Analysis

  • max time kernel
    35s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:36

General

  • Target

    cf4533aec3a8cd1e4a461a38f1c2057ef08d734b309166c27df8c37fc76f3ee4.exe

  • Size

    557KB

  • MD5

    c02a423576144d3d02af1af4eb1f6506

  • SHA1

    917c27f72c8cf85461d38852a7d17981d2d9bde4

  • SHA256

    cf4533aec3a8cd1e4a461a38f1c2057ef08d734b309166c27df8c37fc76f3ee4

  • SHA512

    855d9875e53bc9e9c21d077dba3f3a24866738f872a7238a44190da14ebc76f8afd20d51990ac1ae6ae1f8e531bbb35a0e011f5cb2af2b7d30b1d34054699f15

  • SSDEEP

    12288:d2hB6D/bfVfj8JM73pR0lI6u57iBJ04zRF5kpLYFo/4kX8xlQYw:VDjfsM7ZR0C7kJ0czup86/3Xql

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\cf4533aec3a8cd1e4a461a38f1c2057ef08d734b309166c27df8c37fc76f3ee4.exe
    "C:\Users\Admin\AppData\Local\Temp\cf4533aec3a8cd1e4a461a38f1c2057ef08d734b309166c27df8c37fc76f3ee4.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:1492
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1640
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1472
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2012
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1280
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1328
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2036
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1844
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2004
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2008
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:428
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1932
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1924
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1920

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0aa00344dd7ce19d753cd4bab7ca6eea

            SHA1

            daf304197b74b68339ee40b6b0647e11992d63b9

            SHA256

            b53ffc539134e945cb0aeeeb9bdd5cd48bb973c69a4f3b43529222b5e8dfff97

            SHA512

            04afba21c414a902412ab791476a6f12b1a720d98baef205b55cc57030279b0cc0685ddd0cbb3632260353e037cc3fdff82c86bebd636753fa4fab570f564b58

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36e9415a2abd19f66104ac996611d184

            SHA1

            ae99f86c33973d0b4cc87f65c56fa296398ca93d

            SHA256

            a6b8069bb36dbc84b37ecd3699a2db103ec22ce5e8700fe6c602d1b8eeeae0fe

            SHA512

            d4fe24bb49967dc8e23ef30930ec2e346513343b4d139a666a79048a74797fbcbbe73b3a7ab1ab22ee0b1e304d491bf80a3cf1fc7d1850f12ea3fa4820a56e2f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            593223208c930c8dc768eb4a6dd56feb

            SHA1

            aed124c3ae90384577663ce5f29304b11128c466

            SHA256

            c958abb34e5b4dde5f709ed90640011b55b75a7383e3b0a73c13a08df4bb9963

            SHA512

            7dc965f915f93f9919a1383bccf3ae438ffff0366f5507523bebd9a273282f11bea2f19eaa5c57f4de7d3621c69fa929140d1e5be768f72e547e8607eaf3efb8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7908196bed0f90219608545f58ae7bd4

            SHA1

            d18b2004d12d7e48f6af829b40e776cd34657b6b

            SHA256

            77560b23bcafae658b478ea79bba982c35ddda8ec866d79432c9db216db8948d

            SHA512

            f8eefe449ca824526e32555d8bfaea4bd146334b2d2c009950cc6124fc5e7ff953f7a433989a3015035d02e40ae31bb610a2de36b8d2199e8fe297b564efb8cc

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7908196bed0f90219608545f58ae7bd4

            SHA1

            d18b2004d12d7e48f6af829b40e776cd34657b6b

            SHA256

            77560b23bcafae658b478ea79bba982c35ddda8ec866d79432c9db216db8948d

            SHA512

            f8eefe449ca824526e32555d8bfaea4bd146334b2d2c009950cc6124fc5e7ff953f7a433989a3015035d02e40ae31bb610a2de36b8d2199e8fe297b564efb8cc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c786b631d4c06fabdc4d17b4cd773ba4

            SHA1

            47208c7ea0dd86e6d9b25727ac2a0c705e4a356c

            SHA256

            af71e17bc4c55f1abcb061db80ffbeaa26928948c1996b3fbdaf18488c92e9cf

            SHA512

            af6adf326b4fa9b05d2a307e1a31d608f4025c63dba741ef8fac10c4b486f9b8b0f7e64e6d7458d6f37ddfcf03928d737ef37adf6134e23a90ec8b99f17eec9d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c786b631d4c06fabdc4d17b4cd773ba4

            SHA1

            47208c7ea0dd86e6d9b25727ac2a0c705e4a356c

            SHA256

            af71e17bc4c55f1abcb061db80ffbeaa26928948c1996b3fbdaf18488c92e9cf

            SHA512

            af6adf326b4fa9b05d2a307e1a31d608f4025c63dba741ef8fac10c4b486f9b8b0f7e64e6d7458d6f37ddfcf03928d737ef37adf6134e23a90ec8b99f17eec9d

          • \Users\Admin\AppData\Local\Temp\nsj71D9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj71D9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj71D9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj71D9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj71D9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0aa00344dd7ce19d753cd4bab7ca6eea

            SHA1

            daf304197b74b68339ee40b6b0647e11992d63b9

            SHA256

            b53ffc539134e945cb0aeeeb9bdd5cd48bb973c69a4f3b43529222b5e8dfff97

            SHA512

            04afba21c414a902412ab791476a6f12b1a720d98baef205b55cc57030279b0cc0685ddd0cbb3632260353e037cc3fdff82c86bebd636753fa4fab570f564b58

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0aa00344dd7ce19d753cd4bab7ca6eea

            SHA1

            daf304197b74b68339ee40b6b0647e11992d63b9

            SHA256

            b53ffc539134e945cb0aeeeb9bdd5cd48bb973c69a4f3b43529222b5e8dfff97

            SHA512

            04afba21c414a902412ab791476a6f12b1a720d98baef205b55cc57030279b0cc0685ddd0cbb3632260353e037cc3fdff82c86bebd636753fa4fab570f564b58

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0aa00344dd7ce19d753cd4bab7ca6eea

            SHA1

            daf304197b74b68339ee40b6b0647e11992d63b9

            SHA256

            b53ffc539134e945cb0aeeeb9bdd5cd48bb973c69a4f3b43529222b5e8dfff97

            SHA512

            04afba21c414a902412ab791476a6f12b1a720d98baef205b55cc57030279b0cc0685ddd0cbb3632260353e037cc3fdff82c86bebd636753fa4fab570f564b58

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36e9415a2abd19f66104ac996611d184

            SHA1

            ae99f86c33973d0b4cc87f65c56fa296398ca93d

            SHA256

            a6b8069bb36dbc84b37ecd3699a2db103ec22ce5e8700fe6c602d1b8eeeae0fe

            SHA512

            d4fe24bb49967dc8e23ef30930ec2e346513343b4d139a666a79048a74797fbcbbe73b3a7ab1ab22ee0b1e304d491bf80a3cf1fc7d1850f12ea3fa4820a56e2f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36e9415a2abd19f66104ac996611d184

            SHA1

            ae99f86c33973d0b4cc87f65c56fa296398ca93d

            SHA256

            a6b8069bb36dbc84b37ecd3699a2db103ec22ce5e8700fe6c602d1b8eeeae0fe

            SHA512

            d4fe24bb49967dc8e23ef30930ec2e346513343b4d139a666a79048a74797fbcbbe73b3a7ab1ab22ee0b1e304d491bf80a3cf1fc7d1850f12ea3fa4820a56e2f

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            593223208c930c8dc768eb4a6dd56feb

            SHA1

            aed124c3ae90384577663ce5f29304b11128c466

            SHA256

            c958abb34e5b4dde5f709ed90640011b55b75a7383e3b0a73c13a08df4bb9963

            SHA512

            7dc965f915f93f9919a1383bccf3ae438ffff0366f5507523bebd9a273282f11bea2f19eaa5c57f4de7d3621c69fa929140d1e5be768f72e547e8607eaf3efb8

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7908196bed0f90219608545f58ae7bd4

            SHA1

            d18b2004d12d7e48f6af829b40e776cd34657b6b

            SHA256

            77560b23bcafae658b478ea79bba982c35ddda8ec866d79432c9db216db8948d

            SHA512

            f8eefe449ca824526e32555d8bfaea4bd146334b2d2c009950cc6124fc5e7ff953f7a433989a3015035d02e40ae31bb610a2de36b8d2199e8fe297b564efb8cc

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c786b631d4c06fabdc4d17b4cd773ba4

            SHA1

            47208c7ea0dd86e6d9b25727ac2a0c705e4a356c

            SHA256

            af71e17bc4c55f1abcb061db80ffbeaa26928948c1996b3fbdaf18488c92e9cf

            SHA512

            af6adf326b4fa9b05d2a307e1a31d608f4025c63dba741ef8fac10c4b486f9b8b0f7e64e6d7458d6f37ddfcf03928d737ef37adf6134e23a90ec8b99f17eec9d

          • memory/428-86-0x0000000000000000-mapping.dmp

          • memory/1280-62-0x0000000000000000-mapping.dmp

          • memory/1328-64-0x0000000000000000-mapping.dmp

          • memory/1472-59-0x0000000000000000-mapping.dmp

          • memory/1492-54-0x0000000075451000-0x0000000075453000-memory.dmp

            Filesize

            8KB

          • memory/1492-58-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB

          • memory/1492-90-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB

          • memory/1640-57-0x0000000000000000-mapping.dmp

          • memory/1844-76-0x0000000000000000-mapping.dmp

          • memory/1932-87-0x0000000000000000-mapping.dmp

          • memory/2004-80-0x0000000000000000-mapping.dmp

          • memory/2008-81-0x0000000000000000-mapping.dmp

          • memory/2012-61-0x0000000000000000-mapping.dmp

          • memory/2036-70-0x0000000000000000-mapping.dmp