Analysis

  • max time kernel
    185s
  • max time network
    203s
  • 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 10:18

General

  • Target

    9794eb7332550ca12defc9f7b8d1839979dd4b667c43f070861ee4925b98f982.exe

  • Size

    599KB

  • MD5

    b41bfb1c6087ad61a0470607db0745c7

  • SHA1

    bd5d7e6eb39046075fc61260f50a071ec4957925

  • SHA256

    9794eb7332550ca12defc9f7b8d1839979dd4b667c43f070861ee4925b98f982

  • SHA512

    df0cd2c07b2552148ff65a5543afd79c86faa43510635810b068101a6522999bf37e665952de02be23388f30de0b8db8cd1981ea5b4cd174dfa66b4531909fa8

  • SSDEEP

    12288:5Iny5DYT2RYBbN/Ku0oo8hDyF3kPdlAw6O9ZRXptVVGJiLU5:1UTXbNyHoPDZdlAw6UHpIi

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\9794eb7332550ca12defc9f7b8d1839979dd4b667c43f070861ee4925b98f982.exe
    "C:\Users\Admin\AppData\Local\Temp\9794eb7332550ca12defc9f7b8d1839979dd4b667c43f070861ee4925b98f982.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:4672
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4308
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1268
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1220
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1452
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3772
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2164
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3784
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1348
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2980
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1080
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:780
          • 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:4552
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4740

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf6033.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            12abb9cc99f83533b0ec8d92a5ddda4b

            SHA1

            34506916f80696ab864dfd95dacf51388a33410e

            SHA256

            761632f91e0c34c50a13acc485288d58c8dd5e4c278514cb7d6c60925147f9b0

            SHA512

            cf2a9e0a40fca936b6816c26398be27af9cda4f74e27a04176490e3565209270bddfcb927b67f6bb6d73b12ec7a7d9bb8838c22fcbfa638efe6e7c1b140d042a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            12abb9cc99f83533b0ec8d92a5ddda4b

            SHA1

            34506916f80696ab864dfd95dacf51388a33410e

            SHA256

            761632f91e0c34c50a13acc485288d58c8dd5e4c278514cb7d6c60925147f9b0

            SHA512

            cf2a9e0a40fca936b6816c26398be27af9cda4f74e27a04176490e3565209270bddfcb927b67f6bb6d73b12ec7a7d9bb8838c22fcbfa638efe6e7c1b140d042a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            12abb9cc99f83533b0ec8d92a5ddda4b

            SHA1

            34506916f80696ab864dfd95dacf51388a33410e

            SHA256

            761632f91e0c34c50a13acc485288d58c8dd5e4c278514cb7d6c60925147f9b0

            SHA512

            cf2a9e0a40fca936b6816c26398be27af9cda4f74e27a04176490e3565209270bddfcb927b67f6bb6d73b12ec7a7d9bb8838c22fcbfa638efe6e7c1b140d042a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            12abb9cc99f83533b0ec8d92a5ddda4b

            SHA1

            34506916f80696ab864dfd95dacf51388a33410e

            SHA256

            761632f91e0c34c50a13acc485288d58c8dd5e4c278514cb7d6c60925147f9b0

            SHA512

            cf2a9e0a40fca936b6816c26398be27af9cda4f74e27a04176490e3565209270bddfcb927b67f6bb6d73b12ec7a7d9bb8838c22fcbfa638efe6e7c1b140d042a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3d7a7cdeac14d44d6155ec0a0d4b0ee6

            SHA1

            d4e303ee2038b8d342b88667750dd37f91186c87

            SHA256

            22a3f43af1669dee5efb097627219adf2fbad54baa696db646d130e3de28faaa

            SHA512

            236c46e1b42d78f965247eb53f311e067ed6ca2a382a9f07a50d69f6d5b92a5b8a74f1f1cec77597eb1c09e73b6dad4a915c59f861b9bfff375a3dd5ba6fbc92

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3d7a7cdeac14d44d6155ec0a0d4b0ee6

            SHA1

            d4e303ee2038b8d342b88667750dd37f91186c87

            SHA256

            22a3f43af1669dee5efb097627219adf2fbad54baa696db646d130e3de28faaa

            SHA512

            236c46e1b42d78f965247eb53f311e067ed6ca2a382a9f07a50d69f6d5b92a5b8a74f1f1cec77597eb1c09e73b6dad4a915c59f861b9bfff375a3dd5ba6fbc92

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3d7a7cdeac14d44d6155ec0a0d4b0ee6

            SHA1

            d4e303ee2038b8d342b88667750dd37f91186c87

            SHA256

            22a3f43af1669dee5efb097627219adf2fbad54baa696db646d130e3de28faaa

            SHA512

            236c46e1b42d78f965247eb53f311e067ed6ca2a382a9f07a50d69f6d5b92a5b8a74f1f1cec77597eb1c09e73b6dad4a915c59f861b9bfff375a3dd5ba6fbc92

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c6d6ade0bd489e19bfb15cc574373da3

            SHA1

            fe729481b07d99dfb91c31637cd5d57765bf5ede

            SHA256

            15b936c464f1ca37bf3efd2158cae09a870f3ad2f795bdaf3e564776f5026ec2

            SHA512

            0c5c7bdd1ad8c4140017dc82c09d269243516f0b0354076084d47f346a5e7fb05542644870078fc4ab77b16206793e03a0df26c039eea4f279287280107fdcef

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c6d6ade0bd489e19bfb15cc574373da3

            SHA1

            fe729481b07d99dfb91c31637cd5d57765bf5ede

            SHA256

            15b936c464f1ca37bf3efd2158cae09a870f3ad2f795bdaf3e564776f5026ec2

            SHA512

            0c5c7bdd1ad8c4140017dc82c09d269243516f0b0354076084d47f346a5e7fb05542644870078fc4ab77b16206793e03a0df26c039eea4f279287280107fdcef

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4675ee9785013d86509d303d8e48c0f0

            SHA1

            c630b27d40ba252b3a1996084b6bbc361b7dd4df

            SHA256

            520d6fdb8185aea2d3d2568a7c28d0ddd425e0bfd51ab7d46bf621e749ecc8c5

            SHA512

            28955c0ce1659d3a733c091d486d556575890b9831b82677556a778fa54ffdfeaf91f1b85e36cb7cc6514df486cf2e7dd577d4b07b268bc69427f1fbb5cf08e8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4675ee9785013d86509d303d8e48c0f0

            SHA1

            c630b27d40ba252b3a1996084b6bbc361b7dd4df

            SHA256

            520d6fdb8185aea2d3d2568a7c28d0ddd425e0bfd51ab7d46bf621e749ecc8c5

            SHA512

            28955c0ce1659d3a733c091d486d556575890b9831b82677556a778fa54ffdfeaf91f1b85e36cb7cc6514df486cf2e7dd577d4b07b268bc69427f1fbb5cf08e8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4675ee9785013d86509d303d8e48c0f0

            SHA1

            c630b27d40ba252b3a1996084b6bbc361b7dd4df

            SHA256

            520d6fdb8185aea2d3d2568a7c28d0ddd425e0bfd51ab7d46bf621e749ecc8c5

            SHA512

            28955c0ce1659d3a733c091d486d556575890b9831b82677556a778fa54ffdfeaf91f1b85e36cb7cc6514df486cf2e7dd577d4b07b268bc69427f1fbb5cf08e8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d68583a2cc719ed95bb02b9603e9faf

            SHA1

            f72ee4b038443c98cccee73988098865305bd7f9

            SHA256

            5f5b960e819da0bdd5c1a96f43ff5b87fcb880cdd3413b46e827fc0f9835d450

            SHA512

            5bfb333fe567341ef744d98a372ed075c818d5259d1d2459094309055a9121e0bfd217b5e4d4428d4296889fa0a4bea1165165ca3c50ad3e393ada8e4bb951fa

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d68583a2cc719ed95bb02b9603e9faf

            SHA1

            f72ee4b038443c98cccee73988098865305bd7f9

            SHA256

            5f5b960e819da0bdd5c1a96f43ff5b87fcb880cdd3413b46e827fc0f9835d450

            SHA512

            5bfb333fe567341ef744d98a372ed075c818d5259d1d2459094309055a9121e0bfd217b5e4d4428d4296889fa0a4bea1165165ca3c50ad3e393ada8e4bb951fa

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d68583a2cc719ed95bb02b9603e9faf

            SHA1

            f72ee4b038443c98cccee73988098865305bd7f9

            SHA256

            5f5b960e819da0bdd5c1a96f43ff5b87fcb880cdd3413b46e827fc0f9835d450

            SHA512

            5bfb333fe567341ef744d98a372ed075c818d5259d1d2459094309055a9121e0bfd217b5e4d4428d4296889fa0a4bea1165165ca3c50ad3e393ada8e4bb951fa

          • memory/780-170-0x0000000000000000-mapping.dmp

          • memory/1080-169-0x0000000000000000-mapping.dmp

          • memory/1220-143-0x0000000000000000-mapping.dmp

          • memory/1268-140-0x0000000000000000-mapping.dmp

          • memory/1348-161-0x0000000000000000-mapping.dmp

          • memory/1452-144-0x0000000000000000-mapping.dmp

          • memory/2164-150-0x0000000000000000-mapping.dmp

          • memory/2980-163-0x0000000000000000-mapping.dmp

          • memory/3772-145-0x0000000000000000-mapping.dmp

          • memory/3784-156-0x0000000000000000-mapping.dmp

          • memory/4308-139-0x0000000000000000-mapping.dmp

          • memory/4672-162-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4672-135-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4672-172-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB