Analysis

  • max time kernel
    71s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:15

General

  • Target

    b301770c31dbd0bebe33e3cd8c227af013b05815f6957bdfe851f4c0303e93f0.exe

  • Size

    603KB

  • MD5

    e9ce8a3a192b355783fd1d81f7bc5c0b

  • SHA1

    1e33973df206d0fe0e65096eaadc487155c8895b

  • SHA256

    b301770c31dbd0bebe33e3cd8c227af013b05815f6957bdfe851f4c0303e93f0

  • SHA512

    c4cbdacb901805289ac2bfaa5b5191409be72038fbaa2b67aca2928185d0d325b09630adf40decd55912bd9ed3e747dcd3adce79920ddd952f97a2e6d0505a35

  • SSDEEP

    12288:bIny5DYT8mN+6wltptS+MYtWLujKct7+aRc9oI3qjRlVHAuAQCs8X:jUTN+6MZiGxB8aRct0RltJhCs8

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\b301770c31dbd0bebe33e3cd8c227af013b05815f6957bdfe851f4c0303e93f0.exe
    "C:\Users\Admin\AppData\Local\Temp\b301770c31dbd0bebe33e3cd8c227af013b05815f6957bdfe851f4c0303e93f0.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:2148
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2248
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2624
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4108
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1336
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3320
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2484
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2832
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1092
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1900
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4600
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3160
          • 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:4664
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4372

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDA98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f14f305d24eccaed9bfc0e6c99b43177

            SHA1

            36bfe0f4a08cf26f365fa089d46e67c4f98ebcc2

            SHA256

            a9f4869e3d9c04a41690d7f9bc346dff434ab8af8a6afd0bf311fb9c7d3feccd

            SHA512

            c1b417bac973be0ca49ec437d765d8fbe38f1d425cde0bb046a54742d49f4b4bb121cd1b3cc41bccfecd6a76af4f4deb3f92cb34747c1bd9bf039278e7d7d57b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f14f305d24eccaed9bfc0e6c99b43177

            SHA1

            36bfe0f4a08cf26f365fa089d46e67c4f98ebcc2

            SHA256

            a9f4869e3d9c04a41690d7f9bc346dff434ab8af8a6afd0bf311fb9c7d3feccd

            SHA512

            c1b417bac973be0ca49ec437d765d8fbe38f1d425cde0bb046a54742d49f4b4bb121cd1b3cc41bccfecd6a76af4f4deb3f92cb34747c1bd9bf039278e7d7d57b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f14f305d24eccaed9bfc0e6c99b43177

            SHA1

            36bfe0f4a08cf26f365fa089d46e67c4f98ebcc2

            SHA256

            a9f4869e3d9c04a41690d7f9bc346dff434ab8af8a6afd0bf311fb9c7d3feccd

            SHA512

            c1b417bac973be0ca49ec437d765d8fbe38f1d425cde0bb046a54742d49f4b4bb121cd1b3cc41bccfecd6a76af4f4deb3f92cb34747c1bd9bf039278e7d7d57b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f14f305d24eccaed9bfc0e6c99b43177

            SHA1

            36bfe0f4a08cf26f365fa089d46e67c4f98ebcc2

            SHA256

            a9f4869e3d9c04a41690d7f9bc346dff434ab8af8a6afd0bf311fb9c7d3feccd

            SHA512

            c1b417bac973be0ca49ec437d765d8fbe38f1d425cde0bb046a54742d49f4b4bb121cd1b3cc41bccfecd6a76af4f4deb3f92cb34747c1bd9bf039278e7d7d57b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6acd798a7fb47c1b6d369ba7638823d1

            SHA1

            33d749c0b7fcdc68f1d7eccdb125c081433e39c1

            SHA256

            98316da73666f0c9d9e26073af19f7a51e4beb1e406471e54e07ebaec1dc1dc5

            SHA512

            8228c773dbf99c7274e92234f97944d982b2d2d5207de2dd3e282946ab1b130b3849cc24901d2506b887219ef14a9e49f8ce94474712bf2d5fe599dbb90d9cea

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6acd798a7fb47c1b6d369ba7638823d1

            SHA1

            33d749c0b7fcdc68f1d7eccdb125c081433e39c1

            SHA256

            98316da73666f0c9d9e26073af19f7a51e4beb1e406471e54e07ebaec1dc1dc5

            SHA512

            8228c773dbf99c7274e92234f97944d982b2d2d5207de2dd3e282946ab1b130b3849cc24901d2506b887219ef14a9e49f8ce94474712bf2d5fe599dbb90d9cea

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6acd798a7fb47c1b6d369ba7638823d1

            SHA1

            33d749c0b7fcdc68f1d7eccdb125c081433e39c1

            SHA256

            98316da73666f0c9d9e26073af19f7a51e4beb1e406471e54e07ebaec1dc1dc5

            SHA512

            8228c773dbf99c7274e92234f97944d982b2d2d5207de2dd3e282946ab1b130b3849cc24901d2506b887219ef14a9e49f8ce94474712bf2d5fe599dbb90d9cea

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6490f323ad82caf91bf01b3a87f801d1

            SHA1

            cadf30476c81bec0059358e3409d6dfb71959c3f

            SHA256

            f5d6d87bd61e6c1c06deb1756cc373affb82616ef2da712730d7a1ad0e5145b6

            SHA512

            78ffe011c9c0554d709168eb9284c35720ca9b80dc3b360a1366a7055e43c0ebb24dfda34cb916c7e19e5bbb43544ad2cfbb34684561bed44d2aee4c911edbc9

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6490f323ad82caf91bf01b3a87f801d1

            SHA1

            cadf30476c81bec0059358e3409d6dfb71959c3f

            SHA256

            f5d6d87bd61e6c1c06deb1756cc373affb82616ef2da712730d7a1ad0e5145b6

            SHA512

            78ffe011c9c0554d709168eb9284c35720ca9b80dc3b360a1366a7055e43c0ebb24dfda34cb916c7e19e5bbb43544ad2cfbb34684561bed44d2aee4c911edbc9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            98fa761712466d6b07674a6ec0b19963

            SHA1

            3a133ce784757e7664e8e5f37074a783ad458ff5

            SHA256

            f3527868f583b936253c6e2925780272a230108f6fb5c88ef1e3fa90f2ddcb8d

            SHA512

            1ff97ae5419dbf9cf4e578c9ed1774b223ce265d1d3c948342437fcae8e3baf8ca497e8e07c6ea42aee8ee1327fe56e8d3aca61f838afa374186842dd1f4562c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            98fa761712466d6b07674a6ec0b19963

            SHA1

            3a133ce784757e7664e8e5f37074a783ad458ff5

            SHA256

            f3527868f583b936253c6e2925780272a230108f6fb5c88ef1e3fa90f2ddcb8d

            SHA512

            1ff97ae5419dbf9cf4e578c9ed1774b223ce265d1d3c948342437fcae8e3baf8ca497e8e07c6ea42aee8ee1327fe56e8d3aca61f838afa374186842dd1f4562c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            98fa761712466d6b07674a6ec0b19963

            SHA1

            3a133ce784757e7664e8e5f37074a783ad458ff5

            SHA256

            f3527868f583b936253c6e2925780272a230108f6fb5c88ef1e3fa90f2ddcb8d

            SHA512

            1ff97ae5419dbf9cf4e578c9ed1774b223ce265d1d3c948342437fcae8e3baf8ca497e8e07c6ea42aee8ee1327fe56e8d3aca61f838afa374186842dd1f4562c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7719604a50d3c6bb4609b8ebb212e35c

            SHA1

            34ba993853f3a33f6786cb77741fd98a4a60c122

            SHA256

            cc335eac6c5d75e2f25260c5e9feee92cd9ac2d995402ffb012074ad0aec42c3

            SHA512

            b4b65da73663ef0d2c79ba9ab5cace641d9a33a4ca58ac3e46a1eb88fd5cca38b1388077510d3929046b4dfe39151732a33358909fc33f7c886f00c8536686c5

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7719604a50d3c6bb4609b8ebb212e35c

            SHA1

            34ba993853f3a33f6786cb77741fd98a4a60c122

            SHA256

            cc335eac6c5d75e2f25260c5e9feee92cd9ac2d995402ffb012074ad0aec42c3

            SHA512

            b4b65da73663ef0d2c79ba9ab5cace641d9a33a4ca58ac3e46a1eb88fd5cca38b1388077510d3929046b4dfe39151732a33358909fc33f7c886f00c8536686c5

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7719604a50d3c6bb4609b8ebb212e35c

            SHA1

            34ba993853f3a33f6786cb77741fd98a4a60c122

            SHA256

            cc335eac6c5d75e2f25260c5e9feee92cd9ac2d995402ffb012074ad0aec42c3

            SHA512

            b4b65da73663ef0d2c79ba9ab5cace641d9a33a4ca58ac3e46a1eb88fd5cca38b1388077510d3929046b4dfe39151732a33358909fc33f7c886f00c8536686c5

          • memory/1092-158-0x0000000000000000-mapping.dmp

          • memory/1336-141-0x0000000000000000-mapping.dmp

          • memory/1900-159-0x0000000000000000-mapping.dmp

          • memory/2148-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2148-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2248-136-0x0000000000000000-mapping.dmp

          • memory/2484-147-0x0000000000000000-mapping.dmp

          • memory/2624-137-0x0000000000000000-mapping.dmp

          • memory/2832-153-0x0000000000000000-mapping.dmp

          • memory/3160-166-0x0000000000000000-mapping.dmp

          • memory/3320-142-0x0000000000000000-mapping.dmp

          • memory/4108-140-0x0000000000000000-mapping.dmp

          • memory/4600-165-0x0000000000000000-mapping.dmp