Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:06

General

  • Target

    fb73dc76ca7b1478a9261550c6f682d93df2110dc2adf8bc551c6ca5eed97212.exe

  • Size

    603KB

  • MD5

    324c622f79590ebea9b332c9afc845f6

  • SHA1

    57412f98a5ab84a5159d75f8a38c5f1968804752

  • SHA256

    fb73dc76ca7b1478a9261550c6f682d93df2110dc2adf8bc551c6ca5eed97212

  • SHA512

    88212876d3aa9eda3d37b42e800e622c2f44cb31a692aaa32676e6ea3aec78d45ffd811dffd6173f4c0de8946fc244eb570ba12722a754bc6c509ec7f19c1316

  • SSDEEP

    12288:SIny5DYTMIPRA6t+d5E3xu40aAZwO+x1W2yfNsR:UUTMcRAZDEL0O1W2Is

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb73dc76ca7b1478a9261550c6f682d93df2110dc2adf8bc551c6ca5eed97212.exe
    "C:\Users\Admin\AppData\Local\Temp\fb73dc76ca7b1478a9261550c6f682d93df2110dc2adf8bc551c6ca5eed97212.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:632
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4288
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1208
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2384
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3568
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1876
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3752
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3372
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3356
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4720
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1404
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3272
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:3472
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:5056

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjB889.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            054300ad2ef9ddc18c05ead5f55167f6

            SHA1

            07b8906dfae7ec9b78472d83ef324ed23b1c1234

            SHA256

            77da054cece53c6ebed83d3f1fed3a1198a16f128e363087712f9004781cb83b

            SHA512

            dfc267509ec830b25ee96116846f346f5ab5551d07746b10baa148a70da13e51724fc52aa2577760dfdddb9ade21be1607e2bdb31031875c71048feeceec60a3

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            054300ad2ef9ddc18c05ead5f55167f6

            SHA1

            07b8906dfae7ec9b78472d83ef324ed23b1c1234

            SHA256

            77da054cece53c6ebed83d3f1fed3a1198a16f128e363087712f9004781cb83b

            SHA512

            dfc267509ec830b25ee96116846f346f5ab5551d07746b10baa148a70da13e51724fc52aa2577760dfdddb9ade21be1607e2bdb31031875c71048feeceec60a3

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            054300ad2ef9ddc18c05ead5f55167f6

            SHA1

            07b8906dfae7ec9b78472d83ef324ed23b1c1234

            SHA256

            77da054cece53c6ebed83d3f1fed3a1198a16f128e363087712f9004781cb83b

            SHA512

            dfc267509ec830b25ee96116846f346f5ab5551d07746b10baa148a70da13e51724fc52aa2577760dfdddb9ade21be1607e2bdb31031875c71048feeceec60a3

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            054300ad2ef9ddc18c05ead5f55167f6

            SHA1

            07b8906dfae7ec9b78472d83ef324ed23b1c1234

            SHA256

            77da054cece53c6ebed83d3f1fed3a1198a16f128e363087712f9004781cb83b

            SHA512

            dfc267509ec830b25ee96116846f346f5ab5551d07746b10baa148a70da13e51724fc52aa2577760dfdddb9ade21be1607e2bdb31031875c71048feeceec60a3

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f2bbf8ec9d5d9d26b974d49013d9c550

            SHA1

            a2682ecbacb0c0d04464b6f0090b46943808264b

            SHA256

            7fb22f71c15410932199430208bc29a8c2cb53cb05b127faf247cd778cf29ced

            SHA512

            c8712b55e42afd9574b8da42034e686baef0dc004c8d3614da1ebc9ed7a939438af528add91c3512e2e21836889aa76a67a4f35e246f13a07bf2c52174c0a267

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f2bbf8ec9d5d9d26b974d49013d9c550

            SHA1

            a2682ecbacb0c0d04464b6f0090b46943808264b

            SHA256

            7fb22f71c15410932199430208bc29a8c2cb53cb05b127faf247cd778cf29ced

            SHA512

            c8712b55e42afd9574b8da42034e686baef0dc004c8d3614da1ebc9ed7a939438af528add91c3512e2e21836889aa76a67a4f35e246f13a07bf2c52174c0a267

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f2bbf8ec9d5d9d26b974d49013d9c550

            SHA1

            a2682ecbacb0c0d04464b6f0090b46943808264b

            SHA256

            7fb22f71c15410932199430208bc29a8c2cb53cb05b127faf247cd778cf29ced

            SHA512

            c8712b55e42afd9574b8da42034e686baef0dc004c8d3614da1ebc9ed7a939438af528add91c3512e2e21836889aa76a67a4f35e246f13a07bf2c52174c0a267

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f6f8ea352f334c9dc4de3d3a8aef02a7

            SHA1

            1d5483e244a1f43f3d8a802de7feb566020c6228

            SHA256

            4152a334d40ff9a6d8cc821a7f3689ae020b9f16fa12cafdc78cdc7f07c57f82

            SHA512

            fca079aeebb98b2ae1276d23f2038475dbc1ad0e9d2d2fae24a5965c4efdc4e3473c13355edd17ff14872a6c477c9d844a5f9d23524a4acaf5e0f1173cae03eb

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f6f8ea352f334c9dc4de3d3a8aef02a7

            SHA1

            1d5483e244a1f43f3d8a802de7feb566020c6228

            SHA256

            4152a334d40ff9a6d8cc821a7f3689ae020b9f16fa12cafdc78cdc7f07c57f82

            SHA512

            fca079aeebb98b2ae1276d23f2038475dbc1ad0e9d2d2fae24a5965c4efdc4e3473c13355edd17ff14872a6c477c9d844a5f9d23524a4acaf5e0f1173cae03eb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8b5ffe2fa121c3e947ad8481b1e99e4d

            SHA1

            3b9076f1763c6d60e367143d5b67974d6a41858f

            SHA256

            d59d987f107e9061c001daa17adbc16ffa90de1f726f10111cf1ababa6896c46

            SHA512

            5b609ea2daeae03e35b044c91eaddb01fc76deb379929d63e19966b21b3cec3f08b66eb4e9e7c215cc354c55824510a26ffaaca05dca0ea0ee74f4368c1bb007

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8b5ffe2fa121c3e947ad8481b1e99e4d

            SHA1

            3b9076f1763c6d60e367143d5b67974d6a41858f

            SHA256

            d59d987f107e9061c001daa17adbc16ffa90de1f726f10111cf1ababa6896c46

            SHA512

            5b609ea2daeae03e35b044c91eaddb01fc76deb379929d63e19966b21b3cec3f08b66eb4e9e7c215cc354c55824510a26ffaaca05dca0ea0ee74f4368c1bb007

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8b5ffe2fa121c3e947ad8481b1e99e4d

            SHA1

            3b9076f1763c6d60e367143d5b67974d6a41858f

            SHA256

            d59d987f107e9061c001daa17adbc16ffa90de1f726f10111cf1ababa6896c46

            SHA512

            5b609ea2daeae03e35b044c91eaddb01fc76deb379929d63e19966b21b3cec3f08b66eb4e9e7c215cc354c55824510a26ffaaca05dca0ea0ee74f4368c1bb007

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7faaf8c20f2cb794aafd2fccf2d7bf0b

            SHA1

            0ee1b34ff720c19542058650df48a63c05545ef8

            SHA256

            2df0af735476f284783393efc1bf7754c685445ae7200ca4f6d7f87c3518b1c8

            SHA512

            a403dbb4c0dc308958b29436b5454afdd71bcfde41a2034434dbc68e04d71abff6fbfd3b554b81c2c9415df6ce26151065f313f57fffdfd1ecd026a408c1393f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7faaf8c20f2cb794aafd2fccf2d7bf0b

            SHA1

            0ee1b34ff720c19542058650df48a63c05545ef8

            SHA256

            2df0af735476f284783393efc1bf7754c685445ae7200ca4f6d7f87c3518b1c8

            SHA512

            a403dbb4c0dc308958b29436b5454afdd71bcfde41a2034434dbc68e04d71abff6fbfd3b554b81c2c9415df6ce26151065f313f57fffdfd1ecd026a408c1393f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7faaf8c20f2cb794aafd2fccf2d7bf0b

            SHA1

            0ee1b34ff720c19542058650df48a63c05545ef8

            SHA256

            2df0af735476f284783393efc1bf7754c685445ae7200ca4f6d7f87c3518b1c8

            SHA512

            a403dbb4c0dc308958b29436b5454afdd71bcfde41a2034434dbc68e04d71abff6fbfd3b554b81c2c9415df6ce26151065f313f57fffdfd1ecd026a408c1393f

          • memory/632-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/632-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1208-136-0x0000000000000000-mapping.dmp

          • memory/1404-165-0x0000000000000000-mapping.dmp

          • memory/1876-142-0x0000000000000000-mapping.dmp

          • memory/2384-140-0x0000000000000000-mapping.dmp

          • memory/3272-166-0x0000000000000000-mapping.dmp

          • memory/3356-158-0x0000000000000000-mapping.dmp

          • memory/3372-153-0x0000000000000000-mapping.dmp

          • memory/3568-141-0x0000000000000000-mapping.dmp

          • memory/3752-147-0x0000000000000000-mapping.dmp

          • memory/4288-135-0x0000000000000000-mapping.dmp

          • memory/4720-159-0x0000000000000000-mapping.dmp