Analysis

  • max time kernel
    147s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:58

General

  • Target

    3e801fd323a8103f9ce0a4580ad0d257891c6069ae84d7024f1cbcc26b587d7a.exe

  • Size

    445KB

  • MD5

    4944d43f2b91caaf5d972816f02cab41

  • SHA1

    0593aabdc8a06794e4758096c142eec2c4e62eb7

  • SHA256

    3e801fd323a8103f9ce0a4580ad0d257891c6069ae84d7024f1cbcc26b587d7a

  • SHA512

    a4a9c7b9903d27a1d645bb3483ed71054270b893d6f00ad2faf9b5ec88d1c255acb5d33d0681999caf34ab2872791265849820abec201d2d84b67eb5a177e7c6

  • SSDEEP

    12288:AWAT+3oyXpEg+9SMEWt/PVBzEeyUAVCHx:AWATQvOZ9WcHVBzExUAgR

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e801fd323a8103f9ce0a4580ad0d257891c6069ae84d7024f1cbcc26b587d7a.exe
    "C:\Users\Admin\AppData\Local\Temp\3e801fd323a8103f9ce0a4580ad0d257891c6069ae84d7024f1cbcc26b587d7a.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:3740
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2356
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:364
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3816
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3140
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2784
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1620
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2896
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4044
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1512
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1228
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3420
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:4588
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2872

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf7F1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d6c25fe59bff8f4bdbce9ab3e029a57f

            SHA1

            9bb77e887e128566fddf381a189d186acea0feab

            SHA256

            ddef74f8eea5d90c217b3d38044fffca29c23abb129d8bf133d13e448037b4e1

            SHA512

            2893601d43856cc62a739120cfc5cfbfa3e8c7818a6e13a9e8d2aee92f2268b1051328677784b29fd9e5b3737428fc9622e7d61ed748b49a5212eb1a0e930648

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d6c25fe59bff8f4bdbce9ab3e029a57f

            SHA1

            9bb77e887e128566fddf381a189d186acea0feab

            SHA256

            ddef74f8eea5d90c217b3d38044fffca29c23abb129d8bf133d13e448037b4e1

            SHA512

            2893601d43856cc62a739120cfc5cfbfa3e8c7818a6e13a9e8d2aee92f2268b1051328677784b29fd9e5b3737428fc9622e7d61ed748b49a5212eb1a0e930648

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d6c25fe59bff8f4bdbce9ab3e029a57f

            SHA1

            9bb77e887e128566fddf381a189d186acea0feab

            SHA256

            ddef74f8eea5d90c217b3d38044fffca29c23abb129d8bf133d13e448037b4e1

            SHA512

            2893601d43856cc62a739120cfc5cfbfa3e8c7818a6e13a9e8d2aee92f2268b1051328677784b29fd9e5b3737428fc9622e7d61ed748b49a5212eb1a0e930648

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d6c25fe59bff8f4bdbce9ab3e029a57f

            SHA1

            9bb77e887e128566fddf381a189d186acea0feab

            SHA256

            ddef74f8eea5d90c217b3d38044fffca29c23abb129d8bf133d13e448037b4e1

            SHA512

            2893601d43856cc62a739120cfc5cfbfa3e8c7818a6e13a9e8d2aee92f2268b1051328677784b29fd9e5b3737428fc9622e7d61ed748b49a5212eb1a0e930648

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5a30f6a883825465b574b69b959e6c60

            SHA1

            5e88e7cd33a3cbc856081ac86ec5e148e8cfc258

            SHA256

            449591360254c0cc6ee659735e8138826e763534852e24070b802ec453fdf6c7

            SHA512

            eb803e9637ae61d8a432fe48df922fe34b75eaf2261562b3839b4b3cd30e7da00954344e0aea4037a465606fd35f56b0244c92fe8f6dd7e1b2d0ad47ecf251b1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5a30f6a883825465b574b69b959e6c60

            SHA1

            5e88e7cd33a3cbc856081ac86ec5e148e8cfc258

            SHA256

            449591360254c0cc6ee659735e8138826e763534852e24070b802ec453fdf6c7

            SHA512

            eb803e9637ae61d8a432fe48df922fe34b75eaf2261562b3839b4b3cd30e7da00954344e0aea4037a465606fd35f56b0244c92fe8f6dd7e1b2d0ad47ecf251b1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5a30f6a883825465b574b69b959e6c60

            SHA1

            5e88e7cd33a3cbc856081ac86ec5e148e8cfc258

            SHA256

            449591360254c0cc6ee659735e8138826e763534852e24070b802ec453fdf6c7

            SHA512

            eb803e9637ae61d8a432fe48df922fe34b75eaf2261562b3839b4b3cd30e7da00954344e0aea4037a465606fd35f56b0244c92fe8f6dd7e1b2d0ad47ecf251b1

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            70edfb080c7d3ac2420e3859b073681e

            SHA1

            c4a0fb16cb11aeccdefdd62afcf2a7ef9bf7fd6f

            SHA256

            89942ed98b1eb150667b7f1e479a5f0452913d0628bd7c15a66bca7c8758fac0

            SHA512

            d96c519eeb48d80a088f114d8aa957fec71ee99d5e738485188a7d7a532d5f964f79c540344f0d6be58ddc11edf453881360284ae540233c0fd7b06a0cd25628

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            70edfb080c7d3ac2420e3859b073681e

            SHA1

            c4a0fb16cb11aeccdefdd62afcf2a7ef9bf7fd6f

            SHA256

            89942ed98b1eb150667b7f1e479a5f0452913d0628bd7c15a66bca7c8758fac0

            SHA512

            d96c519eeb48d80a088f114d8aa957fec71ee99d5e738485188a7d7a532d5f964f79c540344f0d6be58ddc11edf453881360284ae540233c0fd7b06a0cd25628

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1c52d49328e335d2eae0869d8acc2281

            SHA1

            ccbd5af0f5e54759a438ebd54f166c4766cdd920

            SHA256

            555bf6bb9b8f7c0480b4305ea86e00d58b38c431584f3ef7374ff5b0e702851f

            SHA512

            c401f9776d4d5e161618263d34066110ece82cd91ee9e57ca69dcbf3e93b4d20e264996b36c772cd4523b0a0ac938771d232192e1f6c1f79b110465ae12ebe67

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1c52d49328e335d2eae0869d8acc2281

            SHA1

            ccbd5af0f5e54759a438ebd54f166c4766cdd920

            SHA256

            555bf6bb9b8f7c0480b4305ea86e00d58b38c431584f3ef7374ff5b0e702851f

            SHA512

            c401f9776d4d5e161618263d34066110ece82cd91ee9e57ca69dcbf3e93b4d20e264996b36c772cd4523b0a0ac938771d232192e1f6c1f79b110465ae12ebe67

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1c52d49328e335d2eae0869d8acc2281

            SHA1

            ccbd5af0f5e54759a438ebd54f166c4766cdd920

            SHA256

            555bf6bb9b8f7c0480b4305ea86e00d58b38c431584f3ef7374ff5b0e702851f

            SHA512

            c401f9776d4d5e161618263d34066110ece82cd91ee9e57ca69dcbf3e93b4d20e264996b36c772cd4523b0a0ac938771d232192e1f6c1f79b110465ae12ebe67

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cdbd0c8312958b1c5f879b46ac73caa9

            SHA1

            897ae10cb366a20ba33922f3dddd548710d8347e

            SHA256

            99ddaa4ba09f7ea500da12ffbaf43742c72cf26bc095234f174bdcff8521de1e

            SHA512

            7a278a682f6dbdedc43ca6032d782d4960564491fe9a921ee1d0afc729ad887e32f29eb9a110c94c6b42ff33a4ea664b9ca613296a8bf224e3cc4c96b0ff1429

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cdbd0c8312958b1c5f879b46ac73caa9

            SHA1

            897ae10cb366a20ba33922f3dddd548710d8347e

            SHA256

            99ddaa4ba09f7ea500da12ffbaf43742c72cf26bc095234f174bdcff8521de1e

            SHA512

            7a278a682f6dbdedc43ca6032d782d4960564491fe9a921ee1d0afc729ad887e32f29eb9a110c94c6b42ff33a4ea664b9ca613296a8bf224e3cc4c96b0ff1429

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cdbd0c8312958b1c5f879b46ac73caa9

            SHA1

            897ae10cb366a20ba33922f3dddd548710d8347e

            SHA256

            99ddaa4ba09f7ea500da12ffbaf43742c72cf26bc095234f174bdcff8521de1e

            SHA512

            7a278a682f6dbdedc43ca6032d782d4960564491fe9a921ee1d0afc729ad887e32f29eb9a110c94c6b42ff33a4ea664b9ca613296a8bf224e3cc4c96b0ff1429

          • memory/364-136-0x0000000000000000-mapping.dmp

          • memory/1228-164-0x0000000000000000-mapping.dmp

          • memory/1512-158-0x0000000000000000-mapping.dmp

          • memory/1620-146-0x0000000000000000-mapping.dmp

          • memory/2356-135-0x0000000000000000-mapping.dmp

          • memory/2784-141-0x0000000000000000-mapping.dmp

          • memory/2896-152-0x0000000000000000-mapping.dmp

          • memory/3140-140-0x0000000000000000-mapping.dmp

          • memory/3420-165-0x0000000000000000-mapping.dmp

          • memory/3816-139-0x0000000000000000-mapping.dmp

          • memory/4044-157-0x0000000000000000-mapping.dmp