Analysis

  • max time kernel
    106s
  • max time network
    151s
  • 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 10:26

General

  • Target

    4b48c6dcb4fde3875ad142d4995f9d94c110bce3a17e79033f112bdbf630b696.exe

  • Size

    602KB

  • MD5

    ba93e6c1a18d930194ea2137fae27949

  • SHA1

    39e8f5084f803f620666885860a7b30f3067b6ac

  • SHA256

    4b48c6dcb4fde3875ad142d4995f9d94c110bce3a17e79033f112bdbf630b696

  • SHA512

    719f50190ab665bcb54d966c22ede3a19741e148382a7777aba3e0483aa834be14a601f224102ad7dcf114455ead280e4199834d0d43e104f306d7156b275a2f

  • SSDEEP

    12288:cIny5DYTj9wW3NdJ+1UuU6foLrhkrnhlfmFMtO9yUR6BXGM:6UTjSWx+LfoL2nD+itOYU+l

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\4b48c6dcb4fde3875ad142d4995f9d94c110bce3a17e79033f112bdbf630b696.exe
    "C:\Users\Admin\AppData\Local\Temp\4b48c6dcb4fde3875ad142d4995f9d94c110bce3a17e79033f112bdbf630b696.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:1564
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3392
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4992
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:116
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:5100
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4764
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4564
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4856
        • 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:1348
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4360
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1020
          • 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:2476
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4820

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrCB75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            85dfd7c80a1472c9a56247e9ff198e53

            SHA1

            f415fd4ba07c61171a3d6b7b08e4f29c949622ac

            SHA256

            199aa9cfc96769536e011cc6eb4b5b3da814abced0710a765a106ae4379149ae

            SHA512

            48cb65b25106bccbcb99f0f744bc6bc5dcf910870bec8cf950de64cadf48429c18807c57a3a8a2e09a3869f34b2cc642305085dc90d2f92948147f58325b2e90

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            85dfd7c80a1472c9a56247e9ff198e53

            SHA1

            f415fd4ba07c61171a3d6b7b08e4f29c949622ac

            SHA256

            199aa9cfc96769536e011cc6eb4b5b3da814abced0710a765a106ae4379149ae

            SHA512

            48cb65b25106bccbcb99f0f744bc6bc5dcf910870bec8cf950de64cadf48429c18807c57a3a8a2e09a3869f34b2cc642305085dc90d2f92948147f58325b2e90

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            85dfd7c80a1472c9a56247e9ff198e53

            SHA1

            f415fd4ba07c61171a3d6b7b08e4f29c949622ac

            SHA256

            199aa9cfc96769536e011cc6eb4b5b3da814abced0710a765a106ae4379149ae

            SHA512

            48cb65b25106bccbcb99f0f744bc6bc5dcf910870bec8cf950de64cadf48429c18807c57a3a8a2e09a3869f34b2cc642305085dc90d2f92948147f58325b2e90

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            85dfd7c80a1472c9a56247e9ff198e53

            SHA1

            f415fd4ba07c61171a3d6b7b08e4f29c949622ac

            SHA256

            199aa9cfc96769536e011cc6eb4b5b3da814abced0710a765a106ae4379149ae

            SHA512

            48cb65b25106bccbcb99f0f744bc6bc5dcf910870bec8cf950de64cadf48429c18807c57a3a8a2e09a3869f34b2cc642305085dc90d2f92948147f58325b2e90

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ddf45ade8ef8e81fb8870b602d47afd4

            SHA1

            9e45b39bcccf3788035592373d185c601a23807e

            SHA256

            d07a8921dc824a4b9853e8e21e970f096e9d92af7b702c1576076f52eb13a735

            SHA512

            633de54086f77e6061412c00d142c3cdfb0fe28408107cbbfcccf64295b2a8fb60dc24486baa6fabcc8d75e3311fd9d08a17a9de9e7ed31e38243334bc5737ba

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ddf45ade8ef8e81fb8870b602d47afd4

            SHA1

            9e45b39bcccf3788035592373d185c601a23807e

            SHA256

            d07a8921dc824a4b9853e8e21e970f096e9d92af7b702c1576076f52eb13a735

            SHA512

            633de54086f77e6061412c00d142c3cdfb0fe28408107cbbfcccf64295b2a8fb60dc24486baa6fabcc8d75e3311fd9d08a17a9de9e7ed31e38243334bc5737ba

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ddf45ade8ef8e81fb8870b602d47afd4

            SHA1

            9e45b39bcccf3788035592373d185c601a23807e

            SHA256

            d07a8921dc824a4b9853e8e21e970f096e9d92af7b702c1576076f52eb13a735

            SHA512

            633de54086f77e6061412c00d142c3cdfb0fe28408107cbbfcccf64295b2a8fb60dc24486baa6fabcc8d75e3311fd9d08a17a9de9e7ed31e38243334bc5737ba

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4cfff1b7cf2c3618fd588533f2ef4c3d

            SHA1

            b7c83d3825c09eba53cca88dc84afdcfc8555b5a

            SHA256

            83fd2ab11339675656a9dfa855da62b798c20af30afe5c9d22d0546ed0fce75c

            SHA512

            a4310abbd6180c977b1cd808ac7511311be912065ded10aaf2e7776dc6d80319b765319b61eb3205188324b97bf32fcd44a3cc35303b344c19063c98befcc03b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4cfff1b7cf2c3618fd588533f2ef4c3d

            SHA1

            b7c83d3825c09eba53cca88dc84afdcfc8555b5a

            SHA256

            83fd2ab11339675656a9dfa855da62b798c20af30afe5c9d22d0546ed0fce75c

            SHA512

            a4310abbd6180c977b1cd808ac7511311be912065ded10aaf2e7776dc6d80319b765319b61eb3205188324b97bf32fcd44a3cc35303b344c19063c98befcc03b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            546c9bfcad3736191af9e3a1e307b3ac

            SHA1

            890961da388ff938631030f028acf504081eb0ce

            SHA256

            dc4a81df522c032ee784b7b17f4a64a45a33a78580bf8b083a5d89488484403c

            SHA512

            fdb9da81b4cceb8965327d02334fe2274331ae68f3f011f080d09565c19c5c8ce5cd7da5979b04e32aab035050449779f450d6e9a84bf70fedac577fcff42ac1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            546c9bfcad3736191af9e3a1e307b3ac

            SHA1

            890961da388ff938631030f028acf504081eb0ce

            SHA256

            dc4a81df522c032ee784b7b17f4a64a45a33a78580bf8b083a5d89488484403c

            SHA512

            fdb9da81b4cceb8965327d02334fe2274331ae68f3f011f080d09565c19c5c8ce5cd7da5979b04e32aab035050449779f450d6e9a84bf70fedac577fcff42ac1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            546c9bfcad3736191af9e3a1e307b3ac

            SHA1

            890961da388ff938631030f028acf504081eb0ce

            SHA256

            dc4a81df522c032ee784b7b17f4a64a45a33a78580bf8b083a5d89488484403c

            SHA512

            fdb9da81b4cceb8965327d02334fe2274331ae68f3f011f080d09565c19c5c8ce5cd7da5979b04e32aab035050449779f450d6e9a84bf70fedac577fcff42ac1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            0f16bb4d332bfe20a50e3ad8c48f6472

            SHA1

            6f44db561cbe4ad0d0c3e0c81362f548ebc36731

            SHA256

            4320be815dd46a60b1735d41b11601480f0233725c09ce2ee946be5728e1af93

            SHA512

            c0dbe9e69199d131565cb2bc2c62671943ff5332b146bc1fd5102c7f585dcffa8f8c3ff21bd0ac4fd2e38fcc007bef1d02abae4a4333735f917b80708936fe39

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            0f16bb4d332bfe20a50e3ad8c48f6472

            SHA1

            6f44db561cbe4ad0d0c3e0c81362f548ebc36731

            SHA256

            4320be815dd46a60b1735d41b11601480f0233725c09ce2ee946be5728e1af93

            SHA512

            c0dbe9e69199d131565cb2bc2c62671943ff5332b146bc1fd5102c7f585dcffa8f8c3ff21bd0ac4fd2e38fcc007bef1d02abae4a4333735f917b80708936fe39

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            0f16bb4d332bfe20a50e3ad8c48f6472

            SHA1

            6f44db561cbe4ad0d0c3e0c81362f548ebc36731

            SHA256

            4320be815dd46a60b1735d41b11601480f0233725c09ce2ee946be5728e1af93

            SHA512

            c0dbe9e69199d131565cb2bc2c62671943ff5332b146bc1fd5102c7f585dcffa8f8c3ff21bd0ac4fd2e38fcc007bef1d02abae4a4333735f917b80708936fe39

          • memory/116-140-0x0000000000000000-mapping.dmp

          • memory/1020-166-0x0000000000000000-mapping.dmp

          • memory/1348-159-0x0000000000000000-mapping.dmp

          • memory/1564-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1564-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3392-135-0x0000000000000000-mapping.dmp

          • memory/4360-165-0x0000000000000000-mapping.dmp

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

          • memory/4564-147-0x0000000000000000-mapping.dmp

          • memory/4764-142-0x0000000000000000-mapping.dmp

          • memory/4856-153-0x0000000000000000-mapping.dmp

          • memory/4992-136-0x0000000000000000-mapping.dmp

          • memory/5100-141-0x0000000000000000-mapping.dmp