Analysis

  • max time kernel
    45s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    29-10-2022 14:00

General

  • Target

    bd4721aed88917a1488750f5757228c7826f7a95c2b1bc33112dcbf5e5e5352e.exe

  • Size

    774KB

  • MD5

    54a4846ebb29ca6c12ab74bf0f158513

  • SHA1

    ec90a3d526cc127cc99f4eac6147087456b287ca

  • SHA256

    bd4721aed88917a1488750f5757228c7826f7a95c2b1bc33112dcbf5e5e5352e

  • SHA512

    8229a1a0c7aa4487561d2c1833b7b20932a24245b5b709a558396be9e77ffacaffe4dec086510fa8cd0045eb5a11f77aa1d064d6aa82ac5ca9eadbe5ad36ed1c

  • SSDEEP

    12288:Q5oWQvEgKDTysAYClHCI5M8yWbqbwToZbTm34nvpndU56+btnVvFXpLM1LpNiNyH:ReDKlwWb4hTmovtdcJVv9dM1LSIQ6/j

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\bd4721aed88917a1488750f5757228c7826f7a95c2b1bc33112dcbf5e5e5352e.exe
    "C:\Users\Admin\AppData\Local\Temp\bd4721aed88917a1488750f5757228c7826f7a95c2b1bc33112dcbf5e5e5352e.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:1368
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1984
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1504
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:624
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:336
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1744
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1156
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1944
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1476
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1824
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1012
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1876
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:764

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d2492b1139bf3c88053d20c1f54ac9f5

            SHA1

            e4fd4c98d8e5cbd3bce7f1a8b00c533ee0b76304

            SHA256

            4a34f69b5d5e031a53fbb1b2bfca747296fb384beacc63b504ad5cdf9d26b680

            SHA512

            1ff13e797693b67d96bee194a85cd5c9f0941ebde37c03ac2d7ca631c4bd1c783422fc62214df175697ce054902ce797ea22d5ee4067afcbd1ecb8e1c0142874

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            6be2f237583b9ea2df5b68e439de5fa1

            SHA1

            9fba1b5adc74d6f187bfe87883bafc9c179afdb9

            SHA256

            c267aad36f028af222ab904219c69b446f3ff10946706c3e59b9823cfadd1ebd

            SHA512

            f2ff280dad7a0e1c57d8e70f208af0bfa8e671c50a6cdfca0d6e24a428fd26ab350d30c359f8074815276150c3a2a909dd1795107d1de20ab08b33028fc697a6

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            01df30ee642df1e9f645886c50b72b78

            SHA1

            7c365a9ea473434d8b74bbc1107bc7d45a582224

            SHA256

            6e36a4e35a01848e973cb6593565e640114d67eb2ed3d5a64af8a16290e0f54a

            SHA512

            6a06a306f64f9ce13fd23e2b8e65ede95ec46ed399f5458fd4ba8401d165f18a4c8b8555c3578f88de4927aa8b1272f229f7a7bdea00b24d3ba46bf4213edeea

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            341KB

            MD5

            5d92501b6c6cad6d9f06df463b6df5ea

            SHA1

            1c18678cff5c3e8239eeb0d68e5ced7590f7c304

            SHA256

            2df2338180a3412e9f5cccc0849cf27276fbbf99da9975f6a3a848959d2003f4

            SHA512

            c2532e32d18cfe0cd15ef68afe33bf9b69766241b309694156cf2f173cfde0501410cb0df07e988b098c4fe7f88f3b0313658b29665576ca512d4335f9bfecac

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            341KB

            MD5

            5d92501b6c6cad6d9f06df463b6df5ea

            SHA1

            1c18678cff5c3e8239eeb0d68e5ced7590f7c304

            SHA256

            2df2338180a3412e9f5cccc0849cf27276fbbf99da9975f6a3a848959d2003f4

            SHA512

            c2532e32d18cfe0cd15ef68afe33bf9b69766241b309694156cf2f173cfde0501410cb0df07e988b098c4fe7f88f3b0313658b29665576ca512d4335f9bfecac

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            7f141ec0b9790eb848ba4109e97f0bae

            SHA1

            02e8b0e8e585a821852d08ec90e1815e240c7aae

            SHA256

            ab7256227a80522e6a0b6c073950958e06d241e2647e9197c80ede1c257f305f

            SHA512

            ea8a1d6849edf78344c6a901266e1346d9c27d3d5a5108c8172ca8b65bf47b8ca26e0de29d432db250058a054c9fde3a43e9b9023740df863490b11ef3498231

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            7f141ec0b9790eb848ba4109e97f0bae

            SHA1

            02e8b0e8e585a821852d08ec90e1815e240c7aae

            SHA256

            ab7256227a80522e6a0b6c073950958e06d241e2647e9197c80ede1c257f305f

            SHA512

            ea8a1d6849edf78344c6a901266e1346d9c27d3d5a5108c8172ca8b65bf47b8ca26e0de29d432db250058a054c9fde3a43e9b9023740df863490b11ef3498231

          • \Users\Admin\AppData\Local\Temp\nst2A7D.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst2A7D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2A7D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2A7D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2A7D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d2492b1139bf3c88053d20c1f54ac9f5

            SHA1

            e4fd4c98d8e5cbd3bce7f1a8b00c533ee0b76304

            SHA256

            4a34f69b5d5e031a53fbb1b2bfca747296fb384beacc63b504ad5cdf9d26b680

            SHA512

            1ff13e797693b67d96bee194a85cd5c9f0941ebde37c03ac2d7ca631c4bd1c783422fc62214df175697ce054902ce797ea22d5ee4067afcbd1ecb8e1c0142874

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d2492b1139bf3c88053d20c1f54ac9f5

            SHA1

            e4fd4c98d8e5cbd3bce7f1a8b00c533ee0b76304

            SHA256

            4a34f69b5d5e031a53fbb1b2bfca747296fb384beacc63b504ad5cdf9d26b680

            SHA512

            1ff13e797693b67d96bee194a85cd5c9f0941ebde37c03ac2d7ca631c4bd1c783422fc62214df175697ce054902ce797ea22d5ee4067afcbd1ecb8e1c0142874

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d2492b1139bf3c88053d20c1f54ac9f5

            SHA1

            e4fd4c98d8e5cbd3bce7f1a8b00c533ee0b76304

            SHA256

            4a34f69b5d5e031a53fbb1b2bfca747296fb384beacc63b504ad5cdf9d26b680

            SHA512

            1ff13e797693b67d96bee194a85cd5c9f0941ebde37c03ac2d7ca631c4bd1c783422fc62214df175697ce054902ce797ea22d5ee4067afcbd1ecb8e1c0142874

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            6be2f237583b9ea2df5b68e439de5fa1

            SHA1

            9fba1b5adc74d6f187bfe87883bafc9c179afdb9

            SHA256

            c267aad36f028af222ab904219c69b446f3ff10946706c3e59b9823cfadd1ebd

            SHA512

            f2ff280dad7a0e1c57d8e70f208af0bfa8e671c50a6cdfca0d6e24a428fd26ab350d30c359f8074815276150c3a2a909dd1795107d1de20ab08b33028fc697a6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            6be2f237583b9ea2df5b68e439de5fa1

            SHA1

            9fba1b5adc74d6f187bfe87883bafc9c179afdb9

            SHA256

            c267aad36f028af222ab904219c69b446f3ff10946706c3e59b9823cfadd1ebd

            SHA512

            f2ff280dad7a0e1c57d8e70f208af0bfa8e671c50a6cdfca0d6e24a428fd26ab350d30c359f8074815276150c3a2a909dd1795107d1de20ab08b33028fc697a6

          • \Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            01df30ee642df1e9f645886c50b72b78

            SHA1

            7c365a9ea473434d8b74bbc1107bc7d45a582224

            SHA256

            6e36a4e35a01848e973cb6593565e640114d67eb2ed3d5a64af8a16290e0f54a

            SHA512

            6a06a306f64f9ce13fd23e2b8e65ede95ec46ed399f5458fd4ba8401d165f18a4c8b8555c3578f88de4927aa8b1272f229f7a7bdea00b24d3ba46bf4213edeea

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            341KB

            MD5

            5d92501b6c6cad6d9f06df463b6df5ea

            SHA1

            1c18678cff5c3e8239eeb0d68e5ced7590f7c304

            SHA256

            2df2338180a3412e9f5cccc0849cf27276fbbf99da9975f6a3a848959d2003f4

            SHA512

            c2532e32d18cfe0cd15ef68afe33bf9b69766241b309694156cf2f173cfde0501410cb0df07e988b098c4fe7f88f3b0313658b29665576ca512d4335f9bfecac

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            7f141ec0b9790eb848ba4109e97f0bae

            SHA1

            02e8b0e8e585a821852d08ec90e1815e240c7aae

            SHA256

            ab7256227a80522e6a0b6c073950958e06d241e2647e9197c80ede1c257f305f

            SHA512

            ea8a1d6849edf78344c6a901266e1346d9c27d3d5a5108c8172ca8b65bf47b8ca26e0de29d432db250058a054c9fde3a43e9b9023740df863490b11ef3498231

          • memory/1368-54-0x0000000074E41000-0x0000000074E43000-memory.dmp

            Filesize

            8KB

          • memory/1368-59-0x0000000000330000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/1368-90-0x0000000000330000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB