c3446d5bd150605d2a9

  • SHA512

    81edd4858b83f46b2570bd120f3006df675f680280750db483c8deff729788c2571db965fb723f7feb6eca4d360d8f1a3baf7c4bb1f5e965051d07034e28c712

  • SSDEEP

    12288:OfVCcEBwuWNbKd+LssXJwEtjDvTTro6vRu3/nCO:ONvEB9WWessVtzTM6vM3/CO

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\a6c0974fecb831126c2064b4dec1da07216841d09ccf0c3446d5bd150605d2a9.exe
    "C:\Users\Admin\AppData\Local\Temp\a6c0974fecb831126c2064b4dec1da07216841d09ccf0c3446d5bd150605d2a9.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:2012
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1444
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1148
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1916
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:588
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1036
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1092
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1532
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:700
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1728
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:632
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:748
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:876
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1828

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0649c5041f5036e2bdf07015e42a897b

            SHA1

            2195890401f4defae77690b61380c1a02201eb5d

            SHA256

            3741b695cdaa41cbf5b597bc55d9813d58354418c6971156bd5ff6ae86436087

            SHA512

            3236f664e66004d6c0d37b81d980ed05ac503a28eeb17c281dd9ce9e8642d6d803020705d224dbbfd7279e9ff3a83fd80f76c060578fa23def3433587faaf4f4

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            eaac9f40afa5b83834345faae994ef6d

            SHA1

            80b8c92971b0374bfd7612dfb0591a3b920d3755

            SHA256

            c95c0d71a177bdcfacb0e4985e201cd53ef87f5eaab35a5eb927d6fa3542b23a

            SHA512

            a603e7c9b39245084eebe587e6105d2f23869b13615914e056e9e414fedea47ccc6928bae9e0ae5a2f4d44b789457ba06ee0e936a4892885192b2d30d7a20f18

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6c2b3f0822b3e3b2bcbb18f5a2154b56

            SHA1

            bfd7277721dd2a8dccd4ba3a3a38edfe15559ade

            SHA256

            baab061a617719d400061c1c5f4a023f9c6485d034ade30aedcc693af80716b5

            SHA512

            cf75ede0ea334aa81e31cd7d8d8d94d73fa011cdbc8e4d0a1151f6fd271c4cd30b172ef5341fb456a9dc3c76bb5b2d7bc652e532aaf55acdd4af3959650041fb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d2ae9bbe5f1dbf412861def46a9c7fd5

            SHA1

            f83feefa98ff507ad85ae07899295962b8665f13

            SHA256

            3c98007a298677ff49c105cf15cb61cbd21b3b628ef32f2c0653cc23f60be106

            SHA512

            5a7794fc82b378c1a6a57beddfe0487b91a37cfa6179b8194114851a98d11660be0e9f4e9e359e582b83f1260dd00f8fcf7ed38eb26b685e09f9ea1d01aedfb3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d2ae9bbe5f1dbf412861def46a9c7fd5

            SHA1

            f83feefa98ff507ad85ae07899295962b8665f13

            SHA256

            3c98007a298677ff49c105cf15cb61cbd21b3b628ef32f2c0653cc23f60be106

            SHA512

            5a7794fc82b378c1a6a57beddfe0487b91a37cfa6179b8194114851a98d11660be0e9f4e9e359e582b83f1260dd00f8fcf7ed38eb26b685e09f9ea1d01aedfb3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d432989252cdfebb19081ef9e5de7f8f

            SHA1

            921f056262d567e004a49d359da5797693e8ccab

            SHA256

            8b8d49eba1c23a1a1e7d81bd9fccaea754a5aac7a3f0b4e58ec384dd5437b3fe

            SHA512

            faa678a6fe01a8174f42b95bf44e4d92edab20b1fe55bc51506ad11a08d030078da122079004013f8d7543a9e1871e5cfb84781048048d5e64adc5f0b7fe889e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d432989252cdfebb19081ef9e5de7f8f

            SHA1

            921f056262d567e004a49d359da5797693e8ccab

            SHA256

            8b8d49eba1c23a1a1e7d81bd9fccaea754a5aac7a3f0b4e58ec384dd5437b3fe

            SHA512

            faa678a6fe01a8174f42b95bf44e4d92edab20b1fe55bc51506ad11a08d030078da122079004013f8d7543a9e1871e5cfb84781048048d5e64adc5f0b7fe889e

          • \Users\Admin\AppData\Local\Temp\nseEC36.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseEC36.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseEC36.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseEC36.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseEC36.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0649c5041f5036e2bdf07015e42a897b

            SHA1

            2195890401f4defae77690b61380c1a02201eb5d

            SHA256

            3741b695cdaa41cbf5b597bc55d9813d58354418c6971156bd5ff6ae86436087

            SHA512

            3236f664e66004d6c0d37b81d980ed05ac503a28eeb17c281dd9ce9e8642d6d803020705d224dbbfd7279e9ff3a83fd80f76c060578fa23def3433587faaf4f4

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0649c5041f5036e2bdf07015e42a897b

            SHA1

            2195890401f4defae77690b61380c1a02201eb5d

            SHA256

            3741b695cdaa41cbf5b597bc55d9813d58354418c6971156bd5ff6ae86436087

            SHA512

            3236f664e66004d6c0d37b81d980ed05ac503a28eeb17c281dd9ce9e8642d6d803020705d224dbbfd7279e9ff3a83fd80f76c060578fa23def3433587faaf4f4

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0649c5041f5036e2bdf07015e42a897b

            SHA1

            2195890401f4defae77690b61380c1a02201eb5d

            SHA256

            3741b695cdaa41cbf5b597bc55d9813d58354418c6971156bd5ff6ae86436087

            SHA512

            3236f664e66004d6c0d37b81d980ed05ac503a28eeb17c281dd9ce9e8642d6d803020705d224dbbfd7279e9ff3a83fd80f76c060578fa23def3433587faaf4f4

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            eaac9f40afa5b83834345faae994ef6d

            SHA1

            80b8c92971b0374bfd7612dfb0591a3b920d3755

            SHA256

            c95c0d71a177bdcfacb0e4985e201cd53ef87f5eaab35a5eb927d6fa3542b23a

            SHA512

            a603e7c9b39245084eebe587e6105d2f23869b13615914e056e9e414fedea47ccc6928bae9e0ae5a2f4d44b789457ba06ee0e936a4892885192b2d30d7a20f18

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            eaac9f40afa5b83834345faae994ef6d

            SHA1

            80b8c92971b0374bfd7612dfb0591a3b920d3755

            SHA256

            c95c0d71a177bdcfacb0e4985e201cd53ef87f5eaab35a5eb927d6fa3542b23a

            SHA512

            a603e7c9b39245084eebe587e6105d2f23869b13615914e056e9e414fedea47ccc6928bae9e0ae5a2f4d44b789457ba06ee0e936a4892885192b2d30d7a20f18

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6c2b3f0822b3e3b2bcbb18f5a2154b56

            SHA1

            bfd7277721dd2a8dccd4ba3a3a38edfe15559ade

            SHA256

            baab061a617719d400061c1c5f4a023f9c6485d034ade30aedcc693af80716b5

            SHA512

            cf75ede0ea334aa81e31cd7d8d8d94d73fa011cdbc8e4d0a1151f6fd271c4cd30b172ef5341fb456a9dc3c76bb5b2d7bc652e532aaf55acdd4af3959650041fb

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d2ae9bbe5f1dbf412861def46a9c7fd5

            SHA1

            f83feefa98ff507ad85ae07899295962b8665f13

            SHA256

            3c98007a298677ff49c105cf15cb61cbd21b3b628ef32f2c0653cc23f60be106

            SHA512

            5a7794fc82b378c1a6a57beddfe0487b91a37cfa6179b8194114851a98d11660be0e9f4e9e359e582b83f1260dd00f8fcf7ed38eb26b685e09f9ea1d01aedfb3

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d432989252cdfebb19081ef9e5de7f8f

            SHA1

            921f056262d567e004a49d359da5797693e8ccab

            SHA256

            8b8d49eba1c23a1a1e7d81bd9fccaea754a5aac7a3f0b4e58ec384dd5437b3fe

            SHA512

            faa678a6fe01a8174f42b95bf44e4d92edab20b1fe55bc51506ad11a08d030078da122079004013f8d7543a9e1871e5cfb84781048048d5e64adc5f0b7fe889e

          • memory/588-61-0x0000000000000000-mapping.dmp

          • memory/632-85-0x0000000000000000-mapping.dmp

          • memory/700-79-0x0000000000000000-mapping.dmp

          • memory/748-86-0x0000000000000000-mapping.dmp

          • memory/1036-63-0x0000000000000000-mapping.dmp

          • memory/1092-69-0x0000000000000000-mapping.dmp

          • memory/1148-58-0x0000000000000000-mapping.dmp

          • memory/1444-57-0x0000000000000000-mapping.dmp

          • memory/1532-75-0x0000000000000000-mapping.dmp

          • memory/1728-80-0x0000000000000000-mapping.dmp

          • memory/1916-60-0x0000000000000000-mapping.dmp

          • memory/2012-54-0x0000000075C41000-0x0000000075C43000-memory.dmp

            Filesize

            8KB