Analysis

  • max time kernel
    91s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:15

General

  • Target

    ab921ca77da26ce8602eee4a1109bd72f747e8b46ef194a6a112295ba7717e9c.exe

  • Size

    603KB

  • MD5

    bbc2ec266270d20670d6d20c0679471f

  • SHA1

    aeede3d1b36364a11839ac0157af5463af0ea6a2

  • SHA256

    ab921ca77da26ce8602eee4a1109bd72f747e8b46ef194a6a112295ba7717e9c

  • SHA512

    68eae7b629009ab3e22c46693815d90fbf3e90ce05648a00a0f6ca15f57552f87bcf93293501cd41d36de889d18545fbd52b4a7d5b481551c3a93cadd02cdfbb

  • SSDEEP

    12288:pIny5DYTwJtntyR9E1syNu4yX5dx5Tkyj/4K:FUTWtn4R9HHFZTkq/4K

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\ab921ca77da26ce8602eee4a1109bd72f747e8b46ef194a6a112295ba7717e9c.exe
    "C:\Users\Admin\AppData\Local\Temp\ab921ca77da26ce8602eee4a1109bd72f747e8b46ef194a6a112295ba7717e9c.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:1436
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3888
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4280
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2068
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4136
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4312
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2032
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:216
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4816
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4856
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:5080
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4900
          • 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:2212
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2052

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslB117.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2d3c0bb683adc241ac45acc53ba47dfe

            SHA1

            f244645b7b3886b62db9da701f5b564df868a987

            SHA256

            c0e8e288d99312e6f04f0f8d708818a65e91baa4683238209ed3611ee22efd59

            SHA512

            708639c9f41614a9defb066a44f00dbd22c5efbc9c201210d2f8b54bdd531157d64cf38b8bcb64d1ffd301fc1839786207190d7bc3e3f3ac3f584161c23df6e4

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2d3c0bb683adc241ac45acc53ba47dfe

            SHA1

            f244645b7b3886b62db9da701f5b564df868a987

            SHA256

            c0e8e288d99312e6f04f0f8d708818a65e91baa4683238209ed3611ee22efd59

            SHA512

            708639c9f41614a9defb066a44f00dbd22c5efbc9c201210d2f8b54bdd531157d64cf38b8bcb64d1ffd301fc1839786207190d7bc3e3f3ac3f584161c23df6e4

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2d3c0bb683adc241ac45acc53ba47dfe

            SHA1

            f244645b7b3886b62db9da701f5b564df868a987

            SHA256

            c0e8e288d99312e6f04f0f8d708818a65e91baa4683238209ed3611ee22efd59

            SHA512

            708639c9f41614a9defb066a44f00dbd22c5efbc9c201210d2f8b54bdd531157d64cf38b8bcb64d1ffd301fc1839786207190d7bc3e3f3ac3f584161c23df6e4

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2d3c0bb683adc241ac45acc53ba47dfe

            SHA1

            f244645b7b3886b62db9da701f5b564df868a987

            SHA256

            c0e8e288d99312e6f04f0f8d708818a65e91baa4683238209ed3611ee22efd59

            SHA512

            708639c9f41614a9defb066a44f00dbd22c5efbc9c201210d2f8b54bdd531157d64cf38b8bcb64d1ffd301fc1839786207190d7bc3e3f3ac3f584161c23df6e4

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            0ad9b9ad12e36f43c29c8a46e233b5e1

            SHA1

            1e323f5e606a070fd4396144fde3f55024643b65

            SHA256

            aaf484110eb1e3d6437983909ac7b9e5b8dd4519707dead040024d638ec07c56

            SHA512

            3689d0abbadee826131ded9cd387a7c9b8dac710a57a03a52a2b6ca779cc912edc1d27022d503cbe9bcfefac0892066dfaf6dabd47ab46c20bc72106337fa5c8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            0ad9b9ad12e36f43c29c8a46e233b5e1

            SHA1

            1e323f5e606a070fd4396144fde3f55024643b65

            SHA256

            aaf484110eb1e3d6437983909ac7b9e5b8dd4519707dead040024d638ec07c56

            SHA512

            3689d0abbadee826131ded9cd387a7c9b8dac710a57a03a52a2b6ca779cc912edc1d27022d503cbe9bcfefac0892066dfaf6dabd47ab46c20bc72106337fa5c8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            0ad9b9ad12e36f43c29c8a46e233b5e1

            SHA1

            1e323f5e606a070fd4396144fde3f55024643b65

            SHA256

            aaf484110eb1e3d6437983909ac7b9e5b8dd4519707dead040024d638ec07c56

            SHA512

            3689d0abbadee826131ded9cd387a7c9b8dac710a57a03a52a2b6ca779cc912edc1d27022d503cbe9bcfefac0892066dfaf6dabd47ab46c20bc72106337fa5c8

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            bd534e6fa26da3bb87cd9e1f2cd7967a

            SHA1

            bf6006d128d5d7ef8e2633430dc02c790a4e9e96

            SHA256

            1ceef17466c53dbe40774f7559175e607a1ca793a38cc528f50ffdb8095144cf

            SHA512

            a21b884a8ddff39d2617c887d3955f8672dea7de87fb010f241a4c933ea948f8a9974b9425dc74bfe8f3fe7da691b2f34ae13444e787cf384f13ce5f069d26a9

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            bd534e6fa26da3bb87cd9e1f2cd7967a

            SHA1

            bf6006d128d5d7ef8e2633430dc02c790a4e9e96

            SHA256

            1ceef17466c53dbe40774f7559175e607a1ca793a38cc528f50ffdb8095144cf

            SHA512

            a21b884a8ddff39d2617c887d3955f8672dea7de87fb010f241a4c933ea948f8a9974b9425dc74bfe8f3fe7da691b2f34ae13444e787cf384f13ce5f069d26a9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5c2eb976c77eeca14489b670b3a16d3e

            SHA1

            e4696521511d88f901c40032cadaa1c4859edfd4

            SHA256

            fb3eb494657053a9124ff12be874dddaf25cec236c2561ae920e4bd3c3717b4b

            SHA512

            3b301e32083083907fc8500021a6987e975a2dc20e081702e3b5f1f8ad9dbb0faf3ab87ab093c4cc78f274ea291f967dfb6948bda59af6cc1a5ba31f67844242

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5c2eb976c77eeca14489b670b3a16d3e

            SHA1

            e4696521511d88f901c40032cadaa1c4859edfd4

            SHA256

            fb3eb494657053a9124ff12be874dddaf25cec236c2561ae920e4bd3c3717b4b

            SHA512

            3b301e32083083907fc8500021a6987e975a2dc20e081702e3b5f1f8ad9dbb0faf3ab87ab093c4cc78f274ea291f967dfb6948bda59af6cc1a5ba31f67844242

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5c2eb976c77eeca14489b670b3a16d3e

            SHA1

            e4696521511d88f901c40032cadaa1c4859edfd4

            SHA256

            fb3eb494657053a9124ff12be874dddaf25cec236c2561ae920e4bd3c3717b4b

            SHA512

            3b301e32083083907fc8500021a6987e975a2dc20e081702e3b5f1f8ad9dbb0faf3ab87ab093c4cc78f274ea291f967dfb6948bda59af6cc1a5ba31f67844242

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b9987a57cb7a1dad296c6d196a50140e

            SHA1

            241e5445b9c028aba32c7c3d1655644ae77d7507

            SHA256

            817dc21ca499c37573eb4e38e1a1bb09fa67aacc6da79ea03e1b68df232273d6

            SHA512

            558c084185ac2f71a6de4c1ef949254881c1d47c7ce38af6ce8b9d933bd67b87e4af82991e21a3f6ab509213cc8aded4969a2befc0f8bea8b86da5c86fde193d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b9987a57cb7a1dad296c6d196a50140e

            SHA1

            241e5445b9c028aba32c7c3d1655644ae77d7507

            SHA256

            817dc21ca499c37573eb4e38e1a1bb09fa67aacc6da79ea03e1b68df232273d6

            SHA512

            558c084185ac2f71a6de4c1ef949254881c1d47c7ce38af6ce8b9d933bd67b87e4af82991e21a3f6ab509213cc8aded4969a2befc0f8bea8b86da5c86fde193d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b9987a57cb7a1dad296c6d196a50140e

            SHA1

            241e5445b9c028aba32c7c3d1655644ae77d7507

            SHA256

            817dc21ca499c37573eb4e38e1a1bb09fa67aacc6da79ea03e1b68df232273d6

            SHA512

            558c084185ac2f71a6de4c1ef949254881c1d47c7ce38af6ce8b9d933bd67b87e4af82991e21a3f6ab509213cc8aded4969a2befc0f8bea8b86da5c86fde193d

          • memory/216-154-0x0000000000000000-mapping.dmp

          • memory/1436-146-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1436-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1436-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2032-148-0x0000000000000000-mapping.dmp

          • memory/2068-140-0x0000000000000000-mapping.dmp

          • memory/3888-136-0x0000000000000000-mapping.dmp

          • memory/4136-141-0x0000000000000000-mapping.dmp

          • memory/4280-137-0x0000000000000000-mapping.dmp

          • memory/4312-142-0x0000000000000000-mapping.dmp

          • memory/4816-159-0x0000000000000000-mapping.dmp

          • memory/4856-160-0x0000000000000000-mapping.dmp

          • memory/4900-167-0x0000000000000000-mapping.dmp

          • memory/5080-166-0x0000000000000000-mapping.dmp