Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:09

General

  • Target

    e3185ffc89ba0599c979b4ff600b75ac9dfbb233205e42db1185f639aca9852b.exe

  • Size

    601KB

  • MD5

    925cebc1b35a21de99f82e2ca73e4edc

  • SHA1

    cfc0f294eec41772d6bfb50f7a4276e6ebfed9e9

  • SHA256

    e3185ffc89ba0599c979b4ff600b75ac9dfbb233205e42db1185f639aca9852b

  • SHA512

    381317b7464065c9a27540f63353e503e31d96154de370bb31089218a1307026da002741ffff1413c0023aef79ea3c8e250c79cea99856ce599ae6fb77869511

  • SSDEEP

    12288:jIny5DYTDZ1ykbCPrT2dRU9iXn+MvtCrWyy6R7aNC:rUTDOSCPrqlXFvt0y61IC

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\e3185ffc89ba0599c979b4ff600b75ac9dfbb233205e42db1185f639aca9852b.exe
    "C:\Users\Admin\AppData\Local\Temp\e3185ffc89ba0599c979b4ff600b75ac9dfbb233205e42db1185f639aca9852b.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:4496
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:368
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:220
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4428
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4132
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2556
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:756
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3496
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4512
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1648
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2052
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3976
          • 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:3140
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3116

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk791A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a483f6545c61b28cb674462f627494d

            SHA1

            e93eb06ba8e50d9a5e138e58a69bfe18de03c247

            SHA256

            15d030dfb5e06f8c8f1438696f1bfb6e852b6a893f9af6039f58b4ced05790b2

            SHA512

            7e704fd8e3659c15d82e711e5b1d97918c63572f15fee7288f3ead1cd6e80cf6271a883d364396a511f8ca428ada1b9f4ddcfa9fe19289762cba10b6336d8598

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a483f6545c61b28cb674462f627494d

            SHA1

            e93eb06ba8e50d9a5e138e58a69bfe18de03c247

            SHA256

            15d030dfb5e06f8c8f1438696f1bfb6e852b6a893f9af6039f58b4ced05790b2

            SHA512

            7e704fd8e3659c15d82e711e5b1d97918c63572f15fee7288f3ead1cd6e80cf6271a883d364396a511f8ca428ada1b9f4ddcfa9fe19289762cba10b6336d8598

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a483f6545c61b28cb674462f627494d

            SHA1

            e93eb06ba8e50d9a5e138e58a69bfe18de03c247

            SHA256

            15d030dfb5e06f8c8f1438696f1bfb6e852b6a893f9af6039f58b4ced05790b2

            SHA512

            7e704fd8e3659c15d82e711e5b1d97918c63572f15fee7288f3ead1cd6e80cf6271a883d364396a511f8ca428ada1b9f4ddcfa9fe19289762cba10b6336d8598

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a483f6545c61b28cb674462f627494d

            SHA1

            e93eb06ba8e50d9a5e138e58a69bfe18de03c247

            SHA256

            15d030dfb5e06f8c8f1438696f1bfb6e852b6a893f9af6039f58b4ced05790b2

            SHA512

            7e704fd8e3659c15d82e711e5b1d97918c63572f15fee7288f3ead1cd6e80cf6271a883d364396a511f8ca428ada1b9f4ddcfa9fe19289762cba10b6336d8598

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a6c6b7162eaa0331c00bd6d34d54952f

            SHA1

            3b753b3c08cd488308876ff16529e2b1697cdd27

            SHA256

            153ac2f69c2a402ae93e1821a7b7c6b02597ce002d3efa73e4a7db2adaacdec1

            SHA512

            f14f7891851c7c9e734dba74dd001567488a43a4ca759a5aeba554465eb31e4092f60c282af3660314108222a6a45fb59824a44201a156f1d95aee800451478b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a6c6b7162eaa0331c00bd6d34d54952f

            SHA1

            3b753b3c08cd488308876ff16529e2b1697cdd27

            SHA256

            153ac2f69c2a402ae93e1821a7b7c6b02597ce002d3efa73e4a7db2adaacdec1

            SHA512

            f14f7891851c7c9e734dba74dd001567488a43a4ca759a5aeba554465eb31e4092f60c282af3660314108222a6a45fb59824a44201a156f1d95aee800451478b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a6c6b7162eaa0331c00bd6d34d54952f

            SHA1

            3b753b3c08cd488308876ff16529e2b1697cdd27

            SHA256

            153ac2f69c2a402ae93e1821a7b7c6b02597ce002d3efa73e4a7db2adaacdec1

            SHA512

            f14f7891851c7c9e734dba74dd001567488a43a4ca759a5aeba554465eb31e4092f60c282af3660314108222a6a45fb59824a44201a156f1d95aee800451478b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            30820882e64ad5cdc9d3c71a19bd9abb

            SHA1

            87a75d03a8e00478f753e7f016b1fb569559b50c

            SHA256

            267f0a0b6b419d8ab34e9d32fcfa4a348b25eb90c0a027fb4350a20d31118ea3

            SHA512

            1048a84c47caa853cd4daa064ca3f897f1604087ae5be7a22e3e03fdeff697883f0797d2fa9ab643ce1660f36088d5229f785ff8ad00874631a3e049de40af08

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            30820882e64ad5cdc9d3c71a19bd9abb

            SHA1

            87a75d03a8e00478f753e7f016b1fb569559b50c

            SHA256

            267f0a0b6b419d8ab34e9d32fcfa4a348b25eb90c0a027fb4350a20d31118ea3

            SHA512

            1048a84c47caa853cd4daa064ca3f897f1604087ae5be7a22e3e03fdeff697883f0797d2fa9ab643ce1660f36088d5229f785ff8ad00874631a3e049de40af08

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            547b73969721bfa9ec86df09dd8befce

            SHA1

            60ae3ed0bc662d95d55c4ee13fc6a9128776bc6f

            SHA256

            f2376ff0f9fa62ff12bacbedae23788e399cd278edf714875558b72414fbfaf3

            SHA512

            3dc6d04c34f54ea39b1e4025bf8c6a57eae7bda17d2ee0fc9007028cff433f9894f1880a2caf47891aedaf47b462547326f4aa1397cac460c2901e241f14f5bc

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            547b73969721bfa9ec86df09dd8befce

            SHA1

            60ae3ed0bc662d95d55c4ee13fc6a9128776bc6f

            SHA256

            f2376ff0f9fa62ff12bacbedae23788e399cd278edf714875558b72414fbfaf3

            SHA512

            3dc6d04c34f54ea39b1e4025bf8c6a57eae7bda17d2ee0fc9007028cff433f9894f1880a2caf47891aedaf47b462547326f4aa1397cac460c2901e241f14f5bc

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            547b73969721bfa9ec86df09dd8befce

            SHA1

            60ae3ed0bc662d95d55c4ee13fc6a9128776bc6f

            SHA256

            f2376ff0f9fa62ff12bacbedae23788e399cd278edf714875558b72414fbfaf3

            SHA512

            3dc6d04c34f54ea39b1e4025bf8c6a57eae7bda17d2ee0fc9007028cff433f9894f1880a2caf47891aedaf47b462547326f4aa1397cac460c2901e241f14f5bc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            23075d1286f166646af3c947bbc6a164

            SHA1

            bf135cdbf23bf2496c20387af99069762feeafe2

            SHA256

            d5a5599941e247d507a40b977c896762139af7e900803f6e9a5a7e1fe6c514dd

            SHA512

            2277c101b97a67663fd912c2b5aea00b6d0fd718b172c5ec4e6947685821a85f1963a4dadbc74ad1446505e291eae4fddb452016fabcf6fb8b486d637789b6c9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            23075d1286f166646af3c947bbc6a164

            SHA1

            bf135cdbf23bf2496c20387af99069762feeafe2

            SHA256

            d5a5599941e247d507a40b977c896762139af7e900803f6e9a5a7e1fe6c514dd

            SHA512

            2277c101b97a67663fd912c2b5aea00b6d0fd718b172c5ec4e6947685821a85f1963a4dadbc74ad1446505e291eae4fddb452016fabcf6fb8b486d637789b6c9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            23075d1286f166646af3c947bbc6a164

            SHA1

            bf135cdbf23bf2496c20387af99069762feeafe2

            SHA256

            d5a5599941e247d507a40b977c896762139af7e900803f6e9a5a7e1fe6c514dd

            SHA512

            2277c101b97a67663fd912c2b5aea00b6d0fd718b172c5ec4e6947685821a85f1963a4dadbc74ad1446505e291eae4fddb452016fabcf6fb8b486d637789b6c9

          • memory/220-137-0x0000000000000000-mapping.dmp

          • memory/368-136-0x0000000000000000-mapping.dmp

          • memory/756-147-0x0000000000000000-mapping.dmp

          • memory/1648-159-0x0000000000000000-mapping.dmp

          • memory/2052-166-0x0000000000000000-mapping.dmp

          • memory/2556-142-0x0000000000000000-mapping.dmp

          • memory/3496-153-0x0000000000000000-mapping.dmp

          • memory/3976-167-0x0000000000000000-mapping.dmp

          • memory/4132-141-0x0000000000000000-mapping.dmp

          • memory/4428-140-0x0000000000000000-mapping.dmp

          • memory/4496-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4496-161-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4496-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4512-158-0x0000000000000000-mapping.dmp