Analysis

  • max time kernel
    43s
  • 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 10:10

General

  • Target

    db73537c0a628766b8b46de33a8a66a22f3d2b8677dae272c0cce7205762ed5d.exe

  • Size

    602KB

  • MD5

    6c06ddd1f18a70216efe116dae68f0d2

  • SHA1

    d4e9cd3bda01bc575d4b5cc95c3eb02e3c742e0c

  • SHA256

    db73537c0a628766b8b46de33a8a66a22f3d2b8677dae272c0cce7205762ed5d

  • SHA512

    5855c44d391c12629046d67687d82562a9966331e1d404b28cfba8978c808f4127728ad8a12aa47fd5fa5cf28bea42c6333cea226e4d9e7de5f44f1f1430bfbb

  • SSDEEP

    12288:gIny5DYTos1vgeDC9khcO0Zxm3yY9S2EK70Dmy+v6:eUTbdNmtZiZwKZv

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\db73537c0a628766b8b46de33a8a66a22f3d2b8677dae272c0cce7205762ed5d.exe
    "C:\Users\Admin\AppData\Local\Temp\db73537c0a628766b8b46de33a8a66a22f3d2b8677dae272c0cce7205762ed5d.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:2000
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1676
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1316
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1740
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1744
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:948
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1064
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1544
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1576
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1940
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1644
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:924
          • 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:1648

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a28a4ea2d9a217758531e0794f198e8

            SHA1

            8b3232b89db035bf24d88f6439f565f0fd305976

            SHA256

            2b0623f5c17685a5623870c7933542251545f6c00617d92268319d722507d787

            SHA512

            349fa36e7346f69c489f893c8d460a3369409323c99bc77924a1ae9590e353bb0ffc4e21dc758f534b4e318566ce23c473b171b9790f42d117a49918cfd19749

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            75bb1e04db907de9823d4da1b9843a56

            SHA1

            4df443a47e7d904bed55a75cf33a3d185f4c5723

            SHA256

            221d0aa4ac59f3ff7b4f13d38f8435739080e9a1edfa6ff9613a04f9cd9319df

            SHA512

            1d0ffc3540de0d6d4fbc45436567c925bc86db54b07d07abcd75a35f0ab197e961d277b2ff6cfb5c41deb941ab0c02cd943ebd31820dd66b3a2ee2a1f2e450b9

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            46001a3b7ee626d4691edfda10a4361c

            SHA1

            8f92c87863ad4e401e6ba8ce0a201c77ba80837c

            SHA256

            1e45596cd6ceaae6def343a5ee41714ac9978eedce214205dd8aed22d04ad8a5

            SHA512

            78ae2f1312d780bacc8edd086310822a1bd279738995a0337ee6938d9e6b3759663eac5bcebf7ea727ce057e2f79cc1bc76dc326cacd59dc4df691649b7d6725

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            df5a26592b4eaf68f9d2d205a16bd49f

            SHA1

            04098e8743e2a13b746fee4596ec276ee1cf5978

            SHA256

            34ee2ee9d13e3b7c3d174d607a6ba9c77df05ed30718b72cf33e737d29f88e3e

            SHA512

            2970a0bed3538ff24022efb1873a956afce66553d2b894c67b9aff61c1c3223488a6f2ceaea5ccca6c9dfdf5ed17d2709dddc2e5f8bd110391ca1b9b55c6a574

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            df5a26592b4eaf68f9d2d205a16bd49f

            SHA1

            04098e8743e2a13b746fee4596ec276ee1cf5978

            SHA256

            34ee2ee9d13e3b7c3d174d607a6ba9c77df05ed30718b72cf33e737d29f88e3e

            SHA512

            2970a0bed3538ff24022efb1873a956afce66553d2b894c67b9aff61c1c3223488a6f2ceaea5ccca6c9dfdf5ed17d2709dddc2e5f8bd110391ca1b9b55c6a574

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            50d9066ed2b001ae09a068155083ef78

            SHA1

            0d9e3d9b800619e732222db3a7f4eaf42e1b7e44

            SHA256

            df00849c82314678c55381312b0075f3e0aa673a2ed522bb289fe43dbe7affe1

            SHA512

            0bb07f01cbdf481dd8f710bd7806d6f65317724e0af588920e47639db0b01f01fd00c7c371bd3cb2c4bb980aafe67029af604f328966a86a47f512a34e16ed04

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            50d9066ed2b001ae09a068155083ef78

            SHA1

            0d9e3d9b800619e732222db3a7f4eaf42e1b7e44

            SHA256

            df00849c82314678c55381312b0075f3e0aa673a2ed522bb289fe43dbe7affe1

            SHA512

            0bb07f01cbdf481dd8f710bd7806d6f65317724e0af588920e47639db0b01f01fd00c7c371bd3cb2c4bb980aafe67029af604f328966a86a47f512a34e16ed04

          • \Users\Admin\AppData\Local\Temp\nsyF7E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF7E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a28a4ea2d9a217758531e0794f198e8

            SHA1

            8b3232b89db035bf24d88f6439f565f0fd305976

            SHA256

            2b0623f5c17685a5623870c7933542251545f6c00617d92268319d722507d787

            SHA512

            349fa36e7346f69c489f893c8d460a3369409323c99bc77924a1ae9590e353bb0ffc4e21dc758f534b4e318566ce23c473b171b9790f42d117a49918cfd19749

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a28a4ea2d9a217758531e0794f198e8

            SHA1

            8b3232b89db035bf24d88f6439f565f0fd305976

            SHA256

            2b0623f5c17685a5623870c7933542251545f6c00617d92268319d722507d787

            SHA512

            349fa36e7346f69c489f893c8d460a3369409323c99bc77924a1ae9590e353bb0ffc4e21dc758f534b4e318566ce23c473b171b9790f42d117a49918cfd19749

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a28a4ea2d9a217758531e0794f198e8

            SHA1

            8b3232b89db035bf24d88f6439f565f0fd305976

            SHA256

            2b0623f5c17685a5623870c7933542251545f6c00617d92268319d722507d787

            SHA512

            349fa36e7346f69c489f893c8d460a3369409323c99bc77924a1ae9590e353bb0ffc4e21dc758f534b4e318566ce23c473b171b9790f42d117a49918cfd19749

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            75bb1e04db907de9823d4da1b9843a56

            SHA1

            4df443a47e7d904bed55a75cf33a3d185f4c5723

            SHA256

            221d0aa4ac59f3ff7b4f13d38f8435739080e9a1edfa6ff9613a04f9cd9319df

            SHA512

            1d0ffc3540de0d6d4fbc45436567c925bc86db54b07d07abcd75a35f0ab197e961d277b2ff6cfb5c41deb941ab0c02cd943ebd31820dd66b3a2ee2a1f2e450b9

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            75bb1e04db907de9823d4da1b9843a56

            SHA1

            4df443a47e7d904bed55a75cf33a3d185f4c5723

            SHA256

            221d0aa4ac59f3ff7b4f13d38f8435739080e9a1edfa6ff9613a04f9cd9319df

            SHA512

            1d0ffc3540de0d6d4fbc45436567c925bc86db54b07d07abcd75a35f0ab197e961d277b2ff6cfb5c41deb941ab0c02cd943ebd31820dd66b3a2ee2a1f2e450b9

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            46001a3b7ee626d4691edfda10a4361c

            SHA1

            8f92c87863ad4e401e6ba8ce0a201c77ba80837c

            SHA256

            1e45596cd6ceaae6def343a5ee41714ac9978eedce214205dd8aed22d04ad8a5

            SHA512

            78ae2f1312d780bacc8edd086310822a1bd279738995a0337ee6938d9e6b3759663eac5bcebf7ea727ce057e2f79cc1bc76dc326cacd59dc4df691649b7d6725

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            df5a26592b4eaf68f9d2d205a16bd49f

            SHA1

            04098e8743e2a13b746fee4596ec276ee1cf5978

            SHA256

            34ee2ee9d13e3b7c3d174d607a6ba9c77df05ed30718b72cf33e737d29f88e3e

            SHA512

            2970a0bed3538ff24022efb1873a956afce66553d2b894c67b9aff61c1c3223488a6f2ceaea5ccca6c9dfdf5ed17d2709dddc2e5f8bd110391ca1b9b55c6a574

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            50d9066ed2b001ae09a068155083ef78

            SHA1

            0d9e3d9b800619e732222db3a7f4eaf42e1b7e44

            SHA256

            df00849c82314678c55381312b0075f3e0aa673a2ed522bb289fe43dbe7affe1

            SHA512

            0bb07f01cbdf481dd8f710bd7806d6f65317724e0af588920e47639db0b01f01fd00c7c371bd3cb2c4bb980aafe67029af604f328966a86a47f512a34e16ed04

          • memory/924-88-0x0000000000000000-mapping.dmp

          • memory/948-64-0x0000000000000000-mapping.dmp

          • memory/1064-71-0x0000000000000000-mapping.dmp

          • memory/1316-59-0x0000000000000000-mapping.dmp

          • memory/1544-77-0x0000000000000000-mapping.dmp

          • memory/1576-81-0x0000000000000000-mapping.dmp

          • memory/1644-87-0x0000000000000000-mapping.dmp

          • memory/1676-58-0x0000000000000000-mapping.dmp

          • memory/1740-61-0x0000000000000000-mapping.dmp

          • memory/1744-62-0x0000000000000000-mapping.dmp

          • memory/1940-82-0x0000000000000000-mapping.dmp

          • memory/2000-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

            Filesize

            8KB

          • memory/2000-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2000-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2000-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB