Analysis

  • max time kernel
    42s
  • 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

    8e8de13c8a74e11548d48169f297bf24768fe2a98b8e62b63c12e25993dd173d.exe

  • Size

    602KB

  • MD5

    c7d9d1d9fa9d4d16e42162f63c1d98c0

  • SHA1

    c646d586a45fa02ae375edcef8c26f92f7848aea

  • SHA256

    8e8de13c8a74e11548d48169f297bf24768fe2a98b8e62b63c12e25993dd173d

  • SHA512

    e5768ce12b2430ef6ccde3bb019d3de771b86f290c256f76f3dc495920c0d9b7a1e4aa73f005fd9b7199f93e7de6673a411b20fab79ecd50114cc2adec5bbbba

  • SSDEEP

    12288:ZIny5DYT09r7jxqOWx+NWVmKMp2sC/1zjRoNUYq:VUT0pO1m7p72oK7

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\8e8de13c8a74e11548d48169f297bf24768fe2a98b8e62b63c12e25993dd173d.exe
    "C:\Users\Admin\AppData\Local\Temp\8e8de13c8a74e11548d48169f297bf24768fe2a98b8e62b63c12e25993dd173d.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:1684
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1084
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1624
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2036
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1184
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1732
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:364
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:552
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2012
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1304
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1888
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1924
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:832
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1968

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9db3b443d2b0fe9e6dc546e4804f5983

            SHA1

            6522adbeb5eb0a52125d1eaaa419463f63a9b8cc

            SHA256

            287b9d56ee2d0ad5f15d8eba1ea3ec58b9a141c7180f0234cd017f901470c13d

            SHA512

            76046a4c9e80b4a6b0d587aa404c7ab7c7601b30e89ff9c8412a3f3dcda238403f8d269a9fe52fbe901456602ede846ee3812b2b9fcfa87a8cc2830a60d50112

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2f06d5c1f251645b618c6629ea962ddc

            SHA1

            21da36969b067d312fae848ce84b8c4db788915d

            SHA256

            e0540ca8a728973c4582029a85d5549ff13f339212e818ae7399e8155ee6edfb

            SHA512

            ed5189dba22f928a50ff885b1f534244baa81148f828535c2bac149f2216459d192a8d659959171d74db4331e248caca53bb3a1685f38095910b78214bbcb6a7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a933397cfedee6ac1297f60063222bcc

            SHA1

            9ee6d2f453bdae424da537bfd90925392e7d0650

            SHA256

            9f2f50dc896ab776eac31cb53c7c934e5a8e1c8f44ae067c58892e9e575ab416

            SHA512

            688c4c99c3187117da5177fcb1ef9b0d887a044e07e263d70c9dab1c44823f37fbcc6b5d8daa0edb5513a629af5e151bd91c211400179698dab37d9877108a1e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            816ba482dad1a3acfc50bba2425df046

            SHA1

            7801385d2ac71450ee4676a858bf5dce3aabefdd

            SHA256

            0afbf0d9da3b5b758a48f01f07a22b7ea594c5172cccc2e51bddf6d82bcf15c0

            SHA512

            4917bb6d57215bfe1232d0d43a0662f2074968eea15f81a912f6e8577e9f7b452e87cf7b3deeb50c7c1fec18cca267215f7b6704af2af7687a32b8d8ff834e8b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            816ba482dad1a3acfc50bba2425df046

            SHA1

            7801385d2ac71450ee4676a858bf5dce3aabefdd

            SHA256

            0afbf0d9da3b5b758a48f01f07a22b7ea594c5172cccc2e51bddf6d82bcf15c0

            SHA512

            4917bb6d57215bfe1232d0d43a0662f2074968eea15f81a912f6e8577e9f7b452e87cf7b3deeb50c7c1fec18cca267215f7b6704af2af7687a32b8d8ff834e8b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            56e1c7376ab5f6b190ccd159b5c6d2a3

            SHA1

            1c6976d516a5a5335cebca772f1c70bb9f015035

            SHA256

            03aa6121b2c258ceb19b5d5a2de282a21d6538ea142c782daa87aab462f478dd

            SHA512

            b7ac9f7dec07f8cc0e18560b7bfd92f6b4a47a52dac5668aaef42fa4930f59031825ba422ba3b520cfb17bc36c2ab153aa6b65915ede8ba806eb9fe3f802a546

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            56e1c7376ab5f6b190ccd159b5c6d2a3

            SHA1

            1c6976d516a5a5335cebca772f1c70bb9f015035

            SHA256

            03aa6121b2c258ceb19b5d5a2de282a21d6538ea142c782daa87aab462f478dd

            SHA512

            b7ac9f7dec07f8cc0e18560b7bfd92f6b4a47a52dac5668aaef42fa4930f59031825ba422ba3b520cfb17bc36c2ab153aa6b65915ede8ba806eb9fe3f802a546

          • \Users\Admin\AppData\Local\Temp\nso88C.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso88C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso88C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso88C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso88C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9db3b443d2b0fe9e6dc546e4804f5983

            SHA1

            6522adbeb5eb0a52125d1eaaa419463f63a9b8cc

            SHA256

            287b9d56ee2d0ad5f15d8eba1ea3ec58b9a141c7180f0234cd017f901470c13d

            SHA512

            76046a4c9e80b4a6b0d587aa404c7ab7c7601b30e89ff9c8412a3f3dcda238403f8d269a9fe52fbe901456602ede846ee3812b2b9fcfa87a8cc2830a60d50112

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9db3b443d2b0fe9e6dc546e4804f5983

            SHA1

            6522adbeb5eb0a52125d1eaaa419463f63a9b8cc

            SHA256

            287b9d56ee2d0ad5f15d8eba1ea3ec58b9a141c7180f0234cd017f901470c13d

            SHA512

            76046a4c9e80b4a6b0d587aa404c7ab7c7601b30e89ff9c8412a3f3dcda238403f8d269a9fe52fbe901456602ede846ee3812b2b9fcfa87a8cc2830a60d50112

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9db3b443d2b0fe9e6dc546e4804f5983

            SHA1

            6522adbeb5eb0a52125d1eaaa419463f63a9b8cc

            SHA256

            287b9d56ee2d0ad5f15d8eba1ea3ec58b9a141c7180f0234cd017f901470c13d

            SHA512

            76046a4c9e80b4a6b0d587aa404c7ab7c7601b30e89ff9c8412a3f3dcda238403f8d269a9fe52fbe901456602ede846ee3812b2b9fcfa87a8cc2830a60d50112

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2f06d5c1f251645b618c6629ea962ddc

            SHA1

            21da36969b067d312fae848ce84b8c4db788915d

            SHA256

            e0540ca8a728973c4582029a85d5549ff13f339212e818ae7399e8155ee6edfb

            SHA512

            ed5189dba22f928a50ff885b1f534244baa81148f828535c2bac149f2216459d192a8d659959171d74db4331e248caca53bb3a1685f38095910b78214bbcb6a7

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2f06d5c1f251645b618c6629ea962ddc

            SHA1

            21da36969b067d312fae848ce84b8c4db788915d

            SHA256

            e0540ca8a728973c4582029a85d5549ff13f339212e818ae7399e8155ee6edfb

            SHA512

            ed5189dba22f928a50ff885b1f534244baa81148f828535c2bac149f2216459d192a8d659959171d74db4331e248caca53bb3a1685f38095910b78214bbcb6a7

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a933397cfedee6ac1297f60063222bcc

            SHA1

            9ee6d2f453bdae424da537bfd90925392e7d0650

            SHA256

            9f2f50dc896ab776eac31cb53c7c934e5a8e1c8f44ae067c58892e9e575ab416

            SHA512

            688c4c99c3187117da5177fcb1ef9b0d887a044e07e263d70c9dab1c44823f37fbcc6b5d8daa0edb5513a629af5e151bd91c211400179698dab37d9877108a1e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            816ba482dad1a3acfc50bba2425df046

            SHA1

            7801385d2ac71450ee4676a858bf5dce3aabefdd

            SHA256

            0afbf0d9da3b5b758a48f01f07a22b7ea594c5172cccc2e51bddf6d82bcf15c0

            SHA512

            4917bb6d57215bfe1232d0d43a0662f2074968eea15f81a912f6e8577e9f7b452e87cf7b3deeb50c7c1fec18cca267215f7b6704af2af7687a32b8d8ff834e8b

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            56e1c7376ab5f6b190ccd159b5c6d2a3

            SHA1

            1c6976d516a5a5335cebca772f1c70bb9f015035

            SHA256

            03aa6121b2c258ceb19b5d5a2de282a21d6538ea142c782daa87aab462f478dd

            SHA512

            b7ac9f7dec07f8cc0e18560b7bfd92f6b4a47a52dac5668aaef42fa4930f59031825ba422ba3b520cfb17bc36c2ab153aa6b65915ede8ba806eb9fe3f802a546

          • memory/364-70-0x0000000000000000-mapping.dmp

          • memory/552-76-0x0000000000000000-mapping.dmp

          • memory/1084-57-0x0000000000000000-mapping.dmp

          • memory/1184-62-0x0000000000000000-mapping.dmp

          • memory/1304-81-0x0000000000000000-mapping.dmp

          • memory/1624-58-0x0000000000000000-mapping.dmp

          • memory/1684-54-0x0000000076401000-0x0000000076403000-memory.dmp

            Filesize

            8KB

          • memory/1684-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1684-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1732-64-0x0000000000000000-mapping.dmp

          • memory/1888-86-0x0000000000000000-mapping.dmp

          • memory/1924-87-0x0000000000000000-mapping.dmp

          • memory/2012-80-0x0000000000000000-mapping.dmp

          • memory/2036-61-0x0000000000000000-mapping.dmp