Analysis

  • max time kernel
    44s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:12

General

  • Target

    cae99c7551cfcda78585dacddd0f76508e6f5cc523991b37fed8d10c983475e5.exe

  • Size

    602KB

  • MD5

    428b7f2d57c11b739fc644e0c653820a

  • SHA1

    2b4c5f553e7c76b40b1ee97d4775799801e20300

  • SHA256

    cae99c7551cfcda78585dacddd0f76508e6f5cc523991b37fed8d10c983475e5

  • SHA512

    29c0dc9262d7b4b1ff1a6c115d066a7077f6ab272782d2267f9bc2d56c7ebe6aee57d014a0fd8147380bce81d98507a563d543e041daee5a3d14052d367193dd

  • SSDEEP

    12288:2Iny5DYTWAXRYzxC5+ec2pn+UWMPxKwNowFx9a52:4UTWEMx3elpn+UW+xnlx9a52

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\cae99c7551cfcda78585dacddd0f76508e6f5cc523991b37fed8d10c983475e5.exe
    "C:\Users\Admin\AppData\Local\Temp\cae99c7551cfcda78585dacddd0f76508e6f5cc523991b37fed8d10c983475e5.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:1188
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1536
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:652
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1528
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:592
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1972
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:108
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2012
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:796
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1084
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:996
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1720
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1808
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1868

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5a082086db368f695b5efb296a6a48c6

            SHA1

            b2f6c5c2fbd1f0c6a314b0ce46bf1c06e9288f95

            SHA256

            f527710b02b4582eb415f9738c4bead55e51fad35c1fb478c634729e45461452

            SHA512

            bc62d6abc794f40df7def0c809bb8f066088b47cc31d0374cf195321b8e62f5ffef0a9244db60ade5126a4151b999914136bc71c2e46e2c56a168e5aea6f7074

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6ebaf4fd75049369db02bf9178197dfe

            SHA1

            9ef65d05546339eb57d323e6de2b0a17fdb8cc71

            SHA256

            d5bbe214666ecfbef18e4a046d7e9039b6cee8f2b6d66ecae79da419604d111c

            SHA512

            3e6cbca932a9d6a2cd2babdeb09544a0a685db1d1023bd0ddad1e30e0561c75a15b61d5eb6ce06d157b239152dd52457dd29320e0671541d4542a655d99174f2

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            266e7257fccecc4bc6b9e4f1e5313e1f

            SHA1

            60172635c47b5c279cacf64d26e90ad515a0a9e5

            SHA256

            0fd85c7d41d31e9dd20ba3ae6927b1dda4b3c69546c44d9d368c953b6a08c18b

            SHA512

            0ff319f46f3e4daab18e8f3bd37dd7f21f0154d91e8020df1b4f2b22eab97f6c7ae77b3a89c679e3f6c600736b36dff45eed83e77c0f8f8e49546f0689abbd03

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1f341505fbe1b0638f7074de4fe9d550

            SHA1

            123266f70349baf723e85bb063d6e90625a19bb8

            SHA256

            6bfa3e5eda938ba216cf3965497124dae0ecfe0e9645835a2acdbec5427761a7

            SHA512

            58eaf5a225bceb51c7ea9914d9c3b39848b571d3b45738ef3e1756085d9909792a0d8e81f83034049d59f09b17e210099c8fe6d7baae024631caf427348450af

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1f341505fbe1b0638f7074de4fe9d550

            SHA1

            123266f70349baf723e85bb063d6e90625a19bb8

            SHA256

            6bfa3e5eda938ba216cf3965497124dae0ecfe0e9645835a2acdbec5427761a7

            SHA512

            58eaf5a225bceb51c7ea9914d9c3b39848b571d3b45738ef3e1756085d9909792a0d8e81f83034049d59f09b17e210099c8fe6d7baae024631caf427348450af

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            8314dd1b41bc2dbedf2e6163617e4158

            SHA1

            a4a9f1c21ee34706a38438d7693ccca1c249fa37

            SHA256

            a96ebcbf75f1db81e208f84506e24575ff8f3126526198957fcc375fdea25de9

            SHA512

            b79835a8e75a0a53d0c1e13d56a2ffa5e287893cb026316e0e445614bc75cb0c81a7f9f286db8c028cb29d0df2f164116c0540971682eeec5bae0522ba31fdce

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            8314dd1b41bc2dbedf2e6163617e4158

            SHA1

            a4a9f1c21ee34706a38438d7693ccca1c249fa37

            SHA256

            a96ebcbf75f1db81e208f84506e24575ff8f3126526198957fcc375fdea25de9

            SHA512

            b79835a8e75a0a53d0c1e13d56a2ffa5e287893cb026316e0e445614bc75cb0c81a7f9f286db8c028cb29d0df2f164116c0540971682eeec5bae0522ba31fdce

          • \Users\Admin\AppData\Local\Temp\nst120D.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst120D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst120D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst120D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst120D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5a082086db368f695b5efb296a6a48c6

            SHA1

            b2f6c5c2fbd1f0c6a314b0ce46bf1c06e9288f95

            SHA256

            f527710b02b4582eb415f9738c4bead55e51fad35c1fb478c634729e45461452

            SHA512

            bc62d6abc794f40df7def0c809bb8f066088b47cc31d0374cf195321b8e62f5ffef0a9244db60ade5126a4151b999914136bc71c2e46e2c56a168e5aea6f7074

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5a082086db368f695b5efb296a6a48c6

            SHA1

            b2f6c5c2fbd1f0c6a314b0ce46bf1c06e9288f95

            SHA256

            f527710b02b4582eb415f9738c4bead55e51fad35c1fb478c634729e45461452

            SHA512

            bc62d6abc794f40df7def0c809bb8f066088b47cc31d0374cf195321b8e62f5ffef0a9244db60ade5126a4151b999914136bc71c2e46e2c56a168e5aea6f7074

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5a082086db368f695b5efb296a6a48c6

            SHA1

            b2f6c5c2fbd1f0c6a314b0ce46bf1c06e9288f95

            SHA256

            f527710b02b4582eb415f9738c4bead55e51fad35c1fb478c634729e45461452

            SHA512

            bc62d6abc794f40df7def0c809bb8f066088b47cc31d0374cf195321b8e62f5ffef0a9244db60ade5126a4151b999914136bc71c2e46e2c56a168e5aea6f7074

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6ebaf4fd75049369db02bf9178197dfe

            SHA1

            9ef65d05546339eb57d323e6de2b0a17fdb8cc71

            SHA256

            d5bbe214666ecfbef18e4a046d7e9039b6cee8f2b6d66ecae79da419604d111c

            SHA512

            3e6cbca932a9d6a2cd2babdeb09544a0a685db1d1023bd0ddad1e30e0561c75a15b61d5eb6ce06d157b239152dd52457dd29320e0671541d4542a655d99174f2

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6ebaf4fd75049369db02bf9178197dfe

            SHA1

            9ef65d05546339eb57d323e6de2b0a17fdb8cc71

            SHA256

            d5bbe214666ecfbef18e4a046d7e9039b6cee8f2b6d66ecae79da419604d111c

            SHA512

            3e6cbca932a9d6a2cd2babdeb09544a0a685db1d1023bd0ddad1e30e0561c75a15b61d5eb6ce06d157b239152dd52457dd29320e0671541d4542a655d99174f2

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            266e7257fccecc4bc6b9e4f1e5313e1f

            SHA1

            60172635c47b5c279cacf64d26e90ad515a0a9e5

            SHA256

            0fd85c7d41d31e9dd20ba3ae6927b1dda4b3c69546c44d9d368c953b6a08c18b

            SHA512

            0ff319f46f3e4daab18e8f3bd37dd7f21f0154d91e8020df1b4f2b22eab97f6c7ae77b3a89c679e3f6c600736b36dff45eed83e77c0f8f8e49546f0689abbd03

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1f341505fbe1b0638f7074de4fe9d550

            SHA1

            123266f70349baf723e85bb063d6e90625a19bb8

            SHA256

            6bfa3e5eda938ba216cf3965497124dae0ecfe0e9645835a2acdbec5427761a7

            SHA512

            58eaf5a225bceb51c7ea9914d9c3b39848b571d3b45738ef3e1756085d9909792a0d8e81f83034049d59f09b17e210099c8fe6d7baae024631caf427348450af

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            8314dd1b41bc2dbedf2e6163617e4158

            SHA1

            a4a9f1c21ee34706a38438d7693ccca1c249fa37

            SHA256

            a96ebcbf75f1db81e208f84506e24575ff8f3126526198957fcc375fdea25de9

            SHA512

            b79835a8e75a0a53d0c1e13d56a2ffa5e287893cb026316e0e445614bc75cb0c81a7f9f286db8c028cb29d0df2f164116c0540971682eeec5bae0522ba31fdce

          • memory/108-70-0x0000000000000000-mapping.dmp

          • memory/592-62-0x0000000000000000-mapping.dmp

          • memory/652-58-0x0000000000000000-mapping.dmp

          • memory/796-80-0x0000000000000000-mapping.dmp

          • memory/996-86-0x0000000000000000-mapping.dmp

          • memory/1084-81-0x0000000000000000-mapping.dmp

          • memory/1188-54-0x0000000074FD1000-0x0000000074FD3000-memory.dmp

            Filesize

            8KB

          • memory/1188-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1188-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1528-61-0x0000000000000000-mapping.dmp

          • memory/1536-57-0x0000000000000000-mapping.dmp

          • memory/1720-87-0x0000000000000000-mapping.dmp

          • memory/1972-64-0x0000000000000000-mapping.dmp

          • memory/2012-76-0x0000000000000000-mapping.dmp