Analysis

  • max time kernel
    79s
  • max time network
    144s
  • 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 10:52

General

  • Target

    b90abdb07d0fb623bd29268beef0bc843b0dd24caa720fad4253813f2003d7f0.exe

  • Size

    446KB

  • MD5

    d81b4705062057783a596edbda81b1e0

  • SHA1

    1abc353b0d8a24dae12dbd7d6198012d303642e3

  • SHA256

    b90abdb07d0fb623bd29268beef0bc843b0dd24caa720fad4253813f2003d7f0

  • SHA512

    ca449d42093c2b8317f9e9ca0a8eb665bbbf923f6ade519eade506aa7458ef6223beea653f400cf31912eafcb1758e7594413be0117175182383b96ce877267d

  • SSDEEP

    12288:Wet/kmejnqiiqDZtkZEWyRU40gB3OyPkCVdWBD5YDQ:WjqiDYZVyRj0iOyPzVs34Q

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\b90abdb07d0fb623bd29268beef0bc843b0dd24caa720fad4253813f2003d7f0.exe
    "C:\Users\Admin\AppData\Local\Temp\b90abdb07d0fb623bd29268beef0bc843b0dd24caa720fad4253813f2003d7f0.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:1352
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4460
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1768
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2408
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2392
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:404
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4584
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4828
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:756
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1440
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1456
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:380
          • 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:4352
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3460

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsmBF8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e17440f1279787ba21f6c834e386191a

            SHA1

            34c0505e594f236c83da36ba806bb02830b8e1ec

            SHA256

            4ec00dcfde61f5193bbc0bb01e9c3f853df42c3a0e1c31d92263f5617b715c4e

            SHA512

            e6859b0e77a34d2d0a7a828365157080378013886cae79f2fdf9ceb89529d29d3321bb0c0bb285753bc8db610d34f504970c38fa28b1b794d6cd7ef659df843d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e17440f1279787ba21f6c834e386191a

            SHA1

            34c0505e594f236c83da36ba806bb02830b8e1ec

            SHA256

            4ec00dcfde61f5193bbc0bb01e9c3f853df42c3a0e1c31d92263f5617b715c4e

            SHA512

            e6859b0e77a34d2d0a7a828365157080378013886cae79f2fdf9ceb89529d29d3321bb0c0bb285753bc8db610d34f504970c38fa28b1b794d6cd7ef659df843d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e17440f1279787ba21f6c834e386191a

            SHA1

            34c0505e594f236c83da36ba806bb02830b8e1ec

            SHA256

            4ec00dcfde61f5193bbc0bb01e9c3f853df42c3a0e1c31d92263f5617b715c4e

            SHA512

            e6859b0e77a34d2d0a7a828365157080378013886cae79f2fdf9ceb89529d29d3321bb0c0bb285753bc8db610d34f504970c38fa28b1b794d6cd7ef659df843d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e17440f1279787ba21f6c834e386191a

            SHA1

            34c0505e594f236c83da36ba806bb02830b8e1ec

            SHA256

            4ec00dcfde61f5193bbc0bb01e9c3f853df42c3a0e1c31d92263f5617b715c4e

            SHA512

            e6859b0e77a34d2d0a7a828365157080378013886cae79f2fdf9ceb89529d29d3321bb0c0bb285753bc8db610d34f504970c38fa28b1b794d6cd7ef659df843d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cbc646852b019c2f5b6a20bff4f24e87

            SHA1

            3298130fd9404631623ebea9ea44ca724993ff77

            SHA256

            f6a86fafbe04465c93315440f40c34d1c694a97246644164df2b204d71276609

            SHA512

            2d800644968dad3e6250751aa02ec2b8f50abf5c00f5eeba8e634e8e4d843d39419edab8b7330497e250fd019f01a8b46a02c0180e09e2e5f7c25d2116a01a4e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cbc646852b019c2f5b6a20bff4f24e87

            SHA1

            3298130fd9404631623ebea9ea44ca724993ff77

            SHA256

            f6a86fafbe04465c93315440f40c34d1c694a97246644164df2b204d71276609

            SHA512

            2d800644968dad3e6250751aa02ec2b8f50abf5c00f5eeba8e634e8e4d843d39419edab8b7330497e250fd019f01a8b46a02c0180e09e2e5f7c25d2116a01a4e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cbc646852b019c2f5b6a20bff4f24e87

            SHA1

            3298130fd9404631623ebea9ea44ca724993ff77

            SHA256

            f6a86fafbe04465c93315440f40c34d1c694a97246644164df2b204d71276609

            SHA512

            2d800644968dad3e6250751aa02ec2b8f50abf5c00f5eeba8e634e8e4d843d39419edab8b7330497e250fd019f01a8b46a02c0180e09e2e5f7c25d2116a01a4e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4d03529b657d74b96633b5ca7a6cb97d

            SHA1

            7d548ab4f1e6ffc8174a903888cba68c98ee817d

            SHA256

            95e3c511f00b5a02e94f69e3cb8181a6fa497890de8717b11017f4a8a320e1a4

            SHA512

            534778961d28afba9b53f1b92735022419cfa71a7db2232baca2c21fa11b791cc40ea549ef6dd00f3c12dd8f4d176fcc74d4ec558157b513114965efb871a681

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4d03529b657d74b96633b5ca7a6cb97d

            SHA1

            7d548ab4f1e6ffc8174a903888cba68c98ee817d

            SHA256

            95e3c511f00b5a02e94f69e3cb8181a6fa497890de8717b11017f4a8a320e1a4

            SHA512

            534778961d28afba9b53f1b92735022419cfa71a7db2232baca2c21fa11b791cc40ea549ef6dd00f3c12dd8f4d176fcc74d4ec558157b513114965efb871a681

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ab806d21730dcb305c3c52d24527e463

            SHA1

            fb0fc868c53f9fc4c17dc0a2beb3739b4774ddda

            SHA256

            5dfee4c1340224b8dd7d3cbe10e1c4eac52847c0d53456adcc6c22d46cb0aedc

            SHA512

            ab161b710aa4b3b6982792cac4acec90fdd4f5e7e802a1782bb3ac3d9c5700f96a0fb878990a4608c685d517db378e6a0a573a4001976e632ef8dcdfaeba7c54

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ab806d21730dcb305c3c52d24527e463

            SHA1

            fb0fc868c53f9fc4c17dc0a2beb3739b4774ddda

            SHA256

            5dfee4c1340224b8dd7d3cbe10e1c4eac52847c0d53456adcc6c22d46cb0aedc

            SHA512

            ab161b710aa4b3b6982792cac4acec90fdd4f5e7e802a1782bb3ac3d9c5700f96a0fb878990a4608c685d517db378e6a0a573a4001976e632ef8dcdfaeba7c54

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ab806d21730dcb305c3c52d24527e463

            SHA1

            fb0fc868c53f9fc4c17dc0a2beb3739b4774ddda

            SHA256

            5dfee4c1340224b8dd7d3cbe10e1c4eac52847c0d53456adcc6c22d46cb0aedc

            SHA512

            ab161b710aa4b3b6982792cac4acec90fdd4f5e7e802a1782bb3ac3d9c5700f96a0fb878990a4608c685d517db378e6a0a573a4001976e632ef8dcdfaeba7c54

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c95c30b06b9bcf69475781a231544150

            SHA1

            5d074cf683fde92a693c627ae5fad4b17c9ecc6b

            SHA256

            4ec7ded03f6e1f1a0219b1a3974c669e6ca16a97791a324a702b09b8d1dc1399

            SHA512

            1d1c9235496d55a1a39e3a050f0c23e9a9bf6fedf193f2ebd53b9a4f214e567349c08122acafc03703335d86b2aaa32eda8d7755744e3a726ecab2dedfc54852

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c95c30b06b9bcf69475781a231544150

            SHA1

            5d074cf683fde92a693c627ae5fad4b17c9ecc6b

            SHA256

            4ec7ded03f6e1f1a0219b1a3974c669e6ca16a97791a324a702b09b8d1dc1399

            SHA512

            1d1c9235496d55a1a39e3a050f0c23e9a9bf6fedf193f2ebd53b9a4f214e567349c08122acafc03703335d86b2aaa32eda8d7755744e3a726ecab2dedfc54852

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c95c30b06b9bcf69475781a231544150

            SHA1

            5d074cf683fde92a693c627ae5fad4b17c9ecc6b

            SHA256

            4ec7ded03f6e1f1a0219b1a3974c669e6ca16a97791a324a702b09b8d1dc1399

            SHA512

            1d1c9235496d55a1a39e3a050f0c23e9a9bf6fedf193f2ebd53b9a4f214e567349c08122acafc03703335d86b2aaa32eda8d7755744e3a726ecab2dedfc54852

          • memory/380-165-0x0000000000000000-mapping.dmp

          • memory/404-141-0x0000000000000000-mapping.dmp

          • memory/756-157-0x0000000000000000-mapping.dmp

          • memory/1440-158-0x0000000000000000-mapping.dmp

          • memory/1456-164-0x0000000000000000-mapping.dmp

          • memory/1768-136-0x0000000000000000-mapping.dmp

          • memory/2392-140-0x0000000000000000-mapping.dmp

          • memory/2408-139-0x0000000000000000-mapping.dmp

          • memory/4460-135-0x0000000000000000-mapping.dmp

          • memory/4584-146-0x0000000000000000-mapping.dmp

          • memory/4828-152-0x0000000000000000-mapping.dmp