Analysis

  • max time kernel
    39s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:19

General

  • Target

    8f0182d3d49f72149305c84bf4d92f5fb2d0e82fd8026b078ce42f684b96e2fe.exe

  • Size

    603KB

  • MD5

    38af74c52089b072ed60810ecb1f093a

  • SHA1

    d523cc8810450740c69013d6434bc6eb6d7035b0

  • SHA256

    8f0182d3d49f72149305c84bf4d92f5fb2d0e82fd8026b078ce42f684b96e2fe

  • SHA512

    a2b087b50db1510cb0609712a647898245150e1a631bcf159ed59a63e3211e14788bdceea00901ae44d1695c84bb5cb7234aaed9ab1fecdc7630efb657ff7c40

  • SSDEEP

    12288:KIny5DYTmI6yO9btPpxOyTcoWNLApFJKmmnoVS6Whl/FMfxf:MUTmhbtPsZAnJKU07RFMf5

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\8f0182d3d49f72149305c84bf4d92f5fb2d0e82fd8026b078ce42f684b96e2fe.exe
    "C:\Users\Admin\AppData\Local\Temp\8f0182d3d49f72149305c84bf4d92f5fb2d0e82fd8026b078ce42f684b96e2fe.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:2004
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1724
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1988
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1340
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1232
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1344
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:652
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1568
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1736
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2000
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1804
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1676
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1908
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1120

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a7b3bc85b5d0df0234f9699eb4f0ffc2

            SHA1

            736824f1964f834263bfbf64f6c27ec24ff3b2d4

            SHA256

            40af098a2d972cfdb60f0c43090781d66d65470bba8c91fd27a8b0bc8da8917c

            SHA512

            98f4651a2ce17d4a214aa2eebad23a9c9a0bd809c8aa51a7daf1260fa0cb10959de9a4b9d815c0d2501f3ef49a5361d335daeeaedbb2b089d67441f93ebeaaa5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6cbacf8a65e257dd0d3ab22611860e43

            SHA1

            bcfa5e184cc7fe0005887ff72896757461e9f77e

            SHA256

            ee6d2f82f58f750af4cba8356fd7f9ac9c3790dce1de5c7047fc8feda8f885ee

            SHA512

            2300cfda79a637b6c7d8b18d9759f25705e4418dd674a39876922d61f6b003e6d273d979464ec73849e20ff37c79cb21e45286731022d8cb1e58dcd394bd2640

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            756e142ba6e20e2566ebe4d17b6eafe6

            SHA1

            da2ca56179fd565863d73e83bba8cae7c295f6cd

            SHA256

            4c53fcd7b666b6db62c8c1b81984b4e449f4078a4efdca10298d257744c83c6c

            SHA512

            7b3e876326ad27df56c5f0ff3058936e891bd123f79986714c8f754804967b3859e151725d0af938267074cad29859d16629a5c5b392af284fbfc329e0464a8e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4ddc9d603e410e3e872a8d5c02e61e3b

            SHA1

            ac876cbb4dfbe8976adeddbec649fd6e2d94fe26

            SHA256

            acfec7a62293861a90c90114697ed360c01cf78b7800ad6a7a79bff4ec7197c0

            SHA512

            16c88a03edf451b1836281b9b32ef0b7e8bd383f4c7ae0e379c855f09ae9e82bfc2420fb004df68350248641bdd939f66efe63061b69381424fc351f63569c2d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4ddc9d603e410e3e872a8d5c02e61e3b

            SHA1

            ac876cbb4dfbe8976adeddbec649fd6e2d94fe26

            SHA256

            acfec7a62293861a90c90114697ed360c01cf78b7800ad6a7a79bff4ec7197c0

            SHA512

            16c88a03edf451b1836281b9b32ef0b7e8bd383f4c7ae0e379c855f09ae9e82bfc2420fb004df68350248641bdd939f66efe63061b69381424fc351f63569c2d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            549fb1f2cf6668f2663428111070c657

            SHA1

            2cc20da45da2e98c47fc479f5d77ea4c1b47303f

            SHA256

            74609d515f3e276443dcf15212dd864cf8f9a3e9642a2779b7621e0ee3e0e080

            SHA512

            40b91543319461c3e70b576c1ad07ea482dad8cc8bc963c637c4994b25751ddc8f00a5527192d3d1d53ea7e91c85a60813b15e19ff4f9914857765079e0e12cd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            549fb1f2cf6668f2663428111070c657

            SHA1

            2cc20da45da2e98c47fc479f5d77ea4c1b47303f

            SHA256

            74609d515f3e276443dcf15212dd864cf8f9a3e9642a2779b7621e0ee3e0e080

            SHA512

            40b91543319461c3e70b576c1ad07ea482dad8cc8bc963c637c4994b25751ddc8f00a5527192d3d1d53ea7e91c85a60813b15e19ff4f9914857765079e0e12cd

          • \Users\Admin\AppData\Local\Temp\nso66A.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso66A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso66A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso66A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso66A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a7b3bc85b5d0df0234f9699eb4f0ffc2

            SHA1

            736824f1964f834263bfbf64f6c27ec24ff3b2d4

            SHA256

            40af098a2d972cfdb60f0c43090781d66d65470bba8c91fd27a8b0bc8da8917c

            SHA512

            98f4651a2ce17d4a214aa2eebad23a9c9a0bd809c8aa51a7daf1260fa0cb10959de9a4b9d815c0d2501f3ef49a5361d335daeeaedbb2b089d67441f93ebeaaa5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a7b3bc85b5d0df0234f9699eb4f0ffc2

            SHA1

            736824f1964f834263bfbf64f6c27ec24ff3b2d4

            SHA256

            40af098a2d972cfdb60f0c43090781d66d65470bba8c91fd27a8b0bc8da8917c

            SHA512

            98f4651a2ce17d4a214aa2eebad23a9c9a0bd809c8aa51a7daf1260fa0cb10959de9a4b9d815c0d2501f3ef49a5361d335daeeaedbb2b089d67441f93ebeaaa5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a7b3bc85b5d0df0234f9699eb4f0ffc2

            SHA1

            736824f1964f834263bfbf64f6c27ec24ff3b2d4

            SHA256

            40af098a2d972cfdb60f0c43090781d66d65470bba8c91fd27a8b0bc8da8917c

            SHA512

            98f4651a2ce17d4a214aa2eebad23a9c9a0bd809c8aa51a7daf1260fa0cb10959de9a4b9d815c0d2501f3ef49a5361d335daeeaedbb2b089d67441f93ebeaaa5

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6cbacf8a65e257dd0d3ab22611860e43

            SHA1

            bcfa5e184cc7fe0005887ff72896757461e9f77e

            SHA256

            ee6d2f82f58f750af4cba8356fd7f9ac9c3790dce1de5c7047fc8feda8f885ee

            SHA512

            2300cfda79a637b6c7d8b18d9759f25705e4418dd674a39876922d61f6b003e6d273d979464ec73849e20ff37c79cb21e45286731022d8cb1e58dcd394bd2640

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            6cbacf8a65e257dd0d3ab22611860e43

            SHA1

            bcfa5e184cc7fe0005887ff72896757461e9f77e

            SHA256

            ee6d2f82f58f750af4cba8356fd7f9ac9c3790dce1de5c7047fc8feda8f885ee

            SHA512

            2300cfda79a637b6c7d8b18d9759f25705e4418dd674a39876922d61f6b003e6d273d979464ec73849e20ff37c79cb21e45286731022d8cb1e58dcd394bd2640

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            756e142ba6e20e2566ebe4d17b6eafe6

            SHA1

            da2ca56179fd565863d73e83bba8cae7c295f6cd

            SHA256

            4c53fcd7b666b6db62c8c1b81984b4e449f4078a4efdca10298d257744c83c6c

            SHA512

            7b3e876326ad27df56c5f0ff3058936e891bd123f79986714c8f754804967b3859e151725d0af938267074cad29859d16629a5c5b392af284fbfc329e0464a8e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4ddc9d603e410e3e872a8d5c02e61e3b

            SHA1

            ac876cbb4dfbe8976adeddbec649fd6e2d94fe26

            SHA256

            acfec7a62293861a90c90114697ed360c01cf78b7800ad6a7a79bff4ec7197c0

            SHA512

            16c88a03edf451b1836281b9b32ef0b7e8bd383f4c7ae0e379c855f09ae9e82bfc2420fb004df68350248641bdd939f66efe63061b69381424fc351f63569c2d

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            549fb1f2cf6668f2663428111070c657

            SHA1

            2cc20da45da2e98c47fc479f5d77ea4c1b47303f

            SHA256

            74609d515f3e276443dcf15212dd864cf8f9a3e9642a2779b7621e0ee3e0e080

            SHA512

            40b91543319461c3e70b576c1ad07ea482dad8cc8bc963c637c4994b25751ddc8f00a5527192d3d1d53ea7e91c85a60813b15e19ff4f9914857765079e0e12cd

          • memory/652-70-0x0000000000000000-mapping.dmp

          • memory/1232-62-0x0000000000000000-mapping.dmp

          • memory/1340-61-0x0000000000000000-mapping.dmp

          • memory/1344-64-0x0000000000000000-mapping.dmp

          • memory/1568-76-0x0000000000000000-mapping.dmp

          • memory/1676-87-0x0000000000000000-mapping.dmp

          • memory/1724-57-0x0000000000000000-mapping.dmp

          • memory/1736-80-0x0000000000000000-mapping.dmp

          • memory/1804-86-0x0000000000000000-mapping.dmp

          • memory/1988-58-0x0000000000000000-mapping.dmp

          • memory/2000-81-0x0000000000000000-mapping.dmp

          • memory/2004-54-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

            Filesize

            8KB

          • memory/2004-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2004-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB