Analysis

  • max time kernel
    149s
  • max time network
    177s
  • 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 10:16

General

  • Target

    a8b259fc4dde93ee3177c828de2cf006eda7d3dd920e131dfd9b45d3606e6511.exe

  • Size

    602KB

  • MD5

    4f264850bfe9aa73e205ac96da2840a1

  • SHA1

    a43bccb547da2304ed798f901566a4672116c1d2

  • SHA256

    a8b259fc4dde93ee3177c828de2cf006eda7d3dd920e131dfd9b45d3606e6511

  • SHA512

    a7fe25242a5cc39e377060b2f646dba2ea8350ded3878e810ba8e5d960ad699cbdb84afaa5192dcd58d338a2ecef45343c4e685ec3ed171eb5fc3162b04b6851

  • SSDEEP

    12288:tIny5DYTZI3ergpvvANuI0A6P20DxMEU70aBJeQ0xw1asYCy:5UTZMe83I8zDxMEU4aHIJfp

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\a8b259fc4dde93ee3177c828de2cf006eda7d3dd920e131dfd9b45d3606e6511.exe
    "C:\Users\Admin\AppData\Local\Temp\a8b259fc4dde93ee3177c828de2cf006eda7d3dd920e131dfd9b45d3606e6511.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:4008
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1552
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4260
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3476
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2556
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:100
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3816
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4300
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1772
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3952
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3700
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4316
          • 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:792
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1328

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc98F6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9401edfd11c5800026d02851d81fc17f

            SHA1

            a366ab864e255308a4e54c0538966645bc630554

            SHA256

            65a940552e44cf7cc77d065618d1954290a9025e5fa785241cda4471cab39a7c

            SHA512

            bc4bb032ac854c86012fdaf15664dc56f59c18677fc3b7111aa4937480f6794681f2739560733eac2542f4326c12fb9d9543a7e9c0e2d9a2db3a45a1fa4d3767

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9401edfd11c5800026d02851d81fc17f

            SHA1

            a366ab864e255308a4e54c0538966645bc630554

            SHA256

            65a940552e44cf7cc77d065618d1954290a9025e5fa785241cda4471cab39a7c

            SHA512

            bc4bb032ac854c86012fdaf15664dc56f59c18677fc3b7111aa4937480f6794681f2739560733eac2542f4326c12fb9d9543a7e9c0e2d9a2db3a45a1fa4d3767

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9401edfd11c5800026d02851d81fc17f

            SHA1

            a366ab864e255308a4e54c0538966645bc630554

            SHA256

            65a940552e44cf7cc77d065618d1954290a9025e5fa785241cda4471cab39a7c

            SHA512

            bc4bb032ac854c86012fdaf15664dc56f59c18677fc3b7111aa4937480f6794681f2739560733eac2542f4326c12fb9d9543a7e9c0e2d9a2db3a45a1fa4d3767

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9401edfd11c5800026d02851d81fc17f

            SHA1

            a366ab864e255308a4e54c0538966645bc630554

            SHA256

            65a940552e44cf7cc77d065618d1954290a9025e5fa785241cda4471cab39a7c

            SHA512

            bc4bb032ac854c86012fdaf15664dc56f59c18677fc3b7111aa4937480f6794681f2739560733eac2542f4326c12fb9d9543a7e9c0e2d9a2db3a45a1fa4d3767

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            24464035e3e21b037dcee5d979ceb1f4

            SHA1

            4dae4d881d4f73dae35c51521c24488033b95ab6

            SHA256

            83b5f685d7781b5b2e417928413f8a40c49a9fca8791511816681ce5c4dc28d3

            SHA512

            ec52796e4e629799f20f52481f73ed72f8244f59e8253502f5ddbe3358c304a1b4c20005570ff0c196a7c4296bd2dcc87775325b888a69d15afd06c7def8fcfd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            24464035e3e21b037dcee5d979ceb1f4

            SHA1

            4dae4d881d4f73dae35c51521c24488033b95ab6

            SHA256

            83b5f685d7781b5b2e417928413f8a40c49a9fca8791511816681ce5c4dc28d3

            SHA512

            ec52796e4e629799f20f52481f73ed72f8244f59e8253502f5ddbe3358c304a1b4c20005570ff0c196a7c4296bd2dcc87775325b888a69d15afd06c7def8fcfd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            24464035e3e21b037dcee5d979ceb1f4

            SHA1

            4dae4d881d4f73dae35c51521c24488033b95ab6

            SHA256

            83b5f685d7781b5b2e417928413f8a40c49a9fca8791511816681ce5c4dc28d3

            SHA512

            ec52796e4e629799f20f52481f73ed72f8244f59e8253502f5ddbe3358c304a1b4c20005570ff0c196a7c4296bd2dcc87775325b888a69d15afd06c7def8fcfd

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d5072348fd4bdff2378cfdd038e52edd

            SHA1

            3d935176f28d55a13118202b6f9cfafb22f7f4de

            SHA256

            0adf76e1eafb3f858714c9e2d0dc43ed723d336cf2a508c958b178c3eea4f79c

            SHA512

            5e21b7a748be4e1b60a058e6094db0ab665d490772bafa761edc49007d1b0e5d7002b475cbc31ff8079b1405de32b3497c2f016694c858a155186305684382bb

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d5072348fd4bdff2378cfdd038e52edd

            SHA1

            3d935176f28d55a13118202b6f9cfafb22f7f4de

            SHA256

            0adf76e1eafb3f858714c9e2d0dc43ed723d336cf2a508c958b178c3eea4f79c

            SHA512

            5e21b7a748be4e1b60a058e6094db0ab665d490772bafa761edc49007d1b0e5d7002b475cbc31ff8079b1405de32b3497c2f016694c858a155186305684382bb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a181b275613b6906572fa1aca726faa8

            SHA1

            2f1d7e7adc48e5b72597957d8d5111c14b26b0d9

            SHA256

            5eebadb3186f5e4c31cae78dc60718962d0e09a7f2c02120cf64e162ad030952

            SHA512

            32dae9c4b2919c515ea7f68578db4c641c4a0e4a424f0548ef992a8c542e6e1c25ba930e6f13aecea0794053b8fb1c5a7d42a59d6b6357ab5b932cfa6f551dd2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a181b275613b6906572fa1aca726faa8

            SHA1

            2f1d7e7adc48e5b72597957d8d5111c14b26b0d9

            SHA256

            5eebadb3186f5e4c31cae78dc60718962d0e09a7f2c02120cf64e162ad030952

            SHA512

            32dae9c4b2919c515ea7f68578db4c641c4a0e4a424f0548ef992a8c542e6e1c25ba930e6f13aecea0794053b8fb1c5a7d42a59d6b6357ab5b932cfa6f551dd2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a181b275613b6906572fa1aca726faa8

            SHA1

            2f1d7e7adc48e5b72597957d8d5111c14b26b0d9

            SHA256

            5eebadb3186f5e4c31cae78dc60718962d0e09a7f2c02120cf64e162ad030952

            SHA512

            32dae9c4b2919c515ea7f68578db4c641c4a0e4a424f0548ef992a8c542e6e1c25ba930e6f13aecea0794053b8fb1c5a7d42a59d6b6357ab5b932cfa6f551dd2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            dbdd85fc086ab1e74c5de829b365f831

            SHA1

            6f4030dee30804da762c1568c5a86bf03594e1b5

            SHA256

            3328efdd64797bc8be8338252716ebd3ab87c780f78ad48e66c2df22a36f691d

            SHA512

            b8c1f8a58b582fc7670f03bd1d54f821ee2d4bb85ad5f7eff88c747a321729e4add5053bc86857deaf01ef680a11ae0c59fb9a2e344e0581bb8f75809b39ceea

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            dbdd85fc086ab1e74c5de829b365f831

            SHA1

            6f4030dee30804da762c1568c5a86bf03594e1b5

            SHA256

            3328efdd64797bc8be8338252716ebd3ab87c780f78ad48e66c2df22a36f691d

            SHA512

            b8c1f8a58b582fc7670f03bd1d54f821ee2d4bb85ad5f7eff88c747a321729e4add5053bc86857deaf01ef680a11ae0c59fb9a2e344e0581bb8f75809b39ceea

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            dbdd85fc086ab1e74c5de829b365f831

            SHA1

            6f4030dee30804da762c1568c5a86bf03594e1b5

            SHA256

            3328efdd64797bc8be8338252716ebd3ab87c780f78ad48e66c2df22a36f691d

            SHA512

            b8c1f8a58b582fc7670f03bd1d54f821ee2d4bb85ad5f7eff88c747a321729e4add5053bc86857deaf01ef680a11ae0c59fb9a2e344e0581bb8f75809b39ceea

          • memory/100-142-0x0000000000000000-mapping.dmp

          • memory/1552-136-0x0000000000000000-mapping.dmp

          • memory/1772-158-0x0000000000000000-mapping.dmp

          • memory/2556-141-0x0000000000000000-mapping.dmp

          • memory/3476-140-0x0000000000000000-mapping.dmp

          • memory/3700-165-0x0000000000000000-mapping.dmp

          • memory/3816-147-0x0000000000000000-mapping.dmp

          • memory/3952-159-0x0000000000000000-mapping.dmp

          • memory/4008-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4008-166-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4008-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4260-137-0x0000000000000000-mapping.dmp

          • memory/4300-153-0x0000000000000000-mapping.dmp

          • memory/4316-167-0x0000000000000000-mapping.dmp