Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    a7153aad8f9edb29ebd070d7608dc6788128e1fc1ca1576297e836322d471790.exe

  • Size

    603KB

  • MD5

    c9d9ab3036230636a0a2ffd82142c333

  • SHA1

    32798b3c2099743d4b353e9cbe14b9fc06442f4f

  • SHA256

    a7153aad8f9edb29ebd070d7608dc6788128e1fc1ca1576297e836322d471790

  • SHA512

    18a2d3370425f0ad2d1d6333a9167be8555afe5e7d9a72707dbcd6a4e23f3ac468212c5ffeeacd2a372919ce4b0fe239248e49508eb8b6231a8d03941c55b449

  • SSDEEP

    12288:dIny5DYTMIYQprd1x7Gc+076sk095opLU9e33ye6aX5HeVmBzl2b:JUTMvSnx7GP076skO5FSie6aXI4T2

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\a7153aad8f9edb29ebd070d7608dc6788128e1fc1ca1576297e836322d471790.exe
    "C:\Users\Admin\AppData\Local\Temp\a7153aad8f9edb29ebd070d7608dc6788128e1fc1ca1576297e836322d471790.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:2024
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:644
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1124
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:676
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:520
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1292
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1592
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1260
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1924
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1692
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:744
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1952
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1936
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:432

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            976fe3b71c18997ef9a42ba385fed3f6

            SHA1

            7a8bed07cb23cacc7262ef9acb5a7000710eb18e

            SHA256

            303551ed3e3061bd8026f2252426d1d82cb0a025d413f9359f23761bca083eed

            SHA512

            20ad987a28846644776182863eb34e203219e289c617d569ba6060257e335d9cbcfcb59c565c0f711828530d121a423d5d1d534ec804ed1088bad2953120a8b1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5bc8c52952ef1f5d727ce5246dcbcea9

            SHA1

            a6146abf747fa207c1d16bd8d30ce0045dc16c67

            SHA256

            e82d27125659fc42aedf149b9f64cf98ebc8b0d38b7b5eb2b6c2aa97bd62c82f

            SHA512

            0b98cfe4d13b7fc14751f903ecf638d5c5c86b93d6e070b88f00914ba774ee78a41d25fdcde404f36ff5482942708fdeebcac9febad8893352999fcb260ef491

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            65156fd4800eab50708fdd2e85665f0f

            SHA1

            1229642cadecc60b6ff7738ee88b8081db2dee86

            SHA256

            7692d6c30a9eba3b564cae553f6b3414ef8544d7dcc9aa26d5068549520d68c1

            SHA512

            bd50c3ca7e3f8e6146c2c65abe39af2b6259d0d42b5bf3cc2e746bf2b489c9482858dedd574529ad1441fd2fae77de2da84dc9ad24f080ff7a7d31304d8b97f4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f7d465a211d3acbe6d2a033cd82bb2e7

            SHA1

            ba97f322e9a7f034d9d5df004ba859d7b6407282

            SHA256

            1895bbcd254039fe8ce0e8c4e4658a83c354b1f05ccbd9118cb72641a255c7eb

            SHA512

            614e75f4d9d81ec3cb1a4b61557ce8484285613f9b356731be732e6cdf1f87ab0d2f6d3ebe6bd039ae278d8cb9c487fe7db6bb9542b3cfadef4bd69d3243375b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f7d465a211d3acbe6d2a033cd82bb2e7

            SHA1

            ba97f322e9a7f034d9d5df004ba859d7b6407282

            SHA256

            1895bbcd254039fe8ce0e8c4e4658a83c354b1f05ccbd9118cb72641a255c7eb

            SHA512

            614e75f4d9d81ec3cb1a4b61557ce8484285613f9b356731be732e6cdf1f87ab0d2f6d3ebe6bd039ae278d8cb9c487fe7db6bb9542b3cfadef4bd69d3243375b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            92a653333c5010b6b8ad7ff0a708c028

            SHA1

            dfd28bb1fd8fff745ca2777899c8ce76dfe64eae

            SHA256

            60cb4ed2b304c6b1a373481b3be6378f8e5c7bf30b0adc02a14a96a855d6b066

            SHA512

            c4a0ff42c62b1ab98d84959bf76c37f9f10c66df16c768fac6a9942b55b0e6530900b1ca3a0273e0c9465b88c6ece74aa2f14dda400c617a05cd672058131f67

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            92a653333c5010b6b8ad7ff0a708c028

            SHA1

            dfd28bb1fd8fff745ca2777899c8ce76dfe64eae

            SHA256

            60cb4ed2b304c6b1a373481b3be6378f8e5c7bf30b0adc02a14a96a855d6b066

            SHA512

            c4a0ff42c62b1ab98d84959bf76c37f9f10c66df16c768fac6a9942b55b0e6530900b1ca3a0273e0c9465b88c6ece74aa2f14dda400c617a05cd672058131f67

          • \Users\Admin\AppData\Local\Temp\nsoF40.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoF40.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoF40.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoF40.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoF40.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            976fe3b71c18997ef9a42ba385fed3f6

            SHA1

            7a8bed07cb23cacc7262ef9acb5a7000710eb18e

            SHA256

            303551ed3e3061bd8026f2252426d1d82cb0a025d413f9359f23761bca083eed

            SHA512

            20ad987a28846644776182863eb34e203219e289c617d569ba6060257e335d9cbcfcb59c565c0f711828530d121a423d5d1d534ec804ed1088bad2953120a8b1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            976fe3b71c18997ef9a42ba385fed3f6

            SHA1

            7a8bed07cb23cacc7262ef9acb5a7000710eb18e

            SHA256

            303551ed3e3061bd8026f2252426d1d82cb0a025d413f9359f23761bca083eed

            SHA512

            20ad987a28846644776182863eb34e203219e289c617d569ba6060257e335d9cbcfcb59c565c0f711828530d121a423d5d1d534ec804ed1088bad2953120a8b1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            976fe3b71c18997ef9a42ba385fed3f6

            SHA1

            7a8bed07cb23cacc7262ef9acb5a7000710eb18e

            SHA256

            303551ed3e3061bd8026f2252426d1d82cb0a025d413f9359f23761bca083eed

            SHA512

            20ad987a28846644776182863eb34e203219e289c617d569ba6060257e335d9cbcfcb59c565c0f711828530d121a423d5d1d534ec804ed1088bad2953120a8b1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5bc8c52952ef1f5d727ce5246dcbcea9

            SHA1

            a6146abf747fa207c1d16bd8d30ce0045dc16c67

            SHA256

            e82d27125659fc42aedf149b9f64cf98ebc8b0d38b7b5eb2b6c2aa97bd62c82f

            SHA512

            0b98cfe4d13b7fc14751f903ecf638d5c5c86b93d6e070b88f00914ba774ee78a41d25fdcde404f36ff5482942708fdeebcac9febad8893352999fcb260ef491

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5bc8c52952ef1f5d727ce5246dcbcea9

            SHA1

            a6146abf747fa207c1d16bd8d30ce0045dc16c67

            SHA256

            e82d27125659fc42aedf149b9f64cf98ebc8b0d38b7b5eb2b6c2aa97bd62c82f

            SHA512

            0b98cfe4d13b7fc14751f903ecf638d5c5c86b93d6e070b88f00914ba774ee78a41d25fdcde404f36ff5482942708fdeebcac9febad8893352999fcb260ef491

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            65156fd4800eab50708fdd2e85665f0f

            SHA1

            1229642cadecc60b6ff7738ee88b8081db2dee86

            SHA256

            7692d6c30a9eba3b564cae553f6b3414ef8544d7dcc9aa26d5068549520d68c1

            SHA512

            bd50c3ca7e3f8e6146c2c65abe39af2b6259d0d42b5bf3cc2e746bf2b489c9482858dedd574529ad1441fd2fae77de2da84dc9ad24f080ff7a7d31304d8b97f4

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f7d465a211d3acbe6d2a033cd82bb2e7

            SHA1

            ba97f322e9a7f034d9d5df004ba859d7b6407282

            SHA256

            1895bbcd254039fe8ce0e8c4e4658a83c354b1f05ccbd9118cb72641a255c7eb

            SHA512

            614e75f4d9d81ec3cb1a4b61557ce8484285613f9b356731be732e6cdf1f87ab0d2f6d3ebe6bd039ae278d8cb9c487fe7db6bb9542b3cfadef4bd69d3243375b

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            92a653333c5010b6b8ad7ff0a708c028

            SHA1

            dfd28bb1fd8fff745ca2777899c8ce76dfe64eae

            SHA256

            60cb4ed2b304c6b1a373481b3be6378f8e5c7bf30b0adc02a14a96a855d6b066

            SHA512

            c4a0ff42c62b1ab98d84959bf76c37f9f10c66df16c768fac6a9942b55b0e6530900b1ca3a0273e0c9465b88c6ece74aa2f14dda400c617a05cd672058131f67

          • memory/520-62-0x0000000000000000-mapping.dmp

          • memory/644-58-0x0000000000000000-mapping.dmp

          • memory/676-61-0x0000000000000000-mapping.dmp

          • memory/744-86-0x0000000000000000-mapping.dmp

          • memory/1124-59-0x0000000000000000-mapping.dmp

          • memory/1260-76-0x0000000000000000-mapping.dmp

          • memory/1292-64-0x0000000000000000-mapping.dmp

          • memory/1592-70-0x0000000000000000-mapping.dmp

          • memory/1692-81-0x0000000000000000-mapping.dmp

          • memory/1924-80-0x0000000000000000-mapping.dmp

          • memory/1952-87-0x0000000000000000-mapping.dmp

          • memory/2024-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

            Filesize

            8KB

          • memory/2024-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2024-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB