Analysis

  • max time kernel
    47s
  • max time network
    53s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    24/11/2022, 09:16

General

  • Target

    b6be1e56ed176921196cec5ef7163175177504c1a640f3e05f228fd2a50276b7.exe

  • Size

    673KB

  • MD5

    c97334e38e985e05e047607deeea0d3c

  • SHA1

    f2662f751a391ab3e121a531194c313bc64b60ed

  • SHA256

    b6be1e56ed176921196cec5ef7163175177504c1a640f3e05f228fd2a50276b7

  • SHA512

    0901a9d9414e3551428c3cf561622188b4af1557403cbb7347a4f43f68d88725cf6fea55f747d9002e97e1efd36f410e3b4fcf1427e1f0c5e81c7f593d4eac22

  • SSDEEP

    12288:f+1VlCxzXBInIv+iZXStVTKh3D8hX15yaOSB59mpRdqTZyC:UVIxy0hS/ToeX1Jn5ARAE

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\b6be1e56ed176921196cec5ef7163175177504c1a640f3e05f228fd2a50276b7.exe
    "C:\Users\Admin\AppData\Local\Temp\b6be1e56ed176921196cec5ef7163175177504c1a640f3e05f228fd2a50276b7.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:1364
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1232
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:996
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1732
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:660
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:544
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1068
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1360
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1900
          • 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:1688
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1908
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2004
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1300

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bcb70128aceb1b35983de0af899f2238

            SHA1

            7eff608697407439286af6ee64e822313921074b

            SHA256

            adf8a08b13608e3c65118d6b2f471f98e90362a366819b90fe21bfb1ac071cb9

            SHA512

            8ea67218c03a097910720ee68b6ec74b03f3ab3034bcb65836f0e15f2213105fd086d39728f3c91b602d6f78934f9b912ad451a815f8898f7635bcc238ef81d8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d47433c266f348244f3e9fcf5067b70f

            SHA1

            a351892eb6a4b537d2310d0055f73adce06ec7af

            SHA256

            ba433c9f5b6dc0b871016d68d69d63b18ba6c8fd966f85f81dc8d677d2b3192b

            SHA512

            fd7b3bda760b5b84ecb352203ed9c92a77303eb7c7c3d4043d98462e45f11b1987b8e487b0de63fd6b50c841fb2bc5073b9d77c66911c70c669d2356bd1067b3

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            1f08976c2aca2ddb95333154f9a4f13f

            SHA1

            d07d6fd692bcd43f80cacef3b4dd230b1e67fd54

            SHA256

            c33192a202ac61bdb286764f741803d7b9c311194ae292b5cacb128c3b25b83a

            SHA512

            44555b3f67fa40e1a2e64d3a8c76943697f58ad74b27bce914d15576c7410f42148a877c841e8b068dc9370814892e4318ce00cda0e117cfa1dd94ddf5999155

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fd628310f4e7c6dc42f555a98ee6a44b

            SHA1

            3c169146da546ed5b329aae2d3c41b6f26707e37

            SHA256

            040c14b97229701e6753747cd2f3f69dfb399cef0ab42e21ae569cad85e9a5d5

            SHA512

            8a538164edbf60443726a5a52e7435ba709272f5fb8960f6f0d71f548f5de0b81b1329cb1066bd5af7c78dcc3a6ee2ec08b00e9f9c4d22862fee5b16714b4736

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fd628310f4e7c6dc42f555a98ee6a44b

            SHA1

            3c169146da546ed5b329aae2d3c41b6f26707e37

            SHA256

            040c14b97229701e6753747cd2f3f69dfb399cef0ab42e21ae569cad85e9a5d5

            SHA512

            8a538164edbf60443726a5a52e7435ba709272f5fb8960f6f0d71f548f5de0b81b1329cb1066bd5af7c78dcc3a6ee2ec08b00e9f9c4d22862fee5b16714b4736

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            33cfca94255c4824384fce678616a239

            SHA1

            adfdb269c12405972debf09d8769364678c7b9b9

            SHA256

            f6fca7dbe082d43eb628b2203961103615c6e6fbd16b04b8f0c09f5262c7c606

            SHA512

            6fc81b172a55c9dfd546819d3f6fb8f0289a32a939c2ea3b8cca2be8b38cf97d1bce943f446feba3e1de47f04a0de645981cb0fb4004c1f4a488d910f2f0154a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            33cfca94255c4824384fce678616a239

            SHA1

            adfdb269c12405972debf09d8769364678c7b9b9

            SHA256

            f6fca7dbe082d43eb628b2203961103615c6e6fbd16b04b8f0c09f5262c7c606

            SHA512

            6fc81b172a55c9dfd546819d3f6fb8f0289a32a939c2ea3b8cca2be8b38cf97d1bce943f446feba3e1de47f04a0de645981cb0fb4004c1f4a488d910f2f0154a

          • \Users\Admin\AppData\Local\Temp\nsd3871.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd3871.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3871.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3871.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3871.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bcb70128aceb1b35983de0af899f2238

            SHA1

            7eff608697407439286af6ee64e822313921074b

            SHA256

            adf8a08b13608e3c65118d6b2f471f98e90362a366819b90fe21bfb1ac071cb9

            SHA512

            8ea67218c03a097910720ee68b6ec74b03f3ab3034bcb65836f0e15f2213105fd086d39728f3c91b602d6f78934f9b912ad451a815f8898f7635bcc238ef81d8

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bcb70128aceb1b35983de0af899f2238

            SHA1

            7eff608697407439286af6ee64e822313921074b

            SHA256

            adf8a08b13608e3c65118d6b2f471f98e90362a366819b90fe21bfb1ac071cb9

            SHA512

            8ea67218c03a097910720ee68b6ec74b03f3ab3034bcb65836f0e15f2213105fd086d39728f3c91b602d6f78934f9b912ad451a815f8898f7635bcc238ef81d8

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bcb70128aceb1b35983de0af899f2238

            SHA1

            7eff608697407439286af6ee64e822313921074b

            SHA256

            adf8a08b13608e3c65118d6b2f471f98e90362a366819b90fe21bfb1ac071cb9

            SHA512

            8ea67218c03a097910720ee68b6ec74b03f3ab3034bcb65836f0e15f2213105fd086d39728f3c91b602d6f78934f9b912ad451a815f8898f7635bcc238ef81d8

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d47433c266f348244f3e9fcf5067b70f

            SHA1

            a351892eb6a4b537d2310d0055f73adce06ec7af

            SHA256

            ba433c9f5b6dc0b871016d68d69d63b18ba6c8fd966f85f81dc8d677d2b3192b

            SHA512

            fd7b3bda760b5b84ecb352203ed9c92a77303eb7c7c3d4043d98462e45f11b1987b8e487b0de63fd6b50c841fb2bc5073b9d77c66911c70c669d2356bd1067b3

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d47433c266f348244f3e9fcf5067b70f

            SHA1

            a351892eb6a4b537d2310d0055f73adce06ec7af

            SHA256

            ba433c9f5b6dc0b871016d68d69d63b18ba6c8fd966f85f81dc8d677d2b3192b

            SHA512

            fd7b3bda760b5b84ecb352203ed9c92a77303eb7c7c3d4043d98462e45f11b1987b8e487b0de63fd6b50c841fb2bc5073b9d77c66911c70c669d2356bd1067b3

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            1f08976c2aca2ddb95333154f9a4f13f

            SHA1

            d07d6fd692bcd43f80cacef3b4dd230b1e67fd54

            SHA256

            c33192a202ac61bdb286764f741803d7b9c311194ae292b5cacb128c3b25b83a

            SHA512

            44555b3f67fa40e1a2e64d3a8c76943697f58ad74b27bce914d15576c7410f42148a877c841e8b068dc9370814892e4318ce00cda0e117cfa1dd94ddf5999155

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fd628310f4e7c6dc42f555a98ee6a44b

            SHA1

            3c169146da546ed5b329aae2d3c41b6f26707e37

            SHA256

            040c14b97229701e6753747cd2f3f69dfb399cef0ab42e21ae569cad85e9a5d5

            SHA512

            8a538164edbf60443726a5a52e7435ba709272f5fb8960f6f0d71f548f5de0b81b1329cb1066bd5af7c78dcc3a6ee2ec08b00e9f9c4d22862fee5b16714b4736

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            33cfca94255c4824384fce678616a239

            SHA1

            adfdb269c12405972debf09d8769364678c7b9b9

            SHA256

            f6fca7dbe082d43eb628b2203961103615c6e6fbd16b04b8f0c09f5262c7c606

            SHA512

            6fc81b172a55c9dfd546819d3f6fb8f0289a32a939c2ea3b8cca2be8b38cf97d1bce943f446feba3e1de47f04a0de645981cb0fb4004c1f4a488d910f2f0154a

          • memory/1364-54-0x0000000075091000-0x0000000075093000-memory.dmp

            Filesize

            8KB

          • memory/1364-55-0x0000000000350000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1364-90-0x0000000000350000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB