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 10:10

General

  • Target

    d91c4e1f188c0462f24e4db16af0ec5482a7b088fcd2094dbd87538ddc5def05.exe

  • Size

    603KB

  • MD5

    b80a29696d65f4ba7b096ed709c9b40a

  • SHA1

    f4e306e527dae7ac6ed5cbe88953cd8b4088c924

  • SHA256

    d91c4e1f188c0462f24e4db16af0ec5482a7b088fcd2094dbd87538ddc5def05

  • SHA512

    9fd1709199782ff85847048cdb764e91dfcf2242b1f60307a6735faf666f2b86726e8b7bde913d09323d996cf746f417bcac35c2fcef4e40b393bffa1210140a

  • SSDEEP

    12288:WIny5DYTfI55NAonZuv+nif/CwVWzAegPbxOIWfmW0:YUTfeMonZuvhf/vEAjbxti50

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\d91c4e1f188c0462f24e4db16af0ec5482a7b088fcd2094dbd87538ddc5def05.exe
    "C:\Users\Admin\AppData\Local\Temp\d91c4e1f188c0462f24e4db16af0ec5482a7b088fcd2094dbd87538ddc5def05.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:2036
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1740
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1892
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1216
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1876
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1804
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:892
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1944
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1888
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:528
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1784
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1780
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1756
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1248

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a8f55f801ededa8d25b12c13562cde0

            SHA1

            4bacbbd2a98c5582f360cf7d31e887debe0867a3

            SHA256

            ead9629f3ad3381ff51761a3946a73bf4caf77135d4598a5452eeeaa7fcbe2e9

            SHA512

            cf9282bdec5c57f11c36e3e7ad8cdcdcc9c8426759f9ad359aef39ade10acd8ca51b72834f0f9853a90b831f18ef2ff36ea142d1f365614f5b70deb55385a0da

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ebc2f49067b50fca066efbbc36364bf3

            SHA1

            c88958a292d0bf82eb4e9e4f73b5d66c8b841e83

            SHA256

            b93a44a8c210c0b15534934f32f22ae93e7214f99f85df8462d4d8c03970a38b

            SHA512

            a2437e289061903703e790d0fb41c1f30bd8525d6f7e43ed0cb1c248fdf1e8db47bbcfec3ffa50c2f58dd3ca36b0627df02d89fd03e298302122869f9aa498f0

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a19001c2dde8634ccda8e23ed69691de

            SHA1

            48d4bbbd995dddf7775a3bacc70308a70953b031

            SHA256

            79ea996b93790c62d23ea09fd7a06babbcf96de06d5f3c71b04b2a5f7320a0dd

            SHA512

            d36ef71d291101b6b7342c656397d0b98e15ff56ea35308778e93677fe4668b8c1e8cdb3b8912294065ca065a976d042653e4a771393a00ea506f3e404e9e15f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3c3e1ec023b33059988ebf3bb1bd7e2b

            SHA1

            a22429e964c1cbbe356ea3612103954cb48193ca

            SHA256

            e12a37fcd9eb6030fb032d2d5b717a03caeb391e30fdae1a04a75e3b918c1fe5

            SHA512

            44864c7e9e515647ee4573b9879230649a89151b4cc070cea72a58918d4461388d7d224107856a312f23650035ad104b43e92df0914f4a3c57585339c5d27976

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3c3e1ec023b33059988ebf3bb1bd7e2b

            SHA1

            a22429e964c1cbbe356ea3612103954cb48193ca

            SHA256

            e12a37fcd9eb6030fb032d2d5b717a03caeb391e30fdae1a04a75e3b918c1fe5

            SHA512

            44864c7e9e515647ee4573b9879230649a89151b4cc070cea72a58918d4461388d7d224107856a312f23650035ad104b43e92df0914f4a3c57585339c5d27976

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6d4da1590fc271e580a895e9f22e5e84

            SHA1

            ab9f14e20ac21ad6630b14cdf41ca9c9a0d40aa2

            SHA256

            a0e8f599bcba881cf29fae4def7e4ba446f54e877b72aedcd59a7dd5ec928e8c

            SHA512

            9489d74720845bb033d8b7763db855afcc1f72bc5e64e4b031f8fdeab79227553f1033650b8097f926cebe6d90c1801c26cb5f9ee9fb04f85e988472c014f88e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6d4da1590fc271e580a895e9f22e5e84

            SHA1

            ab9f14e20ac21ad6630b14cdf41ca9c9a0d40aa2

            SHA256

            a0e8f599bcba881cf29fae4def7e4ba446f54e877b72aedcd59a7dd5ec928e8c

            SHA512

            9489d74720845bb033d8b7763db855afcc1f72bc5e64e4b031f8fdeab79227553f1033650b8097f926cebe6d90c1801c26cb5f9ee9fb04f85e988472c014f88e

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1114.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a8f55f801ededa8d25b12c13562cde0

            SHA1

            4bacbbd2a98c5582f360cf7d31e887debe0867a3

            SHA256

            ead9629f3ad3381ff51761a3946a73bf4caf77135d4598a5452eeeaa7fcbe2e9

            SHA512

            cf9282bdec5c57f11c36e3e7ad8cdcdcc9c8426759f9ad359aef39ade10acd8ca51b72834f0f9853a90b831f18ef2ff36ea142d1f365614f5b70deb55385a0da

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a8f55f801ededa8d25b12c13562cde0

            SHA1

            4bacbbd2a98c5582f360cf7d31e887debe0867a3

            SHA256

            ead9629f3ad3381ff51761a3946a73bf4caf77135d4598a5452eeeaa7fcbe2e9

            SHA512

            cf9282bdec5c57f11c36e3e7ad8cdcdcc9c8426759f9ad359aef39ade10acd8ca51b72834f0f9853a90b831f18ef2ff36ea142d1f365614f5b70deb55385a0da

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a8f55f801ededa8d25b12c13562cde0

            SHA1

            4bacbbd2a98c5582f360cf7d31e887debe0867a3

            SHA256

            ead9629f3ad3381ff51761a3946a73bf4caf77135d4598a5452eeeaa7fcbe2e9

            SHA512

            cf9282bdec5c57f11c36e3e7ad8cdcdcc9c8426759f9ad359aef39ade10acd8ca51b72834f0f9853a90b831f18ef2ff36ea142d1f365614f5b70deb55385a0da

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ebc2f49067b50fca066efbbc36364bf3

            SHA1

            c88958a292d0bf82eb4e9e4f73b5d66c8b841e83

            SHA256

            b93a44a8c210c0b15534934f32f22ae93e7214f99f85df8462d4d8c03970a38b

            SHA512

            a2437e289061903703e790d0fb41c1f30bd8525d6f7e43ed0cb1c248fdf1e8db47bbcfec3ffa50c2f58dd3ca36b0627df02d89fd03e298302122869f9aa498f0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ebc2f49067b50fca066efbbc36364bf3

            SHA1

            c88958a292d0bf82eb4e9e4f73b5d66c8b841e83

            SHA256

            b93a44a8c210c0b15534934f32f22ae93e7214f99f85df8462d4d8c03970a38b

            SHA512

            a2437e289061903703e790d0fb41c1f30bd8525d6f7e43ed0cb1c248fdf1e8db47bbcfec3ffa50c2f58dd3ca36b0627df02d89fd03e298302122869f9aa498f0

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a19001c2dde8634ccda8e23ed69691de

            SHA1

            48d4bbbd995dddf7775a3bacc70308a70953b031

            SHA256

            79ea996b93790c62d23ea09fd7a06babbcf96de06d5f3c71b04b2a5f7320a0dd

            SHA512

            d36ef71d291101b6b7342c656397d0b98e15ff56ea35308778e93677fe4668b8c1e8cdb3b8912294065ca065a976d042653e4a771393a00ea506f3e404e9e15f

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3c3e1ec023b33059988ebf3bb1bd7e2b

            SHA1

            a22429e964c1cbbe356ea3612103954cb48193ca

            SHA256

            e12a37fcd9eb6030fb032d2d5b717a03caeb391e30fdae1a04a75e3b918c1fe5

            SHA512

            44864c7e9e515647ee4573b9879230649a89151b4cc070cea72a58918d4461388d7d224107856a312f23650035ad104b43e92df0914f4a3c57585339c5d27976

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6d4da1590fc271e580a895e9f22e5e84

            SHA1

            ab9f14e20ac21ad6630b14cdf41ca9c9a0d40aa2

            SHA256

            a0e8f599bcba881cf29fae4def7e4ba446f54e877b72aedcd59a7dd5ec928e8c

            SHA512

            9489d74720845bb033d8b7763db855afcc1f72bc5e64e4b031f8fdeab79227553f1033650b8097f926cebe6d90c1801c26cb5f9ee9fb04f85e988472c014f88e

          • memory/528-81-0x0000000000000000-mapping.dmp

          • memory/892-70-0x0000000000000000-mapping.dmp

          • memory/1216-60-0x0000000000000000-mapping.dmp

          • memory/1740-57-0x0000000000000000-mapping.dmp

          • memory/1780-87-0x0000000000000000-mapping.dmp

          • memory/1784-86-0x0000000000000000-mapping.dmp

          • memory/1804-64-0x0000000000000000-mapping.dmp

          • memory/1876-61-0x0000000000000000-mapping.dmp

          • memory/1888-80-0x0000000000000000-mapping.dmp

          • memory/1892-58-0x0000000000000000-mapping.dmp

          • memory/1944-76-0x0000000000000000-mapping.dmp

          • memory/2036-54-0x00000000762D1000-0x00000000762D3000-memory.dmp

            Filesize

            8KB

          • memory/2036-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2036-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB