Analysis

  • max time kernel
    19s
  • max time network
    46s
  • 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

    dc5957b5b046593561bc22031d69da11f9b1f19f3044ec1f63b35a86d136a91e.exe

  • Size

    603KB

  • MD5

    e6cfed4d0d8de1dcd10b67301c9b36f8

  • SHA1

    e376a6e8fbc0fdcd2f6567f682428a7ed98457f4

  • SHA256

    dc5957b5b046593561bc22031d69da11f9b1f19f3044ec1f63b35a86d136a91e

  • SHA512

    67ffef06e46c6f00bb1fc663b0e6df4c7bfc4bf569ad20c46673df3cd925ab712cab003226bfeb564ca23af4bb2a0600b5bd94b98dcf572a2e25a09142d4fb64

  • SSDEEP

    12288:lIny5DYTfIvBKE4qKTyuSNrnVuDtdPQN5i/uxOeLfEiw6:RUTf0BLKmrcRVQN5os6

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\dc5957b5b046593561bc22031d69da11f9b1f19f3044ec1f63b35a86d136a91e.exe
    "C:\Users\Admin\AppData\Local\Temp\dc5957b5b046593561bc22031d69da11f9b1f19f3044ec1f63b35a86d136a91e.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:1956
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1720
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1340
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1780
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:848
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1392
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:636
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:388
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:780
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1216
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1676
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1128
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:588
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:528

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5080939b6131ee8b7b467973e3385a06

            SHA1

            965106ec45cf0fe29cea6d2d447f7d0d6706744a

            SHA256

            9c329090b8f31a11cf671494188c4db86fb69133f9c59fd815dbee93dcc51cc2

            SHA512

            1a35891397dcebb862e15aad541c55d70441e09e18967b3dd71aaca0538133b3cafc09708361748040e9b7a4607a5563806cf0f5ec02d2e9eeabb4d81da1ea39

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4e73f3130b18b86f9497057e43f1472b

            SHA1

            fa3530e9bb6d1878ad1a17bc83a16498de7cdc95

            SHA256

            7078fc1e732a886e5b0200818f6f57cb01affe8dcc55cf32e37cab848c8948e1

            SHA512

            cfa51c1617c4201b648997a55a96a997e2c6355de58cde26e63036034ce867267278a98abf9b287ec4b6f730f2de05edc55148574abb43f9c901953bb97ee12e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8cd269349bb9e4708d8e7450587edf7d

            SHA1

            7bd3bc0e1484ffc30160c4f77ba71d0975e406cb

            SHA256

            f28ba215e96a9d224219a8c5b4e06d02420522acaa6859fd4a1e9c9685eb2919

            SHA512

            09558af102b04a6f6aa5411d8506e8c343df05096dc6a6387a275b1407b51947fddc6c50cbbb2b93fb19ccdb5e332b4fa3cde437f50386a684849e16eb4072ab

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            64b0829fd7248fcc2560e71222931f89

            SHA1

            5fdaf615cc352df1ae2de8796f931136f06b02dc

            SHA256

            6d904c9e4250a5350531592cb02b0bb042230dad14ea794ef108f0cd7569040b

            SHA512

            a2722ab3a232d39a38ab47522eb4533e99fa51be43bbb2cad8b23098dabb5884c0c19e3798ea540cfd3bfec4c29d83a1ef08cc98b67550702090e68207cd8021

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            64b0829fd7248fcc2560e71222931f89

            SHA1

            5fdaf615cc352df1ae2de8796f931136f06b02dc

            SHA256

            6d904c9e4250a5350531592cb02b0bb042230dad14ea794ef108f0cd7569040b

            SHA512

            a2722ab3a232d39a38ab47522eb4533e99fa51be43bbb2cad8b23098dabb5884c0c19e3798ea540cfd3bfec4c29d83a1ef08cc98b67550702090e68207cd8021

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            1eeefd85eaa89336287034740d77476a

            SHA1

            93d1d5a74c90af81b67f1e83923d8a9d3337d027

            SHA256

            def15b253817f6bdb593577865da2f2a7ad13e0a89fe9ee10e69f932fe7a7224

            SHA512

            2f98541bde3ec2fae9f4f6d23949263d23dec5ccfb4f7f437f69c751fe8da9570c724d1cd5ea0692192c246307b0468740e3be49d4afdcc43bb18264ea287c57

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            1eeefd85eaa89336287034740d77476a

            SHA1

            93d1d5a74c90af81b67f1e83923d8a9d3337d027

            SHA256

            def15b253817f6bdb593577865da2f2a7ad13e0a89fe9ee10e69f932fe7a7224

            SHA512

            2f98541bde3ec2fae9f4f6d23949263d23dec5ccfb4f7f437f69c751fe8da9570c724d1cd5ea0692192c246307b0468740e3be49d4afdcc43bb18264ea287c57

          • \Users\Admin\AppData\Local\Temp\nso4924.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso4924.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4924.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4924.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4924.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5080939b6131ee8b7b467973e3385a06

            SHA1

            965106ec45cf0fe29cea6d2d447f7d0d6706744a

            SHA256

            9c329090b8f31a11cf671494188c4db86fb69133f9c59fd815dbee93dcc51cc2

            SHA512

            1a35891397dcebb862e15aad541c55d70441e09e18967b3dd71aaca0538133b3cafc09708361748040e9b7a4607a5563806cf0f5ec02d2e9eeabb4d81da1ea39

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5080939b6131ee8b7b467973e3385a06

            SHA1

            965106ec45cf0fe29cea6d2d447f7d0d6706744a

            SHA256

            9c329090b8f31a11cf671494188c4db86fb69133f9c59fd815dbee93dcc51cc2

            SHA512

            1a35891397dcebb862e15aad541c55d70441e09e18967b3dd71aaca0538133b3cafc09708361748040e9b7a4607a5563806cf0f5ec02d2e9eeabb4d81da1ea39

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5080939b6131ee8b7b467973e3385a06

            SHA1

            965106ec45cf0fe29cea6d2d447f7d0d6706744a

            SHA256

            9c329090b8f31a11cf671494188c4db86fb69133f9c59fd815dbee93dcc51cc2

            SHA512

            1a35891397dcebb862e15aad541c55d70441e09e18967b3dd71aaca0538133b3cafc09708361748040e9b7a4607a5563806cf0f5ec02d2e9eeabb4d81da1ea39

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4e73f3130b18b86f9497057e43f1472b

            SHA1

            fa3530e9bb6d1878ad1a17bc83a16498de7cdc95

            SHA256

            7078fc1e732a886e5b0200818f6f57cb01affe8dcc55cf32e37cab848c8948e1

            SHA512

            cfa51c1617c4201b648997a55a96a997e2c6355de58cde26e63036034ce867267278a98abf9b287ec4b6f730f2de05edc55148574abb43f9c901953bb97ee12e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4e73f3130b18b86f9497057e43f1472b

            SHA1

            fa3530e9bb6d1878ad1a17bc83a16498de7cdc95

            SHA256

            7078fc1e732a886e5b0200818f6f57cb01affe8dcc55cf32e37cab848c8948e1

            SHA512

            cfa51c1617c4201b648997a55a96a997e2c6355de58cde26e63036034ce867267278a98abf9b287ec4b6f730f2de05edc55148574abb43f9c901953bb97ee12e

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8cd269349bb9e4708d8e7450587edf7d

            SHA1

            7bd3bc0e1484ffc30160c4f77ba71d0975e406cb

            SHA256

            f28ba215e96a9d224219a8c5b4e06d02420522acaa6859fd4a1e9c9685eb2919

            SHA512

            09558af102b04a6f6aa5411d8506e8c343df05096dc6a6387a275b1407b51947fddc6c50cbbb2b93fb19ccdb5e332b4fa3cde437f50386a684849e16eb4072ab

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            64b0829fd7248fcc2560e71222931f89

            SHA1

            5fdaf615cc352df1ae2de8796f931136f06b02dc

            SHA256

            6d904c9e4250a5350531592cb02b0bb042230dad14ea794ef108f0cd7569040b

            SHA512

            a2722ab3a232d39a38ab47522eb4533e99fa51be43bbb2cad8b23098dabb5884c0c19e3798ea540cfd3bfec4c29d83a1ef08cc98b67550702090e68207cd8021

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            1eeefd85eaa89336287034740d77476a

            SHA1

            93d1d5a74c90af81b67f1e83923d8a9d3337d027

            SHA256

            def15b253817f6bdb593577865da2f2a7ad13e0a89fe9ee10e69f932fe7a7224

            SHA512

            2f98541bde3ec2fae9f4f6d23949263d23dec5ccfb4f7f437f69c751fe8da9570c724d1cd5ea0692192c246307b0468740e3be49d4afdcc43bb18264ea287c57

          • memory/388-76-0x0000000000000000-mapping.dmp

          • memory/636-70-0x0000000000000000-mapping.dmp

          • memory/780-80-0x0000000000000000-mapping.dmp

          • memory/848-62-0x0000000000000000-mapping.dmp

          • memory/1128-87-0x0000000000000000-mapping.dmp

          • memory/1216-81-0x0000000000000000-mapping.dmp

          • memory/1340-58-0x0000000000000000-mapping.dmp

          • memory/1392-64-0x0000000000000000-mapping.dmp

          • memory/1676-86-0x0000000000000000-mapping.dmp

          • memory/1720-57-0x0000000000000000-mapping.dmp

          • memory/1780-61-0x0000000000000000-mapping.dmp

          • memory/1956-54-0x0000000074F01000-0x0000000074F03000-memory.dmp

            Filesize

            8KB

          • memory/1956-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1956-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB