Analysis

  • max time kernel
    42s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:28

General

  • Target

    40bd428a38905e3f343028eb339ac37468a96a950389f96d603368fdaf764b94.exe

  • Size

    602KB

  • MD5

    9d090143a385773770a118f8fb21d727

  • SHA1

    ae0d0a7c5cea8274c1d77ea5ba73e21f9f2b1b66

  • SHA256

    40bd428a38905e3f343028eb339ac37468a96a950389f96d603368fdaf764b94

  • SHA512

    6d69d8f227b603fbde651a1008c5e9bd80adab988668cd8c56e54d01ceb398f4cc4c09c1092e0b9a6cbf4aa8b74bc06ceb2afa3862aa9c51c20ae8cf9f47d4be

  • SSDEEP

    12288:QIny5DYTNuqVSNG2vOOwxTho5AbbzbArKTo8a9T317TbQUtLUUh:uUTrVSNLOOD6bncrKTNa9hPHtgU

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\40bd428a38905e3f343028eb339ac37468a96a950389f96d603368fdaf764b94.exe
    "C:\Users\Admin\AppData\Local\Temp\40bd428a38905e3f343028eb339ac37468a96a950389f96d603368fdaf764b94.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:1688
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:916
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1552
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1556
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1416
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1412
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:580
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1748
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1904
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:540
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1184
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1436
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1672
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1988

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cf42bc80dd9760d8fcaad14e8a31f078

            SHA1

            35063d1e54fd1576535caa7c04e3aadc028d8096

            SHA256

            e5bd3e9ef3349b83c3beecb8ae811e600c6a27b762d3cd72b603c65e8a4bd6ee

            SHA512

            8d70a4f34b2b41de42b46b89bec50421d4d6fb6df4962571fe50fd6e98cdfb2a0bf8a93ff66e1dc96ace734abb1e678ec0148463b3f943fcddca99923b18a3f4

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a7c97aeca0a082a5a060a05898c81f78

            SHA1

            0d1f0470960a6d657ff347349ca8ab53e3ee6b6c

            SHA256

            7db80e7bd0fcac9d8f0f9df03956b28ef9a3a73882a65cfa9d43f514947aa188

            SHA512

            10a659d334022247403b97ee604c314da3cc9cb790d63ffd4b0af21ce72dc8dff5da5c6450f067f4e3021ee413bba194c97fd21a9076f7bfb76ebdb7882b2441

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b57c4f7ad38b832dbe25dbb1cb283e27

            SHA1

            c88764898e56f9a8058c487ec1774e66586c9c6e

            SHA256

            5674a9541c885e5740288f02642cc3414590ad1c6c56fd5ed966d82a1d7e43fe

            SHA512

            c3a5b0e7038b3480c3372454e0f450499864fe6695a7b83cbb39ec372048ad5540f63799aef6990f95b5368a9e6ee5c4355e9bf568d26984d111128d69e9db61

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c5bc96c9c71ba4c12560527d5a5a5e88

            SHA1

            b51246d89cb51b4ee24c089e53e4c6b6f0456079

            SHA256

            5c863032ca6555476157b1475ae063518bdd4e60a4b5e46cd1efc64e59a129b0

            SHA512

            7eba90f34dc0e59ddddfdc74503691676e0c01c8b2799547768d722d19c44b160cac2da37105b73b8147b25b21fe626eac51fd5bd7352c167427a9b313ab6d69

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c5bc96c9c71ba4c12560527d5a5a5e88

            SHA1

            b51246d89cb51b4ee24c089e53e4c6b6f0456079

            SHA256

            5c863032ca6555476157b1475ae063518bdd4e60a4b5e46cd1efc64e59a129b0

            SHA512

            7eba90f34dc0e59ddddfdc74503691676e0c01c8b2799547768d722d19c44b160cac2da37105b73b8147b25b21fe626eac51fd5bd7352c167427a9b313ab6d69

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            624bd633476034bce29cdf81c0714ed3

            SHA1

            f7ccfdff79ecd70a78efdb6e9050be50b4804580

            SHA256

            8492430cb5d2e34a8ac08565cfe5558b38a7d509d72e9b7d9e7bb94b6a2a328d

            SHA512

            cd1bd71c7ff3422b532312d864fd2e1f1cf83b812702c041da2a88a6a55972f7287185b43c655be72a5d01dfa7a94bfd57d451b18d8cabe27de2769b6be9f7dd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            624bd633476034bce29cdf81c0714ed3

            SHA1

            f7ccfdff79ecd70a78efdb6e9050be50b4804580

            SHA256

            8492430cb5d2e34a8ac08565cfe5558b38a7d509d72e9b7d9e7bb94b6a2a328d

            SHA512

            cd1bd71c7ff3422b532312d864fd2e1f1cf83b812702c041da2a88a6a55972f7287185b43c655be72a5d01dfa7a94bfd57d451b18d8cabe27de2769b6be9f7dd

          • \Users\Admin\AppData\Local\Temp\nst37D.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst37D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst37D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst37D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst37D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cf42bc80dd9760d8fcaad14e8a31f078

            SHA1

            35063d1e54fd1576535caa7c04e3aadc028d8096

            SHA256

            e5bd3e9ef3349b83c3beecb8ae811e600c6a27b762d3cd72b603c65e8a4bd6ee

            SHA512

            8d70a4f34b2b41de42b46b89bec50421d4d6fb6df4962571fe50fd6e98cdfb2a0bf8a93ff66e1dc96ace734abb1e678ec0148463b3f943fcddca99923b18a3f4

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cf42bc80dd9760d8fcaad14e8a31f078

            SHA1

            35063d1e54fd1576535caa7c04e3aadc028d8096

            SHA256

            e5bd3e9ef3349b83c3beecb8ae811e600c6a27b762d3cd72b603c65e8a4bd6ee

            SHA512

            8d70a4f34b2b41de42b46b89bec50421d4d6fb6df4962571fe50fd6e98cdfb2a0bf8a93ff66e1dc96ace734abb1e678ec0148463b3f943fcddca99923b18a3f4

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cf42bc80dd9760d8fcaad14e8a31f078

            SHA1

            35063d1e54fd1576535caa7c04e3aadc028d8096

            SHA256

            e5bd3e9ef3349b83c3beecb8ae811e600c6a27b762d3cd72b603c65e8a4bd6ee

            SHA512

            8d70a4f34b2b41de42b46b89bec50421d4d6fb6df4962571fe50fd6e98cdfb2a0bf8a93ff66e1dc96ace734abb1e678ec0148463b3f943fcddca99923b18a3f4

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a7c97aeca0a082a5a060a05898c81f78

            SHA1

            0d1f0470960a6d657ff347349ca8ab53e3ee6b6c

            SHA256

            7db80e7bd0fcac9d8f0f9df03956b28ef9a3a73882a65cfa9d43f514947aa188

            SHA512

            10a659d334022247403b97ee604c314da3cc9cb790d63ffd4b0af21ce72dc8dff5da5c6450f067f4e3021ee413bba194c97fd21a9076f7bfb76ebdb7882b2441

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a7c97aeca0a082a5a060a05898c81f78

            SHA1

            0d1f0470960a6d657ff347349ca8ab53e3ee6b6c

            SHA256

            7db80e7bd0fcac9d8f0f9df03956b28ef9a3a73882a65cfa9d43f514947aa188

            SHA512

            10a659d334022247403b97ee604c314da3cc9cb790d63ffd4b0af21ce72dc8dff5da5c6450f067f4e3021ee413bba194c97fd21a9076f7bfb76ebdb7882b2441

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b57c4f7ad38b832dbe25dbb1cb283e27

            SHA1

            c88764898e56f9a8058c487ec1774e66586c9c6e

            SHA256

            5674a9541c885e5740288f02642cc3414590ad1c6c56fd5ed966d82a1d7e43fe

            SHA512

            c3a5b0e7038b3480c3372454e0f450499864fe6695a7b83cbb39ec372048ad5540f63799aef6990f95b5368a9e6ee5c4355e9bf568d26984d111128d69e9db61

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c5bc96c9c71ba4c12560527d5a5a5e88

            SHA1

            b51246d89cb51b4ee24c089e53e4c6b6f0456079

            SHA256

            5c863032ca6555476157b1475ae063518bdd4e60a4b5e46cd1efc64e59a129b0

            SHA512

            7eba90f34dc0e59ddddfdc74503691676e0c01c8b2799547768d722d19c44b160cac2da37105b73b8147b25b21fe626eac51fd5bd7352c167427a9b313ab6d69

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            624bd633476034bce29cdf81c0714ed3

            SHA1

            f7ccfdff79ecd70a78efdb6e9050be50b4804580

            SHA256

            8492430cb5d2e34a8ac08565cfe5558b38a7d509d72e9b7d9e7bb94b6a2a328d

            SHA512

            cd1bd71c7ff3422b532312d864fd2e1f1cf83b812702c041da2a88a6a55972f7287185b43c655be72a5d01dfa7a94bfd57d451b18d8cabe27de2769b6be9f7dd

          • memory/540-82-0x0000000000000000-mapping.dmp

          • memory/580-70-0x0000000000000000-mapping.dmp

          • memory/916-57-0x0000000000000000-mapping.dmp

          • memory/1184-87-0x0000000000000000-mapping.dmp

          • memory/1412-64-0x0000000000000000-mapping.dmp

          • memory/1416-62-0x0000000000000000-mapping.dmp

          • memory/1436-88-0x0000000000000000-mapping.dmp

          • memory/1552-58-0x0000000000000000-mapping.dmp

          • memory/1556-61-0x0000000000000000-mapping.dmp

          • memory/1688-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1688-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

            Filesize

            8KB

          • memory/1688-79-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1688-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1748-76-0x0000000000000000-mapping.dmp

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