Analysis

  • max time kernel
    112s
  • max time network
    137s
  • 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 10:23

General

  • Target

    6d5b6ebf118c4538c333a644bb7e45c161f8c5e7a6ba2f564d6d66120d0620b8.exe

  • Size

    602KB

  • MD5

    bb5ef1ac9a3b91ea751358e30e9348a8

  • SHA1

    999aa90d7d7c56de573d4418fa57eb20203c9e55

  • SHA256

    6d5b6ebf118c4538c333a644bb7e45c161f8c5e7a6ba2f564d6d66120d0620b8

  • SHA512

    2246e413937f3289853eeaab2f16cc88c60f5ba1aca59b1bfcbb2363dedd0385531a663bb27b94e2ccd49f99f168e7bc116ea938987b6652decc855af48db196

  • SSDEEP

    12288:zIny5DYTjpJmdsGD/6GOOc9EwMxDnpX1vllhysa+cC0:bUTjpJujsOcHytFPhy8cj

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\6d5b6ebf118c4538c333a644bb7e45c161f8c5e7a6ba2f564d6d66120d0620b8.exe
    "C:\Users\Admin\AppData\Local\Temp\6d5b6ebf118c4538c333a644bb7e45c161f8c5e7a6ba2f564d6d66120d0620b8.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:4152
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4568
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:5104
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3504
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:5108
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2384
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3572
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3940
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4560
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1352
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1296
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1480
          • 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:3628
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2824

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsaEF58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ed3817e9f1bb2b991433e37f81553e51

            SHA1

            d6ce2ec249fd034abc58e9c319c3c17829c4f51f

            SHA256

            f09fe5457266265bee5f589ce0c8d12aa1e84a29fef06c0f5dda34dd2aba2040

            SHA512

            e4d3373223558ae277f7f9a41d7ec6588268375ef341d996b93504f3a5724b7f6ce00804b36355d532cd2609b6a3b719b7c7b61471596ea0c5b21f94ddd36439

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ed3817e9f1bb2b991433e37f81553e51

            SHA1

            d6ce2ec249fd034abc58e9c319c3c17829c4f51f

            SHA256

            f09fe5457266265bee5f589ce0c8d12aa1e84a29fef06c0f5dda34dd2aba2040

            SHA512

            e4d3373223558ae277f7f9a41d7ec6588268375ef341d996b93504f3a5724b7f6ce00804b36355d532cd2609b6a3b719b7c7b61471596ea0c5b21f94ddd36439

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ed3817e9f1bb2b991433e37f81553e51

            SHA1

            d6ce2ec249fd034abc58e9c319c3c17829c4f51f

            SHA256

            f09fe5457266265bee5f589ce0c8d12aa1e84a29fef06c0f5dda34dd2aba2040

            SHA512

            e4d3373223558ae277f7f9a41d7ec6588268375ef341d996b93504f3a5724b7f6ce00804b36355d532cd2609b6a3b719b7c7b61471596ea0c5b21f94ddd36439

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ed3817e9f1bb2b991433e37f81553e51

            SHA1

            d6ce2ec249fd034abc58e9c319c3c17829c4f51f

            SHA256

            f09fe5457266265bee5f589ce0c8d12aa1e84a29fef06c0f5dda34dd2aba2040

            SHA512

            e4d3373223558ae277f7f9a41d7ec6588268375ef341d996b93504f3a5724b7f6ce00804b36355d532cd2609b6a3b719b7c7b61471596ea0c5b21f94ddd36439

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            590c17b4fc405857413e35d72b55f431

            SHA1

            2bb852ac477284fb3686ab4e85bcfbc919364802

            SHA256

            8a3d6eb91fc41436c2b93f2f00256b6ebe61196079e904c9ac5f02367e6130e3

            SHA512

            4433e2196770bd07fa2242dc987dc9af6a9245750badaebcad47a4413880391d05c8d0a4fb7ecc8c0dff26b0e788f58906d37f261656541043ad2155a82ff87e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            590c17b4fc405857413e35d72b55f431

            SHA1

            2bb852ac477284fb3686ab4e85bcfbc919364802

            SHA256

            8a3d6eb91fc41436c2b93f2f00256b6ebe61196079e904c9ac5f02367e6130e3

            SHA512

            4433e2196770bd07fa2242dc987dc9af6a9245750badaebcad47a4413880391d05c8d0a4fb7ecc8c0dff26b0e788f58906d37f261656541043ad2155a82ff87e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            590c17b4fc405857413e35d72b55f431

            SHA1

            2bb852ac477284fb3686ab4e85bcfbc919364802

            SHA256

            8a3d6eb91fc41436c2b93f2f00256b6ebe61196079e904c9ac5f02367e6130e3

            SHA512

            4433e2196770bd07fa2242dc987dc9af6a9245750badaebcad47a4413880391d05c8d0a4fb7ecc8c0dff26b0e788f58906d37f261656541043ad2155a82ff87e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            48f91dfb5c1c002bfd021f67dc2d0890

            SHA1

            c5b948bf19a031d5bafbff25dc8c9b72dc9d9d18

            SHA256

            98ff183491ff1a1b6536ec5b208a95b7372b9d99d8c8e662fc989b5627f9c656

            SHA512

            8d244a385cc655a8216f1abba4caf8ad03b7770e324b3d8fe58d2897cf9b9674ae55c6fc60909b8f0d92d7046d41d45140b476e51d680672e9d533687cdc6174

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            48f91dfb5c1c002bfd021f67dc2d0890

            SHA1

            c5b948bf19a031d5bafbff25dc8c9b72dc9d9d18

            SHA256

            98ff183491ff1a1b6536ec5b208a95b7372b9d99d8c8e662fc989b5627f9c656

            SHA512

            8d244a385cc655a8216f1abba4caf8ad03b7770e324b3d8fe58d2897cf9b9674ae55c6fc60909b8f0d92d7046d41d45140b476e51d680672e9d533687cdc6174

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3e4b62cc16a17f52a1c57a3474ef8b43

            SHA1

            23047421cd760fe9d6ad39b46c390caa023bcf0b

            SHA256

            3b4072c3fbaacc4d5028ec21f38ea38ce5ad135a2680a8a4da925d9dede61ac9

            SHA512

            e44adf2ccfd7ba3607e070725f86f0c8f3dc6763fb29e5ffd7ce15f09fc7a0ed18f22723f468e49b82f9a77f01205706c4626b1e167a0fd572bfb4de043f9fda

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3e4b62cc16a17f52a1c57a3474ef8b43

            SHA1

            23047421cd760fe9d6ad39b46c390caa023bcf0b

            SHA256

            3b4072c3fbaacc4d5028ec21f38ea38ce5ad135a2680a8a4da925d9dede61ac9

            SHA512

            e44adf2ccfd7ba3607e070725f86f0c8f3dc6763fb29e5ffd7ce15f09fc7a0ed18f22723f468e49b82f9a77f01205706c4626b1e167a0fd572bfb4de043f9fda

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3e4b62cc16a17f52a1c57a3474ef8b43

            SHA1

            23047421cd760fe9d6ad39b46c390caa023bcf0b

            SHA256

            3b4072c3fbaacc4d5028ec21f38ea38ce5ad135a2680a8a4da925d9dede61ac9

            SHA512

            e44adf2ccfd7ba3607e070725f86f0c8f3dc6763fb29e5ffd7ce15f09fc7a0ed18f22723f468e49b82f9a77f01205706c4626b1e167a0fd572bfb4de043f9fda

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            6f38d7b2e6a664ded15429a192898591

            SHA1

            4301a52fde1a18f11490d147bf731b433fbcbd23

            SHA256

            55bce25ceb2fcebc0736fa42d469c1adbe55b62022851a5f5c38c38386cad4ac

            SHA512

            b8bfa308164e9a8550fe7f9c5788597074a3332bc1bf2e33c73ce9cbe6434e42c774b002386ac9fb06c472f5b452c38bc424d19099febc85caa7b2049aea0cb6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            6f38d7b2e6a664ded15429a192898591

            SHA1

            4301a52fde1a18f11490d147bf731b433fbcbd23

            SHA256

            55bce25ceb2fcebc0736fa42d469c1adbe55b62022851a5f5c38c38386cad4ac

            SHA512

            b8bfa308164e9a8550fe7f9c5788597074a3332bc1bf2e33c73ce9cbe6434e42c774b002386ac9fb06c472f5b452c38bc424d19099febc85caa7b2049aea0cb6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            6f38d7b2e6a664ded15429a192898591

            SHA1

            4301a52fde1a18f11490d147bf731b433fbcbd23

            SHA256

            55bce25ceb2fcebc0736fa42d469c1adbe55b62022851a5f5c38c38386cad4ac

            SHA512

            b8bfa308164e9a8550fe7f9c5788597074a3332bc1bf2e33c73ce9cbe6434e42c774b002386ac9fb06c472f5b452c38bc424d19099febc85caa7b2049aea0cb6

          • memory/1296-165-0x0000000000000000-mapping.dmp

          • memory/1352-159-0x0000000000000000-mapping.dmp

          • memory/1480-166-0x0000000000000000-mapping.dmp

          • memory/2384-142-0x0000000000000000-mapping.dmp

          • memory/3504-140-0x0000000000000000-mapping.dmp

          • memory/3572-147-0x0000000000000000-mapping.dmp

          • memory/3940-153-0x0000000000000000-mapping.dmp

          • memory/4152-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4152-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4560-158-0x0000000000000000-mapping.dmp

          • memory/4568-136-0x0000000000000000-mapping.dmp

          • memory/5104-137-0x0000000000000000-mapping.dmp

          • memory/5108-141-0x0000000000000000-mapping.dmp